1/* QLogic qede NIC Driver
   2 * Copyright (c) 2015-2017  QLogic Corporation
   3 *
   4 * This software is available to you under a choice of one of two
   5 * licenses.  You may choose to be licensed under the terms of the GNU
   6 * General Public License (GPL) Version 2, available from the file
   7 * COPYING in the main directory of this source tree, or the
   8 * OpenIB.org BSD license below:
   9 *
  10 *     Redistribution and use in source and binary forms, with or
  11 *     without modification, are permitted provided that the following
  12 *     conditions are met:
  13 *
  14 *      - Redistributions of source code must retain the above
  15 *        copyright notice, this list of conditions and the following
  16 *        disclaimer.
  17 *
  18 *      - Redistributions in binary form must reproduce the above
  19 *        copyright notice, this list of conditions and the following
  20 *        disclaimer in the documentation and /or other materials
  21 *        provided with the distribution.
  22 *
  23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
  27 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
  28 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  29 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  30 * SOFTWARE.
  31 */
  32#include <linux/module.h>
  33#include <linux/pci.h>
  34#include <linux/version.h>
  35#include <linux/device.h>
  36#include <linux/netdevice.h>
  37#include <linux/etherdevice.h>
  38#include <linux/skbuff.h>
  39#include <linux/errno.h>
  40#include <linux/list.h>
  41#include <linux/string.h>
  42#include <linux/dma-mapping.h>
  43#include <linux/interrupt.h>
  44#include <asm/byteorder.h>
  45#include <asm/param.h>
  46#include <linux/io.h>
  47#include <linux/netdev_features.h>
  48#include <linux/udp.h>
  49#include <linux/tcp.h>
  50#include <net/udp_tunnel.h>
  51#include <linux/ip.h>
  52#include <net/ipv6.h>
  53#include <net/tcp.h>
  54#include <linux/if_ether.h>
  55#include <linux/if_vlan.h>
  56#include <linux/pkt_sched.h>
  57#include <linux/ethtool.h>
  58#include <linux/in.h>
  59#include <linux/random.h>
  60#include <net/ip6_checksum.h>
  61#include <linux/bitops.h>
  62#include <linux/vmalloc.h>
  63#include "qede.h"
  64#include "qede_ptp.h"
  65
  66static char version[] =
  67	"QLogic FastLinQ 4xxxx Ethernet Driver qede " DRV_MODULE_VERSION "\n";
  68
  69MODULE_DESCRIPTION("QLogic FastLinQ 4xxxx Ethernet Driver");
  70MODULE_LICENSE("GPL");
  71MODULE_VERSION(DRV_MODULE_VERSION);
  72
  73static uint debug;
  74module_param(debug, uint, 0);
  75MODULE_PARM_DESC(debug, " Default debug msglevel");
  76
  77static const struct qed_eth_ops *qed_ops;
  78
  79#define CHIP_NUM_57980S_40		0x1634
  80#define CHIP_NUM_57980S_10		0x1666
  81#define CHIP_NUM_57980S_MF		0x1636
  82#define CHIP_NUM_57980S_100		0x1644
  83#define CHIP_NUM_57980S_50		0x1654
  84#define CHIP_NUM_57980S_25		0x1656
  85#define CHIP_NUM_57980S_IOV		0x1664
  86#define CHIP_NUM_AH			0x8070
  87#define CHIP_NUM_AH_IOV			0x8090
  88
  89#ifndef PCI_DEVICE_ID_NX2_57980E
  90#define PCI_DEVICE_ID_57980S_40		CHIP_NUM_57980S_40
  91#define PCI_DEVICE_ID_57980S_10		CHIP_NUM_57980S_10
  92#define PCI_DEVICE_ID_57980S_MF		CHIP_NUM_57980S_MF
  93#define PCI_DEVICE_ID_57980S_100	CHIP_NUM_57980S_100
  94#define PCI_DEVICE_ID_57980S_50		CHIP_NUM_57980S_50
  95#define PCI_DEVICE_ID_57980S_25		CHIP_NUM_57980S_25
  96#define PCI_DEVICE_ID_57980S_IOV	CHIP_NUM_57980S_IOV
  97#define PCI_DEVICE_ID_AH		CHIP_NUM_AH
  98#define PCI_DEVICE_ID_AH_IOV		CHIP_NUM_AH_IOV
  99
 100#endif
 101
 102enum qede_pci_private {
 103	QEDE_PRIVATE_PF,
 104	QEDE_PRIVATE_VF
 105};
 106
 107static const struct pci_device_id qede_pci_tbl[] = {
 108	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_40), QEDE_PRIVATE_PF},
 109	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_10), QEDE_PRIVATE_PF},
 110	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_MF), QEDE_PRIVATE_PF},
 111	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_100), QEDE_PRIVATE_PF},
 112	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_50), QEDE_PRIVATE_PF},
 113	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_25), QEDE_PRIVATE_PF},
 114#ifdef CONFIG_QED_SRIOV
 115	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_57980S_IOV), QEDE_PRIVATE_VF},
 116#endif
 117	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH), QEDE_PRIVATE_PF},
 118#ifdef CONFIG_QED_SRIOV
 119	{PCI_VDEVICE(QLOGIC, PCI_DEVICE_ID_AH_IOV), QEDE_PRIVATE_VF},
 120#endif
 121	{ 0 }
 122};
 123
 124MODULE_DEVICE_TABLE(pci, qede_pci_tbl);
 125
 126static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id);
 127
 128#define TX_TIMEOUT		(5 * HZ)
 129
 130/* Utilize last protocol index for XDP */
 131#define XDP_PI	11
 132
 133static void qede_remove(struct pci_dev *pdev);
 134static void qede_shutdown(struct pci_dev *pdev);
 135static void qede_link_update(void *dev, struct qed_link_output *link);
 136
 137/* The qede lock is used to protect driver state change and driver flows that
 138 * are not reentrant.
 139 */
 140void __qede_lock(struct qede_dev *edev)
 141{
 142	mutex_lock(&edev->qede_lock);
 143}
 144
 145void __qede_unlock(struct qede_dev *edev)
 146{
 147	mutex_unlock(&edev->qede_lock);
 148}
 149
 150#ifdef CONFIG_QED_SRIOV
 151static int qede_set_vf_vlan(struct net_device *ndev, int vf, u16 vlan, u8 qos,
 152			    __be16 vlan_proto)
 153{
 154	struct qede_dev *edev = netdev_priv(ndev);
 155
 156	if (vlan > 4095) {
 157		DP_NOTICE(edev, "Illegal vlan value %d\n", vlan);
 158		return -EINVAL;
 159	}
 160
 161	if (vlan_proto != htons(ETH_P_8021Q))
 162		return -EPROTONOSUPPORT;
 163
 164	DP_VERBOSE(edev, QED_MSG_IOV, "Setting Vlan 0x%04x to VF [%d]\n",
 165		   vlan, vf);
 166
 167	return edev->ops->iov->set_vlan(edev->cdev, vlan, vf);
 168}
 169
 170static int qede_set_vf_mac(struct net_device *ndev, int vfidx, u8 *mac)
 171{
 172	struct qede_dev *edev = netdev_priv(ndev);
 173
 174	DP_VERBOSE(edev, QED_MSG_IOV,
 175		   "Setting MAC %02x:%02x:%02x:%02x:%02x:%02x to VF [%d]\n",
 176		   mac[0], mac[1], mac[2], mac[3], mac[4], mac[5], vfidx);
 177
 178	if (!is_valid_ether_addr(mac)) {
 179		DP_VERBOSE(edev, QED_MSG_IOV, "MAC address isn't valid\n");
 180		return -EINVAL;
 181	}
 182
 183	return edev->ops->iov->set_mac(edev->cdev, mac, vfidx);
 184}
 185
 186static int qede_sriov_configure(struct pci_dev *pdev, int num_vfs_param)
 187{
 188	struct qede_dev *edev = netdev_priv(pci_get_drvdata(pdev));
 189	struct qed_dev_info *qed_info = &edev->dev_info.common;
 190	struct qed_update_vport_params *vport_params;
 191	int rc;
 192
 193	vport_params = vzalloc(sizeof(*vport_params));
 194	if (!vport_params)
 195		return -ENOMEM;
 196	DP_VERBOSE(edev, QED_MSG_IOV, "Requested %d VFs\n", num_vfs_param);
 197
 198	rc = edev->ops->iov->configure(edev->cdev, num_vfs_param);
 199
 200	/* Enable/Disable Tx switching for PF */
 201	if ((rc == num_vfs_param) && netif_running(edev->ndev) &&
 202	    qed_info->mf_mode != QED_MF_NPAR && qed_info->tx_switching) {
 203		vport_params->vport_id = 0;
 204		vport_params->update_tx_switching_flg = 1;
 205		vport_params->tx_switching_flg = num_vfs_param ? 1 : 0;
 206		edev->ops->vport_update(edev->cdev, vport_params);
 207	}
 208
 209	vfree(vport_params);
 210	return rc;
 211}
 212#endif
 213
 214static struct pci_driver qede_pci_driver = {
 215	.name = "qede",
 216	.id_table = qede_pci_tbl,
 217	.probe = qede_probe,
 218	.remove = qede_remove,
 219	.shutdown = qede_shutdown,
 220#ifdef CONFIG_QED_SRIOV
 221	.sriov_configure = qede_sriov_configure,
 222#endif
 223};
 224
 225static struct qed_eth_cb_ops qede_ll_ops = {
 226	{
 227#ifdef CONFIG_RFS_ACCEL
 228		.arfs_filter_op = qede_arfs_filter_op,
 229#endif
 230		.link_update = qede_link_update,
 
 
 
