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[thirdparty/linux.git] / drivers / net / ethernet / chelsio / cxgb4 / cxgb4_main.c
CommitLineData
b8ff05a9
DM		 1/*
2 * This file is part of the Chelsio T4 Ethernet driver for Linux.
3 *
b72a32da 4 * Copyright (c) 2003-2016 Chelsio Communications, Inc. All rights reserved.
b8ff05a9
DM		 5 *
6 * This software is available to you under a choice of one of two
7 * licenses. You may choose to be licensed under the terms of the GNU
8 * General Public License (GPL) Version 2, available from the file
9 * COPYING in the main directory of this source tree, or the
10 * OpenIB.org BSD license below:
11 *
12 * Redistribution and use in source and binary forms, with or
13 * without modification, are permitted provided that the following
14 * conditions are met:
15 *
16 * - Redistributions of source code must retain the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer.
19 *
20 * - Redistributions in binary form must reproduce the above
21 * copyright notice, this list of conditions and the following
22 * disclaimer in the documentation and/or other materials
23 * provided with the distribution.
24 *
25 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
26 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
27 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
28 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
29 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
30 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
31 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
32 * SOFTWARE.
33 */
34
35#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
36
37#include <linux/bitmap.h>
38#include <linux/crc32.h>
39#include <linux/ctype.h>
40#include <linux/debugfs.h>
41#include <linux/err.h>
42#include <linux/etherdevice.h>
43#include <linux/firmware.h>
01789349 44#include <linux/if.h>
b8ff05a9
DM		 45#include <linux/if_vlan.h>
46#include <linux/init.h>
47#include <linux/log2.h>
48#include <linux/mdio.h>
49#include <linux/module.h>
50#include <linux/moduleparam.h>
51#include <linux/mutex.h>
52#include <linux/netdevice.h>
53#include <linux/pci.h>
54#include <linux/aer.h>
55#include <linux/rtnetlink.h>
56#include <linux/sched.h>
57#include <linux/seq_file.h>
58#include <linux/sockios.h>
59#include <linux/vmalloc.h>
60#include <linux/workqueue.h>
61#include <net/neighbour.h>
62#include <net/netevent.h>
01bcca68 63#include <net/addrconf.h>
1ef8019b 64#include <net/bonding.h>
7c0f6ba6 65#include <linux/uaccess.h>
c5a8c0f3 66#include <linux/crash_dump.h>
846eac3f 67#include <net/udp_tunnel.h>
b8ff05a9
DM		 68
69#include "cxgb4.h"
d57fd6ca 70#include "cxgb4_filter.h"
b8ff05a9 71#include "t4_regs.h"
f612b815 72#include "t4_values.h"
b8ff05a9
DM		 73#include "t4_msg.h"
74#include "t4fw_api.h"
cd6c2f12 75#include "t4fw_version.h"
688848b1 76#include "cxgb4_dcb.h"
c68644ef 77#include "srq.h"
fd88b31a 78#include "cxgb4_debugfs.h"
b5a02f50 79#include "clip_tbl.h"
b8ff05a9 80#include "l2t.h"
3bdb376e 81#include "smt.h"
b72a32da 82#include "sched.h"
d8931847 83#include "cxgb4_tc_u32.h"
6a345b3d 84#include "cxgb4_tc_flower.h"
a4569504 85#include "cxgb4_ptp.h"
ad75b7d3 86#include "cxgb4_cudbg.h"
b8ff05a9 87
812034f1
HS		 88char cxgb4_driver_name[] = KBUILD_MODNAME;
89
01bcca68
VP		 90#ifdef DRV_VERSION
91#undef DRV_VERSION
92#endif
3a7f8554 93#define DRV_VERSION "2.0.0-ko"
812034f1 94const char cxgb4_driver_version[] = DRV_VERSION;
52a5f846 95#define DRV_DESC "Chelsio T4/T5/T6 Network Driver"
b8ff05a9 96
b8ff05a9
DM		 97#define DFLT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK | \
98 NETIF_MSG_TIMER | NETIF_MSG_IFDOWN | NETIF_MSG_IFUP |\
99 NETIF_MSG_RX_ERR | NETIF_MSG_TX_ERR)
100
3fedeab1
HS		 101/* Macros needed to support the PCI Device ID Table ...
102 */
103#define CH_PCI_DEVICE_ID_TABLE_DEFINE_BEGIN \
768ffc66 104 static const struct pci_device_id cxgb4_pci_tbl[] = {
baf50868
GG		 105#define CXGB4_UNIFIED_PF 0x4
106
107#define CH_PCI_DEVICE_ID_FUNCTION CXGB4_UNIFIED_PF
b8ff05a9 108
3fedeab1
HS		 109/* Include PCI Device IDs for both PF4 and PF0-3 so our PCI probe() routine is
110 * called for both.
111 */
112#define CH_PCI_DEVICE_ID_FUNCTION2 0x0
113
114#define CH_PCI_ID_TABLE_ENTRY(devid) \
baf50868 115 {PCI_VDEVICE(CHELSIO, (devid)), CXGB4_UNIFIED_PF}
3fedeab1
HS		 116
117#define CH_PCI_DEVICE_ID_TABLE_DEFINE_END \
118 { 0, } \
119 }
120
121#include "t4_pci_id_tbl.h"
b8ff05a9 122
16e47624 123#define FW4_FNAME "cxgb4/t4fw.bin"
0a57a536 124#define FW5_FNAME "cxgb4/t5fw.bin"
3ccc6cf7 125#define FW6_FNAME "cxgb4/t6fw.bin"
16e47624 126#define FW4_CFNAME "cxgb4/t4-config.txt"
0a57a536 127#define FW5_CFNAME "cxgb4/t5-config.txt"
3ccc6cf7 128#define FW6_CFNAME "cxgb4/t6-config.txt"
01b69614
HS		 129#define PHY_AQ1202_FIRMWARE "cxgb4/aq1202_fw.cld"
130#define PHY_BCM84834_FIRMWARE "cxgb4/bcm8483.bin"
131#define PHY_AQ1202_DEVICEID 0x4409
132#define PHY_BCM84834_DEVICEID 0x4486
b8ff05a9
DM		 133
134MODULE_DESCRIPTION(DRV_DESC);
135MODULE_AUTHOR("Chelsio Communications");
136MODULE_LICENSE("Dual BSD/GPL");
137MODULE_VERSION(DRV_VERSION);
138MODULE_DEVICE_TABLE(pci, cxgb4_pci_tbl);
16e47624 139MODULE_FIRMWARE(FW4_FNAME);
0a57a536 140MODULE_FIRMWARE(FW5_FNAME);
52a5f846 141MODULE_FIRMWARE(FW6_FNAME);
b8ff05a9 142
b8ff05a9
DM		 143/*
144 * The driver uses the best interrupt scheme available on a platform in the
145 * order MSI-X, MSI, legacy INTx interrupts. This parameter determines which
146 * of these schemes the driver may consider as follows:
147 *
148 * msi = 2: choose from among all three options
149 * msi = 1: only consider MSI and INTx interrupts
150 * msi = 0: force INTx interrupts
151 */
152static int msi = 2;
153
154module_param(msi, int, 0644);
155MODULE_PARM_DESC(msi, "whether to use INTx (0), MSI (1) or MSI-X (2)");
156
636f9d37
VP		 157/*
158 * Normally we tell the chip to deliver Ingress Packets into our DMA buffers
159 * offset by 2 bytes in order to have the IP headers line up on 4-byte
160 * boundaries. This is a requirement for many architectures which will throw
161 * a machine check fault if an attempt is made to access one of the 4-byte IP
162 * header fields on a non-4-byte boundary. And it's a major performance issue
163 * even on some architectures which allow it like some implementations of the
164 * x86 ISA. However, some architectures don't mind this and for some very
165 * edge-case performance sensitive applications (like forwarding large volumes
166 * of small packets), setting this DMA offset to 0 will decrease the number of
167 * PCI-E Bus transfers enough to measurably affect performance.
168 */
169static int rx_dma_offset = 2;
170
688848b1
AB		 171/* TX Queue select used to determine what algorithm to use for selecting TX
172 * queue. Select between the kernel provided function (select_queue=0) or user
173 * cxgb_select_queue function (select_queue=1)
174 *
175 * Default: select_queue=0
176 */
177static int select_queue;
178module_param(select_queue, int, 0644);
179MODULE_PARM_DESC(select_queue,
180 "Select between kernel provided method of selecting or driver method of selecting TX queue. Default is kernel method.");
181
b8ff05a9
DM		 182static struct dentry *cxgb4_debugfs_root;
183
94cdb8bb
HS		 184LIST_HEAD(adapter_list);
185DEFINE_MUTEX(uld_mutex);
b8ff05a9
DM		 186
187static void link_report(struct net_device *dev)
188{
189 if (!netif_carrier_ok(dev))
190 netdev_info(dev, "link down\n");
191 else {
192 static const char *fc[] = { "no", "Rx", "Tx", "Tx/Rx" };
193
85412255 194 const char *s;
b8ff05a9
DM		 195 const struct port_info *p = netdev_priv(dev);
196
197 switch (p->link_cfg.speed) {
5e78f7fd
GG		 198 case 100:
199 s = "100Mbps";
b8ff05a9 200 break;
e8b39015 201 case 1000:
5e78f7fd 202 s = "1Gbps";
b8ff05a9 203 break;
5e78f7fd
GG		 204 case 10000:
205 s = "10Gbps";
206 break;
207 case 25000:
208 s = "25Gbps";
b8ff05a9 209 break;
e8b39015 210 case 40000:
72aca4bf
KS		 211 s = "40Gbps";
212 break;
7cbe543c
GG		 213 case 50000:
214 s = "50Gbps";
215 break;
5e78f7fd
GG		 216 case 100000:
217 s = "100Gbps";
218 break;
85412255
HS		 219 default:
220 pr_info("%s: unsupported speed: %d\n",
221 dev->name, p->link_cfg.speed);
222 return;
b8ff05a9
DM		 223 }
224
225 netdev_info(dev, "link up, %s, full-duplex, %s PAUSE\n", s,
226 fc[p->link_cfg.fc]);
227 }
228}
229
688848b1
AB		 230#ifdef CONFIG_CHELSIO_T4_DCB
231/* Set up/tear down Data Center Bridging Priority mapping for a net device. */
232static void dcb_tx_queue_prio_enable(struct net_device *dev, int enable)
233{
234 struct port_info *pi = netdev_priv(dev);
235 struct adapter *adap = pi->adapter;
236 struct sge_eth_txq *txq = &adap->sge.ethtxq[pi->first_qset];
237 int i;
238
239 /* We use a simple mapping of Port TX Queue Index to DCB
240 * Priority when we're enabling DCB.
241 */
242 for (i = 0; i < pi->nqsets; i++, txq++) {
243 u32 name, value;
244 int err;
245
5167865a
HS		 246 name = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DMAQ) |
247 FW_PARAMS_PARAM_X_V(
248 FW_PARAMS_PARAM_DMAQ_EQ_DCBPRIO_ETH) |
249 FW_PARAMS_PARAM_YZ_V(txq->q.cntxt_id));
688848b1
AB		 250 value = enable ? i : 0xffffffff;
251
252 /* Since we can be called while atomic (from "interrupt
253 * level") we need to issue the Set Parameters Commannd
254 * without sleeping (timeout < 0).
