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Fixes generated by 'codespell' and manually reviewed. Signed-off-by: Lucas De Marchi <lucas.demarchi@profusion.mobi>
2981 lines
78 KiB
C
2981 lines
78 KiB
C
/*
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* This file is part of the Chelsio T4 PCI-E SR-IOV Virtual Function Ethernet
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* driver for Linux.
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*
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* Copyright (c) 2009-2010 Chelsio Communications, Inc. All rights reserved.
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*
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* This software is available to you under a choice of one of two
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* licenses. You may choose to be licensed under the terms of the GNU
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* General Public License (GPL) Version 2, available from the file
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* COPYING in the main directory of this source tree, or the
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* OpenIB.org BSD license below:
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above
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* copyright notice, this list of conditions and the following
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* disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include <linux/version.h>
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#include <linux/module.h>
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#include <linux/moduleparam.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/dma-mapping.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/debugfs.h>
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#include <linux/ethtool.h>
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#include "t4vf_common.h"
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#include "t4vf_defs.h"
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#include "../cxgb4/t4_regs.h"
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#include "../cxgb4/t4_msg.h"
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/*
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* Generic information about the driver.
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*/
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#define DRV_VERSION "1.0.0"
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#define DRV_DESC "Chelsio T4 Virtual Function (VF) Network Driver"
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/*
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* Module Parameters.
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* ==================
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*/
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/*
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* Default ethtool "message level" for adapters.
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*/
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#define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
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NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
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NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
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static int dflt_msg_enable = DFLT_MSG_ENABLE;
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module_param(dflt_msg_enable, int, 0644);
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MODULE_PARM_DESC(dflt_msg_enable,
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"default adapter ethtool message level bitmap");
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/*
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* The driver uses the best interrupt scheme available on a platform in the
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* order MSI-X then MSI. This parameter determines which of these schemes the
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* driver may consider as follows:
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*
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* msi = 2: choose from among MSI-X and MSI
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* msi = 1: only consider MSI interrupts
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*
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* Note that unlike the Physical Function driver, this Virtual Function driver
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* does _not_ support legacy INTx interrupts (this limitation is mandated by
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* the PCI-E SR-IOV standard).
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*/
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#define MSI_MSIX 2
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#define MSI_MSI 1
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#define MSI_DEFAULT MSI_MSIX
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static int msi = MSI_DEFAULT;
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module_param(msi, int, 0644);
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MODULE_PARM_DESC(msi, "whether to use MSI-X or MSI");
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/*
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* Fundamental constants.
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* ======================
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*/
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enum {
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MAX_TXQ_ENTRIES = 16384,
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MAX_RSPQ_ENTRIES = 16384,
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MAX_RX_BUFFERS = 16384,
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MIN_TXQ_ENTRIES = 32,
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MIN_RSPQ_ENTRIES = 128,
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MIN_FL_ENTRIES = 16,
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/*
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* For purposes of manipulating the Free List size we need to
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* recognize that Free Lists are actually Egress Queues (the host
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* produces free buffers which the hardware consumes), Egress Queues
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* indices are all in units of Egress Context Units bytes, and free
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* list entries are 64-bit PCI DMA addresses. And since the state of
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* the Producer Index == the Consumer Index implies an EMPTY list, we
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* always have at least one Egress Unit's worth of Free List entries
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* unused. See sge.c for more details ...
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*/
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EQ_UNIT = SGE_EQ_IDXSIZE,
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FL_PER_EQ_UNIT = EQ_UNIT / sizeof(__be64),
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MIN_FL_RESID = FL_PER_EQ_UNIT,
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};
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/*
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* Global driver state.
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* ====================
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*/
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static struct dentry *cxgb4vf_debugfs_root;
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/*
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* OS "Callback" functions.
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* ========================
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*/
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/*
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* The link status has changed on the indicated "port" (Virtual Interface).
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*/
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void t4vf_os_link_changed(struct adapter *adapter, int pidx, int link_ok)
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{
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struct net_device *dev = adapter->port[pidx];
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/*
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* If the port is disabled or the current recorded "link up"
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* status matches the new status, just return.
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*/
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if (!netif_running(dev) || link_ok == netif_carrier_ok(dev))
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return;
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/*
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* Tell the OS that the link status has changed and print a short
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* informative message on the console about the event.
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*/
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if (link_ok) {
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const char *s;
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const char *fc;
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const struct port_info *pi = netdev_priv(dev);
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netif_carrier_on(dev);
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switch (pi->link_cfg.speed) {
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case SPEED_10000:
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s = "10Gbps";
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break;
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case SPEED_1000:
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s = "1000Mbps";
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break;
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case SPEED_100:
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s = "100Mbps";
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break;
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default:
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s = "unknown";
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break;
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}
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switch (pi->link_cfg.fc) {
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case PAUSE_RX:
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fc = "RX";
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break;
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case PAUSE_TX:
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fc = "TX";
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break;
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case PAUSE_RX|PAUSE_TX:
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fc = "RX/TX";
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break;
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default:
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fc = "no";
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break;
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}
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printk(KERN_INFO "%s: link up, %s, full-duplex, %s PAUSE\n",
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dev->name, s, fc);
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} else {
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netif_carrier_off(dev);
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printk(KERN_INFO "%s: link down\n", dev->name);
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}
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}
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/*
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* Net device operations.
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* ======================
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*/
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/*
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* Record our new VLAN Group and enable/disable hardware VLAN Tag extraction
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* based on whether the specified VLAN Group pointer is NULL or not.
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*/
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static void cxgb4vf_vlan_rx_register(struct net_device *dev,
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struct vlan_group *grp)
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{
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struct port_info *pi = netdev_priv(dev);
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pi->vlan_grp = grp;
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t4vf_set_rxmode(pi->adapter, pi->viid, -1, -1, -1, -1, grp != NULL, 0);
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}
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/*
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* Perform the MAC and PHY actions needed to enable a "port" (Virtual
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* Interface).
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*/
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static int link_start(struct net_device *dev)
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{
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int ret;
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struct port_info *pi = netdev_priv(dev);
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/*
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* We do not set address filters and promiscuity here, the stack does
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* that step explicitly.
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*/
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ret = t4vf_set_rxmode(pi->adapter, pi->viid, dev->mtu, -1, -1, -1, -1,
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true);
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if (ret == 0) {
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ret = t4vf_change_mac(pi->adapter, pi->viid,
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pi->xact_addr_filt, dev->dev_addr, true);
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if (ret >= 0) {
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pi->xact_addr_filt = ret;
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ret = 0;
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}
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}
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/*
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* We don't need to actually "start the link" itself since the
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* firmware will do that for us when the first Virtual Interface
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* is enabled on a port.
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*/
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if (ret == 0)
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ret = t4vf_enable_vi(pi->adapter, pi->viid, true, true);
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return ret;
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}
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/*
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* Name the MSI-X interrupts.
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*/
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static void name_msix_vecs(struct adapter *adapter)
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{
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int namelen = sizeof(adapter->msix_info[0].desc) - 1;
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int pidx;
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/*
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* Firmware events.
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*/
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snprintf(adapter->msix_info[MSIX_FW].desc, namelen,
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"%s-FWeventq", adapter->name);
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adapter->msix_info[MSIX_FW].desc[namelen] = 0;
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/*
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* Ethernet queues.
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*/
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for_each_port(adapter, pidx) {
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struct net_device *dev = adapter->port[pidx];
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const struct port_info *pi = netdev_priv(dev);
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int qs, msi;
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for (qs = 0, msi = MSIX_IQFLINT; qs < pi->nqsets; qs++, msi++) {
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snprintf(adapter->msix_info[msi].desc, namelen,
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"%s-%d", dev->name, qs);
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adapter->msix_info[msi].desc[namelen] = 0;
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}
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}
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}
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/*
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* Request all of our MSI-X resources.
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*/
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static int request_msix_queue_irqs(struct adapter *adapter)
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{
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struct sge *s = &adapter->sge;
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int rxq, msi, err;
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/*
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* Firmware events.
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*/
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err = request_irq(adapter->msix_info[MSIX_FW].vec, t4vf_sge_intr_msix,
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0, adapter->msix_info[MSIX_FW].desc, &s->fw_evtq);
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if (err)
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return err;
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/*
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* Ethernet queues.
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*/
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msi = MSIX_IQFLINT;
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for_each_ethrxq(s, rxq) {
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err = request_irq(adapter->msix_info[msi].vec,
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t4vf_sge_intr_msix, 0,
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adapter->msix_info[msi].desc,
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&s->ethrxq[rxq].rspq);
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if (err)
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goto err_free_irqs;
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msi++;
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}
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return 0;
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err_free_irqs:
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while (--rxq >= 0)
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free_irq(adapter->msix_info[--msi].vec, &s->ethrxq[rxq].rspq);
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free_irq(adapter->msix_info[MSIX_FW].vec, &s->fw_evtq);
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return err;
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}
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/*
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* Free our MSI-X resources.
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*/
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static void free_msix_queue_irqs(struct adapter *adapter)
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{
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struct sge *s = &adapter->sge;
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int rxq, msi;
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free_irq(adapter->msix_info[MSIX_FW].vec, &s->fw_evtq);
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msi = MSIX_IQFLINT;
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for_each_ethrxq(s, rxq)
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free_irq(adapter->msix_info[msi++].vec,
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&s->ethrxq[rxq].rspq);
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}
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/*
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* Turn on NAPI and start up interrupts on a response queue.
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*/
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static void qenable(struct sge_rspq *rspq)
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{
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napi_enable(&rspq->napi);
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/*
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* 0-increment the Going To Sleep register to start the timer and
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* enable interrupts.
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*/
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t4_write_reg(rspq->adapter, T4VF_SGE_BASE_ADDR + SGE_VF_GTS,
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CIDXINC(0) |
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SEINTARM(rspq->intr_params) |
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INGRESSQID(rspq->cntxt_id));
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}
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/*
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* Enable NAPI scheduling and interrupt generation for all Receive Queues.
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*/
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static void enable_rx(struct adapter *adapter)
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{
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int rxq;
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struct sge *s = &adapter->sge;
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for_each_ethrxq(s, rxq)
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qenable(&s->ethrxq[rxq].rspq);
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qenable(&s->fw_evtq);
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/*
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* The interrupt queue doesn't use NAPI so we do the 0-increment of
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* its Going To Sleep register here to get it started.
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*/
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if (adapter->flags & USING_MSI)
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t4_write_reg(adapter, T4VF_SGE_BASE_ADDR + SGE_VF_GTS,
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CIDXINC(0) |
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SEINTARM(s->intrq.intr_params) |
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INGRESSQID(s->intrq.cntxt_id));
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}
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|
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/*
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* Wait until all NAPI handlers are descheduled.
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*/
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static void quiesce_rx(struct adapter *adapter)
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{
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struct sge *s = &adapter->sge;
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int rxq;
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for_each_ethrxq(s, rxq)
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napi_disable(&s->ethrxq[rxq].rspq.napi);
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napi_disable(&s->fw_evtq.napi);
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}
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|
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/*
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* Response queue handler for the firmware event queue.
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*/
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static int fwevtq_handler(struct sge_rspq *rspq, const __be64 *rsp,
|
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const struct pkt_gl *gl)
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{
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/*
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* Extract response opcode and get pointer to CPL message body.
|
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*/
|
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struct adapter *adapter = rspq->adapter;
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u8 opcode = ((const struct rss_header *)rsp)->opcode;
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void *cpl = (void *)(rsp + 1);
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|
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switch (opcode) {
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case CPL_FW6_MSG: {
|
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/*
|
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* We've received an asynchronous message from the firmware.
|
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*/
|
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const struct cpl_fw6_msg *fw_msg = cpl;
|
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if (fw_msg->type == FW6_TYPE_CMD_RPL)
|
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t4vf_handle_fw_rpl(adapter, fw_msg->data);
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break;
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}
|
|
|
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case CPL_SGE_EGR_UPDATE: {
|
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/*
|
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* We've received an Egress Queue Status Update message. We
|
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* get these, if the SGE is configured to send these when the
|
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* firmware passes certain points in processing our TX
|
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* Ethernet Queue or if we make an explicit request for one.
|
|
* We use these updates to determine when we may need to
|
|
* restart a TX Ethernet Queue which was stopped for lack of
|
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* free TX Queue Descriptors ...
|
|
*/
|
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const struct cpl_sge_egr_update *p = (void *)cpl;
|
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unsigned int qid = EGR_QID(be32_to_cpu(p->opcode_qid));
|
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struct sge *s = &adapter->sge;
|
|
struct sge_txq *tq;
|
|
struct sge_eth_txq *txq;
|
|
unsigned int eq_idx;
|
|
|
|
/*
|
|
* Perform sanity checking on the Queue ID to make sure it
|
|
* really refers to one of our TX Ethernet Egress Queues which
|
|
* is active and matches the queue's ID. None of these error
|
|
* conditions should ever happen so we may want to either make
|
|
* them fatal and/or conditionalized under DEBUG.
|
|
*/
|
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eq_idx = EQ_IDX(s, qid);
|
|
if (unlikely(eq_idx >= MAX_EGRQ)) {
|
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dev_err(adapter->pdev_dev,
|
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"Egress Update QID %d out of range\n", qid);
|
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break;
|
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}
|
|
tq = s->egr_map[eq_idx];
|
|
if (unlikely(tq == NULL)) {
|
|
dev_err(adapter->pdev_dev,
|
|
"Egress Update QID %d TXQ=NULL\n", qid);
|
|
break;
|
|
}
|
|
txq = container_of(tq, struct sge_eth_txq, q);
|
|
if (unlikely(tq->abs_id != qid)) {
|
|
dev_err(adapter->pdev_dev,
|
|
"Egress Update QID %d refers to TXQ %d\n",
|
|
qid, tq->abs_id);
|
|
break;
|
|
}
|
|
|
|
/*
|
|
* Restart a stopped TX Queue which has less than half of its
|
|
* TX ring in use ...
|
|
*/
|
|
txq->q.restarts++;
|
|
netif_tx_wake_queue(txq->txq);
|
|
break;
|
|
}
|
|
|
|
default:
|
|
dev_err(adapter->pdev_dev,
|
|
"unexpected CPL %#x on FW event queue\n", opcode);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Allocate SGE TX/RX response queues. Determine how many sets of SGE queues
|
|
* to use and initializes them. We support multiple "Queue Sets" per port if
|
|
* we have MSI-X, otherwise just one queue set per port.