 231	},
 232	.force_mac = qede_force_mac,
 233	.ports_update = qede_udp_ports_update,
 234};
 235
 236static int qede_netdev_event(struct notifier_block *this, unsigned long event,
 237			     void *ptr)
 238{
 239	struct net_device *ndev = netdev_notifier_info_to_dev(ptr);
 240	struct ethtool_drvinfo drvinfo;
 241	struct qede_dev *edev;
 242
 243	if (event != NETDEV_CHANGENAME && event != NETDEV_CHANGEADDR)
 244		goto done;
 245
 246	/* Check whether this is a qede device */
 247	if (!ndev || !ndev->ethtool_ops || !ndev->ethtool_ops->get_drvinfo)
 248		goto done;
 249
 250	memset(&drvinfo, 0, sizeof(drvinfo));
 251	ndev->ethtool_ops->get_drvinfo(ndev, &drvinfo);
 252	if (strcmp(drvinfo.driver, "qede"))
 253		goto done;
 254	edev = netdev_priv(ndev);
 255
 256	switch (event) {
 257	case NETDEV_CHANGENAME:
 258		/* Notify qed of the name change */
 259		if (!edev->ops || !edev->ops->common)
 260			goto done;
 261		edev->ops->common->set_name(edev->cdev, edev->ndev->name);
 262		break;
 263	case NETDEV_CHANGEADDR:
 264		edev = netdev_priv(ndev);
 265		qede_rdma_event_changeaddr(edev);
 266		break;
 267	}
 268
 269done:
 270	return NOTIFY_DONE;
 271}
 272
 273static struct notifier_block qede_netdev_notifier = {
 274	.notifier_call = qede_netdev_event,
 275};
 276
 277static
 278int __init qede_init(void)
 279{
 280	int ret;
 281
 282	pr_info("qede_init: %s\n", version);
 283
 284	qed_ops = qed_get_eth_ops();
 285	if (!qed_ops) {
 286		pr_notice("Failed to get qed ethtool operations\n");
 287		return -EINVAL;
 288	}
 289
 290	/* Must register notifier before pci ops, since we might miss
 291	 * interface rename after pci probe and netdev registration.
 292	 */
 293	ret = register_netdevice_notifier(&qede_netdev_notifier);
 294	if (ret) {
 295		pr_notice("Failed to register netdevice_notifier\n");
 296		qed_put_eth_ops();
 297		return -EINVAL;
 298	}
 299
 300	ret = pci_register_driver(&qede_pci_driver);
 301	if (ret) {
 302		pr_notice("Failed to register driver\n");
 303		unregister_netdevice_notifier(&qede_netdev_notifier);
 304		qed_put_eth_ops();
 305		return -EINVAL;
 306	}
 307
 308	return 0;
 309}
 310
 311static void __exit qede_cleanup(void)
 312{
 313	if (debug & QED_LOG_INFO_MASK)
 314		pr_info("qede_cleanup called\n");
 315
 316	unregister_netdevice_notifier(&qede_netdev_notifier);
 317	pci_unregister_driver(&qede_pci_driver);
 318	qed_put_eth_ops();
 319}
 320
 321module_init(qede_init);
 322module_exit(qede_cleanup);
 323
 324static int qede_open(struct net_device *ndev);
 325static int qede_close(struct net_device *ndev);
 326
 327void qede_fill_by_demand_stats(struct qede_dev *edev)
 328{
 329	struct qede_stats_common *p_common = &edev->stats.common;
 330	struct qed_eth_stats stats;
 331
 332	edev->ops->get_vport_stats(edev->cdev, &stats);
 333
 334	p_common->no_buff_discards = stats.common.no_buff_discards;
 335	p_common->packet_too_big_discard = stats.common.packet_too_big_discard;
 336	p_common->ttl0_discard = stats.common.ttl0_discard;
 337	p_common->rx_ucast_bytes = stats.common.rx_ucast_bytes;
 338	p_common->rx_mcast_bytes = stats.common.rx_mcast_bytes;
 339	p_common->rx_bcast_bytes = stats.common.rx_bcast_bytes;
 340	p_common->rx_ucast_pkts = stats.common.rx_ucast_pkts;
 341	p_common->rx_mcast_pkts = stats.common.rx_mcast_pkts;
 342	p_common->rx_bcast_pkts = stats.common.rx_bcast_pkts;
 343	p_common->mftag_filter_discards = stats.common.mftag_filter_discards;
 344	p_common->mac_filter_discards = stats.common.mac_filter_discards;
 
 345
 346	p_common->tx_ucast_bytes = stats.common.tx_ucast_bytes;
 347	p_common->tx_mcast_bytes = stats.common.tx_mcast_bytes;
 348	p_common->tx_bcast_bytes = stats.common.tx_bcast_bytes;
 349	p_common->tx_ucast_pkts = stats.common.tx_ucast_pkts;
 350	p_common->tx_mcast_pkts = stats.common.tx_mcast_pkts;
 351	p_common->tx_bcast_pkts = stats.common.tx_bcast_pkts;
 352	p_common->tx_err_drop_pkts = stats.common.tx_err_drop_pkts;
 353	p_common->coalesced_pkts = stats.common.tpa_coalesced_pkts;
 354	p_common->coalesced_events = stats.common.tpa_coalesced_events;
 355	p_common->coalesced_aborts_num = stats.common.tpa_aborts_num;
 356	p_common->non_coalesced_pkts = stats.common.tpa_not_coalesced_pkts;
 357	p_common->coalesced_bytes = stats.common.tpa_coalesced_bytes;
 358
 359	p_common->rx_64_byte_packets = stats.common.rx_64_byte_packets;
 360	p_common->rx_65_to_127_byte_packets =
 361	    stats.common.rx_65_to_127_byte_packets;
 362	p_common->rx_128_to_255_byte_packets =
 363	    stats.common.rx_128_to_255_byte_packets;
 364	p_common->rx_256_to_511_byte_packets =
 365	    stats.common.rx_256_to_511_byte_packets;
 366	p_common->rx_512_to_1023_byte_packets =
 367	    stats.common.rx_512_to_1023_byte_packets;
 368	p_common->rx_1024_to_1518_byte_packets =
 369	    stats.common.rx_1024_to_1518_byte_packets;
 370	p_common->rx_crc_errors = stats.common.rx_crc_errors;
 371	p_common->rx_mac_crtl_frames = stats.common.rx_mac_crtl_frames;
 372	p_common->rx_pause_frames = stats.common.rx_pause_frames;
 373	p_common->rx_pfc_frames = stats.common.rx_pfc_frames;
 374	p_common->rx_align_errors = stats.common.rx_align_errors;
 375	p_common->rx_carrier_errors = stats.common.rx_carrier_errors;
 376	p_common->rx_oversize_packets = stats.common.rx_oversize_packets;
 377	p_common->rx_jabbers = stats.common.rx_jabbers;
 378	p_common->rx_undersize_packets = stats.common.rx_undersize_packets;
 379	p_common->rx_fragments = stats.common.rx_fragments;
 380	p_common->tx_64_byte_packets = stats.common.tx_64_byte_packets;
 381	p_common->tx_65_to_127_byte_packets =
 382	    stats.common.tx_65_to_127_byte_packets;
 383	p_common->tx_128_to_255_byte_packets =
 384	    stats.common.tx_128_to_255_byte_packets;
 385	p_common->tx_256_to_511_byte_packets =
 386	    stats.common.tx_256_to_511_byte_packets;
 387	p_common->tx_512_to_1023_byte_packets =
 388	    stats.common.tx_512_to_1023_byte_packets;
 389	p_common->tx_1024_to_1518_byte_packets =
 390	    stats.common.tx_1024_to_1518_byte_packets;
 391	p_common->tx_pause_frames = stats.common.tx_pause_frames;
 392	p_common->tx_pfc_frames = stats.common.tx_pfc_frames;
 393	p_common->brb_truncates = stats.common.brb_truncates;
 394	p_common->brb_discards = stats.common.brb_discards;
 395	p_common->tx_mac_ctrl_frames = stats.common.tx_mac_ctrl_frames;
 
 
 396
 397	if (QEDE_IS_BB(edev)) {
 398		struct qede_stats_bb *p_bb = &edev->stats.bb;
 399
 400		p_bb->rx_1519_to_1522_byte_packets =
 401		    stats.bb.rx_1519_to_1522_byte_packets;
 402		p_bb->rx_1519_to_2047_byte_packets =
 403		    stats.bb.rx_1519_to_2047_byte_packets;
 404		p_bb->rx_2048_to_4095_byte_packets =
 405		    stats.bb.rx_2048_to_4095_byte_packets;
 406		p_bb->rx_4096_to_9216_byte_packets =
 407		    stats.bb.rx_4096_to_9216_byte_packets;
 408		p_bb->rx_9217_to_16383_byte_packets =
 409		    stats.bb.rx_9217_to_16383_byte_packets;
 410		p_bb->tx_1519_to_2047_byte_packets =
 411		    stats.bb.tx_1519_to_2047_byte_packets;
 412		p_bb->tx_2048_to_4095_byte_packets =
 413		    stats.bb.tx_2048_to_4095_byte_packets;
 414		p_bb->tx_4096_to_9216_byte_packets =
 415		    stats.bb.tx_4096_to_9216_byte_packets;
 416		p_bb->tx_9217_to_16383_byte_packets =
 417		    stats.bb.tx_9217_to_16383_byte_packets;
 418		p_bb->tx_lpi_entry_count = stats.bb.tx_lpi_entry_count;
 419		p_bb->tx_total_collisions = stats.bb.tx_total_collisions;
 420	} else {
 421		struct qede_stats_ah *p_ah = &edev->stats.ah;
 422
 423		p_ah->rx_1519_to_max_byte_packets =
 424		    stats.ah.rx_1519_to_max_byte_packets;
 425		p_ah->tx_1519_to_max_byte_packets =
 426		    stats.ah.tx_1519_to_max_byte_packets;
 427	}
 428}
 429
 430static void qede_get_stats64(struct net_device *dev,
 431			     struct rtnl_link_stats64 *stats)
 432{
 433	struct qede_dev *edev = netdev_priv(dev);
 434	struct qede_stats_common *p_common;
 435
 436	qede_fill_by_demand_stats(edev);
 437	p_common = &edev->stats.common;
 438
 439	stats->rx_packets = p_common->rx_ucast_pkts + p_common->rx_mcast_pkts +
 440			    p_common->rx_bcast_pkts;
 441	stats->tx_packets = p_common->tx_ucast_pkts + p_common->tx_mcast_pkts +
 442			    p_common->tx_bcast_pkts;
 443
 444	stats->rx_bytes = p_common->rx_ucast_bytes + p_common->rx_mcast_bytes +
 445			  p_common->rx_bcast_bytes;
 446	stats->tx_bytes = p_common->tx_ucast_bytes + p_common->tx_mcast_bytes +
 447			  p_common->tx_bcast_bytes;
 448
 449	stats->tx_errors = p_common->tx_err_drop_pkts;
 450	stats->multicast = p_common->rx_mcast_pkts + p_common->rx_bcast_pkts;
 451
 452	stats->rx_fifo_errors = p_common->no_buff_discards;
 453
 454	if (QEDE_IS_BB(edev))
 455		stats->collisions = edev->stats.bb.tx_total_collisions;
 456	stats->rx_crc_errors = p_common->rx_crc_errors;
 457	stats->rx_frame_errors = p_common->rx_align_errors;
 458}
 459
 460#ifdef CONFIG_QED_SRIOV
 461static int qede_get_vf_config(struct net_device *dev, int vfidx,
 462			      struct ifla_vf_info *ivi)
 463{
 464	struct qede_dev *edev = netdev_priv(dev);
 465
 466	if (!edev->ops)
 467		return -EINVAL;
 468
 469	return edev->ops->iov->get_config(edev->cdev, vfidx, ivi);
 470}
 471
 472static int qede_set_vf_rate(struct net_device *dev, int vfidx,
 473			    int min_tx_rate, int max_tx_rate)
 474{
 475	struct qede_dev *edev = netdev_priv(dev);
 476
 477	return edev->ops->iov->set_rate(edev->cdev, vfidx, min_tx_rate,
 478					max_tx_rate);
 479}
 480
 481static int qede_set_vf_spoofchk(struct net_device *dev, int vfidx, bool val)
 482{
 483	struct qede_dev *edev = netdev_priv(dev);
 484
 485	if (!edev->ops)
 486		return -EINVAL;
 487
 488	return edev->ops->iov->set_spoof(edev->cdev, vfidx, val);
 489}
 490
 491static int qede_set_vf_link_state(struct net_device *dev, int vfidx,
 492				  int link_state)
 493{
 494	struct qede_dev *edev = netdev_priv(dev);
 495
 496	if (!edev->ops)
 497		return -EINVAL;
 498
 499	return edev->ops->iov->set_link_state(edev->cdev, vfidx, link_state);
 500}
 501
 502static int qede_set_vf_trust(struct net_device *dev, int vfidx, bool setting)
 503{
 504	struct qede_dev *edev = netdev_priv(dev);
 505
 506	if (!edev->ops)
 507		return -EINVAL;
 508
 509	return edev->ops->iov->set_trust(edev->cdev, vfidx, setting);
 510}
 511#endif
 512
 513static int qede_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
 514{
 515	struct qede_dev *edev = netdev_priv(dev);
 516
 517	if (!netif_running(dev))
 518		return -EAGAIN;
 519
 520	switch (cmd) {
 521	case SIOCSHWTSTAMP:
 522		return qede_ptp_hw_ts(edev, ifr);
 523	default:
 524		DP_VERBOSE(edev, QED_MSG_DEBUG,
 525			   "default IOCTL cmd 0x%x\n", cmd);
 526		return -EOPNOTSUPP;
 527	}
 528
 529	return 0;
 530}
 531
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 532static const struct net_device_ops qede_netdev_ops = {
 533	.ndo_open = qede_open,
 534	.ndo_stop = qede_close,
 535	.ndo_start_xmit = qede_start_xmit,
 