255 */
b2612722 256 err = t4_set_params_timeout(adap, adap->mbox, adap->pf, 0, 1,
01b69614
HS		 257 &name, &value,
258 -FW_CMD_MAX_TIMEOUT);
688848b1
AB		 259
260 if (err)
261 dev_err(adap->pdev_dev,
262 "Can't %s DCB Priority on port %d, TX Queue %d: err=%d\n",
263 enable ? "set" : "unset", pi->port_id, i, -err);
10b00466 264 else
5ce36338 265 txq->dcb_prio = enable ? value : 0;
688848b1
AB		 266 }
267}
688848b1 268
ebddd97a 269int cxgb4_dcb_enabled(const struct net_device *dev)
218d48e7 270{
218d48e7
HS		 271 struct port_info *pi = netdev_priv(dev);
272
273 if (!pi->dcb.enabled)
274 return 0;
275
276 return ((pi->dcb.state == CXGB4_DCB_STATE_FW_ALLSYNCED) ||
277 (pi->dcb.state == CXGB4_DCB_STATE_HOST));
218d48e7 278}
7c70c4f8 279#endif /* CONFIG_CHELSIO_T4_DCB */
218d48e7 280
b8ff05a9
DM		 281void t4_os_link_changed(struct adapter *adapter, int port_id, int link_stat)
282{
283 struct net_device *dev = adapter->port[port_id];
284
285 /* Skip changes from disabled ports. */
286 if (netif_running(dev) && link_stat != netif_carrier_ok(dev)) {
287 if (link_stat)
288 netif_carrier_on(dev);
688848b1
AB		 289 else {
290#ifdef CONFIG_CHELSIO_T4_DCB
218d48e7 291 if (cxgb4_dcb_enabled(dev)) {
ba581f77 292 cxgb4_dcb_reset(dev);
218d48e7
HS		 293 dcb_tx_queue_prio_enable(dev, false);
294 }
688848b1 295#endif /* CONFIG_CHELSIO_T4_DCB */
b8ff05a9 296 netif_carrier_off(dev);
688848b1 297 }
b8ff05a9
DM		 298
299 link_report(dev);
300 }
301}
302
8156b0ba 303void t4_os_portmod_changed(struct adapter *adap, int port_id)
b8ff05a9
DM		 304{
305 static const char *mod_str[] = {
a0881cab 306 NULL, "LR", "SR", "ER", "passive DA", "active DA", "LRM"
b8ff05a9
DM		 307 };
308
8156b0ba
GG		 309 struct net_device *dev = adap->port[port_id];
310 struct port_info *pi = netdev_priv(dev);
b8ff05a9
DM		 311
312 if (pi->mod_type == FW_PORT_MOD_TYPE_NONE)
313 netdev_info(dev, "port module unplugged\n");
a0881cab 314 else if (pi->mod_type < ARRAY_SIZE(mod_str))
b8ff05a9 315 netdev_info(dev, "%s module inserted\n", mod_str[pi->mod_type]);
be81a2de
HS		 316 else if (pi->mod_type == FW_PORT_MOD_TYPE_NOTSUPPORTED)
317 netdev_info(dev, "%s: unsupported port module inserted\n",
318 dev->name);
319 else if (pi->mod_type == FW_PORT_MOD_TYPE_UNKNOWN)
320 netdev_info(dev, "%s: unknown port module inserted\n",
321 dev->name);
322 else if (pi->mod_type == FW_PORT_MOD_TYPE_ERROR)
323 netdev_info(dev, "%s: transceiver module error\n", dev->name);
324 else
325 netdev_info(dev, "%s: unknown module type %d inserted\n",
326 dev->name, pi->mod_type);
8156b0ba
GG		 327
328 /* If the interface is running, then we'll need any "sticky" Link
329 * Parameters redone with a new Transceiver Module.
330 */
331 pi->link_cfg.redo_l1cfg = netif_running(dev);
b8ff05a9
DM		 332}
333
fc08a01a
HS		 334int dbfifo_int_thresh = 10; /* 10 == 640 entry threshold */
335module_param(dbfifo_int_thresh, int, 0644);
336MODULE_PARM_DESC(dbfifo_int_thresh, "doorbell fifo interrupt threshold");
337
b8ff05a9 338/*
fc08a01a 339 * usecs to sleep while draining the dbfifo
b8ff05a9 340 */
fc08a01a
HS		 341static int dbfifo_drain_delay = 1000;
342module_param(dbfifo_drain_delay, int, 0644);
343MODULE_PARM_DESC(dbfifo_drain_delay,
344 "usecs to sleep while draining the dbfifo");
345
346static inline int cxgb4_set_addr_hash(struct port_info *pi)
b8ff05a9 347{
fc08a01a
HS		 348 struct adapter *adap = pi->adapter;
349 u64 vec = 0;
350 bool ucast = false;
351 struct hash_mac_addr *entry;
352
353 /* Calculate the hash vector for the updated list and program it */
354 list_for_each_entry(entry, &adap->mac_hlist, list) {
355 ucast |= is_unicast_ether_addr(entry->addr);
356 vec |= (1ULL << hash_mac_addr(entry->addr));
357 }
358 return t4_set_addr_hash(adap, adap->mbox, pi->viid, ucast,
359 vec, false);
360}
361
362static int cxgb4_mac_sync(struct net_device *netdev, const u8 *mac_addr)
363{
364 struct port_info *pi = netdev_priv(netdev);
365 struct adapter *adap = pi->adapter;
366 int ret;
b8ff05a9
DM		 367 u64 mhash = 0;
368 u64 uhash = 0;
f9f329ad
RR		 369 /* idx stores the index of allocated filters,
370 * its size should be modified based on the number of
371 * MAC addresses that we allocate filters for
372 */
373
374 u16 idx[1] = {};
fc08a01a
HS		 375 bool free = false;
376 bool ucast = is_unicast_ether_addr(mac_addr);
377 const u8 *maclist[1] = {mac_addr};
378 struct hash_mac_addr *new_entry;
379
f9f329ad
RR		 380 ret = cxgb4_alloc_mac_filt(adap, pi->viid, free, 1, maclist,
381 idx, ucast ? &uhash : &mhash, false);
fc08a01a
HS		 382 if (ret < 0)
383 goto out;
384 /* if hash != 0, then add the addr to hash addr list
385 * so on the end we will calculate the hash for the
386 * list and program it
387 */
388 if (uhash || mhash) {
389 new_entry = kzalloc(sizeof(*new_entry), GFP_ATOMIC);
390 if (!new_entry)
391 return -ENOMEM;
392 ether_addr_copy(new_entry->addr, mac_addr);
393 list_add_tail(&new_entry->list, &adap->mac_hlist);
394 ret = cxgb4_set_addr_hash(pi);
b8ff05a9 395 }
fc08a01a
HS		 396out:
397 return ret < 0 ? ret : 0;
398}
b8ff05a9 399
fc08a01a
HS		 400static int cxgb4_mac_unsync(struct net_device *netdev, const u8 *mac_addr)
401{
402 struct port_info *pi = netdev_priv(netdev);
403 struct adapter *adap = pi->adapter;
404 int ret;
405 const u8 *maclist[1] = {mac_addr};
406 struct hash_mac_addr *entry, *tmp;
b8ff05a9 407
fc08a01a
HS		 408 /* If the MAC address to be removed is in the hash addr
409 * list, delete it from the list and update hash vector
410 */
411 list_for_each_entry_safe(entry, tmp, &adap->mac_hlist, list) {
412 if (ether_addr_equal(entry->addr, mac_addr)) {
413 list_del(&entry->list);
414 kfree(entry);
415 return cxgb4_set_addr_hash(pi);
b8ff05a9
DM		 416 }
417 }
418
f9f329ad 419 ret = cxgb4_free_mac_filt(adap, pi->viid, 1, maclist, false);
fc08a01a 420 return ret < 0 ? -EINVAL : 0;
b8ff05a9
DM		 421}
422
423/*
424 * Set Rx properties of a port, such as promiscruity, address filters, and MTU.
425 * If @mtu is -1 it is left unchanged.
426 */
427static int set_rxmode(struct net_device *dev, int mtu, bool sleep_ok)
428{
b8ff05a9 429 struct port_info *pi = netdev_priv(dev);
fc08a01a 430 struct adapter *adapter = pi->adapter;
b8ff05a9 431
d01f7abc
HS		 432 __dev_uc_sync(dev, cxgb4_mac_sync, cxgb4_mac_unsync);
433 __dev_mc_sync(dev, cxgb4_mac_sync, cxgb4_mac_unsync);
fc08a01a
HS		 434
435 return t4_set_rxmode(adapter, adapter->mbox, pi->viid, mtu,
436 (dev->flags & IFF_PROMISC) ? 1 : 0,
437 (dev->flags & IFF_ALLMULTI) ? 1 : 0, 1, -1,
438 sleep_ok);
b8ff05a9
DM		 439}
440
441/**
3f8cfd0d
AV		 442 * cxgb4_change_mac - Update match filter for a MAC address.
443 * @pi: the port_info
444 * @viid: the VI id
445 * @tcam_idx: TCAM index of existing filter for old value of MAC address,
446 * or -1
447 * @addr: the new MAC address value
448 * @persist: whether a new MAC allocation should be persistent
449 * @add_smt: if true also add the address to the HW SMT
450 *
451 * Modifies an MPS filter and sets it to the new MAC address if
452 * @tcam_idx >= 0, or adds the MAC address to a new filter if
453 * @tcam_idx < 0. In the latter case the address is added persistently
454 * if @persist is %true.
455 * Addresses are programmed to hash region, if tcam runs out of entries.
456 *
457 */
2f0b9406
RR		 458int cxgb4_change_mac(struct port_info *pi, unsigned int viid,
459 int *tcam_idx, const u8 *addr, bool persist,
460 u8 *smt_idx)
3f8cfd0d
AV		 461{
462 struct adapter *adapter = pi->adapter;
463 struct hash_mac_addr *entry, *new_entry;
464 int ret;
465
466 ret = t4_change_mac(adapter, adapter->mbox, viid,
467 *tcam_idx, addr, persist, smt_idx);
468 /* We ran out of TCAM entries. try programming hash region. */
469 if (ret == -ENOMEM) {
470 /* If the MAC address to be updated is in the hash addr
471 * list, update it from the list
472 */
473 list_for_each_entry(entry, &adapter->mac_hlist, list) {
474 if (entry->iface_mac) {
475 ether_addr_copy(entry->addr, addr);
476 goto set_hash;
477 }
478 }
479 new_entry = kzalloc(sizeof(*new_entry), GFP_KERNEL);
480 if (!new_entry)
481 return -ENOMEM;
482 ether_addr_copy(new_entry->addr, addr);
483 new_entry->iface_mac = true;
484 list_add_tail(&new_entry->list, &adapter->mac_hlist);
485set_hash:
486 ret = cxgb4_set_addr_hash(pi);
487 } else if (ret >= 0) {
488 *tcam_idx = ret;
489 ret = 0;
490 }
491
492 return ret;
493}
494
495/*
b8ff05a9
DM		 496 * link_start - enable a port
497 * @dev: the port to enable
498 *
499 * Performs the MAC and PHY actions needed to enable a port.
500 */
501static int link_start(struct net_device *dev)
502{
503 int ret;
504 struct port_info *pi = netdev_priv(dev);
b2612722 505 unsigned int mb = pi->adapter->pf;
b8ff05a9
DM		 506
507 /*
508 * We do not set address filters and promiscuity here, the stack does
509 * that step explicitly.