|
|
*/
|
|
static int setup_sge_queues(struct adapter *adapter)
|
|
{
|
|
struct sge *s = &adapter->sge;
|
|
int err, pidx, msix;
|
|
|
|
/*
|
|
* Clear "Queue Set" Free List Starving and TX Queue Mapping Error
|
|
* state.
|
|
*/
|
|
bitmap_zero(s->starving_fl, MAX_EGRQ);
|
|
|
|
/*
|
|
* If we're using MSI interrupt mode we need to set up a "forwarded
|
|
* interrupt" queue which we'll set up with our MSI vector. The rest
|
|
* of the ingress queues will be set up to forward their interrupts to
|
|
* this queue ... This must be first since t4vf_sge_alloc_rxq() uses
|
|
* the intrq's queue ID as the interrupt forwarding queue for the
|
|
* subsequent calls ...
|
|
*/
|
|
if (adapter->flags & USING_MSI) {
|
|
err = t4vf_sge_alloc_rxq(adapter, &s->intrq, false,
|
|
adapter->port[0], 0, NULL, NULL);
|
|
if (err)
|
|
goto err_free_queues;
|
|
}
|
|
|
|
/*
|
|
* Allocate our ingress queue for asynchronous firmware messages.
|
|
*/
|
|
err = t4vf_sge_alloc_rxq(adapter, &s->fw_evtq, true, adapter->port[0],
|
|
MSIX_FW, NULL, fwevtq_handler);
|
|
if (err)
|
|
goto err_free_queues;
|
|
|
|
/*
|
|
* Allocate each "port"'s initial Queue Sets. These can be changed
|
|
* later on ... up to the point where any interface on the adapter is
|
|
* brought up at which point lots of things get nailed down
|
|
* permanently ...
|
|
*/
|
|
msix = MSIX_IQFLINT;
|
|
for_each_port(adapter, pidx) {
|
|
struct net_device *dev = adapter->port[pidx];
|
|
struct port_info *pi = netdev_priv(dev);
|
|
struct sge_eth_rxq *rxq = &s->ethrxq[pi->first_qset];
|
|
struct sge_eth_txq *txq = &s->ethtxq[pi->first_qset];
|
|
int qs;
|
|
|
|
for (qs = 0; qs < pi->nqsets; qs++, rxq++, txq++) {
|
|
err = t4vf_sge_alloc_rxq(adapter, &rxq->rspq, false,
|
|
dev, msix++,
|
|
&rxq->fl, t4vf_ethrx_handler);
|
|
if (err)
|
|
goto err_free_queues;
|
|
|
|
err = t4vf_sge_alloc_eth_txq(adapter, txq, dev,
|
|
netdev_get_tx_queue(dev, qs),
|
|
s->fw_evtq.cntxt_id);
|
|
if (err)
|
|
goto err_free_queues;
|
|
|
|
rxq->rspq.idx = qs;
|
|
memset(&rxq->stats, 0, sizeof(rxq->stats));
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Create the reverse mappings for the queues.
|
|
*/
|
|
s->egr_base = s->ethtxq[0].q.abs_id - s->ethtxq[0].q.cntxt_id;
|
|
s->ingr_base = s->ethrxq[0].rspq.abs_id - s->ethrxq[0].rspq.cntxt_id;
|
|
IQ_MAP(s, s->fw_evtq.abs_id) = &s->fw_evtq;
|
|
for_each_port(adapter, pidx) {
|
|
struct net_device *dev = adapter->port[pidx];
|
|
struct port_info *pi = netdev_priv(dev);
|
|
struct sge_eth_rxq *rxq = &s->ethrxq[pi->first_qset];
|
|
struct sge_eth_txq *txq = &s->ethtxq[pi->first_qset];
|
|
int qs;
|
|
|
|
for (qs = 0; qs < pi->nqsets; qs++, rxq++, txq++) {
|
|
IQ_MAP(s, rxq->rspq.abs_id) = &rxq->rspq;
|
|
EQ_MAP(s, txq->q.abs_id) = &txq->q;
|
|
|
|
/*
|
|
* The FW_IQ_CMD doesn't return the Absolute Queue IDs
|
|
* for Free Lists but since all of the Egress Queues
|
|
* (including Free Lists) have Relative Queue IDs
|
|
* which are computed as Absolute - Base Queue ID, we
|
|
* can synthesize the Absolute Queue IDs for the Free
|
|
* Lists. This is useful for debugging purposes when
|
|
* we want to dump Queue Contexts via the PF Driver.
|
|
*/
|
|
rxq->fl.abs_id = rxq->fl.cntxt_id + s->egr_base;
|
|
EQ_MAP(s, rxq->fl.abs_id) = &rxq->fl;
|
|
}
|
|
}
|
|
return 0;
|
|
|
|
err_free_queues:
|
|
t4vf_free_sge_resources(adapter);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Set up Receive Side Scaling (RSS) to distribute packets to multiple receive
|
|
* queues. We configure the RSS CPU lookup table to distribute to the number
|
|
* of HW receive queues, and the response queue lookup table to narrow that
|
|
* down to the response queues actually configured for each "port" (Virtual
|
|
* Interface). We always configure the RSS mapping for all ports since the
|
|
* mapping table has plenty of entries.
|
|
*/
|
|
static int setup_rss(struct adapter *adapter)
|
|
{
|
|
int pidx;
|
|
|
|
for_each_port(adapter, pidx) {
|
|
struct port_info *pi = adap2pinfo(adapter, pidx);
|
|
struct sge_eth_rxq *rxq = &adapter->sge.ethrxq[pi->first_qset];
|
|
u16 rss[MAX_PORT_QSETS];
|
|
int qs, err;
|
|
|
|
for (qs = 0; qs < pi->nqsets; qs++)
|
|
rss[qs] = rxq[qs].rspq.abs_id;
|
|
|
|
err = t4vf_config_rss_range(adapter, pi->viid,
|
|
0, pi->rss_size, rss, pi->nqsets);
|
|
if (err)
|
|
return err;
|
|
|
|
/*
|
|
* Perform Global RSS Mode-specific initialization.
|
|
*/
|
|
switch (adapter->params.rss.mode) {
|
|
case FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL:
|
|
/*
|
|
* If Tunnel All Lookup isn't specified in the global
|
|
* RSS Configuration, then we need to specify a
|
|
* default Ingress Queue for any ingress packets which
|
|
* aren't hashed. We'll use our first ingress queue
|
|
* ...
|
|
*/
|
|
if (!adapter->params.rss.u.basicvirtual.tnlalllookup) {
|
|
union rss_vi_config config;
|
|
err = t4vf_read_rss_vi_config(adapter,
|
|
pi->viid,
|
|
&config);
|
|
if (err)
|
|
return err;
|
|
config.basicvirtual.defaultq =
|
|
rxq[0].rspq.abs_id;
|
|
err = t4vf_write_rss_vi_config(adapter,
|
|
pi->viid,
|
|
&config);
|
|
if (err)
|
|
return err;
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Bring the adapter up. Called whenever we go from no "ports" open to having
|
|
* one open. This function performs the actions necessary to make an adapter
|
|
* operational, such as completing the initialization of HW modules, and
|
|
* enabling interrupts. Must be called with the rtnl lock held. (Note that
|
|
* this is called "cxgb_up" in the PF Driver.)
|
|
*/
|
|
static int adapter_up(struct adapter *adapter)
|
|
{
|
|
int err;
|
|
|
|
/*
|
|
* If this is the first time we've been called, perform basic
|
|
* adapter setup. Once we've done this, many of our adapter
|
|
* parameters can no longer be changed ...
|
|
*/
|
|
if ((adapter->flags & FULL_INIT_DONE) == 0) {
|
|
err = setup_sge_queues(adapter);
|
|
if (err)
|
|
return err;
|
|
err = setup_rss(adapter);
|
|
if (err) {
|
|
t4vf_free_sge_resources(adapter);
|
|
return err;
|
|
}
|
|
|
|
if (adapter->flags & USING_MSIX)
|
|
name_msix_vecs(adapter);
|
|
adapter->flags |= FULL_INIT_DONE;
|
|
}
|
|
|
|
/*
|
|
* Acquire our interrupt resources. We only support MSI-X and MSI.
|
|
*/
|
|
BUG_ON((adapter->flags & (USING_MSIX|USING_MSI)) == 0);
|
|
if (adapter->flags & USING_MSIX)
|
|
err = request_msix_queue_irqs(adapter);
|
|
else
|
|
err = request_irq(adapter->pdev->irq,
|
|
t4vf_intr_handler(adapter), 0,
|
|
adapter->name, adapter);
|
|
if (err) {
|
|
dev_err(adapter->pdev_dev, "request_irq failed, err %d\n",
|
|
err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Enable NAPI ingress processing and return success.
|
|
*/
|
|
enable_rx(adapter);
|
|
t4vf_sge_start(adapter);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Bring the adapter down. Called whenever the last "port" (Virtual
|
|
* Interface) closed. (Note that this routine is called "cxgb_down" in the PF
|
|
* Driver.)
|
|
*/
|
|
static void adapter_down(struct adapter *adapter)
|
|
{
|
|
/*
|
|
* Free interrupt resources.
|
|
*/
|
|
if (adapter->flags & USING_MSIX)
|
|
free_msix_queue_irqs(adapter);
|
|
else
|
|
free_irq(adapter->pdev->irq, adapter);
|
|
|
|
/*
|
|
* Wait for NAPI handlers to finish.
|
|
*/
|
|
quiesce_rx(adapter);
|
|
}
|
|
|
|
/*
|
|
* Start up a net device.
|
|
*/
|
|
static int cxgb4vf_open(struct net_device *dev)
|
|
{
|
|
int err;
|
|
struct port_info *pi = netdev_priv(dev);
|
|
struct adapter *adapter = pi->adapter;
|
|
|
|
/*
|
|
* If this is the first interface that we're opening on the "adapter",
|
|
* bring the "adapter" up now.
|
|
*/
|
|
if (adapter->open_device_map == 0) {
|
|
err = adapter_up(adapter);
|
|
if (err)
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Note that this interface is up and start everything up ...
|
|
*/
|
|
netif_set_real_num_tx_queues(dev, pi->nqsets);
|
|
err = netif_set_real_num_rx_queues(dev, pi->nqsets);
|
|
if (err)
|
|
goto err_unwind;
|
|
err = link_start(dev);
|
|
if (err)
|
|
goto err_unwind;
|
|
|
|
netif_tx_start_all_queues(dev);
|
|
set_bit(pi->port_id, &adapter->open_device_map);
|
|
return 0;
|
|
|
|
err_unwind:
|
|
if (adapter->open_device_map == 0)
|
|
adapter_down(adapter);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Shut down a net device. This routine is called "cxgb_close" in the PF
|
|
* Driver ...
|
|
*/
|
|
static int cxgb4vf_stop(struct net_device *dev)
|
|
{
|
|
struct port_info *pi = netdev_priv(dev);
|
|
struct adapter *adapter = pi->adapter;
|
|
|
|
netif_tx_stop_all_queues(dev);
|
|
netif_carrier_off(dev);
|
|
t4vf_enable_vi(adapter, pi->viid, false, false);
|
|
pi->link_cfg.link_ok = 0;
|
|
|
|
clear_bit(pi->port_id, &adapter->open_device_map);
|
|
if (adapter->open_device_map == 0)
|
|
adapter_down(adapter);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Translate our basic statistics into the standard "ifconfig" statistics.
|
|
*/
|
|
static struct net_device_stats *cxgb4vf_get_stats(struct net_device *dev)
|
|
{
|
|
struct t4vf_port_stats stats;
|
|
struct port_info *pi = netdev2pinfo(dev);
|
|
struct adapter *adapter = pi->adapter;
|
|
struct net_device_stats *ns = &dev->stats;
|
|
int err;
|
|
|
|
spin_lock(&adapter->stats_lock);
|
|
err = t4vf_get_port_stats(adapter, pi->pidx, &stats);
|
|
spin_unlock(&adapter->stats_lock);
|
|
|
|
memset(ns, 0, sizeof(*ns));
|
|
if (err)
|
|
return ns;
|
|
|
|
ns->tx_bytes = (stats.tx_bcast_bytes + stats.tx_mcast_bytes +
|
|
stats.tx_ucast_bytes + stats.tx_offload_bytes);
|
|
ns->tx_packets = (stats.tx_bcast_frames + stats.tx_mcast_frames +
|
|
stats.tx_ucast_frames + stats.tx_offload_frames);
|
|
ns->rx_bytes = (stats.rx_bcast_bytes + stats.rx_mcast_bytes +
|
|
stats.rx_ucast_bytes);
|
|
ns->rx_packets = (stats.rx_bcast_frames + stats.rx_mcast_frames +
|
|
stats.rx_ucast_frames);
|
|
ns->multicast = stats.rx_mcast_frames;
|
|
ns->tx_errors = stats.tx_drop_frames;
|
|
ns->rx_errors = stats.rx_err_frames;
|
|
|
|
return ns;
|
|
}
|
|
|
|
/*
|
|
* Collect up to maxaddrs worth of a netdevice's unicast addresses, starting
|
|
* at a specified offset within the list, into an array of addrss pointers and
|
|
* return the number collected.
|
|
*/
|
|
static inline unsigned int collect_netdev_uc_list_addrs(const struct net_device *dev,
|
|
const u8 **addr,
|
|
unsigned int offset,
|
|
unsigned int maxaddrs)
|
|
{
|
|
unsigned int index = 0;
|
|
unsigned int naddr = 0;
|
|
const struct netdev_hw_addr *ha;
|
|
|
|
for_each_dev_addr(dev, ha)
|
|
if (index++ >= offset) {
|
|
addr[naddr++] = ha->addr;
|
|
if (naddr >= maxaddrs)
|
|
break;
|
|
}
|
|
return naddr;
|
|
}
|
|
|
|
/*
|
|
* Collect up to maxaddrs worth of a netdevice's multicast addresses, starting
|
|
* at a specified offset within the list, into an array of addrss pointers and
|
|
* return the number collected.