 536	.ndo_set_rx_mode = qede_set_rx_mode,
 537	.ndo_set_mac_address = qede_set_mac_addr,
 538	.ndo_validate_addr = eth_validate_addr,
 539	.ndo_change_mtu = qede_change_mtu,
 540	.ndo_do_ioctl = qede_ioctl,
 541#ifdef CONFIG_QED_SRIOV
 542	.ndo_set_vf_mac = qede_set_vf_mac,
 543	.ndo_set_vf_vlan = qede_set_vf_vlan,
 544	.ndo_set_vf_trust = qede_set_vf_trust,
 545#endif
 546	.ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
 547	.ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
 548	.ndo_fix_features = qede_fix_features,
 549	.ndo_set_features = qede_set_features,
 550	.ndo_get_stats64 = qede_get_stats64,
 551#ifdef CONFIG_QED_SRIOV
 552	.ndo_set_vf_link_state = qede_set_vf_link_state,
 553	.ndo_set_vf_spoofchk = qede_set_vf_spoofchk,
 554	.ndo_get_vf_config = qede_get_vf_config,
 555	.ndo_set_vf_rate = qede_set_vf_rate,
 556#endif
 557	.ndo_udp_tunnel_add = qede_udp_tunnel_add,
 558	.ndo_udp_tunnel_del = qede_udp_tunnel_del,
 559	.ndo_features_check = qede_features_check,
 560	.ndo_bpf = qede_xdp,
 561#ifdef CONFIG_RFS_ACCEL
 562	.ndo_rx_flow_steer = qede_rx_flow_steer,
 563#endif
 
 564};
 565
 566static const struct net_device_ops qede_netdev_vf_ops = {
 567	.ndo_open = qede_open,
 568	.ndo_stop = qede_close,
 569	.ndo_start_xmit = qede_start_xmit,
 
 570	.ndo_set_rx_mode = qede_set_rx_mode,
 571	.ndo_set_mac_address = qede_set_mac_addr,
 572	.ndo_validate_addr = eth_validate_addr,
 573	.ndo_change_mtu = qede_change_mtu,
 574	.ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
 575	.ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
 576	.ndo_fix_features = qede_fix_features,
 577	.ndo_set_features = qede_set_features,
 578	.ndo_get_stats64 = qede_get_stats64,
 579	.ndo_udp_tunnel_add = qede_udp_tunnel_add,
 580	.ndo_udp_tunnel_del = qede_udp_tunnel_del,
 581	.ndo_features_check = qede_features_check,
 582};
 583
 584static const struct net_device_ops qede_netdev_vf_xdp_ops = {
 585	.ndo_open = qede_open,
 586	.ndo_stop = qede_close,
 587	.ndo_start_xmit = qede_start_xmit,
 
 588	.ndo_set_rx_mode = qede_set_rx_mode,
 589	.ndo_set_mac_address = qede_set_mac_addr,
 590	.ndo_validate_addr = eth_validate_addr,
 591	.ndo_change_mtu = qede_change_mtu,
 592	.ndo_vlan_rx_add_vid = qede_vlan_rx_add_vid,
 593	.ndo_vlan_rx_kill_vid = qede_vlan_rx_kill_vid,
 594	.ndo_fix_features = qede_fix_features,
 595	.ndo_set_features = qede_set_features,
 596	.ndo_get_stats64 = qede_get_stats64,
 597	.ndo_udp_tunnel_add = qede_udp_tunnel_add,
 598	.ndo_udp_tunnel_del = qede_udp_tunnel_del,
 599	.ndo_features_check = qede_features_check,
 600	.ndo_bpf = qede_xdp,
 601};
 602
 603/* -------------------------------------------------------------------------
 604 * START OF PROBE / REMOVE
 605 * -------------------------------------------------------------------------
 606 */
 607
 608static struct qede_dev *qede_alloc_etherdev(struct qed_dev *cdev,
 609					    struct pci_dev *pdev,
 610					    struct qed_dev_eth_info *info,
 611					    u32 dp_module, u8 dp_level)
 612{
 613	struct net_device *ndev;
 614	struct qede_dev *edev;
 615
 616	ndev = alloc_etherdev_mqs(sizeof(*edev),
 617				  info->num_queues, info->num_queues);
 
 618	if (!ndev) {
 619		pr_err("etherdev allocation failed\n");
 620		return NULL;
 621	}
 622
 623	edev = netdev_priv(ndev);
 624	edev->ndev = ndev;
 625	edev->cdev = cdev;
 626	edev->pdev = pdev;
 627	edev->dp_module = dp_module;
 628	edev->dp_level = dp_level;
 629	edev->ops = qed_ops;
 630	edev->q_num_rx_buffers = NUM_RX_BDS_DEF;
 631	edev->q_num_tx_buffers = NUM_TX_BDS_DEF;
 632
 633	DP_INFO(edev, "Allocated netdev with %d tx queues and %d rx queues\n",
 634		info->num_queues, info->num_queues);
 635
 636	SET_NETDEV_DEV(ndev, &pdev->dev);
 637
 638	memset(&edev->stats, 0, sizeof(edev->stats));
 639	memcpy(&edev->dev_info, info, sizeof(*info));
 640
 641	/* As ethtool doesn't have the ability to show WoL behavior as
 642	 * 'default', if device supports it declare it's enabled.
 643	 */
 644	if (edev->dev_info.common.wol_support)
 645		edev->wol_enabled = true;
 646
 647	INIT_LIST_HEAD(&edev->vlan_list);
 648
 649	return edev;
 650}
 651
 652static void qede_init_ndev(struct qede_dev *edev)
 653{
 654	struct net_device *ndev = edev->ndev;
 655	struct pci_dev *pdev = edev->pdev;
 656	bool udp_tunnel_enable = false;
 657	netdev_features_t hw_features;
 658
 659	pci_set_drvdata(pdev, ndev);
 660
 661	ndev->mem_start = edev->dev_info.common.pci_mem_start;
 662	ndev->base_addr = ndev->mem_start;
 663	ndev->mem_end = edev->dev_info.common.pci_mem_end;
 664	ndev->irq = edev->dev_info.common.pci_irq;
 665
 666	ndev->watchdog_timeo = TX_TIMEOUT;
 667
 668	if (IS_VF(edev)) {
 669		if (edev->dev_info.xdp_supported)
 670			ndev->netdev_ops = &qede_netdev_vf_xdp_ops;
 671		else
 672			ndev->netdev_ops = &qede_netdev_vf_ops;
 673	} else {
 674		ndev->netdev_ops = &qede_netdev_ops;
 675	}
 676
 677	qede_set_ethtool_ops(ndev);
 678
 679	ndev->priv_flags |= IFF_UNICAST_FLT;
 680
 681	/* user-changeble features */
 682	hw_features = NETIF_F_GRO | NETIF_F_GRO_HW | NETIF_F_SG |
 683		      NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 684		      NETIF_F_TSO | NETIF_F_TSO6;
 685
 686	if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1)
 687		hw_features |= NETIF_F_NTUPLE;
 688
 689	if (edev->dev_info.common.vxlan_enable ||
 690	    edev->dev_info.common.geneve_enable)
 691		udp_tunnel_enable = true;
 692
 693	if (udp_tunnel_enable || edev->dev_info.common.gre_enable) {
 694		hw_features |= NETIF_F_TSO_ECN;
 695		ndev->hw_enc_features = NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
 696					NETIF_F_SG | NETIF_F_TSO |
 697					NETIF_F_TSO_ECN | NETIF_F_TSO6 |
 698					NETIF_F_RXCSUM;
 699	}
 700
 701	if (udp_tunnel_enable) {
 702		hw_features |= (NETIF_F_GSO_UDP_TUNNEL |
 703				NETIF_F_GSO_UDP_TUNNEL_CSUM);
 704		ndev->hw_enc_features |= (NETIF_F_GSO_UDP_TUNNEL |
 705					  NETIF_F_GSO_UDP_TUNNEL_CSUM);
 706	}
 707
 708	if (edev->dev_info.common.gre_enable) {
 709		hw_features |= (NETIF_F_GSO_GRE | NETIF_F_GSO_GRE_CSUM);
 710		ndev->hw_enc_features |= (NETIF_F_GSO_GRE |
 711					  NETIF_F_GSO_GRE_CSUM);
 712	}
 713
 714	ndev->vlan_features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 715			      NETIF_F_HIGHDMA;
 716	ndev->features = hw_features | NETIF_F_RXHASH | NETIF_F_RXCSUM |
 717			 NETIF_F_HW_VLAN_CTAG_RX | NETIF_F_HIGHDMA |
 718			 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_HW_VLAN_CTAG_TX;
 719
 720	ndev->hw_features = hw_features;
 721
 722	/* MTU range: 46 - 9600 */
 723	ndev->min_mtu = ETH_ZLEN - ETH_HLEN;
 724	ndev->max_mtu = QEDE_MAX_JUMBO_PACKET_SIZE;
 725
 726	/* Set network device HW mac */
 727	ether_addr_copy(edev->ndev->dev_addr, edev->dev_info.common.hw_mac);
 728
 729	ndev->mtu = edev->dev_info.common.mtu;
 730}
 731
 732/* This function converts from 32b param to two params of level and module
 733 * Input 32b decoding:
 734 * b31 - enable all NOTICE prints. NOTICE prints are for deviation from the
 735 * 'happy' flow, e.g. memory allocation failed.
 736 * b30 - enable all INFO prints. INFO prints are for major steps in the flow
 737 * and provide important parameters.
 738 * b29-b0 - per-module bitmap, where each bit enables VERBOSE prints of that
 739 * module. VERBOSE prints are for tracking the specific flow in low level.
 740 *
 741 * Notice that the level should be that of the lowest required logs.
 742 */
 743void qede_config_debug(uint debug, u32 *p_dp_module, u8 *p_dp_level)
 744{
 745	*p_dp_level = QED_LEVEL_NOTICE;
 746	*p_dp_module = 0;
 747
 748	if (debug & QED_LOG_VERBOSE_MASK) {
 749		*p_dp_level = QED_LEVEL_VERBOSE;
 750		*p_dp_module = (debug & 0x3FFFFFFF);
 751	} else if (debug & QED_LOG_INFO_MASK) {
 752		*p_dp_level = QED_LEVEL_INFO;
 753	} else if (debug & QED_LOG_NOTICE_MASK) {
 754		*p_dp_level = QED_LEVEL_NOTICE;
 755	}
 756}
 757
 758static void qede_free_fp_array(struct qede_dev *edev)
 759{
 760	if (edev->fp_array) {
 761		struct qede_fastpath *fp;
 762		int i;
 763
 764		for_each_queue(i) {
 765			fp = &edev->fp_array[i];
 766
 767			kfree(fp->sb_info);
 768			/* Handle mem alloc failure case where qede_init_fp
 769			 * didn't register xdp_rxq_info yet.
 770			 * Implicit only (fp->type & QEDE_FASTPATH_RX)
 771			 */
 772			if (fp->rxq && xdp_rxq_info_is_reg(&fp->rxq->xdp_rxq))
 773				xdp_rxq_info_unreg(&fp->rxq->xdp_rxq);
 774			kfree(fp->rxq);
 775			kfree(fp->xdp_tx);
 776			kfree(fp->txq);
 777		}
 778		kfree(edev->fp_array);
 779	}
 780
 781	edev->num_queues = 0;
 782	edev->fp_num_tx = 0;
 783	edev->fp_num_rx = 0;
 784}
 785
 786static int qede_alloc_fp_array(struct qede_dev *edev)
 787{
 788	u8 fp_combined, fp_rx = edev->fp_num_rx;
 789	struct qede_fastpath *fp;
 790	int i;
 791
 792	edev->fp_array = kcalloc(QEDE_QUEUE_CNT(edev),
 793				 sizeof(*edev->fp_array), GFP_KERNEL);
 794	if (!edev->fp_array) {
 795		DP_NOTICE(edev, "fp array allocation failed\n");
 796		goto err;
 797	}
 798
 799	fp_combined = QEDE_QUEUE_CNT(edev) - fp_rx - edev->fp_num_tx;
 800
 801	/* Allocate the FP elements for Rx queues followed by combined and then
 802	 * the Tx. This ordering should be maintained so that the respective
 803	 * queues (Rx or Tx) will be together in the fastpath array and the
 804	 * associated ids will be sequential.
 805	 */
 806	for_each_queue(i) {
 807		fp = &edev->fp_array[i];
 808
 809		fp->sb_info = kzalloc(sizeof(*fp->sb_info), GFP_KERNEL);
 810		if (!fp->sb_info) {
 811			DP_NOTICE(edev, "sb info struct allocation failed\n");
 812			goto err;
 813		}
 814
 815		if (fp_rx) {
 816			fp->type = QEDE_FASTPATH_RX;
 817			fp_rx--;
 818		} else if (fp_combined) {
 819			fp->type = QEDE_FASTPATH_COMBINED;
 820			fp_combined--;
 821		} else {
 822			fp->type = QEDE_FASTPATH_TX;
 823		}
 824
 825		if (fp->type & QEDE_FASTPATH_TX) {
 826			fp->txq = kzalloc(sizeof(*fp->txq), GFP_KERNEL);
 