510 */
060e0c75 511 ret = t4_set_rxmode(pi->adapter, mb, pi->viid, dev->mtu, -1, -1, -1,
f646968f 512 !!(dev->features & NETIF_F_HW_VLAN_CTAG_RX), true);
3f8cfd0d 513 if (ret == 0)
2f0b9406
RR		 514 ret = cxgb4_update_mac_filt(pi, pi->viid, &pi->xact_addr_filt,
515 dev->dev_addr, true, &pi->smt_idx);
b8ff05a9 516 if (ret == 0)
4036da90 517 ret = t4_link_l1cfg(pi->adapter, mb, pi->tx_chan,
060e0c75 518 &pi->link_cfg);
30f00847
AB		 519 if (ret == 0) {
520 local_bh_disable();
e2f4f4e9 521 ret = t4_enable_pi_params(pi->adapter, mb, pi, true,
688848b1 522 true, CXGB4_DCB_ENABLED);
30f00847
AB		 523 local_bh_enable();
524 }
688848b1 525
b8ff05a9
DM		 526 return ret;
527}
528
688848b1
AB		 529#ifdef CONFIG_CHELSIO_T4_DCB
530/* Handle a Data Center Bridging update message from the firmware. */
531static void dcb_rpl(struct adapter *adap, const struct fw_port_cmd *pcmd)
532{
2b5fb1f2 533 int port = FW_PORT_CMD_PORTID_G(ntohl(pcmd->op_to_portid));
134491fd 534 struct net_device *dev = adap->port[adap->chan_map[port]];
688848b1
AB		 535 int old_dcb_enabled = cxgb4_dcb_enabled(dev);
536 int new_dcb_enabled;
537
538 cxgb4_dcb_handle_fw_update(adap, pcmd);
539 new_dcb_enabled = cxgb4_dcb_enabled(dev);
540
541 /* If the DCB has become enabled or disabled on the port then we're
542 * going to need to set up/tear down DCB Priority parameters for the
543 * TX Queues associated with the port.
544 */
545 if (new_dcb_enabled != old_dcb_enabled)
546 dcb_tx_queue_prio_enable(dev, new_dcb_enabled);
547}
548#endif /* CONFIG_CHELSIO_T4_DCB */
549
f2b7e78d 550/* Response queue handler for the FW event queue.
b8ff05a9
DM		 551 */
552static int fwevtq_handler(struct sge_rspq *q, const __be64 *rsp,
553 const struct pkt_gl *gl)
554{
555 u8 opcode = ((const struct rss_header *)rsp)->opcode;
556
557 rsp++; /* skip RSS header */
b407a4a9
VP		 558
559 /* FW can send EGR_UPDATEs encapsulated in a CPL_FW4_MSG.
560 */
561 if (unlikely(opcode == CPL_FW4_MSG &&
562 ((const struct cpl_fw4_msg *)rsp)->type == FW_TYPE_RSSCPL)) {
563 rsp++;
564 opcode = ((const struct rss_header *)rsp)->opcode;
565 rsp++;
566 if (opcode != CPL_SGE_EGR_UPDATE) {
567 dev_err(q->adap->pdev_dev, "unexpected FW4/CPL %#x on FW event queue\n"
568 , opcode);
569 goto out;
570 }
571 }
572
b8ff05a9
DM		 573 if (likely(opcode == CPL_SGE_EGR_UPDATE)) {
574 const struct cpl_sge_egr_update *p = (void *)rsp;
bdc590b9 575 unsigned int qid = EGR_QID_G(ntohl(p->opcode_qid));
e46dab4d 576 struct sge_txq *txq;
b8ff05a9 577
e46dab4d 578 txq = q->adap->sge.egr_map[qid - q->adap->sge.egr_start];
b8ff05a9 579 txq->restarts++;
ab677ff4 580 if (txq->q_type == CXGB4_TXQ_ETH) {
b8ff05a9
DM		 581 struct sge_eth_txq *eq;
582
583 eq = container_of(txq, struct sge_eth_txq, q);
d429005f 584 t4_sge_eth_txq_egress_update(q->adap, eq, -1);
b8ff05a9 585 } else {
ab677ff4 586 struct sge_uld_txq *oq;
b8ff05a9 587
ab677ff4 588 oq = container_of(txq, struct sge_uld_txq, q);
b8ff05a9
DM		 589 tasklet_schedule(&oq->qresume_tsk);
590 }
591 } else if (opcode == CPL_FW6_MSG || opcode == CPL_FW4_MSG) {
592 const struct cpl_fw6_msg *p = (void *)rsp;
593
688848b1
AB		 594#ifdef CONFIG_CHELSIO_T4_DCB
595 const struct fw_port_cmd *pcmd = (const void *)p->data;
e2ac9628 596 unsigned int cmd = FW_CMD_OP_G(ntohl(pcmd->op_to_portid));
688848b1 597 unsigned int action =
2b5fb1f2 598 FW_PORT_CMD_ACTION_G(ntohl(pcmd->action_to_len16));
688848b1
AB		 599
600 if (cmd == FW_PORT_CMD &&
c3168cab
GG		 601 (action == FW_PORT_ACTION_GET_PORT_INFO ||
602 action == FW_PORT_ACTION_GET_PORT_INFO32)) {
2b5fb1f2 603 int port = FW_PORT_CMD_PORTID_G(
688848b1 604 be32_to_cpu(pcmd->op_to_portid));
c3168cab
GG		 605 struct net_device *dev;
606 int dcbxdis, state_input;
607
608 dev = q->adap->port[q->adap->chan_map[port]];
609 dcbxdis = (action == FW_PORT_ACTION_GET_PORT_INFO
90d4c5bb
GG		 610 ? !!(pcmd->u.info.dcbxdis_pkd & FW_PORT_CMD_DCBXDIS_F)
611 : !!(be32_to_cpu(pcmd->u.info32.lstatus32_to_cbllen32)
612 & FW_PORT_CMD_DCBXDIS32_F));
c3168cab
GG		 613 state_input = (dcbxdis
614 ? CXGB4_DCB_INPUT_FW_DISABLED
615 : CXGB4_DCB_INPUT_FW_ENABLED);
688848b1
AB		 616
617 cxgb4_dcb_state_fsm(dev, state_input);
618 }
619
620 if (cmd == FW_PORT_CMD &&
621 action == FW_PORT_ACTION_L2_DCB_CFG)
622 dcb_rpl(q->adap, pcmd);
623 else
624#endif
625 if (p->type == 0)
626 t4_handle_fw_rpl(q->adap, p->data);
b8ff05a9
DM		 627 } else if (opcode == CPL_L2T_WRITE_RPL) {
628 const struct cpl_l2t_write_rpl *p = (void *)rsp;
629
630 do_l2t_write_rpl(q->adap, p);
3bdb376e
KS		 631 } else if (opcode == CPL_SMT_WRITE_RPL) {
632 const struct cpl_smt_write_rpl *p = (void *)rsp;
633
634 do_smt_write_rpl(q->adap, p);
f2b7e78d
VP		 635 } else if (opcode == CPL_SET_TCB_RPL) {
636 const struct cpl_set_tcb_rpl *p = (void *)rsp;
637
638 filter_rpl(q->adap, p);
12b276fb
KS		 639 } else if (opcode == CPL_ACT_OPEN_RPL) {
640 const struct cpl_act_open_rpl *p = (void *)rsp;
641
642 hash_filter_rpl(q->adap, p);
3b0b3bee
KS		 643 } else if (opcode == CPL_ABORT_RPL_RSS) {
644 const struct cpl_abort_rpl_rss *p = (void *)rsp;
645
646 hash_del_filter_rpl(q->adap, p);
c68644ef
RR		 647 } else if (opcode == CPL_SRQ_TABLE_RPL) {
648 const struct cpl_srq_table_rpl *p = (void *)rsp;
649
650 do_srq_table_rpl(q->adap, p);
b8ff05a9
DM		 651 } else
652 dev_err(q->adap->pdev_dev,
653 "unexpected CPL %#x on FW event queue\n", opcode);
b407a4a9 654out:
b8ff05a9
DM		 655 return 0;
656}
657
b8ff05a9
DM		 658static void disable_msi(struct adapter *adapter)
659{
80f61f19 660 if (adapter->flags & CXGB4_USING_MSIX) {
b8ff05a9 661 pci_disable_msix(adapter->pdev);
80f61f19
AV		 662 adapter->flags &= ~CXGB4_USING_MSIX;
663 } else if (adapter->flags & CXGB4_USING_MSI) {
b8ff05a9 664 pci_disable_msi(adapter->pdev);
80f61f19 665 adapter->flags &= ~CXGB4_USING_MSI;
b8ff05a9
DM		 666 }
667}
668
669/*
670 * Interrupt handler for non-data events used with MSI-X.
671 */
672static irqreturn_t t4_nondata_intr(int irq, void *cookie)
673{
674 struct adapter *adap = cookie;
0d804338 675 u32 v = t4_read_reg(adap, MYPF_REG(PL_PF_INT_CAUSE_A));
b8ff05a9 676
0d804338 677 if (v & PFSW_F) {
b8ff05a9 678 adap->swintr = 1;
0d804338 679 t4_write_reg(adap, MYPF_REG(PL_PF_INT_CAUSE_A), v);
b8ff05a9 680 }
80f61f19 681 if (adap->flags & CXGB4_MASTER_PF)
c3c7b121 682 t4_slow_intr_handler(adap);
b8ff05a9
DM		 683 return IRQ_HANDLED;
684}
685
686/*
687 * Name the MSI-X interrupts.
688 */
689static void name_msix_vecs(struct adapter *adap)
690{
ba27816c 691 int i, j, msi_idx = 2, n = sizeof(adap->msix_info[0].desc);
b8ff05a9
DM		 692
693 /* non-data interrupts */
b1a3c2b6 694 snprintf(adap->msix_info[0].desc, n, "%s", adap->port[0]->name);
b8ff05a9
DM		 695
696 /* FW events */
b1a3c2b6
DM		 697 snprintf(adap->msix_info[1].desc, n, "%s-FWeventq",
698 adap->port[0]->name);
b8ff05a9
DM		 699
700 /* Ethernet queues */
701 for_each_port(adap, j) {
702 struct net_device *d = adap->port[j];
703 const struct port_info *pi = netdev_priv(d);
704
ba27816c 705 for (i = 0; i < pi->nqsets; i++, msi_idx++)
b8ff05a9
DM		 706 snprintf(adap->msix_info[msi_idx].desc, n, "%s-Rx%d",
707 d->name, i);
b8ff05a9 708 }
b8ff05a9
DM		 709}
710
c9765074
NK		 711int cxgb4_set_msix_aff(struct adapter *adap, unsigned short vec,
712 cpumask_var_t *aff_mask, int idx)
713{
714 int rv;
715
716 if (!zalloc_cpumask_var(aff_mask, GFP_KERNEL)) {
717 dev_err(adap->pdev_dev, "alloc_cpumask_var failed\n");
718 return -ENOMEM;
719 }
720
721 cpumask_set_cpu(cpumask_local_spread(idx, dev_to_node(adap->pdev_dev)),
722 *aff_mask);
723
724 rv = irq_set_affinity_hint(vec, *aff_mask);
725 if (rv)
726 dev_warn(adap->pdev_dev,
727 "irq_set_affinity_hint %u failed %d\n",
728 vec, rv);
729
730 return 0;
731}
732
733void cxgb4_clear_msix_aff(unsigned short vec, cpumask_var_t aff_mask)
734{
735 irq_set_affinity_hint(vec, NULL);
736 free_cpumask_var(aff_mask);
737}
738
b8ff05a9
DM		 739static int request_msix_queue_irqs(struct adapter *adap)
740{
741 struct sge *s = &adap->sge;
c9765074 742 struct msix_info *minfo;
0fbc81b3 743 int err, ethqidx;
cf38be6d 744 int msi_index = 2;
b8ff05a9
DM		 745
746 err = request_irq(adap->msix_info[1].vec, t4_sge_intr_msix, 0,
747 adap->msix_info[1].desc, &s->fw_evtq);
748 if (err)
749 return err;
750
751 for_each_ethrxq(s, ethqidx) {
c9765074
NK		 752 minfo = &adap->msix_info[msi_index];
753 err = request_irq(minfo->vec,
404d9e3f 754 t4_sge_intr_msix, 0,
c9765074 755 minfo->desc,
b8ff05a9
DM		 756 &s->ethrxq[ethqidx].rspq);
757 if (err)
758 goto unwind;
c9765074
NK		 759
760 cxgb4_set_msix_aff(adap, minfo->vec,
761 &minfo->aff_mask, ethqidx);
404d9e3f 762 msi_index++;
b8ff05a9 763 }
b8ff05a9
DM		 764 return 0;
765
766unwind:
c9765074
NK		 767 while (--ethqidx >= 0) {
768 msi_index--;
769 minfo = &adap->msix_info[msi_index];
770 cxgb4_clear_msix_aff(minfo->vec, minfo->aff_mask);
771 free_irq(minfo->vec, &s->ethrxq[ethqidx].rspq);
772 }
b8ff05a9
DM		 773 free_irq(adap->msix_info[1].vec, &s->fw_evtq);
774 return err;
775}
776
777static void free_msix_queue_irqs(struct adapter *adap)
778{
b8ff05a9 779 struct sge *s = &adap->sge;
c9765074
NK		 780 struct msix_info *minfo;
781 int i, msi_index = 2;
b8ff05a9
DM		 782
783 free_irq(adap->msix_info[1].vec, &s->fw_evtq);
c9765074
NK		 784 for_each_ethrxq(s, i) {
785 minfo = &adap->msix_info[msi_index++];
786 cxgb4_clear_msix_aff(minfo->vec, minfo->aff_mask);
787 free_irq(minfo->vec, &s->ethrxq[i].rspq);
788 }
b8ff05a9
DM		 789}
790
a248384e
VP		 791static int setup_ppod_edram(struct adapter *adap)
792{
793 unsigned int param, val;
794 int ret;
795
796 /* Driver sends FW_PARAMS_PARAM_DEV_PPOD_EDRAM read command to check
797 * if firmware supports ppod edram feature or not. If firmware
798 * returns 1, then driver can enable this feature by sending
799 * FW_PARAMS_PARAM_DEV_PPOD_EDRAM write command with value 1 to
800 * enable ppod edram feature.