|
|
*/
|
|
static inline unsigned int collect_netdev_mc_list_addrs(const struct net_device *dev,
|
|
const u8 **addr,
|
|
unsigned int offset,
|
|
unsigned int maxaddrs)
|
|
{
|
|
unsigned int index = 0;
|
|
unsigned int naddr = 0;
|
|
const struct netdev_hw_addr *ha;
|
|
|
|
netdev_for_each_mc_addr(ha, dev)
|
|
if (index++ >= offset) {
|
|
addr[naddr++] = ha->addr;
|
|
if (naddr >= maxaddrs)
|
|
break;
|
|
}
|
|
return naddr;
|
|
}
|
|
|
|
/*
|
|
* Configure the exact and hash address filters to handle a port's multicast
|
|
* and secondary unicast MAC addresses.
|
|
*/
|
|
static int set_addr_filters(const struct net_device *dev, bool sleep)
|
|
{
|
|
u64 mhash = 0;
|
|
u64 uhash = 0;
|
|
bool free = true;
|
|
unsigned int offset, naddr;
|
|
const u8 *addr[7];
|
|
int ret;
|
|
const struct port_info *pi = netdev_priv(dev);
|
|
|
|
/* first do the secondary unicast addresses */
|
|
for (offset = 0; ; offset += naddr) {
|
|
naddr = collect_netdev_uc_list_addrs(dev, addr, offset,
|
|
ARRAY_SIZE(addr));
|
|
if (naddr == 0)
|
|
break;
|
|
|
|
ret = t4vf_alloc_mac_filt(pi->adapter, pi->viid, free,
|
|
naddr, addr, NULL, &uhash, sleep);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
free = false;
|
|
}
|
|
|
|
/* next set up the multicast addresses */
|
|
for (offset = 0; ; offset += naddr) {
|
|
naddr = collect_netdev_mc_list_addrs(dev, addr, offset,
|
|
ARRAY_SIZE(addr));
|
|
if (naddr == 0)
|
|
break;
|
|
|
|
ret = t4vf_alloc_mac_filt(pi->adapter, pi->viid, free,
|
|
naddr, addr, NULL, &mhash, sleep);
|
|
if (ret < 0)
|
|
return ret;
|
|
free = false;
|
|
}
|
|
|
|
return t4vf_set_addr_hash(pi->adapter, pi->viid, uhash != 0,
|
|
uhash | mhash, sleep);
|
|
}
|
|
|
|
/*
|
|
* Set RX properties of a port, such as promiscruity, address filters, and MTU.
|
|
* If @mtu is -1 it is left unchanged.
|
|
*/
|
|
static int set_rxmode(struct net_device *dev, int mtu, bool sleep_ok)
|
|
{
|
|
int ret;
|
|
struct port_info *pi = netdev_priv(dev);
|
|
|
|
ret = set_addr_filters(dev, sleep_ok);
|
|
if (ret == 0)
|
|
ret = t4vf_set_rxmode(pi->adapter, pi->viid, -1,
|
|
(dev->flags & IFF_PROMISC) != 0,
|
|
(dev->flags & IFF_ALLMULTI) != 0,
|
|
1, -1, sleep_ok);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Set the current receive modes on the device.
|
|
*/
|
|
static void cxgb4vf_set_rxmode(struct net_device *dev)
|
|
{
|
|
/* unfortunately we can't return errors to the stack */
|
|
set_rxmode(dev, -1, false);
|
|
}
|
|
|
|
/*
|
|
* Find the entry in the interrupt holdoff timer value array which comes
|
|
* closest to the specified interrupt holdoff value.
|
|
*/
|
|
static int closest_timer(const struct sge *s, int us)
|
|
{
|
|
int i, timer_idx = 0, min_delta = INT_MAX;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(s->timer_val); i++) {
|
|
int delta = us - s->timer_val[i];
|
|
if (delta < 0)
|
|
delta = -delta;
|
|
if (delta < min_delta) {
|
|
min_delta = delta;
|
|
timer_idx = i;
|
|
}
|
|
}
|
|
return timer_idx;
|
|
}
|
|
|
|
static int closest_thres(const struct sge *s, int thres)
|
|
{
|
|
int i, delta, pktcnt_idx = 0, min_delta = INT_MAX;
|
|
|
|
for (i = 0; i < ARRAY_SIZE(s->counter_val); i++) {
|
|
delta = thres - s->counter_val[i];
|
|
if (delta < 0)
|
|
delta = -delta;
|
|
if (delta < min_delta) {
|
|
min_delta = delta;
|
|
pktcnt_idx = i;
|
|
}
|
|
}
|
|
return pktcnt_idx;
|
|
}
|
|
|
|
/*
|
|
* Return a queue's interrupt hold-off time in us. 0 means no timer.
|
|
*/
|
|
static unsigned int qtimer_val(const struct adapter *adapter,
|
|
const struct sge_rspq *rspq)
|
|
{
|
|
unsigned int timer_idx = QINTR_TIMER_IDX_GET(rspq->intr_params);
|
|
|
|
return timer_idx < SGE_NTIMERS
|
|
? adapter->sge.timer_val[timer_idx]
|
|
: 0;
|
|
}
|
|
|
|
/**
|
|
* set_rxq_intr_params - set a queue's interrupt holdoff parameters
|
|
* @adapter: the adapter
|
|
* @rspq: the RX response queue
|
|
* @us: the hold-off time in us, or 0 to disable timer
|
|
* @cnt: the hold-off packet count, or 0 to disable counter
|
|
*
|
|
* Sets an RX response queue's interrupt hold-off time and packet count.
|
|
* At least one of the two needs to be enabled for the queue to generate
|
|
* interrupts.
|
|
*/
|
|
static int set_rxq_intr_params(struct adapter *adapter, struct sge_rspq *rspq,
|
|
unsigned int us, unsigned int cnt)
|
|
{
|
|
unsigned int timer_idx;
|
|
|
|
/*
|
|
* If both the interrupt holdoff timer and count are specified as
|
|
* zero, default to a holdoff count of 1 ...
|
|
*/
|
|
if ((us | cnt) == 0)
|
|
cnt = 1;
|
|
|
|
/*
|
|
* If an interrupt holdoff count has been specified, then find the
|
|
* closest configured holdoff count and use that. If the response
|
|
* queue has already been created, then update its queue context
|
|
* parameters ...
|
|
*/
|
|
if (cnt) {
|
|
int err;
|
|
u32 v, pktcnt_idx;
|
|
|
|
pktcnt_idx = closest_thres(&adapter->sge, cnt);
|
|
if (rspq->desc && rspq->pktcnt_idx != pktcnt_idx) {
|
|
v = FW_PARAMS_MNEM(FW_PARAMS_MNEM_DMAQ) |
|
|
FW_PARAMS_PARAM_X(
|
|
FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH) |
|
|
FW_PARAMS_PARAM_YZ(rspq->cntxt_id);
|
|
err = t4vf_set_params(adapter, 1, &v, &pktcnt_idx);
|
|
if (err)
|
|
return err;
|
|
}
|
|
rspq->pktcnt_idx = pktcnt_idx;
|
|
}
|
|
|
|
/*
|
|
* Compute the closest holdoff timer index from the supplied holdoff
|
|
* timer value.
|
|
*/
|
|
timer_idx = (us == 0
|
|
? SGE_TIMER_RSTRT_CNTR
|
|
: closest_timer(&adapter->sge, us));
|
|
|
|
/*
|
|
* Update the response queue's interrupt coalescing parameters and
|
|
* return success.
|
|
*/
|
|
rspq->intr_params = (QINTR_TIMER_IDX(timer_idx) |
|
|
(cnt > 0 ? QINTR_CNT_EN : 0));
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Return a version number to identify the type of adapter. The scheme is:
|
|
* - bits 0..9: chip version
|
|
* - bits 10..15: chip revision
|
|
*/
|
|
static inline unsigned int mk_adap_vers(const struct adapter *adapter)
|
|
{
|
|
/*
|
|
* Chip version 4, revision 0x3f (cxgb4vf).
|
|
*/
|
|
return 4 | (0x3f << 10);
|
|
}
|
|
|
|
/*
|
|
* Execute the specified ioctl command.
|
|
*/
|
|
static int cxgb4vf_do_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
|
|
{
|
|
int ret = 0;
|
|
|
|
switch (cmd) {
|
|
/*
|
|
* The VF Driver doesn't have access to any of the other
|
|
* common Ethernet device ioctl()'s (like reading/writing
|
|
* PHY registers, etc.
|
|
*/
|
|
|
|
default:
|
|
ret = -EOPNOTSUPP;
|
|
break;
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Change the device's MTU.
|
|
*/
|
|
static int cxgb4vf_change_mtu(struct net_device *dev, int new_mtu)
|
|
{
|
|
int ret;
|
|
struct port_info *pi = netdev_priv(dev);
|
|
|
|
/* accommodate SACK */
|
|
if (new_mtu < 81)
|
|
return -EINVAL;
|
|
|
|
ret = t4vf_set_rxmode(pi->adapter, pi->viid, new_mtu,
|
|
-1, -1, -1, -1, true);
|
|
if (!ret)
|
|
dev->mtu = new_mtu;
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Change the devices MAC address.
|
|
*/
|
|
static int cxgb4vf_set_mac_addr(struct net_device *dev, void *_addr)
|
|
{
|
|
int ret;
|
|
struct sockaddr *addr = _addr;
|
|
struct port_info *pi = netdev_priv(dev);
|
|
|
|
if (!is_valid_ether_addr(addr->sa_data))
|
|
return -EINVAL;
|
|
|
|
ret = t4vf_change_mac(pi->adapter, pi->viid, pi->xact_addr_filt,
|
|
addr->sa_data, true);
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
|
|
pi->xact_addr_filt = ret;
|
|
return 0;
|
|
}
|
|
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
/*
|
|
* Poll all of our receive queues. This is called outside of normal interrupt
|
|
* context.
|
|
*/
|
|
static void cxgb4vf_poll_controller(struct net_device *dev)
|
|
{
|
|
struct port_info *pi = netdev_priv(dev);
|
|
struct adapter *adapter = pi->adapter;
|
|
|
|
if (adapter->flags & USING_MSIX) {
|
|
struct sge_eth_rxq *rxq;
|
|
int nqsets;
|
|
|
|
rxq = &adapter->sge.ethrxq[pi->first_qset];
|
|
for (nqsets = pi->nqsets; nqsets; nqsets--) {
|
|
t4vf_sge_intr_msix(0, &rxq->rspq);
|
|
rxq++;
|
|
}
|
|
} else
|
|
t4vf_intr_handler(adapter)(0, adapter);
|
|
}
|
|
#endif
|
|
|
|
/*
|
|
* Ethtool operations.
|
|
* ===================
|
|
*
|
|
* Note that we don't support any ethtool operations which change the physical
|
|
* state of the port to which we're linked.
|
|
*/
|
|
|
|
/*
|
|
* Return current port link settings.
|
|
*/
|
|
static int cxgb4vf_get_settings(struct net_device *dev,
|
|
struct ethtool_cmd *cmd)
|
|
{
|
|
const struct port_info *pi = netdev_priv(dev);
|
|
|
|
cmd->supported = pi->link_cfg.supported;
|
|
cmd->advertising = pi->link_cfg.advertising;
|
|
cmd->speed = netif_carrier_ok(dev) ? pi->link_cfg.speed : -1;
|
|
cmd->duplex = DUPLEX_FULL;
|
|
|
|
cmd->port = (cmd->supported & SUPPORTED_TP) ? PORT_TP : PORT_FIBRE;
|
|
cmd->phy_address = pi->port_id;
|
|
cmd->transceiver = XCVR_EXTERNAL;
|
|
cmd->autoneg = pi->link_cfg.autoneg;
|
|
cmd->maxtxpkt = 0;
|
|
cmd->maxrxpkt = 0;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Return our driver information.
|
|
*/
|
|
static void cxgb4vf_get_drvinfo(struct net_device *dev,
|
|
struct ethtool_drvinfo *drvinfo)
|
|
{
|
|
struct adapter *adapter = netdev2adap(dev);
|
|
|
|
strcpy(drvinfo->driver, KBUILD_MODNAME);
|
|
strcpy(drvinfo->version, DRV_VERSION);
|
|
strcpy(drvinfo->bus_info, pci_name(to_pci_dev(dev->dev.parent)));
|
|
snprintf(drvinfo->fw_version, sizeof(drvinfo->fw_version),
|
|
"%u.%u.%u.%u, TP %u.%u.%u.%u",
|
|
FW_HDR_FW_VER_MAJOR_GET(adapter->params.dev.fwrev),
|
|
FW_HDR_FW_VER_MINOR_GET(adapter->params.dev.fwrev),
|
|
FW_HDR_FW_VER_MICRO_GET(adapter->params.dev.fwrev),
|
|
FW_HDR_FW_VER_BUILD_GET(adapter->params.dev.fwrev),
|
|
FW_HDR_FW_VER_MAJOR_GET(adapter->params.dev.tprev),
|
|
FW_HDR_FW_VER_MINOR_GET(adapter->params.dev.tprev),
|
|
FW_HDR_FW_VER_MICRO_GET(adapter->params.dev.tprev),
|
|
FW_HDR_FW_VER_BUILD_GET(adapter->params.dev.tprev));
|
|
}
|
|
|
|
/*
|
|
* Return current adapter message level.
|
|
*/
|
|
static u32 cxgb4vf_get_msglevel(struct net_device *dev)
|
|
{
|
|
return netdev2adap(dev)->msg_enable;
|
|
}
|
|
|
|
/*
|
|
* Set current adapter message level.
|
|
*/
|
|
static void cxgb4vf_set_msglevel(struct net_device *dev, u32 msglevel)
|
|
{
|
|
netdev2adap(dev)->msg_enable = msglevel;
|
|
}
|
|
|
|
/*
|
|
* Return the device's current Queue Set ring size parameters along with the
|
|
* allowed maximum values. Since ethtool doesn't understand the concept of
|
|
* multi-queue devices, we just return the current values associated with the
|
|
* first Queue Set.