 827			if (!fp->txq)
 828				goto err;
 829		}
 830
 831		if (fp->type & QEDE_FASTPATH_RX) {
 832			fp->rxq = kzalloc(sizeof(*fp->rxq), GFP_KERNEL);
 833			if (!fp->rxq)
 834				goto err;
 835
 836			if (edev->xdp_prog) {
 837				fp->xdp_tx = kzalloc(sizeof(*fp->xdp_tx),
 838						     GFP_KERNEL);
 839				if (!fp->xdp_tx)
 840					goto err;
 841				fp->type |= QEDE_FASTPATH_XDP;
 842			}
 843		}
 844	}
 845
 846	return 0;
 847err:
 848	qede_free_fp_array(edev);
 849	return -ENOMEM;
 850}
 851
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 852static void qede_sp_task(struct work_struct *work)
 853{
 854	struct qede_dev *edev = container_of(work, struct qede_dev,
 855					     sp_task.work);
 856
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 857	__qede_lock(edev);
 858
 859	if (test_and_clear_bit(QEDE_SP_RX_MODE, &edev->sp_flags))
 860		if (edev->state == QEDE_STATE_OPEN)
 861			qede_config_rx_mode(edev->ndev);
 862
 863#ifdef CONFIG_RFS_ACCEL
 864	if (test_and_clear_bit(QEDE_SP_ARFS_CONFIG, &edev->sp_flags)) {
 865		if (edev->state == QEDE_STATE_OPEN)
 866			qede_process_arfs_filters(edev, false);
 867	}
 868#endif
 869	__qede_unlock(edev);
 870}
 871
 872static void qede_update_pf_params(struct qed_dev *cdev)
 873{
 874	struct qed_pf_params pf_params;
 
 875
 876	/* 64 rx + 64 tx + 64 XDP */
 877	memset(&pf_params, 0, sizeof(struct qed_pf_params));
 878	pf_params.eth_pf_params.num_cons = (MAX_SB_PER_PF_MIMD - 1) * 3;
 
 
 
 
 879
 880	/* Same for VFs - make sure they'll have sufficient connections
 881	 * to support XDP Tx queues.
 882	 */
 883	pf_params.eth_pf_params.num_vf_cons = 48;
 884
 885	pf_params.eth_pf_params.num_arfs_filters = QEDE_RFS_MAX_FLTR;
 886	qed_ops->common->update_pf_params(cdev, &pf_params);
 887}
 888
 889#define QEDE_FW_VER_STR_SIZE	80
 890
 891static void qede_log_probe(struct qede_dev *edev)
 892{
 893	struct qed_dev_info *p_dev_info = &edev->dev_info.common;
 894	u8 buf[QEDE_FW_VER_STR_SIZE];
 895	size_t left_size;
 896
 897	snprintf(buf, QEDE_FW_VER_STR_SIZE,
 898		 "Storm FW %d.%d.%d.%d, Management FW %d.%d.%d.%d",
 899		 p_dev_info->fw_major, p_dev_info->fw_minor, p_dev_info->fw_rev,
 900		 p_dev_info->fw_eng,
 901		 (p_dev_info->mfw_rev & QED_MFW_VERSION_3_MASK) >>
 902		 QED_MFW_VERSION_3_OFFSET,
 903		 (p_dev_info->mfw_rev & QED_MFW_VERSION_2_MASK) >>
 904		 QED_MFW_VERSION_2_OFFSET,
 905		 (p_dev_info->mfw_rev & QED_MFW_VERSION_1_MASK) >>
 906		 QED_MFW_VERSION_1_OFFSET,
 907		 (p_dev_info->mfw_rev & QED_MFW_VERSION_0_MASK) >>
 908		 QED_MFW_VERSION_0_OFFSET);
 909
 910	left_size = QEDE_FW_VER_STR_SIZE - strlen(buf);
 911	if (p_dev_info->mbi_version && left_size)
 912		snprintf(buf + strlen(buf), left_size,
 913			 " [MBI %d.%d.%d]",
 914			 (p_dev_info->mbi_version & QED_MBI_VERSION_2_MASK) >>
 915			 QED_MBI_VERSION_2_OFFSET,
 916			 (p_dev_info->mbi_version & QED_MBI_VERSION_1_MASK) >>
 917			 QED_MBI_VERSION_1_OFFSET,
 918			 (p_dev_info->mbi_version & QED_MBI_VERSION_0_MASK) >>
 919			 QED_MBI_VERSION_0_OFFSET);
 920
 921	pr_info("qede %02x:%02x.%02x: %s [%s]\n", edev->pdev->bus->number,
 922		PCI_SLOT(edev->pdev->devfn), PCI_FUNC(edev->pdev->devfn),
 923		buf, edev->ndev->name);
 924}
 925
 926enum qede_probe_mode {
 927	QEDE_PROBE_NORMAL,
 
 928};
 929
 930static int __qede_probe(struct pci_dev *pdev, u32 dp_module, u8 dp_level,
 931			bool is_vf, enum qede_probe_mode mode)
 932{
 933	struct qed_probe_params probe_params;
 934	struct qed_slowpath_params sp_params;
 935	struct qed_dev_eth_info dev_info;
 936	struct qede_dev *edev;
 937	struct qed_dev *cdev;
 938	int rc;
 939
 940	if (unlikely(dp_level & QED_LEVEL_INFO))
 941		pr_notice("Starting qede probe\n");
 942
 943	memset(&probe_params, 0, sizeof(probe_params));
 944	probe_params.protocol = QED_PROTOCOL_ETH;
 945	probe_params.dp_module = dp_module;
 946	probe_params.dp_level = dp_level;
 947	probe_params.is_vf = is_vf;
 
 948	cdev = qed_ops->common->probe(pdev, &probe_params);
 949	if (!cdev) {
 950		rc = -ENODEV;
 951		goto err0;
 952	}
 953
 954	qede_update_pf_params(cdev);
 955
 956	/* Start the Slowpath-process */
 957	memset(&sp_params, 0, sizeof(sp_params));
 958	sp_params.int_mode = QED_INT_MODE_MSIX;
 959	sp_params.drv_major = QEDE_MAJOR_VERSION;
 960	sp_params.drv_minor = QEDE_MINOR_VERSION;
 961	sp_params.drv_rev = QEDE_REVISION_VERSION;
 962	sp_params.drv_eng = QEDE_ENGINEERING_VERSION;
 963	strlcpy(sp_params.name, "qede LAN", QED_DRV_VER_STR_SIZE);
 964	rc = qed_ops->common->slowpath_start(cdev, &sp_params);
 965	if (rc) {
 966		pr_notice("Cannot start slowpath\n");
 967		goto err1;
 968	}
 969
 970	/* Learn information crucial for qede to progress */
 971	rc = qed_ops->fill_dev_info(cdev, &dev_info);
 972	if (rc)
 973		goto err2;
 974
 975	edev = qede_alloc_etherdev(cdev, pdev, &dev_info, dp_module,
 976				   dp_level);
 977	if (!edev) {
 978		rc = -ENOMEM;
 979		goto err2;
 
 
 
 
 
 
 
 
 
 980	}
 981
 982	if (is_vf)
 983		edev->flags |= QEDE_FLAG_IS_VF;
 984
 985	qede_init_ndev(edev);
 986
 987	rc = qede_rdma_dev_add(edev);
 988	if (rc)
 989		goto err3;
 990
 991	/* Prepare the lock prior to the registration of the netdev,
 992	 * as once it's registered we might reach flows requiring it
 993	 * [it's even possible to reach a flow needing it directly
 994	 * from there, although it's unlikely].
 995	 */
 996	INIT_DELAYED_WORK(&edev->sp_task, qede_sp_task);
 997	mutex_init(&edev->qede_lock);
 998	rc = register_netdev(edev->ndev);
 999	if (rc) {
1000		DP_NOTICE(edev, "Cannot register net-device\n");
1001		goto err4;
 