801 */
802 param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
803 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_PPOD_EDRAM));
804
805 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, &param, &val);
806 if (ret < 0) {
807 dev_warn(adap->pdev_dev,
808 "querying PPOD_EDRAM support failed: %d\n",
809 ret);
810 return -1;
811 }
812
813 if (val != 1)
814 return -1;
815
816 ret = t4_set_params(adap, adap->mbox, adap->pf, 0, 1, &param, &val);
817 if (ret < 0) {
818 dev_err(adap->pdev_dev,
819 "setting PPOD_EDRAM failed: %d\n", ret);
820 return -1;
821 }
822 return 0;
823}
824
671b0060 825/**
812034f1 826 * cxgb4_write_rss - write the RSS table for a given port
671b0060
DM		 827 * @pi: the port
828 * @queues: array of queue indices for RSS
829 *
830 * Sets up the portion of the HW RSS table for the port's VI to distribute
831 * packets to the Rx queues in @queues.
c035e183 832 * Should never be called before setting up sge eth rx queues
671b0060 833 */
812034f1 834int cxgb4_write_rss(const struct port_info *pi, const u16 *queues)
671b0060
DM		 835{
836 u16 *rss;
837 int i, err;
c035e183
HS		 838 struct adapter *adapter = pi->adapter;
839 const struct sge_eth_rxq *rxq;
671b0060 840
c035e183 841 rxq = &adapter->sge.ethrxq[pi->first_qset];
6da2ec56 842 rss = kmalloc_array(pi->rss_size, sizeof(u16), GFP_KERNEL);
671b0060
DM		 843 if (!rss)
844 return -ENOMEM;
845
846 /* map the queue indices to queue ids */
847 for (i = 0; i < pi->rss_size; i++, queues++)
c035e183 848 rss[i] = rxq[*queues].rspq.abs_id;
671b0060 849
b2612722 850 err = t4_config_rss_range(adapter, adapter->pf, pi->viid, 0,
060e0c75 851 pi->rss_size, rss, pi->rss_size);
c035e183
HS		 852 /* If Tunnel All Lookup isn't specified in the global RSS
853 * Configuration, then we need to specify a default Ingress
854 * Queue for any ingress packets which aren't hashed. We'll
855 * use our first ingress queue ...
856 */
857 if (!err)
858 err = t4_config_vi_rss(adapter, adapter->mbox, pi->viid,
859 FW_RSS_VI_CONFIG_CMD_IP6FOURTUPEN_F |
860 FW_RSS_VI_CONFIG_CMD_IP6TWOTUPEN_F |
861 FW_RSS_VI_CONFIG_CMD_IP4FOURTUPEN_F |
862 FW_RSS_VI_CONFIG_CMD_IP4TWOTUPEN_F |
863 FW_RSS_VI_CONFIG_CMD_UDPEN_F,
864 rss[0]);
671b0060
DM		 865 kfree(rss);
866 return err;
867}
868
b8ff05a9
DM		 869/**
870 * setup_rss - configure RSS
871 * @adap: the adapter
872 *
671b0060 873 * Sets up RSS for each port.
b8ff05a9
DM		 874 */
875static int setup_rss(struct adapter *adap)
876{
c035e183 877 int i, j, err;
b8ff05a9
DM		 878
879 for_each_port(adap, i) {
880 const struct port_info *pi = adap2pinfo(adap, i);
b8ff05a9 881
c035e183
HS		 882 /* Fill default values with equal distribution */
883 for (j = 0; j < pi->rss_size; j++)
884 pi->rss[j] = j % pi->nqsets;
885
812034f1 886 err = cxgb4_write_rss(pi, pi->rss);
b8ff05a9
DM		 887 if (err)
888 return err;
889 }
890 return 0;
891}
892
e46dab4d
DM		 893/*
894 * Return the channel of the ingress queue with the given qid.
895 */
896static unsigned int rxq_to_chan(const struct sge *p, unsigned int qid)
897{
898 qid -= p->ingr_start;
899 return netdev2pinfo(p->ingr_map[qid]->netdev)->tx_chan;
900}
901
b8ff05a9
DM		 902/*
903 * Wait until all NAPI handlers are descheduled.
904 */
905static void quiesce_rx(struct adapter *adap)
906{
907 int i;
908
4b8e27a8 909 for (i = 0; i < adap->sge.ingr_sz; i++) {
b8ff05a9
DM		 910 struct sge_rspq *q = adap->sge.ingr_map[i];
911
5226b791 912 if (q && q->handler)
b8ff05a9
DM		 913 napi_disable(&q->napi);
914 }
915}
916
b37987e8
HS		 917/* Disable interrupt and napi handler */
918static void disable_interrupts(struct adapter *adap)
919{
80f61f19 920 if (adap->flags & CXGB4_FULL_INIT_DONE) {
b37987e8 921 t4_intr_disable(adap);
80f61f19 922 if (adap->flags & CXGB4_USING_MSIX) {
b37987e8
HS		 923 free_msix_queue_irqs(adap);
924 free_irq(adap->msix_info[0].vec, adap);
925 } else {
926 free_irq(adap->pdev->irq, adap);
927 }
928 quiesce_rx(adap);
929 }
930}
931
b8ff05a9
DM		 932/*
933 * Enable NAPI scheduling and interrupt generation for all Rx queues.
934 */
935static void enable_rx(struct adapter *adap)
936{
937 int i;
938
4b8e27a8 939 for (i = 0; i < adap->sge.ingr_sz; i++) {
b8ff05a9
DM		 940 struct sge_rspq *q = adap->sge.ingr_map[i];
941
942 if (!q)
943 continue;
5226b791 944 if (q->handler)
b8ff05a9 945 napi_enable(&q->napi);
5226b791 946
b8ff05a9 947 /* 0-increment GTS to start the timer and enable interrupts */
f612b815
HS		 948 t4_write_reg(adap, MYPF_REG(SGE_PF_GTS_A),
949 SEINTARM_V(q->intr_params) |
950 INGRESSQID_V(q->cntxt_id));
b8ff05a9
DM		 951 }
952}
953
1c6a5b0e 954
0fbc81b3 955static int setup_fw_sge_queues(struct adapter *adap)
b8ff05a9 956{
b8ff05a9 957 struct sge *s = &adap->sge;
0fbc81b3 958 int err = 0;
b8ff05a9 959
4b8e27a8
HS		 960 bitmap_zero(s->starving_fl, s->egr_sz);
961 bitmap_zero(s->txq_maperr, s->egr_sz);
b8ff05a9 962
80f61f19 963 if (adap->flags & CXGB4_USING_MSIX)
94cdb8bb 964 adap->msi_idx = 1; /* vector 0 is for non-queue interrupts */
b8ff05a9
DM		 965 else {
966 err = t4_sge_alloc_rxq(adap, &s->intrq, false, adap->port[0], 0,
2337ba42 967 NULL, NULL, NULL, -1);
b8ff05a9
DM		 968 if (err)
969 return err;
94cdb8bb 970 adap->msi_idx = -((int)s->intrq.abs_id + 1);
b8ff05a9
DM		 971 }
972
973 err = t4_sge_alloc_rxq(adap, &s->fw_evtq, true, adap->port[0],
94cdb8bb 974 adap->msi_idx, NULL, fwevtq_handler, NULL, -1);
0fbc81b3
HS		 975 return err;
976}
977
978/**
979 * setup_sge_queues - configure SGE Tx/Rx/response queues
980 * @adap: the adapter
981 *
982 * Determines how many sets of SGE queues to use and initializes them.
983 * We support multiple queue sets per port if we have MSI-X, otherwise
984 * just one queue set per port.
985 */
986static int setup_sge_queues(struct adapter *adap)
987{
988 int err, i, j;
989 struct sge *s = &adap->sge;
d427caee 990 struct sge_uld_rxq_info *rxq_info = NULL;
0fbc81b3 991 unsigned int cmplqid = 0;
b8ff05a9 992
d427caee
GG		 993 if (is_uld(adap))
994 rxq_info = s->uld_rxq_info[CXGB4_ULD_RDMA];
995
b8ff05a9
DM		 996 for_each_port(adap, i) {
997 struct net_device *dev = adap->port[i];
998 struct port_info *pi = netdev_priv(dev);
999 struct sge_eth_rxq *q = &s->ethrxq[pi->first_qset];
1000 struct sge_eth_txq *t = &s->ethtxq[pi->first_qset];
1001
1002 for (j = 0; j < pi->nqsets; j++, q++) {
94cdb8bb
HS		 1003 if (adap->msi_idx > 0)
1004 adap->msi_idx++;
b8ff05a9 1005 err = t4_sge_alloc_rxq(adap, &q->rspq, false, dev,
94cdb8bb 1006 adap->msi_idx, &q->fl,
145ef8a5 1007 t4_ethrx_handler,
2337ba42 1008 NULL,
193c4c28
AV		 1009 t4_get_tp_ch_map(adap,
1010 pi->tx_chan));
b8ff05a9
DM		 1011 if (err)
1012 goto freeout;
1013 q->rspq.idx = j;
1014 memset(&q->stats, 0, sizeof(q->stats));
1015 }
d429005f
VK		 1016
1017 q = &s->ethrxq[pi->first_qset];
1018 for (j = 0; j < pi->nqsets; j++, t++, q++) {
b8ff05a9
DM		 1019 err = t4_sge_alloc_eth_txq(adap, t, dev,
1020 netdev_get_tx_queue(dev, j),
d429005f 1021 q->rspq.cntxt_id,
80f61f19 1022 !!(adap->flags & CXGB4_SGE_DBQ_TIMER));
b8ff05a9
DM		 1023 if (err)
1024 goto freeout;
1025 }
1026 }
1027
b8ff05a9 1028 for_each_port(adap, i) {
0fbc81b3 1029 /* Note that cmplqid below is 0 if we don't
b8ff05a9
DM		 1030 * have RDMA queues, and that's the right value.