|
|
*/
|
|
static void cxgb4vf_get_ringparam(struct net_device *dev,
|
|
struct ethtool_ringparam *rp)
|
|
{
|
|
const struct port_info *pi = netdev_priv(dev);
|
|
const struct sge *s = &pi->adapter->sge;
|
|
|
|
rp->rx_max_pending = MAX_RX_BUFFERS;
|
|
rp->rx_mini_max_pending = MAX_RSPQ_ENTRIES;
|
|
rp->rx_jumbo_max_pending = 0;
|
|
rp->tx_max_pending = MAX_TXQ_ENTRIES;
|
|
|
|
rp->rx_pending = s->ethrxq[pi->first_qset].fl.size - MIN_FL_RESID;
|
|
rp->rx_mini_pending = s->ethrxq[pi->first_qset].rspq.size;
|
|
rp->rx_jumbo_pending = 0;
|
|
rp->tx_pending = s->ethtxq[pi->first_qset].q.size;
|
|
}
|
|
|
|
/*
|
|
* Set the Queue Set ring size parameters for the device. Again, since
|
|
* ethtool doesn't allow for the concept of multiple queues per device, we'll
|
|
* apply these new values across all of the Queue Sets associated with the
|
|
* device -- after vetting them of course!
|
|
*/
|
|
static int cxgb4vf_set_ringparam(struct net_device *dev,
|
|
struct ethtool_ringparam *rp)
|
|
{
|
|
const struct port_info *pi = netdev_priv(dev);
|
|
struct adapter *adapter = pi->adapter;
|
|
struct sge *s = &adapter->sge;
|
|
int qs;
|
|
|
|
if (rp->rx_pending > MAX_RX_BUFFERS ||
|
|
rp->rx_jumbo_pending ||
|
|
rp->tx_pending > MAX_TXQ_ENTRIES ||
|
|
rp->rx_mini_pending > MAX_RSPQ_ENTRIES ||
|
|
rp->rx_mini_pending < MIN_RSPQ_ENTRIES ||
|
|
rp->rx_pending < MIN_FL_ENTRIES ||
|
|
rp->tx_pending < MIN_TXQ_ENTRIES)
|
|
return -EINVAL;
|
|
|
|
if (adapter->flags & FULL_INIT_DONE)
|
|
return -EBUSY;
|
|
|
|
for (qs = pi->first_qset; qs < pi->first_qset + pi->nqsets; qs++) {
|
|
s->ethrxq[qs].fl.size = rp->rx_pending + MIN_FL_RESID;
|
|
s->ethrxq[qs].rspq.size = rp->rx_mini_pending;
|
|
s->ethtxq[qs].q.size = rp->tx_pending;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Return the interrupt holdoff timer and count for the first Queue Set on the
|
|
* device. Our extension ioctl() (the cxgbtool interface) allows the
|
|
* interrupt holdoff timer to be read on all of the device's Queue Sets.
|
|
*/
|
|
static int cxgb4vf_get_coalesce(struct net_device *dev,
|
|
struct ethtool_coalesce *coalesce)
|
|
{
|
|
const struct port_info *pi = netdev_priv(dev);
|
|
const struct adapter *adapter = pi->adapter;
|
|
const struct sge_rspq *rspq = &adapter->sge.ethrxq[pi->first_qset].rspq;
|
|
|
|
coalesce->rx_coalesce_usecs = qtimer_val(adapter, rspq);
|
|
coalesce->rx_max_coalesced_frames =
|
|
((rspq->intr_params & QINTR_CNT_EN)
|
|
? adapter->sge.counter_val[rspq->pktcnt_idx]
|
|
: 0);
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Set the RX interrupt holdoff timer and count for the first Queue Set on the
|
|
* interface. Our extension ioctl() (the cxgbtool interface) allows us to set
|
|
* the interrupt holdoff timer on any of the device's Queue Sets.
|
|
*/
|
|
static int cxgb4vf_set_coalesce(struct net_device *dev,
|
|
struct ethtool_coalesce *coalesce)
|
|
{
|
|
const struct port_info *pi = netdev_priv(dev);
|
|
struct adapter *adapter = pi->adapter;
|
|
|
|
return set_rxq_intr_params(adapter,
|
|
&adapter->sge.ethrxq[pi->first_qset].rspq,
|
|
coalesce->rx_coalesce_usecs,
|
|
coalesce->rx_max_coalesced_frames);
|
|
}
|
|
|
|
/*
|
|
* Report current port link pause parameter settings.
|
|
*/
|
|
static void cxgb4vf_get_pauseparam(struct net_device *dev,
|
|
struct ethtool_pauseparam *pauseparam)
|
|
{
|
|
struct port_info *pi = netdev_priv(dev);
|
|
|
|
pauseparam->autoneg = (pi->link_cfg.requested_fc & PAUSE_AUTONEG) != 0;
|
|
pauseparam->rx_pause = (pi->link_cfg.fc & PAUSE_RX) != 0;
|
|
pauseparam->tx_pause = (pi->link_cfg.fc & PAUSE_TX) != 0;
|
|
}
|
|
|
|
/*
|
|
* Return whether RX Checksum Offloading is currently enabled for the device.
|
|
*/
|
|
static u32 cxgb4vf_get_rx_csum(struct net_device *dev)
|
|
{
|
|
struct port_info *pi = netdev_priv(dev);
|
|
|
|
return (pi->rx_offload & RX_CSO) != 0;
|
|
}
|
|
|
|
/*
|
|
* Turn RX Checksum Offloading on or off for the device.
|
|
*/
|
|
static int cxgb4vf_set_rx_csum(struct net_device *dev, u32 csum)
|
|
{
|
|
struct port_info *pi = netdev_priv(dev);
|
|
|
|
if (csum)
|
|
pi->rx_offload |= RX_CSO;
|
|
else
|
|
pi->rx_offload &= ~RX_CSO;
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Identify the port by blinking the port's LED.
|
|
*/
|
|
static int cxgb4vf_phys_id(struct net_device *dev, u32 id)
|
|
{
|
|
struct port_info *pi = netdev_priv(dev);
|
|
|
|
return t4vf_identify_port(pi->adapter, pi->viid, 5);
|
|
}
|
|
|
|
/*
|
|
* Port stats maintained per queue of the port.
|
|
*/
|
|
struct queue_port_stats {
|
|
u64 tso;
|
|
u64 tx_csum;
|
|
u64 rx_csum;
|
|
u64 vlan_ex;
|
|
u64 vlan_ins;
|
|
u64 lro_pkts;
|
|
u64 lro_merged;
|
|
};
|
|
|
|
/*
|
|
* Strings for the ETH_SS_STATS statistics set ("ethtool -S"). Note that
|
|
* these need to match the order of statistics returned by
|
|
* t4vf_get_port_stats().
|
|
*/
|
|
static const char stats_strings[][ETH_GSTRING_LEN] = {
|
|
/*
|
|
* These must match the layout of the t4vf_port_stats structure.
|
|
*/
|
|
"TxBroadcastBytes ",
|
|
"TxBroadcastFrames ",
|
|
"TxMulticastBytes ",
|
|
"TxMulticastFrames ",
|
|
"TxUnicastBytes ",
|
|
"TxUnicastFrames ",
|
|
"TxDroppedFrames ",
|
|
"TxOffloadBytes ",
|
|
"TxOffloadFrames ",
|
|
"RxBroadcastBytes ",
|
|
"RxBroadcastFrames ",
|
|
"RxMulticastBytes ",
|
|
"RxMulticastFrames ",
|
|
"RxUnicastBytes ",
|
|
"RxUnicastFrames ",
|
|
"RxErrorFrames ",
|
|
|
|
/*
|
|
* These are accumulated per-queue statistics and must match the
|
|
* order of the fields in the queue_port_stats structure.
|
|
*/
|
|
"TSO ",
|
|
"TxCsumOffload ",
|
|
"RxCsumGood ",
|
|
"VLANextractions ",
|
|
"VLANinsertions ",
|
|
"GROPackets ",
|
|
"GROMerged ",
|
|
};
|
|
|
|
/*
|
|
* Return the number of statistics in the specified statistics set.
|
|
*/
|
|
static int cxgb4vf_get_sset_count(struct net_device *dev, int sset)
|
|
{
|
|
switch (sset) {
|
|
case ETH_SS_STATS:
|
|
return ARRAY_SIZE(stats_strings);
|
|
default:
|
|
return -EOPNOTSUPP;
|
|
}
|
|
/*NOTREACHED*/
|
|
}
|
|
|
|
/*
|
|
* Return the strings for the specified statistics set.
|
|
*/
|
|
static void cxgb4vf_get_strings(struct net_device *dev,
|
|
u32 sset,
|
|
u8 *data)
|
|
{
|
|
switch (sset) {
|
|
case ETH_SS_STATS:
|
|
memcpy(data, stats_strings, sizeof(stats_strings));
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Small utility routine to accumulate queue statistics across the queues of
|
|
* a "port".
|
|
*/
|
|
static void collect_sge_port_stats(const struct adapter *adapter,
|
|
const struct port_info *pi,
|
|
struct queue_port_stats *stats)
|
|
{
|
|
const struct sge_eth_txq *txq = &adapter->sge.ethtxq[pi->first_qset];
|
|
const struct sge_eth_rxq *rxq = &adapter->sge.ethrxq[pi->first_qset];
|
|
int qs;
|
|
|
|
memset(stats, 0, sizeof(*stats));
|
|
for (qs = 0; qs < pi->nqsets; qs++, rxq++, txq++) {
|
|
stats->tso += txq->tso;
|
|
stats->tx_csum += txq->tx_cso;
|
|
stats->rx_csum += rxq->stats.rx_cso;
|
|
stats->vlan_ex += rxq->stats.vlan_ex;
|
|
stats->vlan_ins += txq->vlan_ins;
|
|
stats->lro_pkts += rxq->stats.lro_pkts;
|
|
stats->lro_merged += rxq->stats.lro_merged;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Return the ETH_SS_STATS statistics set.
|
|
*/
|
|
static void cxgb4vf_get_ethtool_stats(struct net_device *dev,
|
|
struct ethtool_stats *stats,
|
|
u64 *data)
|
|
{
|
|
struct port_info *pi = netdev2pinfo(dev);
|
|
struct adapter *adapter = pi->adapter;
|
|
int err = t4vf_get_port_stats(adapter, pi->pidx,
|
|
(struct t4vf_port_stats *)data);
|
|
if (err)
|
|
memset(data, 0, sizeof(struct t4vf_port_stats));
|
|
|
|
data += sizeof(struct t4vf_port_stats) / sizeof(u64);
|
|
collect_sge_port_stats(adapter, pi, (struct queue_port_stats *)data);
|
|
}
|
|
|
|
/*
|
|
* Return the size of our register map.
|
|
*/
|
|
static int cxgb4vf_get_regs_len(struct net_device *dev)
|
|
{
|
|
return T4VF_REGMAP_SIZE;
|
|
}
|
|
|
|
/*
|
|
* Dump a block of registers, start to end inclusive, into a buffer.
|
|
*/
|
|
static void reg_block_dump(struct adapter *adapter, void *regbuf,
|
|
unsigned int start, unsigned int end)
|
|
{
|
|
u32 *bp = regbuf + start - T4VF_REGMAP_START;
|
|
|
|
for ( ; start <= end; start += sizeof(u32)) {
|
|
/*
|
|
* Avoid reading the Mailbox Control register since that
|
|
* can trigger a Mailbox Ownership Arbitration cycle and
|
|
* interfere with communication with the firmware.
|
|
*/
|
|
if (start == T4VF_CIM_BASE_ADDR + CIM_VF_EXT_MAILBOX_CTRL)
|
|
*bp++ = 0xffff;
|
|
else
|
|
*bp++ = t4_read_reg(adapter, start);
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Copy our entire register map into the provided buffer.
|
|
*/
|
|
static void cxgb4vf_get_regs(struct net_device *dev,
|
|
struct ethtool_regs *regs,
|
|
void *regbuf)
|
|
{
|
|
struct adapter *adapter = netdev2adap(dev);
|
|
|
|
regs->version = mk_adap_vers(adapter);
|
|
|
|
/*
|
|
* Fill in register buffer with our register map.
|
|
*/
|
|
memset(regbuf, 0, T4VF_REGMAP_SIZE);
|
|
|
|
reg_block_dump(adapter, regbuf,
|
|
T4VF_SGE_BASE_ADDR + T4VF_MOD_MAP_SGE_FIRST,
|
|
T4VF_SGE_BASE_ADDR + T4VF_MOD_MAP_SGE_LAST);
|
|
reg_block_dump(adapter, regbuf,
|
|
T4VF_MPS_BASE_ADDR + T4VF_MOD_MAP_MPS_FIRST,
|
|
T4VF_MPS_BASE_ADDR + T4VF_MOD_MAP_MPS_LAST);
|
|
reg_block_dump(adapter, regbuf,
|
|
T4VF_PL_BASE_ADDR + T4VF_MOD_MAP_PL_FIRST,
|
|
T4VF_PL_BASE_ADDR + T4VF_MOD_MAP_PL_LAST);
|
|
reg_block_dump(adapter, regbuf,
|
|
T4VF_CIM_BASE_ADDR + T4VF_MOD_MAP_CIM_FIRST,
|
|
T4VF_CIM_BASE_ADDR + T4VF_MOD_MAP_CIM_LAST);
|
|
|
|
reg_block_dump(adapter, regbuf,
|
|
T4VF_MBDATA_BASE_ADDR + T4VF_MBDATA_FIRST,
|
|
T4VF_MBDATA_BASE_ADDR + T4VF_MBDATA_LAST);
|
|
}
|
|
|
|
/*
|
|
* Report current Wake On LAN settings.
|
|
*/
|
|
static void cxgb4vf_get_wol(struct net_device *dev,
|
|
struct ethtool_wolinfo *wol)
|
|
{
|
|
wol->supported = 0;
|
|
wol->wolopts = 0;
|
|
memset(&wol->sopass, 0, sizeof(wol->sopass));
|
|
}
|
|
|
|
/*
|
|
* TCP Segmentation Offload flags which we support.
|
|
*/
|
|
#define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
|
|
|
|
/*
|
|
* Set TCP Segmentation Offloading feature capabilities.