 
 
1002	}
1003
1004	edev->ops->common->set_name(cdev, edev->ndev->name);
1005
1006	/* PTP not supported on VFs */
1007	if (!is_vf)
1008		qede_ptp_enable(edev, true);
1009
1010	edev->ops->register_ops(cdev, &qede_ll_ops, edev);
1011
1012#ifdef CONFIG_DCB
1013	if (!IS_VF(edev))
1014		qede_set_dcbnl_ops(edev->ndev);
1015#endif
1016
1017	edev->rx_copybreak = QEDE_RX_HDR_SIZE;
1018
1019	qede_log_probe(edev);
1020	return 0;
1021
1022err4:
1023	qede_rdma_dev_remove(edev);
1024err3:
1025	free_netdev(edev->ndev);
1026err2:
1027	qed_ops->common->slowpath_stop(cdev);
1028err1:
1029	qed_ops->common->remove(cdev);
1030err0:
1031	return rc;
1032}
1033
1034static int qede_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1035{
1036	bool is_vf = false;
1037	u32 dp_module = 0;
1038	u8 dp_level = 0;
1039
1040	switch ((enum qede_pci_private)id->driver_data) {
1041	case QEDE_PRIVATE_VF:
1042		if (debug & QED_LOG_VERBOSE_MASK)
1043			dev_err(&pdev->dev, "Probing a VF\n");
1044		is_vf = true;
1045		break;
1046	default:
1047		if (debug & QED_LOG_VERBOSE_MASK)
1048			dev_err(&pdev->dev, "Probing a PF\n");
1049	}
1050
1051	qede_config_debug(debug, &dp_module, &dp_level);
1052
1053	return __qede_probe(pdev, dp_module, dp_level, is_vf,
1054			    QEDE_PROBE_NORMAL);
1055}
1056
1057enum qede_remove_mode {
1058	QEDE_REMOVE_NORMAL,
 
1059};
1060
1061static void __qede_remove(struct pci_dev *pdev, enum qede_remove_mode mode)
1062{
1063	struct net_device *ndev = pci_get_drvdata(pdev);
1064	struct qede_dev *edev = netdev_priv(ndev);
1065	struct qed_dev *cdev = edev->cdev;
 
 
 
 
 
 
 
 
1066
1067	DP_INFO(edev, "Starting qede_remove\n");
1068
1069	qede_rdma_dev_remove(edev);
1070	unregister_netdev(ndev);
1071	cancel_delayed_work_sync(&edev->sp_task);
1072
1073	qede_ptp_disable(edev);
 
1074
1075	edev->ops->common->set_power_state(cdev, PCI_D0);
1076
1077	pci_set_drvdata(pdev, NULL);
 
 
 
 
 
1078
1079	/* Use global ops since we've freed edev */
1080	qed_ops->common->slowpath_stop(cdev);
1081	if (system_state == SYSTEM_POWER_OFF)
1082		return;
1083	qed_ops->common->remove(cdev);
1084
1085	/* Since this can happen out-of-sync with other flows,
1086	 * don't release the netdevice until after slowpath stop
1087	 * has been called to guarantee various other contexts
1088	 * [e.g., QED register callbacks] won't break anything when
1089	 * accessing the netdevice.
1090	 */
1091	 free_netdev(ndev);
 
1092
1093	dev_info(&pdev->dev, "Ending qede_remove successfully\n");
1094}
1095
1096static void qede_remove(struct pci_dev *pdev)
1097{
1098	__qede_remove(pdev, QEDE_REMOVE_NORMAL);
1099}
1100
1101static void qede_shutdown(struct pci_dev *pdev)
1102{
1103	__qede_remove(pdev, QEDE_REMOVE_NORMAL);
1104}
1105
1106/* -------------------------------------------------------------------------
1107 * START OF LOAD / UNLOAD
1108 * -------------------------------------------------------------------------
1109 */
1110
1111static int qede_set_num_queues(struct qede_dev *edev)
1112{
1113	int rc;
1114	u16 rss_num;
1115
1116	/* Setup queues according to possible resources*/
1117	if (edev->req_queues)
1118		rss_num = edev->req_queues;
1119	else
1120		rss_num = netif_get_num_default_rss_queues() *
1121			  edev->dev_info.common.num_hwfns;
1122
1123	rss_num = min_t(u16, QEDE_MAX_RSS_CNT(edev), rss_num);
1124
1125	rc = edev->ops->common->set_fp_int(edev->cdev, rss_num);
1126	if (rc > 0) {
1127		/* Managed to request interrupts for our queues */
1128		edev->num_queues = rc;
1129		DP_INFO(edev, "Managed %d [of %d] RSS queues\n",
1130			QEDE_QUEUE_CNT(edev), rss_num);
1131		rc = 0;
1132	}
1133
1134	edev->fp_num_tx = edev->req_num_tx;
1135	edev->fp_num_rx = edev->req_num_rx;
1136
1137	return rc;
1138}
1139
1140static void qede_free_mem_sb(struct qede_dev *edev, struct qed_sb_info *sb_info,
1141			     u16 sb_id)
1142{
1143	if (sb_info->sb_virt) {
1144		edev->ops->common->sb_release(edev->cdev, sb_info, sb_id);
 
1145		dma_free_coherent(&edev->pdev->dev, sizeof(*sb_info->sb_virt),
1146				  (void *)sb_info->sb_virt, sb_info->sb_phys);
1147		memset(sb_info, 0, sizeof(*sb_info));
1148	}
1149}
1150
1151/* This function allocates fast-path status block memory */
1152static int qede_alloc_mem_sb(struct qede_dev *edev,
1153			     struct qed_sb_info *sb_info, u16 sb_id)
1154{
1155	struct status_block_e4 *sb_virt;
1156	dma_addr_t sb_phys;
1157	int rc;
1158
1159	sb_virt = dma_alloc_coherent(&edev->pdev->dev,
1160				     sizeof(*sb_virt), &sb_phys, GFP_KERNEL);
1161	if (!sb_virt) {
1162		DP_ERR(edev, "Status block allocation failed\n");
1163		return -ENOMEM;
1164	}
1165
1166	rc = edev->ops->common->sb_init(edev->cdev, sb_info,
1167					sb_virt, sb_phys, sb_id,
1168					QED_SB_TYPE_L2_QUEUE);
1169	if (rc) {
1170		DP_ERR(edev, "Status block initialization failed\n");
1171		dma_free_coherent(&edev->pdev->dev, sizeof(*sb_virt),
1172				  sb_virt, sb_phys);
1173		return rc;
1174	}
1175
1176	return 0;
1177}
1178
1179static void qede_free_rx_buffers(struct qede_dev *edev,
1180				 struct qede_rx_queue *rxq)
1181{
1182	u16 i;
1183
1184	for (i = rxq->sw_rx_cons; i != rxq->sw_rx_prod; i++) {
1185		struct sw_rx_data *rx_buf;
1186		struct page *data;
1187
1188		rx_buf = &rxq->sw_rx_ring[i & NUM_RX_BDS_MAX];
1189		data = rx_buf->data;
1190
1191		dma_unmap_page(&edev->pdev->dev,
1192			       rx_buf->mapping, PAGE_SIZE, rxq->data_direction);
1193
1194		rx_buf->data = NULL;
1195		__free_page(data);
1196	}
1197}
1198
1199static void qede_free_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq)
1200{
1201	int i;
1202
1203	if (edev->gro_disable)
1204		return;
1205
1206	for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
1207		struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
1208		struct sw_rx_data *replace_buf = &tpa_info->buffer;
1209
1210		if (replace_buf->data) {
1211			dma_unmap_page(&edev->pdev->dev,
1212				       replace_buf->mapping,
1213				       PAGE_SIZE, DMA_FROM_DEVICE);
1214			__free_page(replace_buf->data);
1215		}
1216	}
1217}
1218
1219static void qede_free_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1220{
1221	qede_free_sge_mem(edev, rxq);
1222
1223	/* Free rx buffers */
1224	qede_free_rx_buffers(edev, rxq);
1225
1226	/* Free the parallel SW ring */
1227	kfree(rxq->sw_rx_ring);
1228
1229	/* Free the real RQ ring used by FW */
1230	edev->ops->common->chain_free(edev->cdev, &rxq->rx_bd_ring);
1231	edev->ops->common->chain_free(edev->cdev, &rxq->rx_comp_ring);
1232}
1233
1234static int qede_alloc_sge_mem(struct qede_dev *edev, struct qede_rx_queue *rxq)
1235{
1236	dma_addr_t mapping;
1237	int i;
1238
1239	if (edev->gro_disable)
1240		return 0;
1241
1242	for (i = 0; i < ETH_TPA_MAX_AGGS_NUM; i++) {
1243		struct qede_agg_info *tpa_info = &rxq->tpa_info[i];
1244		struct sw_rx_data *replace_buf = &tpa_info->buffer;
1245
1246		replace_buf->data = alloc_pages(GFP_ATOMIC, 0);
1247		if (unlikely(!replace_buf->data)) {
1248			DP_NOTICE(edev,
1249				  "Failed to allocate TPA skb pool [replacement buffer]\n");
1250			goto err;
1251		}
1252
1253		mapping = dma_map_page(&edev->pdev->dev, replace_buf->data, 0,
1254				       PAGE_SIZE, DMA_FROM_DEVICE);
1255		if (unlikely(dma_mapping_error(&edev->pdev->dev, mapping))) {
1256			DP_NOTICE(edev,
1257				  "Failed to map TPA replacement buffer\n");
1258			goto err;
1259		}
1260
1261		replace_buf->mapping = mapping;
1262		tpa_info->buffer.page_offset = 0;
1263		tpa_info->buffer_mapping = mapping;
1264		tpa_info->state = QEDE_AGG_STATE_NONE;
1265	}
1266
1267	return 0;
1268err:
1269	qede_free_sge_mem(edev, rxq);
1270	edev->gro_disable = 1;
1271	edev->ndev->features &= ~NETIF_F_GRO_HW;
1272	return -ENOMEM;
1273}
1274
1275/* This function allocates all memory needed per Rx queue */
1276static int qede_alloc_mem_rxq(struct qede_dev *edev, struct qede_rx_queue *rxq)
1277{
1278	int i, rc, size;
1279
1280	rxq->num_rx_buffers = edev->q_num_rx_buffers;
1281
1282	rxq->rx_buf_size = NET_IP_ALIGN + ETH_OVERHEAD + edev->ndev->mtu;
1283	rxq->rx_headroom = edev->xdp_prog ? XDP_PACKET_HEADROOM : 0;
 
 
 
1284
1285	/* Make sure that the headroom and  payload fit in a single page */
1286	if (rxq->rx_buf_size + rxq->rx_headroom > PAGE_SIZE)
1287		rxq->rx_buf_size = PAGE_SIZE - rxq->rx_headroom;
1288
1289	/* Segment size to spilt a page in multiple equal parts,
1290	 * unless XDP is used in which case we'd use the entire page.
1291	 */
1292	if (!edev->xdp_prog)
1293		rxq->rx_buf_seg_size = roundup_pow_of_two(rxq->rx_buf_size);
1294	else
 
1295		rxq->rx_buf_seg_size = PAGE_SIZE;
 