1031 */
0fbc81b3
HS		 1032 if (rxq_info)
1033 cmplqid = rxq_info->uldrxq[i].rspq.cntxt_id;
1034
b8ff05a9 1035 err = t4_sge_alloc_ctrl_txq(adap, &s->ctrlq[i], adap->port[i],
0fbc81b3 1036 s->fw_evtq.cntxt_id, cmplqid);
b8ff05a9
DM		 1037 if (err)
1038 goto freeout;
1039 }
1040
a4569504
AG		 1041 if (!is_t4(adap->params.chip)) {
1042 err = t4_sge_alloc_eth_txq(adap, &s->ptptxq, adap->port[0],
1043 netdev_get_tx_queue(adap->port[0], 0)
d429005f 1044 , s->fw_evtq.cntxt_id, false);
a4569504
AG		 1045 if (err)
1046 goto freeout;
1047 }
1048
9bb59b96 1049 t4_write_reg(adap, is_t4(adap->params.chip) ?
837e4a42
HS		 1050 MPS_TRC_RSS_CONTROL_A :
1051 MPS_T5_TRC_RSS_CONTROL_A,
1052 RSSCONTROL_V(netdev2pinfo(adap->port[0])->tx_chan) |
1053 QUEUENUMBER_V(s->ethrxq[0].rspq.abs_id));
b8ff05a9 1054 return 0;
0fbc81b3 1055freeout:
0eaec62a 1056 dev_err(adap->pdev_dev, "Can't allocate queues, err=%d\n", -err);
0fbc81b3
HS		 1057 t4_free_sge_resources(adap);
1058 return err;
b8ff05a9
DM		 1059}
1060
688848b1 1061static u16 cxgb_select_queue(struct net_device *dev, struct sk_buff *skb,
a350ecce 1062 struct net_device *sb_dev)
688848b1
AB		 1063{
1064 int txq;
1065
1066#ifdef CONFIG_CHELSIO_T4_DCB
1067 /* If a Data Center Bridging has been successfully negotiated on this
1068 * link then we'll use the skb's priority to map it to a TX Queue.
1069 * The skb's priority is determined via the VLAN Tag Priority Code
1070 * Point field.
1071 */
85eacf3f 1072 if (cxgb4_dcb_enabled(dev) && !is_kdump_kernel()) {
688848b1
AB		 1073 u16 vlan_tci;
1074 int err;
1075
1076 err = vlan_get_tag(skb, &vlan_tci);
1077 if (unlikely(err)) {
1078 if (net_ratelimit())
1079 netdev_warn(dev,
1080 "TX Packet without VLAN Tag on DCB Link\n");
1081 txq = 0;
1082 } else {
1083 txq = (vlan_tci & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT;
84a200b3
VP		 1084#ifdef CONFIG_CHELSIO_T4_FCOE
1085 if (skb->protocol == htons(ETH_P_FCOE))
1086 txq = skb->priority & 0x7;
1087#endif /* CONFIG_CHELSIO_T4_FCOE */
688848b1
AB		 1088 }
1089 return txq;
1090 }
1091#endif /* CONFIG_CHELSIO_T4_DCB */
1092
1093 if (select_queue) {
1094 txq = (skb_rx_queue_recorded(skb)
1095 ? skb_get_rx_queue(skb)
1096 : smp_processor_id());
1097
1098 while (unlikely(txq >= dev->real_num_tx_queues))
1099 txq -= dev->real_num_tx_queues;
1100
1101 return txq;
1102 }
1103
a350ecce 1104 return netdev_pick_tx(dev, skb, NULL) % dev->real_num_tx_queues;
688848b1
AB		 1105}
1106
b8ff05a9
DM		 1107static int closest_timer(const struct sge *s, int time)
1108{
1109 int i, delta, match = 0, min_delta = INT_MAX;
1110
1111 for (i = 0; i < ARRAY_SIZE(s->timer_val); i++) {
1112 delta = time - s->timer_val[i];
1113 if (delta < 0)
1114 delta = -delta;
1115 if (delta < min_delta) {
1116 min_delta = delta;
1117 match = i;
1118 }
1119 }
1120 return match;
1121}
1122
1123static int closest_thres(const struct sge *s, int thres)
1124{
1125 int i, delta, match = 0, min_delta = INT_MAX;
1126
1127 for (i = 0; i < ARRAY_SIZE(s->counter_val); i++) {
1128 delta = thres - s->counter_val[i];
1129 if (delta < 0)
1130 delta = -delta;
1131 if (delta < min_delta) {
1132 min_delta = delta;
1133 match = i;
1134 }
1135 }
1136 return match;
1137}
1138
b8ff05a9 1139/**
812034f1 1140 * cxgb4_set_rspq_intr_params - set a queue's interrupt holdoff parameters
b8ff05a9
DM		 1141 * @q: the Rx queue
1142 * @us: the hold-off time in us, or 0 to disable timer
1143 * @cnt: the hold-off packet count, or 0 to disable counter
1144 *
1145 * Sets an Rx queue's interrupt hold-off time and packet count. At least
1146 * one of the two needs to be enabled for the queue to generate interrupts.
1147 */
812034f1
HS		 1148int cxgb4_set_rspq_intr_params(struct sge_rspq *q,
1149 unsigned int us, unsigned int cnt)
b8ff05a9 1150{
c887ad0e
HS		 1151 struct adapter *adap = q->adap;
1152
b8ff05a9
DM		 1153 if ((us | cnt) == 0)
1154 cnt = 1;
1155
1156 if (cnt) {
1157 int err;
1158 u32 v, new_idx;
1159
1160 new_idx = closest_thres(&adap->sge, cnt);
1161 if (q->desc && q->pktcnt_idx != new_idx) {
1162 /* the queue has already been created, update it */
5167865a
HS		 1163 v = FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DMAQ) |
1164 FW_PARAMS_PARAM_X_V(
1165 FW_PARAMS_PARAM_DMAQ_IQ_INTCNTTHRESH) |
1166 FW_PARAMS_PARAM_YZ_V(q->cntxt_id);
b2612722
HS		 1167 err = t4_set_params(adap, adap->mbox, adap->pf, 0, 1,
1168 &v, &new_idx);
b8ff05a9
DM		 1169 if (err)
1170 return err;
1171 }
1172 q->pktcnt_idx = new_idx;
1173 }
1174
1175 us = us == 0 ? 6 : closest_timer(&adap->sge, us);
1ecc7b7a 1176 q->intr_params = QINTR_TIMER_IDX_V(us) | QINTR_CNT_EN_V(cnt > 0);
b8ff05a9
DM		 1177 return 0;
1178}
1179
c8f44aff 1180static int cxgb_set_features(struct net_device *dev, netdev_features_t features)
87b6cf51 1181{
2ed28baa 1182 const struct port_info *pi = netdev_priv(dev);
c8f44aff 1183 netdev_features_t changed = dev->features ^ features;
19ecae2c 1184 int err;
19ecae2c 1185
f646968f 1186 if (!(changed & NETIF_F_HW_VLAN_CTAG_RX))
2ed28baa 1187 return 0;
19ecae2c 1188
b2612722 1189 err = t4_set_rxmode(pi->adapter, pi->adapter->pf, pi->viid, -1,
2ed28baa 1190 -1, -1, -1,
f646968f 1191 !!(features & NETIF_F_HW_VLAN_CTAG_RX), true);
2ed28baa 1192 if (unlikely(err))
f646968f 1193 dev->features = features ^ NETIF_F_HW_VLAN_CTAG_RX;
19ecae2c 1194 return err;
87b6cf51
DM		 1195}
1196
91744948 1197static int setup_debugfs(struct adapter *adap)
b8ff05a9 1198{
b8ff05a9
DM		 1199 if (IS_ERR_OR_NULL(adap->debugfs_root))
1200 return -1;
1201
fd88b31a
HS		 1202#ifdef CONFIG_DEBUG_FS
1203 t4_setup_debugfs(adap);
1204#endif
b8ff05a9
DM		 1205 return 0;
1206}
1207
1208/*
1209 * upper-layer driver support
1210 */
1211
1212/*
1213 * Allocate an active-open TID and set it to the supplied value.
1214 */
1215int cxgb4_alloc_atid(struct tid_info *t, void *data)
1216{
1217 int atid = -1;
1218
1219 spin_lock_bh(&t->atid_lock);
1220 if (t->afree) {
1221 union aopen_entry *p = t->afree;
1222
f2b7e78d 1223 atid = (p - t->atid_tab) + t->atid_base;
b8ff05a9
DM		 1224 t->afree = p->next;
1225 p->data = data;
1226 t->atids_in_use++;
1227 }
1228 spin_unlock_bh(&t->atid_lock);
1229 return atid;
1230}
1231EXPORT_SYMBOL(cxgb4_alloc_atid);
1232
1233/*
1234 * Release an active-open TID.
1235 */
1236void cxgb4_free_atid(struct tid_info *t, unsigned int atid)
1237{
f2b7e78d 1238 union aopen_entry *p = &t->atid_tab[atid - t->atid_base];
b8ff05a9
DM		 1239
1240 spin_lock_bh(&t->atid_lock);
1241 p->next = t->afree;
1242 t->afree = p;
1243 t->atids_in_use--;
1244 spin_unlock_bh(&t->atid_lock);
1245}
1246EXPORT_SYMBOL(cxgb4_free_atid);
1247
1248/*
1249 * Allocate a server TID and set it to the supplied value.
1250 */
1251int cxgb4_alloc_stid(struct tid_info *t, int family, void *data)
1252{
1253 int stid;
1254
1255 spin_lock_bh(&t->stid_lock);
1256 if (family == PF_INET) {
1257 stid = find_first_zero_bit(t->stid_bmap, t->nstids);
1258 if (stid < t->nstids)
1259 __set_bit(stid, t->stid_bmap);
1260 else
1261 stid = -1;
1262 } else {
a99c683e 1263 stid = bitmap_find_free_region(t->stid_bmap, t->nstids, 1);
b8ff05a9
DM		 1264 if (stid < 0)
1265 stid = -1;
1266 }
1267 if (stid >= 0) {
1268 t->stid_tab[stid].data = data;
1269 stid += t->stid_base;
15f63b74
KS		 1270 /* IPv6 requires max of 520 bits or 16 cells in TCAM
1271 * This is equivalent to 4 TIDs. With CLIP enabled it
1272 * needs 2 TIDs.
1273 */
1dec4cec 1274 if (family == PF_INET6) {
a99c683e 1275 t->stids_in_use += 2;
1dec4cec
GG		 1276 t->v6_stids_in_use += 2;
1277 } else {
1278 t->stids_in_use++;
1279 }
b8ff05a9
DM		 1280 }
1281 spin_unlock_bh(&t->stid_lock);
1282 return stid;
1283}
1284EXPORT_SYMBOL(cxgb4_alloc_stid);
1285
dca4faeb
VP		 1286/* Allocate a server filter TID and set it to the supplied value.