|
|
*/
|
|
static int cxgb4vf_set_tso(struct net_device *dev, u32 tso)
|
|
{
|
|
if (tso)
|
|
dev->features |= TSO_FLAGS;
|
|
else
|
|
dev->features &= ~TSO_FLAGS;
|
|
return 0;
|
|
}
|
|
|
|
static struct ethtool_ops cxgb4vf_ethtool_ops = {
|
|
.get_settings = cxgb4vf_get_settings,
|
|
.get_drvinfo = cxgb4vf_get_drvinfo,
|
|
.get_msglevel = cxgb4vf_get_msglevel,
|
|
.set_msglevel = cxgb4vf_set_msglevel,
|
|
.get_ringparam = cxgb4vf_get_ringparam,
|
|
.set_ringparam = cxgb4vf_set_ringparam,
|
|
.get_coalesce = cxgb4vf_get_coalesce,
|
|
.set_coalesce = cxgb4vf_set_coalesce,
|
|
.get_pauseparam = cxgb4vf_get_pauseparam,
|
|
.get_rx_csum = cxgb4vf_get_rx_csum,
|
|
.set_rx_csum = cxgb4vf_set_rx_csum,
|
|
.set_tx_csum = ethtool_op_set_tx_ipv6_csum,
|
|
.set_sg = ethtool_op_set_sg,
|
|
.get_link = ethtool_op_get_link,
|
|
.get_strings = cxgb4vf_get_strings,
|
|
.phys_id = cxgb4vf_phys_id,
|
|
.get_sset_count = cxgb4vf_get_sset_count,
|
|
.get_ethtool_stats = cxgb4vf_get_ethtool_stats,
|
|
.get_regs_len = cxgb4vf_get_regs_len,
|
|
.get_regs = cxgb4vf_get_regs,
|
|
.get_wol = cxgb4vf_get_wol,
|
|
.set_tso = cxgb4vf_set_tso,
|
|
};
|
|
|
|
/*
|
|
* /sys/kernel/debug/cxgb4vf support code and data.
|
|
* ================================================
|
|
*/
|
|
|
|
/*
|
|
* Show SGE Queue Set information. We display QPL Queues Sets per line.
|
|
*/
|
|
#define QPL 4
|
|
|
|
static int sge_qinfo_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct adapter *adapter = seq->private;
|
|
int eth_entries = DIV_ROUND_UP(adapter->sge.ethqsets, QPL);
|
|
int qs, r = (uintptr_t)v - 1;
|
|
|
|
if (r)
|
|
seq_putc(seq, '\n');
|
|
|
|
#define S3(fmt_spec, s, v) \
|
|
do {\
|
|
seq_printf(seq, "%-12s", s); \
|
|
for (qs = 0; qs < n; ++qs) \
|
|
seq_printf(seq, " %16" fmt_spec, v); \
|
|
seq_putc(seq, '\n'); \
|
|
} while (0)
|
|
#define S(s, v) S3("s", s, v)
|
|
#define T(s, v) S3("u", s, txq[qs].v)
|
|
#define R(s, v) S3("u", s, rxq[qs].v)
|
|
|
|
if (r < eth_entries) {
|
|
const struct sge_eth_rxq *rxq = &adapter->sge.ethrxq[r * QPL];
|
|
const struct sge_eth_txq *txq = &adapter->sge.ethtxq[r * QPL];
|
|
int n = min(QPL, adapter->sge.ethqsets - QPL * r);
|
|
|
|
S("QType:", "Ethernet");
|
|
S("Interface:",
|
|
(rxq[qs].rspq.netdev
|
|
? rxq[qs].rspq.netdev->name
|
|
: "N/A"));
|
|
S3("d", "Port:",
|
|
(rxq[qs].rspq.netdev
|
|
? ((struct port_info *)
|
|
netdev_priv(rxq[qs].rspq.netdev))->port_id
|
|
: -1));
|
|
T("TxQ ID:", q.abs_id);
|
|
T("TxQ size:", q.size);
|
|
T("TxQ inuse:", q.in_use);
|
|
T("TxQ PIdx:", q.pidx);
|
|
T("TxQ CIdx:", q.cidx);
|
|
R("RspQ ID:", rspq.abs_id);
|
|
R("RspQ size:", rspq.size);
|
|
R("RspQE size:", rspq.iqe_len);
|
|
S3("u", "Intr delay:", qtimer_val(adapter, &rxq[qs].rspq));
|
|
S3("u", "Intr pktcnt:",
|
|
adapter->sge.counter_val[rxq[qs].rspq.pktcnt_idx]);
|
|
R("RspQ CIdx:", rspq.cidx);
|
|
R("RspQ Gen:", rspq.gen);
|
|
R("FL ID:", fl.abs_id);
|
|
R("FL size:", fl.size - MIN_FL_RESID);
|
|
R("FL avail:", fl.avail);
|
|
R("FL PIdx:", fl.pidx);
|
|
R("FL CIdx:", fl.cidx);
|
|
return 0;
|
|
}
|
|
|
|
r -= eth_entries;
|
|
if (r == 0) {
|
|
const struct sge_rspq *evtq = &adapter->sge.fw_evtq;
|
|
|
|
seq_printf(seq, "%-12s %16s\n", "QType:", "FW event queue");
|
|
seq_printf(seq, "%-12s %16u\n", "RspQ ID:", evtq->abs_id);
|
|
seq_printf(seq, "%-12s %16u\n", "Intr delay:",
|
|
qtimer_val(adapter, evtq));
|
|
seq_printf(seq, "%-12s %16u\n", "Intr pktcnt:",
|
|
adapter->sge.counter_val[evtq->pktcnt_idx]);
|
|
seq_printf(seq, "%-12s %16u\n", "RspQ Cidx:", evtq->cidx);
|
|
seq_printf(seq, "%-12s %16u\n", "RspQ Gen:", evtq->gen);
|
|
} else if (r == 1) {
|
|
const struct sge_rspq *intrq = &adapter->sge.intrq;
|
|
|
|
seq_printf(seq, "%-12s %16s\n", "QType:", "Interrupt Queue");
|
|
seq_printf(seq, "%-12s %16u\n", "RspQ ID:", intrq->abs_id);
|
|
seq_printf(seq, "%-12s %16u\n", "Intr delay:",
|
|
qtimer_val(adapter, intrq));
|
|
seq_printf(seq, "%-12s %16u\n", "Intr pktcnt:",
|
|
adapter->sge.counter_val[intrq->pktcnt_idx]);
|
|
seq_printf(seq, "%-12s %16u\n", "RspQ Cidx:", intrq->cidx);
|
|
seq_printf(seq, "%-12s %16u\n", "RspQ Gen:", intrq->gen);
|
|
}
|
|
|
|
#undef R
|
|
#undef T
|
|
#undef S
|
|
#undef S3
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Return the number of "entries" in our "file". We group the multi-Queue
|
|
* sections with QPL Queue Sets per "entry". The sections of the output are:
|
|
*
|
|
* Ethernet RX/TX Queue Sets
|
|
* Firmware Event Queue
|
|
* Forwarded Interrupt Queue (if in MSI mode)
|
|
*/
|
|
static int sge_queue_entries(const struct adapter *adapter)
|
|
{
|
|
return DIV_ROUND_UP(adapter->sge.ethqsets, QPL) + 1 +
|
|
((adapter->flags & USING_MSI) != 0);
|
|
}
|
|
|
|
static void *sge_queue_start(struct seq_file *seq, loff_t *pos)
|
|
{
|
|
int entries = sge_queue_entries(seq->private);
|
|
|
|
return *pos < entries ? (void *)((uintptr_t)*pos + 1) : NULL;
|
|
}
|
|
|
|
static void sge_queue_stop(struct seq_file *seq, void *v)
|
|
{
|
|
}
|
|
|
|
static void *sge_queue_next(struct seq_file *seq, void *v, loff_t *pos)
|
|
{
|
|
int entries = sge_queue_entries(seq->private);
|
|
|
|
++*pos;
|
|
return *pos < entries ? (void *)((uintptr_t)*pos + 1) : NULL;
|
|
}
|
|
|
|
static const struct seq_operations sge_qinfo_seq_ops = {
|
|
.start = sge_queue_start,
|
|
.next = sge_queue_next,
|
|
.stop = sge_queue_stop,
|
|
.show = sge_qinfo_show
|
|
};
|
|
|
|
static int sge_qinfo_open(struct inode *inode, struct file *file)
|
|
{
|
|
int res = seq_open(file, &sge_qinfo_seq_ops);
|
|
|
|
if (!res) {
|
|
struct seq_file *seq = file->private_data;
|
|
seq->private = inode->i_private;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static const struct file_operations sge_qinfo_debugfs_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = sge_qinfo_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/*
|
|
* Show SGE Queue Set statistics. We display QPL Queues Sets per line.
|
|
*/
|
|
#define QPL 4
|
|
|
|
static int sge_qstats_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct adapter *adapter = seq->private;
|
|
int eth_entries = DIV_ROUND_UP(adapter->sge.ethqsets, QPL);
|
|
int qs, r = (uintptr_t)v - 1;
|
|
|
|
if (r)
|
|
seq_putc(seq, '\n');
|
|
|
|
#define S3(fmt, s, v) \
|
|
do { \
|
|
seq_printf(seq, "%-16s", s); \
|
|
for (qs = 0; qs < n; ++qs) \
|
|
seq_printf(seq, " %8" fmt, v); \
|
|
seq_putc(seq, '\n'); \
|
|
} while (0)
|
|
#define S(s, v) S3("s", s, v)
|
|
|
|
#define T3(fmt, s, v) S3(fmt, s, txq[qs].v)
|
|
#define T(s, v) T3("lu", s, v)
|
|
|
|
#define R3(fmt, s, v) S3(fmt, s, rxq[qs].v)
|
|
#define R(s, v) R3("lu", s, v)
|
|
|
|
if (r < eth_entries) {
|
|
const struct sge_eth_rxq *rxq = &adapter->sge.ethrxq[r * QPL];
|
|
const struct sge_eth_txq *txq = &adapter->sge.ethtxq[r * QPL];
|
|
int n = min(QPL, adapter->sge.ethqsets - QPL * r);
|
|
|
|
S("QType:", "Ethernet");
|
|
S("Interface:",
|
|
(rxq[qs].rspq.netdev
|
|
? rxq[qs].rspq.netdev->name
|
|
: "N/A"));
|
|
R3("u", "RspQNullInts:", rspq.unhandled_irqs);
|
|
R("RxPackets:", stats.pkts);
|
|
R("RxCSO:", stats.rx_cso);
|
|
R("VLANxtract:", stats.vlan_ex);
|
|
R("LROmerged:", stats.lro_merged);
|
|
R("LROpackets:", stats.lro_pkts);
|
|
R("RxDrops:", stats.rx_drops);
|
|
T("TSO:", tso);
|
|
T("TxCSO:", tx_cso);
|
|
T("VLANins:", vlan_ins);
|
|
T("TxQFull:", q.stops);
|
|
T("TxQRestarts:", q.restarts);
|
|
T("TxMapErr:", mapping_err);
|
|
R("FLAllocErr:", fl.alloc_failed);
|
|
R("FLLrgAlcErr:", fl.large_alloc_failed);
|
|
R("FLStarving:", fl.starving);
|
|
return 0;
|
|
}
|
|
|
|
r -= eth_entries;
|
|
if (r == 0) {
|
|
const struct sge_rspq *evtq = &adapter->sge.fw_evtq;
|
|
|
|
seq_printf(seq, "%-8s %16s\n", "QType:", "FW event queue");
|
|
seq_printf(seq, "%-16s %8u\n", "RspQNullInts:",
|
|
evtq->unhandled_irqs);
|
|
seq_printf(seq, "%-16s %8u\n", "RspQ CIdx:", evtq->cidx);
|
|
seq_printf(seq, "%-16s %8u\n", "RspQ Gen:", evtq->gen);
|
|
} else if (r == 1) {
|
|
const struct sge_rspq *intrq = &adapter->sge.intrq;
|
|
|
|
seq_printf(seq, "%-8s %16s\n", "QType:", "Interrupt Queue");
|
|
seq_printf(seq, "%-16s %8u\n", "RspQNullInts:",
|
|
intrq->unhandled_irqs);
|
|
seq_printf(seq, "%-16s %8u\n", "RspQ CIdx:", intrq->cidx);
|
|
seq_printf(seq, "%-16s %8u\n", "RspQ Gen:", intrq->gen);
|
|
}
|
|
|
|
#undef R
|
|
#undef T
|
|
#undef S
|
|
#undef R3
|
|
#undef T3
|
|
#undef S3
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Return the number of "entries" in our "file". We group the multi-Queue
|
|
* sections with QPL Queue Sets per "entry". The sections of the output are:
|
|
*
|
|
* Ethernet RX/TX Queue Sets
|
|
* Firmware Event Queue
|
|
* Forwarded Interrupt Queue (if in MSI mode)
|
|
*/
|
|
static int sge_qstats_entries(const struct adapter *adapter)
|
|
{
|
|
return DIV_ROUND_UP(adapter->sge.ethqsets, QPL) + 1 +
|
|
((adapter->flags & USING_MSI) != 0);
|
|
}
|
|
|
|
static void *sge_qstats_start(struct seq_file *seq, loff_t *pos)
|
|
{
|
|
int entries = sge_qstats_entries(seq->private);
|
|
|
|
return *pos < entries ? (void *)((uintptr_t)*pos + 1) : NULL;
|
|
}
|
|
|
|
static void sge_qstats_stop(struct seq_file *seq, void *v)
|
|
{
|
|
}
|
|
|
|
static void *sge_qstats_next(struct seq_file *seq, void *v, loff_t *pos)
|
|
{
|
|
int entries = sge_qstats_entries(seq->private);
|
|
|
|
(*pos)++;
|
|
return *pos < entries ? (void *)((uintptr_t)*pos + 1) : NULL;
|
|
}
|
|
|
|
static const struct seq_operations sge_qstats_seq_ops = {
|
|
.start = sge_qstats_start,
|
|
.next = sge_qstats_next,
|
|
.stop = sge_qstats_stop,
|
|
.show = sge_qstats_show
|
|
};
|
|
|
|
static int sge_qstats_open(struct inode *inode, struct file *file)
|
|
{
|
|
int res = seq_open(file, &sge_qstats_seq_ops);
|
|
|
|
if (res == 0) {
|
|
struct seq_file *seq = file->private_data;
|
|
seq->private = inode->i_private;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static const struct file_operations sge_qstats_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = sge_qstats_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/*
|
|
* Show PCI-E SR-IOV Virtual Function Resource Limits.