1296
1297	/* Allocate the parallel driver ring for Rx buffers */
1298	size = sizeof(*rxq->sw_rx_ring) * RX_RING_SIZE;
1299	rxq->sw_rx_ring = kzalloc(size, GFP_KERNEL);
1300	if (!rxq->sw_rx_ring) {
1301		DP_ERR(edev, "Rx buffers ring allocation failed\n");
1302		rc = -ENOMEM;
1303		goto err;
1304	}
1305
1306	/* Allocate FW Rx ring  */
1307	rc = edev->ops->common->chain_alloc(edev->cdev,
1308					    QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1309					    QED_CHAIN_MODE_NEXT_PTR,
1310					    QED_CHAIN_CNT_TYPE_U16,
1311					    RX_RING_SIZE,
1312					    sizeof(struct eth_rx_bd),
1313					    &rxq->rx_bd_ring, NULL);
1314	if (rc)
1315		goto err;
1316
1317	/* Allocate FW completion ring */
1318	rc = edev->ops->common->chain_alloc(edev->cdev,
1319					    QED_CHAIN_USE_TO_CONSUME,
1320					    QED_CHAIN_MODE_PBL,
1321					    QED_CHAIN_CNT_TYPE_U16,
1322					    RX_RING_SIZE,
1323					    sizeof(union eth_rx_cqe),
1324					    &rxq->rx_comp_ring, NULL);
1325	if (rc)
1326		goto err;
1327
1328	/* Allocate buffers for the Rx ring */
1329	rxq->filled_buffers = 0;
1330	for (i = 0; i < rxq->num_rx_buffers; i++) {
1331		rc = qede_alloc_rx_buffer(rxq, false);
1332		if (rc) {
1333			DP_ERR(edev,
1334			       "Rx buffers allocation failed at index %d\n", i);
1335			goto err;
1336		}
1337	}
1338
1339	rc = qede_alloc_sge_mem(edev, rxq);
 
1340err:
1341	return rc;
1342}
1343
1344static void qede_free_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1345{
1346	/* Free the parallel SW ring */
1347	if (txq->is_xdp)
1348		kfree(txq->sw_tx_ring.xdp);
1349	else
1350		kfree(txq->sw_tx_ring.skbs);
1351
1352	/* Free the real RQ ring used by FW */
1353	edev->ops->common->chain_free(edev->cdev, &txq->tx_pbl);
1354}
1355
1356/* This function allocates all memory needed per Tx queue */
1357static int qede_alloc_mem_txq(struct qede_dev *edev, struct qede_tx_queue *txq)
1358{
1359	union eth_tx_bd_types *p_virt;
1360	int size, rc;
1361
1362	txq->num_tx_buffers = edev->q_num_tx_buffers;
1363
1364	/* Allocate the parallel driver ring for Tx buffers */
1365	if (txq->is_xdp) {
1366		size = sizeof(*txq->sw_tx_ring.xdp) * txq->num_tx_buffers;
1367		txq->sw_tx_ring.xdp = kzalloc(size, GFP_KERNEL);
1368		if (!txq->sw_tx_ring.xdp)
1369			goto err;
1370	} else {
1371		size = sizeof(*txq->sw_tx_ring.skbs) * txq->num_tx_buffers;
1372		txq->sw_tx_ring.skbs = kzalloc(size, GFP_KERNEL);
1373		if (!txq->sw_tx_ring.skbs)
1374			goto err;
1375	}
1376
1377	rc = edev->ops->common->chain_alloc(edev->cdev,
1378					    QED_CHAIN_USE_TO_CONSUME_PRODUCE,
1379					    QED_CHAIN_MODE_PBL,
1380					    QED_CHAIN_CNT_TYPE_U16,
1381					    txq->num_tx_buffers,
1382					    sizeof(*p_virt),
1383					    &txq->tx_pbl, NULL);
1384	if (rc)
1385		goto err;
1386
1387	return 0;
1388
1389err:
1390	qede_free_mem_txq(edev, txq);
1391	return -ENOMEM;
1392}
1393
1394/* This function frees all memory of a single fp */
1395static void qede_free_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1396{
1397	qede_free_mem_sb(edev, fp->sb_info, fp->id);
1398
1399	if (fp->type & QEDE_FASTPATH_RX)
1400		qede_free_mem_rxq(edev, fp->rxq);
1401
1402	if (fp->type & QEDE_FASTPATH_XDP)
1403		qede_free_mem_txq(edev, fp->xdp_tx);
1404
1405	if (fp->type & QEDE_FASTPATH_TX)
1406		qede_free_mem_txq(edev, fp->txq);
 
 
 
 
1407}
1408
1409/* This function allocates all memory needed for a single fp (i.e. an entity
1410 * which contains status block, one rx queue and/or multiple per-TC tx queues.
1411 */
1412static int qede_alloc_mem_fp(struct qede_dev *edev, struct qede_fastpath *fp)
1413{
1414	int rc = 0;
1415
1416	rc = qede_alloc_mem_sb(edev, fp->sb_info, fp->id);
1417	if (rc)
1418		goto out;
1419
1420	if (fp->type & QEDE_FASTPATH_RX) {
1421		rc = qede_alloc_mem_rxq(edev, fp->rxq);
1422		if (rc)
1423			goto out;
1424	}
1425
1426	if (fp->type & QEDE_FASTPATH_XDP) {
1427		rc = qede_alloc_mem_txq(edev, fp->xdp_tx);
1428		if (rc)
1429			goto out;
1430	}
1431
1432	if (fp->type & QEDE_FASTPATH_TX) {
1433		rc = qede_alloc_mem_txq(edev, fp->txq);
1434		if (rc)
1435			goto out;
 
 
 
 
1436	}
1437
1438out:
1439	return rc;
1440}
1441
1442static void qede_free_mem_load(struct qede_dev *edev)
1443{
1444	int i;
1445
1446	for_each_queue(i) {
1447		struct qede_fastpath *fp = &edev->fp_array[i];
1448
1449		qede_free_mem_fp(edev, fp);
1450	}
1451}
1452
1453/* This function allocates all qede memory at NIC load. */
1454static int qede_alloc_mem_load(struct qede_dev *edev)
1455{
1456	int rc = 0, queue_id;
1457
1458	for (queue_id = 0; queue_id < QEDE_QUEUE_CNT(edev); queue_id++) {
1459		struct qede_fastpath *fp = &edev->fp_array[queue_id];
1460
1461		rc = qede_alloc_mem_fp(edev, fp);
1462		if (rc) {
1463			DP_ERR(edev,
1464			       "Failed to allocate memory for fastpath - rss id = %d\n",
1465			       queue_id);
1466			qede_free_mem_load(edev);
1467			return rc;
1468		}
1469	}
1470
1471	return 0;
1472}
1473
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
1474/* This function inits fp content and resets the SB, RXQ and TXQ structures */
1475static void qede_init_fp(struct qede_dev *edev)
1476{
1477	int queue_id, rxq_index = 0, txq_index = 0;
1478	struct qede_fastpath *fp;
1479
1480	for_each_queue(queue_id) {
1481		fp = &edev->fp_array[queue_id];
1482
1483		fp->edev = edev;
1484		fp->id = queue_id;
1485
1486		if (fp->type & QEDE_FASTPATH_XDP) {
1487			fp->xdp_tx->index = QEDE_TXQ_IDX_TO_XDP(edev,
1488								rxq_index);
1489			fp->xdp_tx->is_xdp = 1;
1490		}
1491
1492		if (fp->type & QEDE_FASTPATH_RX) {
1493			fp->rxq->rxq_id = rxq_index++;
1494
1495			/* Determine how to map buffers for this queue */
1496			if (fp->type & QEDE_FASTPATH_XDP)
1497				fp->rxq->data_direction = DMA_BIDIRECTIONAL;
1498			else
1499				fp->rxq->data_direction = DMA_FROM_DEVICE;
1500			fp->rxq->dev = &edev->pdev->dev;
1501
1502			/* Driver have no error path from here */
1503			WARN_ON(xdp_rxq_info_reg(&fp->rxq->xdp_rxq, edev->ndev,
1504						 fp->rxq->rxq_id) < 0);
1505		}
1506
1507		if (fp->type & QEDE_FASTPATH_TX) {
1508			fp->txq->index = txq_index++;
1509			if (edev->dev_info.is_legacy)
1510				fp->txq->is_legacy = 1;
1511			fp->txq->dev = &edev->pdev->dev;
 
 
 
 
 
 
 
 
 
 
 
 
 
1512		}
1513
1514		snprintf(fp->name, sizeof(fp->name), "%s-fp-%d",
1515			 edev->ndev->name, queue_id);
1516	}
1517
1518	edev->gro_disable = !(edev->ndev->features & NETIF_F_GRO_HW);
1519}
1520
1521static int qede_set_real_num_queues(struct qede_dev *edev)
1522{
1523	int rc = 0;
1524
1525	rc = netif_set_real_num_tx_queues(edev->ndev, QEDE_TSS_COUNT(edev));
 