1287 */
1288int cxgb4_alloc_sftid(struct tid_info *t, int family, void *data)
1289{
1290 int stid;
1291
1292 spin_lock_bh(&t->stid_lock);
1293 if (family == PF_INET) {
1294 stid = find_next_zero_bit(t->stid_bmap,
1295 t->nstids + t->nsftids, t->nstids);
1296 if (stid < (t->nstids + t->nsftids))
1297 __set_bit(stid, t->stid_bmap);
1298 else
1299 stid = -1;
1300 } else {
1301 stid = -1;
1302 }
1303 if (stid >= 0) {
1304 t->stid_tab[stid].data = data;
470c60c4
KS		 1305 stid -= t->nstids;
1306 stid += t->sftid_base;
2248b293 1307 t->sftids_in_use++;
dca4faeb
VP		 1308 }
1309 spin_unlock_bh(&t->stid_lock);
1310 return stid;
1311}
1312EXPORT_SYMBOL(cxgb4_alloc_sftid);
1313
1314/* Release a server TID.
b8ff05a9
DM		 1315 */
1316void cxgb4_free_stid(struct tid_info *t, unsigned int stid, int family)
1317{
470c60c4
KS		 1318 /* Is it a server filter TID? */
1319 if (t->nsftids && (stid >= t->sftid_base)) {
1320 stid -= t->sftid_base;
1321 stid += t->nstids;
1322 } else {
1323 stid -= t->stid_base;
1324 }
1325
b8ff05a9
DM		 1326 spin_lock_bh(&t->stid_lock);
1327 if (family == PF_INET)
1328 __clear_bit(stid, t->stid_bmap);
1329 else
a99c683e 1330 bitmap_release_region(t->stid_bmap, stid, 1);
b8ff05a9 1331 t->stid_tab[stid].data = NULL;
2248b293 1332 if (stid < t->nstids) {
1dec4cec 1333 if (family == PF_INET6) {
a99c683e 1334 t->stids_in_use -= 2;
1dec4cec
GG		 1335 t->v6_stids_in_use -= 2;
1336 } else {
1337 t->stids_in_use--;
1338 }
2248b293
HS		 1339 } else {
1340 t->sftids_in_use--;
1341 }
1dec4cec 1342
b8ff05a9
DM		 1343 spin_unlock_bh(&t->stid_lock);
1344}
1345EXPORT_SYMBOL(cxgb4_free_stid);
1346
1347/*
1348 * Populate a TID_RELEASE WR. Caller must properly size the skb.
1349 */
1350static void mk_tid_release(struct sk_buff *skb, unsigned int chan,
1351 unsigned int tid)
1352{
1353 struct cpl_tid_release *req;
1354
1355 set_wr_txq(skb, CPL_PRIORITY_SETUP, chan);
4df864c1 1356 req = __skb_put(skb, sizeof(*req));
b8ff05a9
DM		 1357 INIT_TP_WR(req, tid);
1358 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_TID_RELEASE, tid));
1359}
1360
1361/*
1362 * Queue a TID release request and if necessary schedule a work queue to
1363 * process it.
1364 */
31b9c19b 1365static void cxgb4_queue_tid_release(struct tid_info *t, unsigned int chan,
1366 unsigned int tid)
b8ff05a9
DM		 1367{
1368 void **p = &t->tid_tab[tid];
1369 struct adapter *adap = container_of(t, struct adapter, tids);
1370
1371 spin_lock_bh(&adap->tid_release_lock);
1372 *p = adap->tid_release_head;
1373 /* Low 2 bits encode the Tx channel number */
1374 adap->tid_release_head = (void **)((uintptr_t)p | chan);
1375 if (!adap->tid_release_task_busy) {
1376 adap->tid_release_task_busy = true;
29aaee65 1377 queue_work(adap->workq, &adap->tid_release_task);
b8ff05a9
DM		 1378 }
1379 spin_unlock_bh(&adap->tid_release_lock);
1380}
b8ff05a9
DM		 1381
1382/*
1383 * Process the list of pending TID release requests.
1384 */
1385static void process_tid_release_list(struct work_struct *work)
1386{
1387 struct sk_buff *skb;
1388 struct adapter *adap;
1389
1390 adap = container_of(work, struct adapter, tid_release_task);
1391
1392 spin_lock_bh(&adap->tid_release_lock);
1393 while (adap->tid_release_head) {
1394 void **p = adap->tid_release_head;
1395 unsigned int chan = (uintptr_t)p & 3;
1396 p = (void *)p - chan;
1397
1398 adap->tid_release_head = *p;
1399 *p = NULL;
1400 spin_unlock_bh(&adap->tid_release_lock);
1401
1402 while (!(skb = alloc_skb(sizeof(struct cpl_tid_release),
1403 GFP_KERNEL)))
1404 schedule_timeout_uninterruptible(1);
1405
1406 mk_tid_release(skb, chan, p - adap->tids.tid_tab);
1407 t4_ofld_send(adap, skb);
1408 spin_lock_bh(&adap->tid_release_lock);
1409 }
1410 adap->tid_release_task_busy = false;
1411 spin_unlock_bh(&adap->tid_release_lock);
1412}
1413
1414/*
1415 * Release a TID and inform HW. If we are unable to allocate the release
1416 * message we defer to a work queue.
1417 */
1dec4cec
GG		 1418void cxgb4_remove_tid(struct tid_info *t, unsigned int chan, unsigned int tid,
1419 unsigned short family)
b8ff05a9 1420{
b8ff05a9
DM		 1421 struct sk_buff *skb;
1422 struct adapter *adap = container_of(t, struct adapter, tids);
1423
9a1bb9f6
HS		 1424 WARN_ON(tid >= t->ntids);
1425
1426 if (t->tid_tab[tid]) {
1427 t->tid_tab[tid] = NULL;
1dec4cec
GG		 1428 atomic_dec(&t->conns_in_use);
1429 if (t->hash_base && (tid >= t->hash_base)) {
1430 if (family == AF_INET6)
1431 atomic_sub(2, &t->hash_tids_in_use);
1432 else
1433 atomic_dec(&t->hash_tids_in_use);
1434 } else {
1435 if (family == AF_INET6)
1436 atomic_sub(2, &t->tids_in_use);
1437 else
1438 atomic_dec(&t->tids_in_use);
1439 }
9a1bb9f6
HS		 1440 }
1441
b8ff05a9
DM		 1442 skb = alloc_skb(sizeof(struct cpl_tid_release), GFP_ATOMIC);
1443 if (likely(skb)) {
b8ff05a9
DM		 1444 mk_tid_release(skb, chan, tid);
1445 t4_ofld_send(adap, skb);
1446 } else
1447 cxgb4_queue_tid_release(t, chan, tid);
b8ff05a9
DM		 1448}
1449EXPORT_SYMBOL(cxgb4_remove_tid);
1450
1451/*
1452 * Allocate and initialize the TID tables. Returns 0 on success.
1453 */
1454static int tid_init(struct tid_info *t)
1455{
b6f8eaec 1456 struct adapter *adap = container_of(t, struct adapter, tids);
578b46b9
RL		 1457 unsigned int max_ftids = t->nftids + t->nsftids;
1458 unsigned int natids = t->natids;
1459 unsigned int stid_bmap_size;
1460 unsigned int ftid_bmap_size;
1461 size_t size;
b8ff05a9 1462
dca4faeb 1463 stid_bmap_size = BITS_TO_LONGS(t->nstids + t->nsftids);
578b46b9 1464 ftid_bmap_size = BITS_TO_LONGS(t->nftids);
f2b7e78d
VP		 1465 size = t->ntids * sizeof(*t->tid_tab) +
1466 natids * sizeof(*t->atid_tab) +
b8ff05a9 1467 t->nstids * sizeof(*t->stid_tab) +
dca4faeb 1468 t->nsftids * sizeof(*t->stid_tab) +
f2b7e78d 1469 stid_bmap_size * sizeof(long) +
578b46b9
RL		 1470 max_ftids * sizeof(*t->ftid_tab) +
1471 ftid_bmap_size * sizeof(long);
f2b7e78d 1472
752ade68 1473 t->tid_tab = kvzalloc(size, GFP_KERNEL);
b8ff05a9
DM		 1474 if (!t->tid_tab)
1475 return -ENOMEM;
1476
1477 t->atid_tab = (union aopen_entry *)&t->tid_tab[t->ntids];
1478 t->stid_tab = (struct serv_entry *)&t->atid_tab[natids];
dca4faeb 1479 t->stid_bmap = (unsigned long *)&t->stid_tab[t->nstids + t->nsftids];
f2b7e78d 1480 t->ftid_tab = (struct filter_entry *)&t->stid_bmap[stid_bmap_size];
578b46b9 1481 t->ftid_bmap = (unsigned long *)&t->ftid_tab[max_ftids];
b8ff05a9
DM		 1482 spin_lock_init(&t->stid_lock);
1483 spin_lock_init(&t->atid_lock);
578b46b9 1484 spin_lock_init(&t->ftid_lock);
b8ff05a9
DM		 1485
1486 t->stids_in_use = 0;
1dec4cec 1487 t->v6_stids_in_use = 0;
2248b293 1488 t->sftids_in_use = 0;
b8ff05a9
DM		 1489 t->afree = NULL;
1490 t->atids_in_use = 0;
1491 atomic_set(&t->tids_in_use, 0);
1dec4cec 1492 atomic_set(&t->conns_in_use, 0);
9a1bb9f6 1493 atomic_set(&t->hash_tids_in_use, 0);
b8ff05a9
DM		 1494
1495 /* Setup the free list for atid_tab and clear the stid bitmap. */
1496 if (natids) {
1497 while (--natids)
1498 t->atid_tab[natids - 1].next = &t->atid_tab[natids];
1499 t->afree = t->atid_tab;
1500 }
b6f8eaec 1501
578b46b9
RL		 1502 if (is_offload(adap)) {
1503 bitmap_zero(t->stid_bmap, t->nstids + t->nsftids);
1504 /* Reserve stid 0 for T4/T5 adapters */
1505 if (!t->stid_base &&
1506 CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5)
1507 __set_bit(0, t->stid_bmap);
1508 }
1509
1510 bitmap_zero(t->ftid_bmap, t->nftids);
b8ff05a9
DM		 1511 return 0;
1512}
1513
1514/**
1515 * cxgb4_create_server - create an IP server
1516 * @dev: the device
1517 * @stid: the server TID
1518 * @sip: local IP address to bind server to
1519 * @sport: the server's TCP port
1520 * @queue: queue to direct messages from this server to
1521 *
1522 * Create an IP server for the given port and address.
1523 * Returns <0 on error and one of the %NET_XMIT_* values on success.
1524 */
1525int cxgb4_create_server(const struct net_device *dev, unsigned int stid,
793dad94
VP		 1526 __be32 sip, __be16 sport, __be16 vlan,
1527 unsigned int queue)
b8ff05a9
DM		 1528{
1529 unsigned int chan;
1530 struct sk_buff *skb;
1531 struct adapter *adap;
1532 struct cpl_pass_open_req *req;
80f40c1f 1533 int ret;
b8ff05a9
DM		 1534
1535 skb = alloc_skb(sizeof(*req), GFP_KERNEL);
1536 if (!skb)
1537 return -ENOMEM;
1538
1539 adap = netdev2adap(dev);
4df864c1 1540 req = __skb_put(skb, sizeof(*req));
b8ff05a9
DM		 1541 INIT_TP_WR(req, 0);
1542 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ, stid));
1543 req->local_port = sport;
1544 req->peer_port = htons(0);
1545 req->local_ip = sip;
1546 req->peer_ip = htonl(0);
e46dab4d 1547 chan = rxq_to_chan(&adap->sge, queue);
d7990b0c 1548 req->opt0 = cpu_to_be64(TX_CHAN_V(chan));
6c53e938
HS		 1549 req->opt1 = cpu_to_be64(CONN_POLICY_V(CPL_CONN_POLICY_ASK) |
1550 SYN_RSS_ENABLE_F | SYN_RSS_QUEUE_V(queue));
80f40c1f
VP		 1551 ret = t4_mgmt_tx(adap, skb);
1552 return net_xmit_eval(ret);
b8ff05a9
DM		 1553}
1554EXPORT_SYMBOL(cxgb4_create_server);
1555
80f40c1f
VP		 1556/* cxgb4_create_server6 - create an IPv6 server
1557 * @dev: the device
1558 * @stid: the server TID
1559 * @sip: local IPv6 address to bind server to
1560 * @sport: the server's TCP port
1561 * @queue: queue to direct messages from this server to
1562 *
1563 * Create an IPv6 server for the given port and address.