|
|
*/
|
|
static int resources_show(struct seq_file *seq, void *v)
|
|
{
|
|
struct adapter *adapter = seq->private;
|
|
struct vf_resources *vfres = &adapter->params.vfres;
|
|
|
|
#define S(desc, fmt, var) \
|
|
seq_printf(seq, "%-60s " fmt "\n", \
|
|
desc " (" #var "):", vfres->var)
|
|
|
|
S("Virtual Interfaces", "%d", nvi);
|
|
S("Egress Queues", "%d", neq);
|
|
S("Ethernet Control", "%d", nethctrl);
|
|
S("Ingress Queues/w Free Lists/Interrupts", "%d", niqflint);
|
|
S("Ingress Queues", "%d", niq);
|
|
S("Traffic Class", "%d", tc);
|
|
S("Port Access Rights Mask", "%#x", pmask);
|
|
S("MAC Address Filters", "%d", nexactf);
|
|
S("Firmware Command Read Capabilities", "%#x", r_caps);
|
|
S("Firmware Command Write/Execute Capabilities", "%#x", wx_caps);
|
|
|
|
#undef S
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int resources_open(struct inode *inode, struct file *file)
|
|
{
|
|
return single_open(file, resources_show, inode->i_private);
|
|
}
|
|
|
|
static const struct file_operations resources_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = resources_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = single_release,
|
|
};
|
|
|
|
/*
|
|
* Show Virtual Interfaces.
|
|
*/
|
|
static int interfaces_show(struct seq_file *seq, void *v)
|
|
{
|
|
if (v == SEQ_START_TOKEN) {
|
|
seq_puts(seq, "Interface Port VIID\n");
|
|
} else {
|
|
struct adapter *adapter = seq->private;
|
|
int pidx = (uintptr_t)v - 2;
|
|
struct net_device *dev = adapter->port[pidx];
|
|
struct port_info *pi = netdev_priv(dev);
|
|
|
|
seq_printf(seq, "%9s %4d %#5x\n",
|
|
dev->name, pi->port_id, pi->viid);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline void *interfaces_get_idx(struct adapter *adapter, loff_t pos)
|
|
{
|
|
return pos <= adapter->params.nports
|
|
? (void *)(uintptr_t)(pos + 1)
|
|
: NULL;
|
|
}
|
|
|
|
static void *interfaces_start(struct seq_file *seq, loff_t *pos)
|
|
{
|
|
return *pos
|
|
? interfaces_get_idx(seq->private, *pos)
|
|
: SEQ_START_TOKEN;
|
|
}
|
|
|
|
static void *interfaces_next(struct seq_file *seq, void *v, loff_t *pos)
|
|
{
|
|
(*pos)++;
|
|
return interfaces_get_idx(seq->private, *pos);
|
|
}
|
|
|
|
static void interfaces_stop(struct seq_file *seq, void *v)
|
|
{
|
|
}
|
|
|
|
static const struct seq_operations interfaces_seq_ops = {
|
|
.start = interfaces_start,
|
|
.next = interfaces_next,
|
|
.stop = interfaces_stop,
|
|
.show = interfaces_show
|
|
};
|
|
|
|
static int interfaces_open(struct inode *inode, struct file *file)
|
|
{
|
|
int res = seq_open(file, &interfaces_seq_ops);
|
|
|
|
if (res == 0) {
|
|
struct seq_file *seq = file->private_data;
|
|
seq->private = inode->i_private;
|
|
}
|
|
return res;
|
|
}
|
|
|
|
static const struct file_operations interfaces_proc_fops = {
|
|
.owner = THIS_MODULE,
|
|
.open = interfaces_open,
|
|
.read = seq_read,
|
|
.llseek = seq_lseek,
|
|
.release = seq_release,
|
|
};
|
|
|
|
/*
|
|
* /sys/kernel/debugfs/cxgb4vf/ files list.
|
|
*/
|
|
struct cxgb4vf_debugfs_entry {
|
|
const char *name; /* name of debugfs node */
|
|
mode_t mode; /* file system mode */
|
|
const struct file_operations *fops;
|
|
};
|
|
|
|
static struct cxgb4vf_debugfs_entry debugfs_files[] = {
|
|
{ "sge_qinfo", S_IRUGO, &sge_qinfo_debugfs_fops },
|
|
{ "sge_qstats", S_IRUGO, &sge_qstats_proc_fops },
|
|
{ "resources", S_IRUGO, &resources_proc_fops },
|
|
{ "interfaces", S_IRUGO, &interfaces_proc_fops },
|
|
};
|
|
|
|
/*
|
|
* Module and device initialization and cleanup code.
|
|
* ==================================================
|
|
*/
|
|
|
|
/*
|
|
* Set up out /sys/kernel/debug/cxgb4vf sub-nodes. We assume that the
|
|
* directory (debugfs_root) has already been set up.
|
|
*/
|
|
static int __devinit setup_debugfs(struct adapter *adapter)
|
|
{
|
|
int i;
|
|
|
|
BUG_ON(IS_ERR_OR_NULL(adapter->debugfs_root));
|
|
|
|
/*
|
|
* Debugfs support is best effort.
|
|
*/
|
|
for (i = 0; i < ARRAY_SIZE(debugfs_files); i++)
|
|
(void)debugfs_create_file(debugfs_files[i].name,
|
|
debugfs_files[i].mode,
|
|
adapter->debugfs_root,
|
|
(void *)adapter,
|
|
debugfs_files[i].fops);
|
|
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* Tear down the /sys/kernel/debug/cxgb4vf sub-nodes created above. We leave
|
|
* it to our caller to tear down the directory (debugfs_root).
|
|
*/
|
|
static void cleanup_debugfs(struct adapter *adapter)
|
|
{
|
|
BUG_ON(IS_ERR_OR_NULL(adapter->debugfs_root));
|
|
|
|
/*
|
|
* Unlike our sister routine cleanup_proc(), we don't need to remove
|
|
* individual entries because a call will be made to
|
|
* debugfs_remove_recursive(). We just need to clean up any ancillary
|
|
* persistent state.
|
|
*/
|
|
/* nothing to do */
|
|
}
|
|
|
|
/*
|
|
* Perform early "adapter" initialization. This is where we discover what
|
|
* adapter parameters we're going to be using and initialize basic adapter
|
|
* hardware support.
|
|
*/
|
|
static int __devinit adap_init0(struct adapter *adapter)
|
|
{
|
|
struct vf_resources *vfres = &adapter->params.vfres;
|
|
struct sge_params *sge_params = &adapter->params.sge;
|
|
struct sge *s = &adapter->sge;
|
|
unsigned int ethqsets;
|
|
int err;
|
|
|
|
/*
|
|
* Wait for the device to become ready before proceeding ...
|
|
*/
|
|
err = t4vf_wait_dev_ready(adapter);
|
|
if (err) {
|
|
dev_err(adapter->pdev_dev, "device didn't become ready:"
|
|
" err=%d\n", err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Some environments do not properly handle PCIE FLRs -- e.g. in Linux
|
|
* 2.6.31 and later we can't call pci_reset_function() in order to
|
|
* issue an FLR because of a self- deadlock on the device semaphore.
|
|
* Meanwhile, the OS infrastructure doesn't issue FLRs in all the
|
|
* cases where they're needed -- for instance, some versions of KVM
|
|
* fail to reset "Assigned Devices" when the VM reboots. Therefore we
|
|
* use the firmware based reset in order to reset any per function
|
|
* state.
|
|
*/
|
|
err = t4vf_fw_reset(adapter);
|
|
if (err < 0) {
|
|
dev_err(adapter->pdev_dev, "FW reset failed: err=%d\n", err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Grab basic operational parameters. These will predominantly have
|
|
* been set up by the Physical Function Driver or will be hard coded
|
|
* into the adapter. We just have to live with them ... Note that
|
|
* we _must_ get our VPD parameters before our SGE parameters because
|
|
* we need to know the adapter's core clock from the VPD in order to
|
|
* properly decode the SGE Timer Values.
|
|
*/
|
|
err = t4vf_get_dev_params(adapter);
|
|
if (err) {
|
|
dev_err(adapter->pdev_dev, "unable to retrieve adapter"
|
|
" device parameters: err=%d\n", err);
|
|
return err;
|
|
}
|
|
err = t4vf_get_vpd_params(adapter);
|
|
if (err) {
|
|
dev_err(adapter->pdev_dev, "unable to retrieve adapter"
|
|
" VPD parameters: err=%d\n", err);
|
|
return err;
|
|
}
|
|
err = t4vf_get_sge_params(adapter);
|
|
if (err) {
|
|
dev_err(adapter->pdev_dev, "unable to retrieve adapter"
|
|
" SGE parameters: err=%d\n", err);
|
|
return err;
|
|
}
|
|
err = t4vf_get_rss_glb_config(adapter);
|
|
if (err) {
|
|
dev_err(adapter->pdev_dev, "unable to retrieve adapter"
|
|
" RSS parameters: err=%d\n", err);
|
|
return err;
|
|
}
|
|
if (adapter->params.rss.mode !=
|
|
FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL) {
|
|
dev_err(adapter->pdev_dev, "unable to operate with global RSS"
|
|
" mode %d\n", adapter->params.rss.mode);
|
|
return -EINVAL;
|
|
}
|
|
err = t4vf_sge_init(adapter);
|
|
if (err) {
|
|
dev_err(adapter->pdev_dev, "unable to use adapter parameters:"
|
|
" err=%d\n", err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Retrieve our RX interrupt holdoff timer values and counter
|
|
* threshold values from the SGE parameters.
|
|
*/
|
|
s->timer_val[0] = core_ticks_to_us(adapter,
|
|
TIMERVALUE0_GET(sge_params->sge_timer_value_0_and_1));
|
|
s->timer_val[1] = core_ticks_to_us(adapter,
|
|
TIMERVALUE1_GET(sge_params->sge_timer_value_0_and_1));
|
|
s->timer_val[2] = core_ticks_to_us(adapter,
|
|
TIMERVALUE0_GET(sge_params->sge_timer_value_2_and_3));
|
|
s->timer_val[3] = core_ticks_to_us(adapter,
|
|
TIMERVALUE1_GET(sge_params->sge_timer_value_2_and_3));
|
|
s->timer_val[4] = core_ticks_to_us(adapter,
|
|
TIMERVALUE0_GET(sge_params->sge_timer_value_4_and_5));
|
|
s->timer_val[5] = core_ticks_to_us(adapter,
|
|
TIMERVALUE1_GET(sge_params->sge_timer_value_4_and_5));
|
|
|
|
s->counter_val[0] =
|
|
THRESHOLD_0_GET(sge_params->sge_ingress_rx_threshold);
|
|
s->counter_val[1] =
|
|
THRESHOLD_1_GET(sge_params->sge_ingress_rx_threshold);
|
|
s->counter_val[2] =
|
|
THRESHOLD_2_GET(sge_params->sge_ingress_rx_threshold);
|
|
s->counter_val[3] =
|
|
THRESHOLD_3_GET(sge_params->sge_ingress_rx_threshold);
|
|
|
|
/*
|
|
* Grab our Virtual Interface resource allocation, extract the
|
|
* features that we're interested in and do a bit of sanity testing on
|
|
* what we discover.
|
|
*/
|
|
err = t4vf_get_vfres(adapter);
|
|
if (err) {
|
|
dev_err(adapter->pdev_dev, "unable to get virtual interface"
|
|
" resources: err=%d\n", err);
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* The number of "ports" which we support is equal to the number of
|
|
* Virtual Interfaces with which we've been provisioned.
|
|
*/
|
|
adapter->params.nports = vfres->nvi;
|
|
if (adapter->params.nports > MAX_NPORTS) {
|
|
dev_warn(adapter->pdev_dev, "only using %d of %d allowed"
|
|
" virtual interfaces\n", MAX_NPORTS,
|
|
adapter->params.nports);
|
|
adapter->params.nports = MAX_NPORTS;
|
|
}
|
|
|
|
/*
|
|
* We need to reserve a number of the ingress queues with Free List
|
|
* and Interrupt capabilities for special interrupt purposes (like
|
|
* asynchronous firmware messages, or forwarded interrupts if we're
|
|
* using MSI). The rest of the FL/Intr-capable ingress queues will be
|
|
* matched up one-for-one with Ethernet/Control egress queues in order
|
|
* to form "Queue Sets" which will be aportioned between the "ports".
|
|
* For each Queue Set, we'll need the ability to allocate two Egress
|
|
* Contexts -- one for the Ingress Queue Free List and one for the TX
|
|
* Ethernet Queue.
|
|
*/
|
|
ethqsets = vfres->niqflint - INGQ_EXTRAS;
|
|
if (vfres->nethctrl != ethqsets) {
|
|
dev_warn(adapter->pdev_dev, "unequal number of [available]"
|
|
" ingress/egress queues (%d/%d); using minimum for"
|
|
" number of Queue Sets\n", ethqsets, vfres->nethctrl);
|
|
ethqsets = min(vfres->nethctrl, ethqsets);
|
|
}
|
|
if (vfres->neq < ethqsets*2) {
|
|
dev_warn(adapter->pdev_dev, "Not enough Egress Contexts (%d)"
|
|
" to support Queue Sets (%d); reducing allowed Queue"
|
|
" Sets\n", vfres->neq, ethqsets);
|
|
ethqsets = vfres->neq/2;
|
|
}
|
|
if (ethqsets > MAX_ETH_QSETS) {
|
|
dev_warn(adapter->pdev_dev, "only using %d of %d allowed Queue"
|
|
" Sets\n", MAX_ETH_QSETS, adapter->sge.max_ethqsets);
|
|
ethqsets = MAX_ETH_QSETS;
|
|
}
|
|
if (vfres->niq != 0 || vfres->neq > ethqsets*2) {
|
|
dev_warn(adapter->pdev_dev, "unused resources niq/neq (%d/%d)"
|
|
" ignored\n", vfres->niq, vfres->neq - ethqsets*2);
|
|
}
|
|
adapter->sge.max_ethqsets = ethqsets;
|
|
|
|
/*
|
|
* Check for various parameter sanity issues. Most checks simply
|
|
* result in us using fewer resources than our provissioning but we
|
|
* do need at least one "port" with which to work ...