 
1526	if (rc) {
1527		DP_NOTICE(edev, "Failed to set real number of Tx queues\n");
1528		return rc;
1529	}
1530
1531	rc = netif_set_real_num_rx_queues(edev->ndev, QEDE_RSS_COUNT(edev));
1532	if (rc) {
1533		DP_NOTICE(edev, "Failed to set real number of Rx queues\n");
1534		return rc;
1535	}
1536
1537	return 0;
1538}
1539
1540static void qede_napi_disable_remove(struct qede_dev *edev)
1541{
1542	int i;
1543
1544	for_each_queue(i) {
1545		napi_disable(&edev->fp_array[i].napi);
1546
1547		netif_napi_del(&edev->fp_array[i].napi);
1548	}
1549}
1550
1551static void qede_napi_add_enable(struct qede_dev *edev)
1552{
1553	int i;
1554
1555	/* Add NAPI objects */
1556	for_each_queue(i) {
1557		netif_napi_add(edev->ndev, &edev->fp_array[i].napi,
1558			       qede_poll, NAPI_POLL_WEIGHT);
1559		napi_enable(&edev->fp_array[i].napi);
1560	}
1561}
1562
1563static void qede_sync_free_irqs(struct qede_dev *edev)
1564{
1565	int i;
1566
1567	for (i = 0; i < edev->int_info.used_cnt; i++) {
1568		if (edev->int_info.msix_cnt) {
1569			synchronize_irq(edev->int_info.msix[i].vector);
1570			free_irq(edev->int_info.msix[i].vector,
1571				 &edev->fp_array[i]);
1572		} else {
1573			edev->ops->common->simd_handler_clean(edev->cdev, i);
1574		}
1575	}
1576
1577	edev->int_info.used_cnt = 0;
1578}
1579
1580static int qede_req_msix_irqs(struct qede_dev *edev)
1581{
1582	int i, rc;
1583
1584	/* Sanitize number of interrupts == number of prepared RSS queues */
1585	if (QEDE_QUEUE_CNT(edev) > edev->int_info.msix_cnt) {
1586		DP_ERR(edev,
1587		       "Interrupt mismatch: %d RSS queues > %d MSI-x vectors\n",
1588		       QEDE_QUEUE_CNT(edev), edev->int_info.msix_cnt);
1589		return -EINVAL;
1590	}
1591
1592	for (i = 0; i < QEDE_QUEUE_CNT(edev); i++) {
1593#ifdef CONFIG_RFS_ACCEL
1594		struct qede_fastpath *fp = &edev->fp_array[i];
1595
1596		if (edev->ndev->rx_cpu_rmap && (fp->type & QEDE_FASTPATH_RX)) {
1597			rc = irq_cpu_rmap_add(edev->ndev->rx_cpu_rmap,
1598					      edev->int_info.msix[i].vector);
1599			if (rc) {
1600				DP_ERR(edev, "Failed to add CPU rmap\n");
1601				qede_free_arfs(edev);
1602			}
1603		}
1604#endif
1605		rc = request_irq(edev->int_info.msix[i].vector,
1606				 qede_msix_fp_int, 0, edev->fp_array[i].name,
1607				 &edev->fp_array[i]);
1608		if (rc) {
1609			DP_ERR(edev, "Request fp %d irq failed\n", i);
1610			qede_sync_free_irqs(edev);
1611			return rc;
1612		}
1613		DP_VERBOSE(edev, NETIF_MSG_INTR,
1614			   "Requested fp irq for %s [entry %d]. Cookie is at %p\n",
1615			   edev->fp_array[i].name, i,
1616			   &edev->fp_array[i]);
1617		edev->int_info.used_cnt++;
1618	}
1619
1620	return 0;
1621}
1622
1623static void qede_simd_fp_handler(void *cookie)
1624{
1625	struct qede_fastpath *fp = (struct qede_fastpath *)cookie;
1626
1627	napi_schedule_irqoff(&fp->napi);
1628}
1629
1630static int qede_setup_irqs(struct qede_dev *edev)
1631{
1632	int i, rc = 0;
1633
1634	/* Learn Interrupt configuration */
1635	rc = edev->ops->common->get_fp_int(edev->cdev, &edev->int_info);
1636	if (rc)
1637		return rc;
1638
1639	if (edev->int_info.msix_cnt) {
1640		rc = qede_req_msix_irqs(edev);
1641		if (rc)
1642			return rc;
1643		edev->ndev->irq = edev->int_info.msix[0].vector;
1644	} else {
1645		const struct qed_common_ops *ops;
1646
1647		/* qed should learn receive the RSS ids and callbacks */
1648		ops = edev->ops->common;
1649		for (i = 0; i < QEDE_QUEUE_CNT(edev); i++)
1650			ops->simd_handler_config(edev->cdev,
1651						 &edev->fp_array[i], i,
1652						 qede_simd_fp_handler);
1653		edev->int_info.used_cnt = QEDE_QUEUE_CNT(edev);
1654	}
1655	return 0;
1656}
1657
1658static int qede_drain_txq(struct qede_dev *edev,
1659			  struct qede_tx_queue *txq, bool allow_drain)
1660{
1661	int rc, cnt = 1000;
1662
1663	while (txq->sw_tx_cons != txq->sw_tx_prod) {
1664		if (!cnt) {
1665			if (allow_drain) {
1666				DP_NOTICE(edev,
1667					  "Tx queue[%d] is stuck, requesting MCP to drain\n",
1668					  txq->index);
1669				rc = edev->ops->common->drain(edev->cdev);
1670				if (rc)
1671					return rc;
1672				return qede_drain_txq(edev, txq, false);
1673			}
1674			DP_NOTICE(edev,
1675				  "Timeout waiting for tx queue[%d]: PROD=%d, CONS=%d\n",
1676				  txq->index, txq->sw_tx_prod,
1677				  txq->sw_tx_cons);
1678			return -ENODEV;
1679		}
1680		cnt--;
1681		usleep_range(1000, 2000);
1682		barrier();
1683	}
1684
1685	/* FW finished processing, wait for HW to transmit all tx packets */
1686	usleep_range(1000, 2000);
1687
1688	return 0;
1689}
1690
1691static int qede_stop_txq(struct qede_dev *edev,
1692			 struct qede_tx_queue *txq, int rss_id)
1693{
 
 
 
 
1694	return edev->ops->q_tx_stop(edev->cdev, rss_id, txq->handle);
1695}
1696
1697static int qede_stop_queues(struct qede_dev *edev)
1698{
1699	struct qed_update_vport_params *vport_update_params;
1700	struct qed_dev *cdev = edev->cdev;
1701	struct qede_fastpath *fp;
1702	int rc, i;
1703
1704	/* Disable the vport */
1705	vport_update_params = vzalloc(sizeof(*vport_update_params));
1706	if (!vport_update_params)
1707		return -ENOMEM;
1708
1709	vport_update_params->vport_id = 0;
1710	vport_update_params->update_vport_active_flg = 1;
1711	vport_update_params->vport_active_flg = 0;
1712	vport_update_params->update_rss_flg = 0;
1713
1714	rc = edev->ops->vport_update(cdev, vport_update_params);
1715	vfree(vport_update_params);
1716
1717	if (rc) {
1718		DP_ERR(edev, "Failed to update vport\n");
1719		return rc;
1720	}
1721
1722	/* Flush Tx queues. If needed, request drain from MCP */
1723	for_each_queue(i) {
1724		fp = &edev->fp_array[i];
1725
1726		if (fp->type & QEDE_FASTPATH_TX) {
1727			rc = qede_drain_txq(edev, fp->txq, true);
1728			if (rc)
1729				return rc;
 
 
 
 
1730		}
1731
1732		if (fp->type & QEDE_FASTPATH_XDP) {
1733			rc = qede_drain_txq(edev, fp->xdp_tx, true);
1734			if (rc)
1735				return rc;
1736		}
1737	}
1738
1739	/* Stop all Queues in reverse order */
1740	for (i = QEDE_QUEUE_CNT(edev) - 1; i >= 0; i--) {
1741		fp = &edev->fp_array[i];
1742
1743		/* Stop the Tx Queue(s) */
1744		if (fp->type & QEDE_FASTPATH_TX) {
1745			rc = qede_stop_txq(edev, fp->txq, i);
1746			if (rc)
1747				return rc;
 
 
 
 
1748		}
1749
1750		/* Stop the Rx Queue */
1751		if (fp->type & QEDE_FASTPATH_RX) {
1752			rc = edev->ops->q_rx_stop(cdev, i, fp->rxq->handle);
1753			if (rc) {
1754				DP_ERR(edev, "Failed to stop RXQ #%d\n", i);
1755				return rc;
1756			}
1757		}
1758
1759		/* Stop the XDP forwarding queue */
1760		if (fp->type & QEDE_FASTPATH_XDP) {
1761			rc = qede_stop_txq(edev, fp->xdp_tx, i);
1762			if (rc)
1763				return rc;
1764
1765			bpf_prog_put(fp->rxq->xdp_prog);
1766		}
1767	}
1768
1769	/* Stop the vport */
1770	rc = edev->ops->vport_stop(cdev, 0);
1771	if (rc)
1772		DP_ERR(edev, "Failed to stop VPORT\n");
1773
1774	return rc;
1775}
1776
1777static int qede_start_txq(struct qede_dev *edev,
1778			  struct qede_fastpath *fp,
1779			  struct qede_tx_queue *txq, u8 rss_id, u16 sb_idx)
1780{
1781	dma_addr_t phys_table = qed_chain_get_pbl_phys(&txq->tx_pbl);
1782	u32 page_cnt = qed_chain_get_page_cnt(&txq->tx_pbl);
1783	struct qed_queue_start_common_params params;
1784	struct qed_txq_start_ret_params ret_params;
1785	int rc;
1786
1787	memset(&params, 0, sizeof(params));
1788	memset(&ret_params, 0, sizeof(ret_params));
1789
1790	/* Let the XDP queue share the queue-zone with one of the regular txq.
1791	 * We don't really care about its coalescing.
1792	 */
1793	if (txq->is_xdp)
1794		params.queue_id = QEDE_TXQ_XDP_TO_IDX(edev, txq);
1795	else
1796		params.queue_id = txq->index;
1797
1798	params.p_sb = fp->sb_info;
1799	params.sb_idx = sb_idx;
 
1800
1801	rc = edev->ops->q_tx_start(edev->cdev, rss_id, &params, phys_table,
1802				   page_cnt, &ret_params);
1803	if (rc) {
1804		DP_ERR(edev, "Start TXQ #%d failed %d\n", txq->index, rc);
1805		return rc;
1806	}
1807
1808	txq->doorbell_addr = ret_params.p_doorbell;
1809	txq->handle = ret_params.p_handle;
1810
1811	/* Determine the FW consumer address associated */
1812	txq->hw_cons_ptr = &fp->sb_info->sb_virt->pi_array[sb_idx];
1813
1814	/* Prepare the doorbell parameters */
1815	SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_DEST, DB_DEST_XCM);
1816	SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_CMD, DB_AGG_CMD_SET);
1817	SET_FIELD(txq->tx_db.data.params, ETH_DB_DATA_AGG_VAL_SEL,
1818		  DQ_XCM_ETH_TX_BD_PROD_CMD);
1819	txq->tx_db.data.agg_flags = DQ_XCM_ETH_DQ_CF_CMD;
1820
 
 
 
 
 