1564 * Returns <0 on error and one of the %NET_XMIT_* values on success.
1565 */
1566int cxgb4_create_server6(const struct net_device *dev, unsigned int stid,
1567 const struct in6_addr *sip, __be16 sport,
1568 unsigned int queue)
1569{
1570 unsigned int chan;
1571 struct sk_buff *skb;
1572 struct adapter *adap;
1573 struct cpl_pass_open_req6 *req;
1574 int ret;
1575
1576 skb = alloc_skb(sizeof(*req), GFP_KERNEL);
1577 if (!skb)
1578 return -ENOMEM;
1579
1580 adap = netdev2adap(dev);
4df864c1 1581 req = __skb_put(skb, sizeof(*req));
80f40c1f
VP		 1582 INIT_TP_WR(req, 0);
1583 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_PASS_OPEN_REQ6, stid));
1584 req->local_port = sport;
1585 req->peer_port = htons(0);
1586 req->local_ip_hi = *(__be64 *)(sip->s6_addr);
1587 req->local_ip_lo = *(__be64 *)(sip->s6_addr + 8);
1588 req->peer_ip_hi = cpu_to_be64(0);
1589 req->peer_ip_lo = cpu_to_be64(0);
1590 chan = rxq_to_chan(&adap->sge, queue);
d7990b0c 1591 req->opt0 = cpu_to_be64(TX_CHAN_V(chan));
6c53e938
HS		 1592 req->opt1 = cpu_to_be64(CONN_POLICY_V(CPL_CONN_POLICY_ASK) |
1593 SYN_RSS_ENABLE_F | SYN_RSS_QUEUE_V(queue));
80f40c1f
VP		 1594 ret = t4_mgmt_tx(adap, skb);
1595 return net_xmit_eval(ret);
1596}
1597EXPORT_SYMBOL(cxgb4_create_server6);
1598
1599int cxgb4_remove_server(const struct net_device *dev, unsigned int stid,
1600 unsigned int queue, bool ipv6)
1601{
1602 struct sk_buff *skb;
1603 struct adapter *adap;
1604 struct cpl_close_listsvr_req *req;
1605 int ret;
1606
1607 adap = netdev2adap(dev);
1608
1609 skb = alloc_skb(sizeof(*req), GFP_KERNEL);
1610 if (!skb)
1611 return -ENOMEM;
1612
4df864c1 1613 req = __skb_put(skb, sizeof(*req));
80f40c1f
VP		 1614 INIT_TP_WR(req, 0);
1615 OPCODE_TID(req) = htonl(MK_OPCODE_TID(CPL_CLOSE_LISTSRV_REQ, stid));
bdc590b9
HS		 1616 req->reply_ctrl = htons(NO_REPLY_V(0) | (ipv6 ? LISTSVR_IPV6_V(1) :
1617 LISTSVR_IPV6_V(0)) | QUEUENO_V(queue));
80f40c1f
VP		 1618 ret = t4_mgmt_tx(adap, skb);
1619 return net_xmit_eval(ret);
1620}
1621EXPORT_SYMBOL(cxgb4_remove_server);
1622
b8ff05a9
DM		 1623/**
1624 * cxgb4_best_mtu - find the entry in the MTU table closest to an MTU
1625 * @mtus: the HW MTU table
1626 * @mtu: the target MTU
1627 * @idx: index of selected entry in the MTU table
1628 *
1629 * Returns the index and the value in the HW MTU table that is closest to
1630 * but does not exceed @mtu, unless @mtu is smaller than any value in the
1631 * table, in which case that smallest available value is selected.
1632 */
1633unsigned int cxgb4_best_mtu(const unsigned short *mtus, unsigned short mtu,
1634 unsigned int *idx)
1635{
1636 unsigned int i = 0;
1637
1638 while (i < NMTUS - 1 && mtus[i + 1] <= mtu)
1639 ++i;
1640 if (idx)
1641 *idx = i;
1642 return mtus[i];
1643}
1644EXPORT_SYMBOL(cxgb4_best_mtu);
1645
92e7ae71
HS		 1646/**
1647 * cxgb4_best_aligned_mtu - find best MTU, [hopefully] data size aligned
1648 * @mtus: the HW MTU table
1649 * @header_size: Header Size
1650 * @data_size_max: maximum Data Segment Size
1651 * @data_size_align: desired Data Segment Size Alignment (2^N)
1652 * @mtu_idxp: HW MTU Table Index return value pointer (possibly NULL)
1653 *
1654 * Similar to cxgb4_best_mtu() but instead of searching the Hardware
1655 * MTU Table based solely on a Maximum MTU parameter, we break that
1656 * parameter up into a Header Size and Maximum Data Segment Size, and
1657 * provide a desired Data Segment Size Alignment. If we find an MTU in
1658 * the Hardware MTU Table which will result in a Data Segment Size with
1659 * the requested alignment _and_ that MTU isn't "too far" from the
1660 * closest MTU, then we'll return that rather than the closest MTU.
1661 */
1662unsigned int cxgb4_best_aligned_mtu(const unsigned short *mtus,
1663 unsigned short header_size,
1664 unsigned short data_size_max,
1665 unsigned short data_size_align,
1666 unsigned int *mtu_idxp)
1667{
1668 unsigned short max_mtu = header_size + data_size_max;
1669 unsigned short data_size_align_mask = data_size_align - 1;
1670 int mtu_idx, aligned_mtu_idx;
1671
1672 /* Scan the MTU Table till we find an MTU which is larger than our
1673 * Maximum MTU or we reach the end of the table. Along the way,
1674 * record the last MTU found, if any, which will result in a Data
1675 * Segment Length matching the requested alignment.
1676 */
1677 for (mtu_idx = 0, aligned_mtu_idx = -1; mtu_idx < NMTUS; mtu_idx++) {
1678 unsigned short data_size = mtus[mtu_idx] - header_size;
1679
1680 /* If this MTU minus the Header Size would result in a
1681 * Data Segment Size of the desired alignment, remember it.
1682 */
1683 if ((data_size & data_size_align_mask) == 0)
1684 aligned_mtu_idx = mtu_idx;
1685
1686 /* If we're not at the end of the Hardware MTU Table and the
1687 * next element is larger than our Maximum MTU, drop out of
1688 * the loop.
1689 */
1690 if (mtu_idx+1 < NMTUS && mtus[mtu_idx+1] > max_mtu)
1691 break;
1692 }
1693
1694 /* If we fell out of the loop because we ran to the end of the table,
1695 * then we just have to use the last [largest] entry.
1696 */
1697 if (mtu_idx == NMTUS)
1698 mtu_idx--;
1699
1700 /* If we found an MTU which resulted in the requested Data Segment
1701 * Length alignment and that's "not far" from the largest MTU which is
1702 * less than or equal to the maximum MTU, then use that.
1703 */
1704 if (aligned_mtu_idx >= 0 &&
1705 mtu_idx - aligned_mtu_idx <= 1)
1706 mtu_idx = aligned_mtu_idx;
1707
1708 /* If the caller has passed in an MTU Index pointer, pass the
1709 * MTU Index back. Return the MTU value.
1710 */
1711 if (mtu_idxp)
1712 *mtu_idxp = mtu_idx;
1713 return mtus[mtu_idx];
1714}
1715EXPORT_SYMBOL(cxgb4_best_aligned_mtu);
1716
b8ff05a9
DM		 1717/**
1718 * cxgb4_port_chan - get the HW channel of a port
1719 * @dev: the net device for the port
1720 *
1721 * Return the HW Tx channel of the given port.
1722 */
1723unsigned int cxgb4_port_chan(const struct net_device *dev)
1724{
1725 return netdev2pinfo(dev)->tx_chan;
1726}
1727EXPORT_SYMBOL(cxgb4_port_chan);
1728
74dd5aa1
VK		 1729/**
1730 * cxgb4_port_e2cchan - get the HW c-channel of a port
1731 * @dev: the net device for the port
1732 *
1733 * Return the HW RX c-channel of the given port.
1734 */
1735unsigned int cxgb4_port_e2cchan(const struct net_device *dev)
1736{
1737 return netdev2pinfo(dev)->rx_cchan;
1738}
1739EXPORT_SYMBOL(cxgb4_port_e2cchan);
1740
881806bc
VP		 1741unsigned int cxgb4_dbfifo_count(const struct net_device *dev, int lpfifo)
1742{
1743 struct adapter *adap = netdev2adap(dev);
2cc301d2 1744 u32 v1, v2, lp_count, hp_count;
881806bc 1745
f061de42
HS		 1746 v1 = t4_read_reg(adap, SGE_DBFIFO_STATUS_A);
1747 v2 = t4_read_reg(adap, SGE_DBFIFO_STATUS2_A);
d14807dd 1748 if (is_t4(adap->params.chip)) {
f061de42
HS		 1749 lp_count = LP_COUNT_G(v1);
1750 hp_count = HP_COUNT_G(v1);
2cc301d2 1751 } else {
f061de42
HS		 1752 lp_count = LP_COUNT_T5_G(v1);
1753 hp_count = HP_COUNT_T5_G(v2);
2cc301d2
SR		 1754 }
1755 return lpfifo ? lp_count : hp_count;
881806bc
VP		 1756}
1757EXPORT_SYMBOL(cxgb4_dbfifo_count);
1758
b8ff05a9
DM		 1759/**
1760 * cxgb4_port_viid - get the VI id of a port
1761 * @dev: the net device for the port
1762 *
1763 * Return the VI id of the given port.
1764 */
1765unsigned int cxgb4_port_viid(const struct net_device *dev)
1766{
1767 return netdev2pinfo(dev)->viid;
1768}
1769EXPORT_SYMBOL(cxgb4_port_viid);
1770
1771/**
1772 * cxgb4_port_idx - get the index of a port
1773 * @dev: the net device for the port
1774 *
1775 * Return the index of the given port.