|
|
*/
|
|
if (adapter->sge.max_ethqsets < adapter->params.nports) {
|
|
dev_warn(adapter->pdev_dev, "only using %d of %d available"
|
|
" virtual interfaces (too few Queue Sets)\n",
|
|
adapter->sge.max_ethqsets, adapter->params.nports);
|
|
adapter->params.nports = adapter->sge.max_ethqsets;
|
|
}
|
|
if (adapter->params.nports == 0) {
|
|
dev_err(adapter->pdev_dev, "no virtual interfaces configured/"
|
|
"usable!\n");
|
|
return -EINVAL;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
static inline void init_rspq(struct sge_rspq *rspq, u8 timer_idx,
|
|
u8 pkt_cnt_idx, unsigned int size,
|
|
unsigned int iqe_size)
|
|
{
|
|
rspq->intr_params = (QINTR_TIMER_IDX(timer_idx) |
|
|
(pkt_cnt_idx < SGE_NCOUNTERS ? QINTR_CNT_EN : 0));
|
|
rspq->pktcnt_idx = (pkt_cnt_idx < SGE_NCOUNTERS
|
|
? pkt_cnt_idx
|
|
: 0);
|
|
rspq->iqe_len = iqe_size;
|
|
rspq->size = size;
|
|
}
|
|
|
|
/*
|
|
* Perform default configuration of DMA queues depending on the number and
|
|
* type of ports we found and the number of available CPUs. Most settings can
|
|
* be modified by the admin via ethtool and cxgbtool prior to the adapter
|
|
* being brought up for the first time.
|
|
*/
|
|
static void __devinit cfg_queues(struct adapter *adapter)
|
|
{
|
|
struct sge *s = &adapter->sge;
|
|
int q10g, n10g, qidx, pidx, qs;
|
|
size_t iqe_size;
|
|
|
|
/*
|
|
* We should not be called till we know how many Queue Sets we can
|
|
* support. In particular, this means that we need to know what kind
|
|
* of interrupts we'll be using ...
|
|
*/
|
|
BUG_ON((adapter->flags & (USING_MSIX|USING_MSI)) == 0);
|
|
|
|
/*
|
|
* Count the number of 10GbE Virtual Interfaces that we have.
|
|
*/
|
|
n10g = 0;
|
|
for_each_port(adapter, pidx)
|
|
n10g += is_10g_port(&adap2pinfo(adapter, pidx)->link_cfg);
|
|
|
|
/*
|
|
* We default to 1 queue per non-10G port and up to # of cores queues
|
|
* per 10G port.
|
|
*/
|
|
if (n10g == 0)
|
|
q10g = 0;
|
|
else {
|
|
int n1g = (adapter->params.nports - n10g);
|
|
q10g = (adapter->sge.max_ethqsets - n1g) / n10g;
|
|
if (q10g > num_online_cpus())
|
|
q10g = num_online_cpus();
|
|
}
|
|
|
|
/*
|
|
* Allocate the "Queue Sets" to the various Virtual Interfaces.
|
|
* The layout will be established in setup_sge_queues() when the
|
|
* adapter is brough up for the first time.
|
|
*/
|
|
qidx = 0;
|
|
for_each_port(adapter, pidx) {
|
|
struct port_info *pi = adap2pinfo(adapter, pidx);
|
|
|
|
pi->first_qset = qidx;
|
|
pi->nqsets = is_10g_port(&pi->link_cfg) ? q10g : 1;
|
|
qidx += pi->nqsets;
|
|
}
|
|
s->ethqsets = qidx;
|
|
|
|
/*
|
|
* The Ingress Queue Entry Size for our various Response Queues needs
|
|
* to be big enough to accommodate the largest message we can receive
|
|
* from the chip/firmware; which is 64 bytes ...
|
|
*/
|
|
iqe_size = 64;
|
|
|
|
/*
|
|
* Set up default Queue Set parameters ... Start off with the
|
|
* shortest interrupt holdoff timer.
|
|
*/
|
|
for (qs = 0; qs < s->max_ethqsets; qs++) {
|
|
struct sge_eth_rxq *rxq = &s->ethrxq[qs];
|
|
struct sge_eth_txq *txq = &s->ethtxq[qs];
|
|
|
|
init_rspq(&rxq->rspq, 0, 0, 1024, iqe_size);
|
|
rxq->fl.size = 72;
|
|
txq->q.size = 1024;
|
|
}
|
|
|
|
/*
|
|
* The firmware event queue is used for link state changes and
|
|
* notifications of TX DMA completions.
|
|
*/
|
|
init_rspq(&s->fw_evtq, SGE_TIMER_RSTRT_CNTR, 0, 512, iqe_size);
|
|
|
|
/*
|
|
* The forwarded interrupt queue is used when we're in MSI interrupt
|
|
* mode. In this mode all interrupts associated with RX queues will
|
|
* be forwarded to a single queue which we'll associate with our MSI
|
|
* interrupt vector. The messages dropped in the forwarded interrupt
|
|
* queue will indicate which ingress queue needs servicing ... This
|
|
* queue needs to be large enough to accommodate all of the ingress
|
|
* queues which are forwarding their interrupt (+1 to prevent the PIDX
|
|
* from equalling the CIDX if every ingress queue has an outstanding
|
|
* interrupt). The queue doesn't need to be any larger because no
|
|
* ingress queue will ever have more than one outstanding interrupt at
|
|
* any time ...
|
|
*/
|
|
init_rspq(&s->intrq, SGE_TIMER_RSTRT_CNTR, 0, MSIX_ENTRIES + 1,
|
|
iqe_size);
|
|
}
|
|
|
|
/*
|
|
* Reduce the number of Ethernet queues across all ports to at most n.
|
|
* n provides at least one queue per port.
|
|
*/
|
|
static void __devinit reduce_ethqs(struct adapter *adapter, int n)
|
|
{
|
|
int i;
|
|
struct port_info *pi;
|
|
|
|
/*
|
|
* While we have too many active Ether Queue Sets, interate across the
|
|
* "ports" and reduce their individual Queue Set allocations.
|
|
*/
|
|
BUG_ON(n < adapter->params.nports);
|
|
while (n < adapter->sge.ethqsets)
|
|
for_each_port(adapter, i) {
|
|
pi = adap2pinfo(adapter, i);
|
|
if (pi->nqsets > 1) {
|
|
pi->nqsets--;
|
|
adapter->sge.ethqsets--;
|
|
if (adapter->sge.ethqsets <= n)
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Reassign the starting Queue Sets for each of the "ports" ...
|
|
*/
|
|
n = 0;
|
|
for_each_port(adapter, i) {
|
|
pi = adap2pinfo(adapter, i);
|
|
pi->first_qset = n;
|
|
n += pi->nqsets;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* We need to grab enough MSI-X vectors to cover our interrupt needs. Ideally
|
|
* we get a separate MSI-X vector for every "Queue Set" plus any extras we
|
|
* need. Minimally we need one for every Virtual Interface plus those needed
|
|
* for our "extras". Note that this process may lower the maximum number of
|
|
* allowed Queue Sets ...
|
|
*/
|
|
static int __devinit enable_msix(struct adapter *adapter)
|
|
{
|
|
int i, err, want, need;
|
|
struct msix_entry entries[MSIX_ENTRIES];
|
|
struct sge *s = &adapter->sge;
|
|
|
|
for (i = 0; i < MSIX_ENTRIES; ++i)
|
|
entries[i].entry = i;
|
|
|
|
/*
|
|
* We _want_ enough MSI-X interrupts to cover all of our "Queue Sets"
|
|
* plus those needed for our "extras" (for example, the firmware
|
|
* message queue). We _need_ at least one "Queue Set" per Virtual
|
|
* Interface plus those needed for our "extras". So now we get to see
|
|
* if the song is right ...
|
|
*/
|
|
want = s->max_ethqsets + MSIX_EXTRAS;
|
|
need = adapter->params.nports + MSIX_EXTRAS;
|
|
while ((err = pci_enable_msix(adapter->pdev, entries, want)) >= need)
|
|
want = err;
|
|
|
|
if (err == 0) {
|
|
int nqsets = want - MSIX_EXTRAS;
|
|
if (nqsets < s->max_ethqsets) {
|
|
dev_warn(adapter->pdev_dev, "only enough MSI-X vectors"
|
|
" for %d Queue Sets\n", nqsets);
|
|
s->max_ethqsets = nqsets;
|
|
if (nqsets < s->ethqsets)
|
|
reduce_ethqs(adapter, nqsets);
|
|
}
|
|
for (i = 0; i < want; ++i)
|
|
adapter->msix_info[i].vec = entries[i].vector;
|
|
} else if (err > 0) {
|
|
pci_disable_msix(adapter->pdev);
|
|
dev_info(adapter->pdev_dev, "only %d MSI-X vectors left,"
|
|
" not using MSI-X\n", err);
|
|
}
|
|
return err;
|
|
}
|
|
|
|
#ifdef HAVE_NET_DEVICE_OPS
|
|
static const struct net_device_ops cxgb4vf_netdev_ops = {
|
|
.ndo_open = cxgb4vf_open,
|
|
.ndo_stop = cxgb4vf_stop,
|
|
.ndo_start_xmit = t4vf_eth_xmit,
|
|
.ndo_get_stats = cxgb4vf_get_stats,
|
|
.ndo_set_rx_mode = cxgb4vf_set_rxmode,
|
|
.ndo_set_mac_address = cxgb4vf_set_mac_addr,
|
|
.ndo_validate_addr = eth_validate_addr,
|
|
.ndo_do_ioctl = cxgb4vf_do_ioctl,
|
|
.ndo_change_mtu = cxgb4vf_change_mtu,
|
|
.ndo_vlan_rx_register = cxgb4vf_vlan_rx_register,
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
.ndo_poll_controller = cxgb4vf_poll_controller,
|
|
#endif
|
|
};
|
|
#endif
|
|
|
|
/*
|
|
* "Probe" a device: initialize a device and construct all kernel and driver
|
|
* state needed to manage the device. This routine is called "init_one" in
|
|
* the PF Driver ...
|
|
*/
|
|
static int __devinit cxgb4vf_pci_probe(struct pci_dev *pdev,
|
|
const struct pci_device_id *ent)
|
|
{
|
|
static int version_printed;
|
|
|
|
int pci_using_dac;
|
|
int err, pidx;
|
|
unsigned int pmask;
|
|
struct adapter *adapter;
|
|
struct port_info *pi;
|
|
struct net_device *netdev;
|
|
|
|
/*
|
|
* Print our driver banner the first time we're called to initialize a
|
|
* device.
|
|
*/
|
|
if (version_printed == 0) {
|
|
printk(KERN_INFO "%s - version %s\n", DRV_DESC, DRV_VERSION);
|
|
version_printed = 1;
|
|
}
|
|
|
|
/*
|
|
* Initialize generic PCI device state.
|
|
*/
|
|
err = pci_enable_device(pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "cannot enable PCI device\n");
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* Reserve PCI resources for the device. If we can't get them some
|
|
* other driver may have already claimed the device ...
|
|
*/
|
|
err = pci_request_regions(pdev, KBUILD_MODNAME);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "cannot obtain PCI resources\n");
|
|
goto err_disable_device;
|
|
}
|
|
|
|
/*
|
|
* Set up our DMA mask: try for 64-bit address masking first and
|
|
* fall back to 32-bit if we can't get 64 bits ...
|
|
*/
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(64));
|
|
if (err == 0) {
|
|
err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
|
|
if (err) {
|
|
dev_err(&pdev->dev, "unable to obtain 64-bit DMA for"
|
|
" coherent allocations\n");
|
|
goto err_release_regions;
|
|
}
|
|
pci_using_dac = 1;
|
|
} else {
|
|
err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
|
|
if (err != 0) {
|
|
dev_err(&pdev->dev, "no usable DMA configuration\n");
|
|
goto err_release_regions;
|
|
}
|
|
pci_using_dac = 0;
|
|
}
|
|
|
|
/*
|
|
* Enable bus mastering for the device ...
|
|
*/
|
|
pci_set_master(pdev);
|
|
|
|
/*
|
|
* Allocate our adapter data structure and attach it to the device.
|
|
*/
|
|
adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
|
|
if (!adapter) {
|
|
err = -ENOMEM;
|
|
goto err_release_regions;
|
|
}
|
|
pci_set_drvdata(pdev, adapter);
|
|
adapter->pdev = pdev;
|
|
adapter->pdev_dev = &pdev->dev;
|
|
|
|
/*
|
|
* Initialize SMP data synchronization resources.
|
|
*/
|
|
spin_lock_init(&adapter->stats_lock);
|
|
|
|
/*
|
|
* Map our I/O registers in BAR0.
|
|
*/
|
|
adapter->regs = pci_ioremap_bar(pdev, 0);
|
|
if (!adapter->regs) {
|
|
dev_err(&pdev->dev, "cannot map device registers\n");
|
|
err = -ENOMEM;
|
|
goto err_free_adapter;
|
|
}
|
|
|
|
/*
|
|
* Initialize adapter level features.
|
|
*/
|
|
adapter->name = pci_name(pdev);
|
|
adapter->msg_enable = dflt_msg_enable;
|
|
err = adap_init0(adapter);
|
|
if (err)
|
|
goto err_unmap_bar;
|
|
|
|
/*
|
|
* Allocate our "adapter ports" and stitch everything together.
|
|
*/
|
|
pmask = adapter->params.vfres.pmask;
|
|
for_each_port(adapter, pidx) {
|
|
int port_id, viid;
|
|
|
|
/*
|
|
* We simplistically allocate our virtual interfaces
|
|
* sequentially across the port numbers to which we have
|
|
* access rights. This should be configurable in some manner
|
|
* ...
|
|
*/
|
|
if (pmask == 0)
|
|
break;
|
|
port_id = ffs(pmask) - 1;
|
|
pmask &= ~(1 << port_id);
|
|
viid = t4vf_alloc_vi(adapter, port_id);
|
|
if (viid < 0) {
|
|
dev_err(&pdev->dev, "cannot allocate VI for port %d:"
|
|
" err=%d\n", port_id, viid);
|
|
err = viid;
|
|
goto err_free_dev;
|
|
}
|
|
|
|
/*
|
|
* Allocate our network device and stitch things together.
|
|
*/
|
|
netdev = alloc_etherdev_mq(sizeof(struct port_info),
|
|
MAX_PORT_QSETS);
|
|
if (netdev == NULL) {
|
|
dev_err(&pdev->dev, "cannot allocate netdev for"
|
|
" port %d\n", port_id);
|
|
t4vf_free_vi(adapter, viid);
|
|
err = -ENOMEM;
|
|
goto err_free_dev;
|
|
}
|
|
adapter->port[pidx] = netdev;
|
|
SET_NETDEV_DEV(netdev, &pdev->dev);
|
|
pi = netdev_priv(netdev);
|
|
pi->adapter = adapter;
|
|
pi->pidx = pidx;
|
|
pi->port_id = port_id;
|
|
pi->viid = viid;
|
|
|
|
/*
|
|
* Initialize the starting state of our "port" and register
|
|
* it.