1821	return rc;
1822}
1823
1824static int qede_start_queues(struct qede_dev *edev, bool clear_stats)
1825{
1826	int vlan_removal_en = 1;
1827	struct qed_dev *cdev = edev->cdev;
1828	struct qed_dev_info *qed_info = &edev->dev_info.common;
1829	struct qed_update_vport_params *vport_update_params;
1830	struct qed_queue_start_common_params q_params;
1831	struct qed_start_vport_params start = {0};
1832	int rc, i;
1833
1834	if (!edev->num_queues) {
1835		DP_ERR(edev,
1836		       "Cannot update V-VPORT as active as there are no Rx queues\n");
1837		return -EINVAL;
1838	}
1839
1840	vport_update_params = vzalloc(sizeof(*vport_update_params));
1841	if (!vport_update_params)
1842		return -ENOMEM;
1843
1844	start.handle_ptp_pkts = !!(edev->ptp);
1845	start.gro_enable = !edev->gro_disable;
1846	start.mtu = edev->ndev->mtu;
1847	start.vport_id = 0;
1848	start.drop_ttl0 = true;
1849	start.remove_inner_vlan = vlan_removal_en;
1850	start.clear_stats = clear_stats;
1851
1852	rc = edev->ops->vport_start(cdev, &start);
1853
1854	if (rc) {
1855		DP_ERR(edev, "Start V-PORT failed %d\n", rc);
1856		goto out;
1857	}
1858
1859	DP_VERBOSE(edev, NETIF_MSG_IFUP,
1860		   "Start vport ramrod passed, vport_id = %d, MTU = %d, vlan_removal_en = %d\n",
1861		   start.vport_id, edev->ndev->mtu + 0xe, vlan_removal_en);
1862
1863	for_each_queue(i) {
1864		struct qede_fastpath *fp = &edev->fp_array[i];
1865		dma_addr_t p_phys_table;
1866		u32 page_cnt;
1867
1868		if (fp->type & QEDE_FASTPATH_RX) {
1869			struct qed_rxq_start_ret_params ret_params;
1870			struct qede_rx_queue *rxq = fp->rxq;
1871			__le16 *val;
1872
1873			memset(&ret_params, 0, sizeof(ret_params));
1874			memset(&q_params, 0, sizeof(q_params));
1875			q_params.queue_id = rxq->rxq_id;
1876			q_params.vport_id = 0;
1877			q_params.p_sb = fp->sb_info;
1878			q_params.sb_idx = RX_PI;
1879
1880			p_phys_table =
1881			    qed_chain_get_pbl_phys(&rxq->rx_comp_ring);
1882			page_cnt = qed_chain_get_page_cnt(&rxq->rx_comp_ring);
1883
1884			rc = edev->ops->q_rx_start(cdev, i, &q_params,
1885						   rxq->rx_buf_size,
1886						   rxq->rx_bd_ring.p_phys_addr,
1887						   p_phys_table,
1888						   page_cnt, &ret_params);
1889			if (rc) {
1890				DP_ERR(edev, "Start RXQ #%d failed %d\n", i,
1891				       rc);
1892				goto out;
1893			}
1894
1895			/* Use the return parameters */
1896			rxq->hw_rxq_prod_addr = ret_params.p_prod;
1897			rxq->handle = ret_params.p_handle;
1898
1899			val = &fp->sb_info->sb_virt->pi_array[RX_PI];
1900			rxq->hw_cons_ptr = val;
1901
1902			qede_update_rx_prod(edev, rxq);
1903		}
1904
1905		if (fp->type & QEDE_FASTPATH_XDP) {
1906			rc = qede_start_txq(edev, fp, fp->xdp_tx, i, XDP_PI);
1907			if (rc)
1908				goto out;
1909
1910			fp->rxq->xdp_prog = bpf_prog_add(edev->xdp_prog, 1);
1911			if (IS_ERR(fp->rxq->xdp_prog)) {
1912				rc = PTR_ERR(fp->rxq->xdp_prog);
1913				fp->rxq->xdp_prog = NULL;
1914				goto out;
1915			}
1916		}
1917
1918		if (fp->type & QEDE_FASTPATH_TX) {
1919			rc = qede_start_txq(edev, fp, fp->txq, i, TX_PI(0));
1920			if (rc)
1921				goto out;
 
 
 
 
 
1922		}
1923	}
1924
1925	/* Prepare and send the vport enable */
1926	vport_update_params->vport_id = start.vport_id;
1927	vport_update_params->update_vport_active_flg = 1;
1928	vport_update_params->vport_active_flg = 1;
1929
1930	if ((qed_info->mf_mode == QED_MF_NPAR || pci_num_vf(edev->pdev)) &&
1931	    qed_info->tx_switching) {
1932		vport_update_params->update_tx_switching_flg = 1;
1933		vport_update_params->tx_switching_flg = 1;
1934	}
1935
1936	qede_fill_rss_params(edev, &vport_update_params->rss_params,
1937			     &vport_update_params->update_rss_flg);
1938
1939	rc = edev->ops->vport_update(cdev, vport_update_params);
1940	if (rc)
1941		DP_ERR(edev, "Update V-PORT failed %d\n", rc);
1942
1943out:
1944	vfree(vport_update_params);
1945	return rc;
1946}
1947
1948enum qede_unload_mode {
1949	QEDE_UNLOAD_NORMAL,
 
1950};
1951
1952static void qede_unload(struct qede_dev *edev, enum qede_unload_mode mode,
1953			bool is_locked)
1954{
1955	struct qed_link_params link_params;
1956	int rc;
1957
1958	DP_INFO(edev, "Starting qede unload\n");
1959
1960	if (!is_locked)
1961		__qede_lock(edev);
1962
1963	edev->state = QEDE_STATE_CLOSED;
 
 
 
1964
1965	qede_rdma_dev_event_close(edev);
1966
1967	/* Close OS Tx */
1968	netif_tx_disable(edev->ndev);
1969	netif_carrier_off(edev->ndev);
1970
1971	/* Reset the link */
1972	memset(&link_params, 0, sizeof(link_params));
1973	link_params.link_up = false;
1974	edev->ops->common->set_link(edev->cdev, &link_params);
1975	rc = qede_stop_queues(edev);
1976	if (rc) {
1977		qede_sync_free_irqs(edev);
1978		goto out;
1979	}
 
 
1980
1981	DP_INFO(edev, "Stopped Queues\n");
 
1982
1983	qede_vlan_mark_nonconfigured(edev);
1984	edev->ops->fastpath_stop(edev->cdev);
1985
1986	if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1) {
1987		qede_poll_for_freeing_arfs_filters(edev);
1988		qede_free_arfs(edev);
1989	}
1990
1991	/* Release the interrupts */
1992	qede_sync_free_irqs(edev);
1993	edev->ops->common->set_fp_int(edev->cdev, 0);
1994
1995	qede_napi_disable_remove(edev);
1996
 
 
 
1997	qede_free_mem_load(edev);
1998	qede_free_fp_array(edev);
1999
2000out:
2001	if (!is_locked)
2002		__qede_unlock(edev);
 
 
 
 
 
 
2003	DP_INFO(edev, "Ending qede unload\n");
2004}
2005
2006enum qede_load_mode {
2007	QEDE_LOAD_NORMAL,
2008	QEDE_LOAD_RELOAD,
 
2009};
2010
2011static int qede_load(struct qede_dev *edev, enum qede_load_mode mode,
2012		     bool is_locked)
2013{
2014	struct qed_link_params link_params;
 
2015	int rc;
2016
2017	DP_INFO(edev, "Starting qede load\n");
2018
2019	if (!is_locked)
2020		__qede_lock(edev);
2021
2022	rc = qede_set_num_queues(edev);
2023	if (rc)
2024		goto out;
2025
2026	rc = qede_alloc_fp_array(edev);
2027	if (rc)
2028		goto out;
2029
2030	qede_init_fp(edev);
2031
2032	rc = qede_alloc_mem_load(edev);
2033	if (rc)
2034		goto err1;
2035	DP_INFO(edev, "Allocated %d Rx, %d Tx queues\n",
2036		QEDE_RSS_COUNT(edev), QEDE_TSS_COUNT(edev));
2037
2038	rc = qede_set_real_num_queues(edev);
2039	if (rc)
2040		goto err2;
2041
2042	if (!IS_VF(edev) && edev->dev_info.common.num_hwfns == 1) {
2043		rc = qede_alloc_arfs(edev);
2044		if (rc)
2045			DP_NOTICE(edev, "aRFS memory allocation failed\n");
2046	}
2047
2048	qede_napi_add_enable(edev);
2049	DP_INFO(edev, "Napi added and enabled\n");
2050
2051	rc = qede_setup_irqs(edev);
2052	if (rc)
2053		goto err3;
2054	DP_INFO(edev, "Setup IRQs succeeded\n");
2055
2056	rc = qede_start_queues(edev, mode != QEDE_LOAD_RELOAD);
2057	if (rc)
2058		goto err4;
2059	DP_INFO(edev, "Start VPORT, RXQ and TXQ succeeded\n");
2060
 
 
 
 
2061	/* Program un-configured VLANs */
2062	qede_configure_vlan_filters(edev);
2063
 
 
2064	/* Ask for link-up using current configuration */
2065	memset(&link_params, 0, sizeof(link_params));
2066	link_params.link_up = true;
2067	edev->ops->common->set_link(edev->cdev, &link_params);
2068
2069	edev->state = QEDE_STATE_OPEN;
2070
2071	DP_INFO(edev, "Ending successfully qede load\n");
2072
2073	goto out;
2074err4:
2075	qede_sync_free_irqs(edev);
2076	memset(&edev->int_info.msix_cnt, 0, sizeof(struct qed_int_info));
2077err3:
2078	qede_napi_disable_remove(edev);
2079err2:
2080	qede_free_mem_load(edev);
2081err1:
2082	edev->ops->common->set_fp_int(edev->cdev, 0);
2083	qede_free_fp_array(edev);
2084	edev->num_queues = 0;
2085	edev->fp_num_tx = 0;
2086	edev->fp_num_rx = 0;
2087out:
2088	if (!is_locked)
2089		__qede_unlock(edev);
2090
2091	return rc;
2092}
2093
2094/* 'func' should be able to run between unload and reload assuming interface
2095 * is actually running, or afterwards in case it's currently DOWN.
2096 */
2097void qede_reload(struct qede_dev *edev,
2098		 struct qede_reload_args *args, bool is_locked)
2099{
2100	if (!is_locked)
2101		__qede_lock(edev);
2102
2103	/* Since qede_lock is held, internal state wouldn't change even
2104	 * if netdev state would start transitioning. Check whether current
2105	 * internal configuration indicates device is up, then reload.
2106	 */
2107	if (edev->state == QEDE_STATE_OPEN) {
2108		qede_unload(edev, QEDE_UNLOAD_NORMAL, true);
2109		if (args)
2110			args->func(edev, args);
2111		qede_load(edev, QEDE_LOAD_RELOAD, true);
2112
2113		/* Since no one is going to do it for us, re-configure */
2114		qede_config_rx_mode(edev->ndev);
2115	} else if (args) {
2116		args->func(edev, args);
2117	}
2118
2119	if (!is_locked)
2120		__qede_unlock(edev);
2121}
2122
2123/* called with rtnl_lock */
2124static int qede_open(struct net_device *ndev)
2125{
2126	struct qede_dev *edev = netdev_priv(ndev);
2127	int rc;
2128
2129	netif_carrier_off(ndev);
2130
2131	edev->ops->common->set_power_state(edev->cdev, PCI_D0);
2132
2133	rc = qede_load(edev, QEDE_LOAD_NORMAL, false);
2134	if (rc)
2135		return rc;
2136
2137	udp_tunnel_get_rx_info(ndev);
2138
2139	edev->ops->common->update_drv_state(edev->cdev, true);
2140
2141	return 0;
2142}
2143
2144static int qede_close(struct net_device *ndev)
2145{
2146	struct qede_dev *edev = netdev_priv(ndev);
2147
2148	qede_unload(edev, QEDE_UNLOAD_NORMAL, false);
2149
2150	edev->ops->common->update_drv_state(edev->cdev, false);
2151
2152	return 0;
2153}
2154
2155static void qede_link_update(void *dev, struct qed_link_output *link)
2156{
2157	struct qede_dev *edev = dev;
2158
2159	if (!netif_running(edev->ndev)) {
2160		DP_VERBOSE(edev, NETIF_MSG_LINK, "Interface is not running\n");
2161		return;
2162	}
2163
2164	if (link->link_up) {
2165		if (!netif_carrier_ok(edev->ndev)) {
2166			DP_NOTICE(edev, "Link is up\n");
2167			netif_tx_start_all_queues(edev->ndev);
2168			netif_carrier_on(edev->ndev);
2169			qede_rdma_dev_event_open(edev);
2170		}
2171	} else {
2172		if (netif_carrier_ok(edev->ndev)) {
2173			DP_NOTICE(edev, "Link is down\n");
2174			netif_tx_disable(edev->ndev);
2175			netif_carrier_off(edev->ndev);
2176			qede_rdma_dev_event_close(edev);
2177		}
2178	}
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
2179}