|
|
*/
|
|
pi->xact_addr_filt = -1;
|
|
pi->rx_offload = RX_CSO;
|
|
netif_carrier_off(netdev);
|
|
netdev->irq = pdev->irq;
|
|
|
|
netdev->features = (NETIF_F_SG | TSO_FLAGS |
|
|
NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
|
|
NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX |
|
|
NETIF_F_GRO);
|
|
if (pci_using_dac)
|
|
netdev->features |= NETIF_F_HIGHDMA;
|
|
netdev->vlan_features =
|
|
(netdev->features &
|
|
~(NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX));
|
|
|
|
#ifdef HAVE_NET_DEVICE_OPS
|
|
netdev->netdev_ops = &cxgb4vf_netdev_ops;
|
|
#else
|
|
netdev->vlan_rx_register = cxgb4vf_vlan_rx_register;
|
|
netdev->open = cxgb4vf_open;
|
|
netdev->stop = cxgb4vf_stop;
|
|
netdev->hard_start_xmit = t4vf_eth_xmit;
|
|
netdev->get_stats = cxgb4vf_get_stats;
|
|
netdev->set_rx_mode = cxgb4vf_set_rxmode;
|
|
netdev->do_ioctl = cxgb4vf_do_ioctl;
|
|
netdev->change_mtu = cxgb4vf_change_mtu;
|
|
netdev->set_mac_address = cxgb4vf_set_mac_addr;
|
|
#ifdef CONFIG_NET_POLL_CONTROLLER
|
|
netdev->poll_controller = cxgb4vf_poll_controller;
|
|
#endif
|
|
#endif
|
|
SET_ETHTOOL_OPS(netdev, &cxgb4vf_ethtool_ops);
|
|
|
|
/*
|
|
* Initialize the hardware/software state for the port.
|
|
*/
|
|
err = t4vf_port_init(adapter, pidx);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "cannot initialize port %d\n",
|
|
pidx);
|
|
goto err_free_dev;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* The "card" is now ready to go. If any errors occur during device
|
|
* registration we do not fail the whole "card" but rather proceed
|
|
* only with the ports we manage to register successfully. However we
|
|
* must register at least one net device.
|
|
*/
|
|
for_each_port(adapter, pidx) {
|
|
netdev = adapter->port[pidx];
|
|
if (netdev == NULL)
|
|
continue;
|
|
|
|
err = register_netdev(netdev);
|
|
if (err) {
|
|
dev_warn(&pdev->dev, "cannot register net device %s,"
|
|
" skipping\n", netdev->name);
|
|
continue;
|
|
}
|
|
|
|
set_bit(pidx, &adapter->registered_device_map);
|
|
}
|
|
if (adapter->registered_device_map == 0) {
|
|
dev_err(&pdev->dev, "could not register any net devices\n");
|
|
goto err_free_dev;
|
|
}
|
|
|
|
/*
|
|
* Set up our debugfs entries.
|
|
*/
|
|
if (!IS_ERR_OR_NULL(cxgb4vf_debugfs_root)) {
|
|
adapter->debugfs_root =
|
|
debugfs_create_dir(pci_name(pdev),
|
|
cxgb4vf_debugfs_root);
|
|
if (IS_ERR_OR_NULL(adapter->debugfs_root))
|
|
dev_warn(&pdev->dev, "could not create debugfs"
|
|
" directory");
|
|
else
|
|
setup_debugfs(adapter);
|
|
}
|
|
|
|
/*
|
|
* See what interrupts we'll be using. If we've been configured to
|
|
* use MSI-X interrupts, try to enable them but fall back to using
|
|
* MSI interrupts if we can't enable MSI-X interrupts. If we can't
|
|
* get MSI interrupts we bail with the error.
|
|
*/
|
|
if (msi == MSI_MSIX && enable_msix(adapter) == 0)
|
|
adapter->flags |= USING_MSIX;
|
|
else {
|
|
err = pci_enable_msi(pdev);
|
|
if (err) {
|
|
dev_err(&pdev->dev, "Unable to allocate %s interrupts;"
|
|
" err=%d\n",
|
|
msi == MSI_MSIX ? "MSI-X or MSI" : "MSI", err);
|
|
goto err_free_debugfs;
|
|
}
|
|
adapter->flags |= USING_MSI;
|
|
}
|
|
|
|
/*
|
|
* Now that we know how many "ports" we have and what their types are,
|
|
* and how many Queue Sets we can support, we can configure our queue
|
|
* resources.
|
|
*/
|
|
cfg_queues(adapter);
|
|
|
|
/*
|
|
* Print a short notice on the existence and configuration of the new
|
|
* VF network device ...
|
|
*/
|
|
for_each_port(adapter, pidx) {
|
|
dev_info(adapter->pdev_dev, "%s: Chelsio VF NIC PCIe %s\n",
|
|
adapter->port[pidx]->name,
|
|
(adapter->flags & USING_MSIX) ? "MSI-X" :
|
|
(adapter->flags & USING_MSI) ? "MSI" : "");
|
|
}
|
|
|
|
/*
|
|
* Return success!
|
|
*/
|
|
return 0;
|
|
|
|
/*
|
|
* Error recovery and exit code. Unwind state that's been created
|
|
* so far and return the error.
|
|
*/
|
|
|
|
err_free_debugfs:
|
|
if (!IS_ERR_OR_NULL(adapter->debugfs_root)) {
|
|
cleanup_debugfs(adapter);
|
|
debugfs_remove_recursive(adapter->debugfs_root);
|
|
}
|
|
|
|
err_free_dev:
|
|
for_each_port(adapter, pidx) {
|
|
netdev = adapter->port[pidx];
|
|
if (netdev == NULL)
|
|
continue;
|
|
pi = netdev_priv(netdev);
|
|
t4vf_free_vi(adapter, pi->viid);
|
|
if (test_bit(pidx, &adapter->registered_device_map))
|
|
unregister_netdev(netdev);
|
|
free_netdev(netdev);
|
|
}
|
|
|
|
err_unmap_bar:
|
|
iounmap(adapter->regs);
|
|
|
|
err_free_adapter:
|
|
kfree(adapter);
|
|
pci_set_drvdata(pdev, NULL);
|
|
|
|
err_release_regions:
|
|
pci_release_regions(pdev);
|
|
pci_set_drvdata(pdev, NULL);
|
|
pci_clear_master(pdev);
|
|
|
|
err_disable_device:
|
|
pci_disable_device(pdev);
|
|
|
|
return err;
|
|
}
|
|
|
|
/*
|
|
* "Remove" a device: tear down all kernel and driver state created in the
|
|
* "probe" routine and quiesce the device (disable interrupts, etc.). (Note
|
|
* that this is called "remove_one" in the PF Driver.)
|
|
*/
|
|
static void __devexit cxgb4vf_pci_remove(struct pci_dev *pdev)
|
|
{
|
|
struct adapter *adapter = pci_get_drvdata(pdev);
|
|
|
|
/*
|
|
* Tear down driver state associated with device.
|
|
*/
|
|
if (adapter) {
|
|
int pidx;
|
|
|
|
/*
|
|
* Stop all of our activity. Unregister network port,
|
|
* disable interrupts, etc.
|
|
*/
|
|
for_each_port(adapter, pidx)
|
|
if (test_bit(pidx, &adapter->registered_device_map))
|
|
unregister_netdev(adapter->port[pidx]);
|
|
t4vf_sge_stop(adapter);
|
|
if (adapter->flags & USING_MSIX) {
|
|
pci_disable_msix(adapter->pdev);
|
|
adapter->flags &= ~USING_MSIX;
|
|
} else if (adapter->flags & USING_MSI) {
|
|
pci_disable_msi(adapter->pdev);
|
|
adapter->flags &= ~USING_MSI;
|
|
}
|
|
|
|
/*
|
|
* Tear down our debugfs entries.
|
|
*/
|
|
if (!IS_ERR_OR_NULL(adapter->debugfs_root)) {
|
|
cleanup_debugfs(adapter);
|
|
debugfs_remove_recursive(adapter->debugfs_root);
|
|
}
|
|
|
|
/*
|
|
* Free all of the various resources which we've acquired ...
|
|
*/
|
|
t4vf_free_sge_resources(adapter);
|
|
for_each_port(adapter, pidx) {
|
|
struct net_device *netdev = adapter->port[pidx];
|
|
struct port_info *pi;
|
|
|
|
if (netdev == NULL)
|
|
continue;
|
|
|
|
pi = netdev_priv(netdev);
|
|
t4vf_free_vi(adapter, pi->viid);
|
|
free_netdev(netdev);
|
|
}
|
|
iounmap(adapter->regs);
|
|
kfree(adapter);
|
|
pci_set_drvdata(pdev, NULL);
|
|
}
|
|
|
|
/*
|
|
* Disable the device and release its PCI resources.
|
|
*/
|
|
pci_disable_device(pdev);
|
|
pci_clear_master(pdev);
|
|
pci_release_regions(pdev);
|
|
}
|
|
|
|
/*
|
|
* "Shutdown" quiesce the device, stopping Ingress Packet and Interrupt
|
|
* delivery.
|
|
*/
|
|
static void __devexit cxgb4vf_pci_shutdown(struct pci_dev *pdev)
|
|
{
|
|
struct adapter *adapter;
|
|
int pidx;
|
|
|
|
adapter = pci_get_drvdata(pdev);
|
|
if (!adapter)
|
|
return;
|
|
|
|
/*
|
|
* Disable all Virtual Interfaces. This will shut down the
|
|
* delivery of all ingress packets into the chip for these
|
|
* Virtual Interfaces.
|
|
*/
|
|
for_each_port(adapter, pidx) {
|
|
struct net_device *netdev;
|
|
struct port_info *pi;
|
|
|
|
if (!test_bit(pidx, &adapter->registered_device_map))
|
|
continue;
|
|
|
|
netdev = adapter->port[pidx];
|
|
if (!netdev)
|
|
continue;
|
|
|
|
pi = netdev_priv(netdev);
|
|
t4vf_enable_vi(adapter, pi->viid, false, false);
|
|
}
|
|
|
|
/*
|
|
* Free up all Queues which will prevent further DMA and
|
|
* Interrupts allowing various internal pathways to drain.
|
|
*/
|
|
t4vf_free_sge_resources(adapter);
|
|
}
|
|
|
|
/*
|
|
* PCI Device registration data structures.
|
|
*/
|
|
#define CH_DEVICE(devid, idx) \
|
|
{ PCI_VENDOR_ID_CHELSIO, devid, PCI_ANY_ID, PCI_ANY_ID, 0, 0, idx }
|
|
|
|
static struct pci_device_id cxgb4vf_pci_tbl[] = {
|
|
CH_DEVICE(0xb000, 0), /* PE10K FPGA */
|
|
CH_DEVICE(0x4800, 0), /* T440-dbg */
|
|
CH_DEVICE(0x4801, 0), /* T420-cr */
|
|
CH_DEVICE(0x4802, 0), /* T422-cr */
|
|
CH_DEVICE(0x4803, 0), /* T440-cr */
|
|
CH_DEVICE(0x4804, 0), /* T420-bch */
|
|
CH_DEVICE(0x4805, 0), /* T440-bch */
|
|
CH_DEVICE(0x4806, 0), /* T460-ch */
|
|
CH_DEVICE(0x4807, 0), /* T420-so */
|
|
CH_DEVICE(0x4808, 0), /* T420-cx */
|
|
CH_DEVICE(0x4809, 0), /* T420-bt */
|
|
CH_DEVICE(0x480a, 0), /* T404-bt */
|
|
{ 0, }
|
|
};
|
|
|
|
MODULE_DESCRIPTION(DRV_DESC);
|
|
MODULE_AUTHOR("Chelsio Communications");
|
|
MODULE_LICENSE("Dual BSD/GPL");
|
|
MODULE_VERSION(DRV_VERSION);
|
|
MODULE_DEVICE_TABLE(pci, cxgb4vf_pci_tbl);
|
|
|
|
static struct pci_driver cxgb4vf_driver = {
|
|
.name = KBUILD_MODNAME,
|
|
.id_table = cxgb4vf_pci_tbl,
|
|
.probe = cxgb4vf_pci_probe,
|
|
.remove = __devexit_p(cxgb4vf_pci_remove),
|
|
.shutdown = __devexit_p(cxgb4vf_pci_shutdown),
|
|
};
|
|
|
|
/*
|
|
* Initialize global driver state.
|
|
*/
|
|
static int __init cxgb4vf_module_init(void)
|
|
{
|
|
int ret;
|
|
|
|
/*
|
|
* Vet our module parameters.
|
|
*/
|
|
if (msi != MSI_MSIX && msi != MSI_MSI) {
|
|
printk(KERN_WARNING KBUILD_MODNAME
|
|
": bad module parameter msi=%d; must be %d"
|
|
" (MSI-X or MSI) or %d (MSI)\n",
|
|
msi, MSI_MSIX, MSI_MSI);
|
|
return -EINVAL;
|
|
}
|
|
|
|
/* Debugfs support is optional, just warn if this fails */
|
|
cxgb4vf_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
|
|
if (IS_ERR_OR_NULL(cxgb4vf_debugfs_root))
|
|
printk(KERN_WARNING KBUILD_MODNAME ": could not create"
|
|
" debugfs entry, continuing\n");
|
|
|
|
ret = pci_register_driver(&cxgb4vf_driver);
|
|
if (ret < 0 && !IS_ERR_OR_NULL(cxgb4vf_debugfs_root))
|
|
debugfs_remove(cxgb4vf_debugfs_root);
|
|
return ret;
|
|
}
|
|
|
|
/*
|
|
* Tear down global driver state.
|
|
*/
|
|
static void __exit cxgb4vf_module_exit(void)
|
|
{
|
|
pci_unregister_driver(&cxgb4vf_driver);
|
|
debugfs_remove(cxgb4vf_debugfs_root);
|
|
}
|
|
|
|
module_init(cxgb4vf_module_init);
|
|
module_exit(cxgb4vf_module_exit);
|