1776 */
1777unsigned int cxgb4_port_idx(const struct net_device *dev)
1778{
1779 return netdev2pinfo(dev)->port_id;
1780}
1781EXPORT_SYMBOL(cxgb4_port_idx);
1782
b8ff05a9
DM		 1783void cxgb4_get_tcp_stats(struct pci_dev *pdev, struct tp_tcp_stats *v4,
1784 struct tp_tcp_stats *v6)
1785{
1786 struct adapter *adap = pci_get_drvdata(pdev);
1787
1788 spin_lock(&adap->stats_lock);
5ccf9d04 1789 t4_tp_get_tcp_stats(adap, v4, v6, false);
b8ff05a9
DM		 1790 spin_unlock(&adap->stats_lock);
1791}
1792EXPORT_SYMBOL(cxgb4_get_tcp_stats);
1793
1794void cxgb4_iscsi_init(struct net_device *dev, unsigned int tag_mask,
1795 const unsigned int *pgsz_order)
1796{
1797 struct adapter *adap = netdev2adap(dev);
1798
0d804338
HS		 1799 t4_write_reg(adap, ULP_RX_ISCSI_TAGMASK_A, tag_mask);
1800 t4_write_reg(adap, ULP_RX_ISCSI_PSZ_A, HPZ0_V(pgsz_order[0]) |
1801 HPZ1_V(pgsz_order[1]) | HPZ2_V(pgsz_order[2]) |
1802 HPZ3_V(pgsz_order[3]));
b8ff05a9
DM		 1803}
1804EXPORT_SYMBOL(cxgb4_iscsi_init);
1805
3069ee9b
VP		 1806int cxgb4_flush_eq_cache(struct net_device *dev)
1807{
1808 struct adapter *adap = netdev2adap(dev);
3069ee9b 1809
736c3b94 1810 return t4_sge_ctxt_flush(adap, adap->mbox, CTXT_EGRESS);
3069ee9b
VP		 1811}
1812EXPORT_SYMBOL(cxgb4_flush_eq_cache);
1813
1814static int read_eq_indices(struct adapter *adap, u16 qid, u16 *pidx, u16 *cidx)
1815{
f061de42 1816 u32 addr = t4_read_reg(adap, SGE_DBQ_CTXT_BADDR_A) + 24 * qid + 8;
3069ee9b
VP		 1817 __be64 indices;
1818 int ret;
1819
fc5ab020
HS		 1820 spin_lock(&adap->win0_lock);
1821 ret = t4_memory_rw(adap, 0, MEM_EDC0, addr,
1822 sizeof(indices), (__be32 *)&indices,
1823 T4_MEMORY_READ);
1824 spin_unlock(&adap->win0_lock);
3069ee9b 1825 if (!ret) {
404d9e3f
VP		 1826 *cidx = (be64_to_cpu(indices) >> 25) & 0xffff;
1827 *pidx = (be64_to_cpu(indices) >> 9) & 0xffff;
3069ee9b
VP		 1828 }
1829 return ret;
1830}
1831
1832int cxgb4_sync_txq_pidx(struct net_device *dev, u16 qid, u16 pidx,
1833 u16 size)
1834{
1835 struct adapter *adap = netdev2adap(dev);
1836 u16 hw_pidx, hw_cidx;
1837 int ret;
1838
1839 ret = read_eq_indices(adap, qid, &hw_pidx, &hw_cidx);
1840 if (ret)
1841 goto out;
1842
1843 if (pidx != hw_pidx) {
1844 u16 delta;
f612b815 1845 u32 val;
3069ee9b
VP		 1846
1847 if (pidx >= hw_pidx)
1848 delta = pidx - hw_pidx;
1849 else
1850 delta = size - hw_pidx + pidx;
f612b815
HS		 1851
1852 if (is_t4(adap->params.chip))
1853 val = PIDX_V(delta);
1854 else
1855 val = PIDX_T5_V(delta);
3069ee9b 1856 wmb();
f612b815
HS		 1857 t4_write_reg(adap, MYPF_REG(SGE_PF_KDOORBELL_A),
1858 QID_V(qid) | val);
3069ee9b
VP		 1859 }
1860out:
1861 return ret;
1862}
1863EXPORT_SYMBOL(cxgb4_sync_txq_pidx);
1864
031cf476
HS		 1865int cxgb4_read_tpte(struct net_device *dev, u32 stag, __be32 *tpte)
1866{
6559a7e8 1867 u32 edc0_size, edc1_size, mc0_size, mc1_size, size;
031cf476 1868 u32 edc0_end, edc1_end, mc0_end, mc1_end;
8b4e6b3c
AV		 1869 u32 offset, memtype, memaddr;
1870 struct adapter *adap;
1871 u32 hma_size = 0;
031cf476
HS		 1872 int ret;
1873
1874 adap = netdev2adap(dev);
1875
1876 offset = ((stag >> 8) * 32) + adap->vres.stag.start;
1877
1878 /* Figure out where the offset lands in the Memory Type/Address scheme.
1879 * This code assumes that the memory is laid out starting at offset 0
1880 * with no breaks as: EDC0, EDC1, MC0, MC1. All cards have both EDC0
1881 * and EDC1. Some cards will have neither MC0 nor MC1, most cards have
1882 * MC0, and some have both MC0 and MC1.
1883 */
6559a7e8
HS		 1884 size = t4_read_reg(adap, MA_EDRAM0_BAR_A);
1885 edc0_size = EDRAM0_SIZE_G(size) << 20;
1886 size = t4_read_reg(adap, MA_EDRAM1_BAR_A);
1887 edc1_size = EDRAM1_SIZE_G(size) << 20;
1888 size = t4_read_reg(adap, MA_EXT_MEMORY0_BAR_A);
1889 mc0_size = EXT_MEM0_SIZE_G(size) << 20;
031cf476 1890
8b4e6b3c
AV		 1891 if (t4_read_reg(adap, MA_TARGET_MEM_ENABLE_A) & HMA_MUX_F) {
1892 size = t4_read_reg(adap, MA_EXT_MEMORY1_BAR_A);
1893 hma_size = EXT_MEM1_SIZE_G(size) << 20;
1894 }
031cf476
HS		 1895 edc0_end = edc0_size;
1896 edc1_end = edc0_end + edc1_size;
1897 mc0_end = edc1_end + mc0_size;
1898
1899 if (offset < edc0_end) {
1900 memtype = MEM_EDC0;
1901 memaddr = offset;
1902 } else if (offset < edc1_end) {
1903 memtype = MEM_EDC1;
1904 memaddr = offset - edc0_end;
1905 } else {
8b4e6b3c
AV		 1906 if (hma_size && (offset < (edc1_end + hma_size))) {
1907 memtype = MEM_HMA;
1908 memaddr = offset - edc1_end;
1909 } else if (offset < mc0_end) {
031cf476
HS		 1910 memtype = MEM_MC0;
1911 memaddr = offset - edc1_end;
3ccc6cf7 1912 } else if (is_t5(adap->params.chip)) {
6559a7e8
HS		 1913 size = t4_read_reg(adap, MA_EXT_MEMORY1_BAR_A);
1914 mc1_size = EXT_MEM1_SIZE_G(size) << 20;
031cf476
HS		 1915 mc1_end = mc0_end + mc1_size;
1916 if (offset < mc1_end) {
1917 memtype = MEM_MC1;
1918 memaddr = offset - mc0_end;
1919 } else {
1920 /* offset beyond the end of any memory */
1921 goto err;
1922 }
3ccc6cf7
HS		 1923 } else {
1924 /* T4/T6 only has a single memory channel */
1925 goto err;
031cf476
HS		 1926 }
1927 }
1928
1929 spin_lock(&adap->win0_lock);
1930 ret = t4_memory_rw(adap, 0, memtype, memaddr, 32, tpte, T4_MEMORY_READ);
1931 spin_unlock(&adap->win0_lock);
1932 return ret;
1933
1934err:
1935 dev_err(adap->pdev_dev, "stag %#x, offset %#x out of range\n",
1936 stag, offset);
1937 return -EINVAL;
1938}
1939EXPORT_SYMBOL(cxgb4_read_tpte);
1940
7730b4c7
HS		 1941u64 cxgb4_read_sge_timestamp(struct net_device *dev)
1942{
1943 u32 hi, lo;
1944 struct adapter *adap;
1945
1946 adap = netdev2adap(dev);
f612b815
HS		 1947 lo = t4_read_reg(adap, SGE_TIMESTAMP_LO_A);
1948 hi = TSVAL_G(t4_read_reg(adap, SGE_TIMESTAMP_HI_A));
7730b4c7
HS		 1949
1950 return ((u64)hi << 32) | (u64)lo;
1951}
1952EXPORT_SYMBOL(cxgb4_read_sge_timestamp);
1953
df64e4d3
HS		 1954int cxgb4_bar2_sge_qregs(struct net_device *dev,
1955 unsigned int qid,
1956 enum cxgb4_bar2_qtype qtype,
66cf188e 1957 int user,
df64e4d3
HS		 1958 u64 *pbar2_qoffset,
1959 unsigned int *pbar2_qid)
1960{
b2612722 1961 return t4_bar2_sge_qregs(netdev2adap(dev),
df64e4d3
HS		 1962 qid,
1963 (qtype == CXGB4_BAR2_QTYPE_EGRESS
1964 ? T4_BAR2_QTYPE_EGRESS
1965 : T4_BAR2_QTYPE_INGRESS),
66cf188e 1966 user,
df64e4d3
HS		 1967 pbar2_qoffset,
1968 pbar2_qid);
1969}
1970EXPORT_SYMBOL(cxgb4_bar2_sge_qregs);
1971
b8ff05a9
DM		 1972static struct pci_driver cxgb4_driver;
1973
1974static void check_neigh_update(struct neighbour *neigh)
1975{
1976 const struct device *parent;
1977 const struct net_device *netdev = neigh->dev;
1978
d0d7b10b 1979 if (is_vlan_dev(netdev))
b8ff05a9
DM		 1980 netdev = vlan_dev_real_dev(netdev);
1981 parent = netdev->dev.parent;
1982 if (parent && parent->driver == &cxgb4_driver.driver)
1983 t4_l2t_update(dev_get_drvdata(parent), neigh);
1984}
1985
1986static int netevent_cb(struct notifier_block *nb, unsigned long event,
1987 void *data)
1988{
1989 switch (event) {
1990 case NETEVENT_NEIGH_UPDATE:
1991 check_neigh_update(data);
1992 break;
b8ff05a9
DM		 1993 case NETEVENT_REDIRECT:
1994 default:
1995 break;
1996 }
1997 return 0;
1998}
1999
2000static bool netevent_registered;
2001static struct notifier_block cxgb4_netevent_nb = {
2002 .notifier_call = netevent_cb
2003};
2004
3069ee9b
VP		 2005static void drain_db_fifo(struct adapter *adap, int usecs)
2006{
2cc301d2 2007 u32 v1, v2, lp_count, hp_count;
3069ee9b
VP		 2008
2009 do {
f061de42
HS		 2010 v1 = t4_read_reg(adap, SGE_DBFIFO_STATUS_A);
2011 v2 = t4_read_reg(adap, SGE_DBFIFO_STATUS2_A);
d14807dd 2012 if (is_t4(adap->params.chip)) {
f061de42
HS		 2013 lp_count = LP_COUNT_G(v1);
2014 hp_count = HP_COUNT_G(v1);
2cc301d2 2015 } else {
f061de42
HS		 2016 lp_count = LP_COUNT_T5_G(v1);
2017 hp_count = HP_COUNT_T5_G(v2);
2cc301d2
SR		 2018 }
2019
2020 if (lp_count == 0 && hp_count == 0)
2021 break;
3069ee9b
VP		 2022 set_current_state(TASK_UNINTERRUPTIBLE);
2023 schedule_timeout(usecs_to_jiffies(usecs));
3069ee9b
VP		 2024 } while (1);
2025}
2026
2027static void disable_txq_db(struct sge_txq *q)
2028{
05eb2389
SW		 2029 unsigned long flags;
2030
2031 spin_lock_irqsave(&q->db_lock, flags);
3069ee9b 2032 q->db_disabled = 1;
05eb2389 2033 spin_unlock_irqrestore(&q->db_lock, flags);
3069ee9b
VP		 2034}
2035
05eb2389 2036static void enable_txq_db(struct adapter *adap, struct sge_txq *q)
3069ee9b
VP		 2037{
2038 spin_lock_irq(&q->db_lock);
05eb2389
SW		 2039 if (q->db_pidx_inc) {
2040 /* Make sure that all writes to the TX descriptors
2041 * are committed before we tell HW about them.
2042 */
2043 wmb();
f612b815
HS		 2044 t4_write_reg(adap, MYPF_REG(SGE_PF_KDOORBELL_A),
2045 QID_V(q->cntxt_id) | PIDX_V(q->db_pidx_inc));
05eb2389
SW		 2046 q->db_pidx_inc = 0;
2047 }
3069ee9b
VP		 2048 q->db_disabled = 0;
2049 spin_unlock_irq(&q->db_lock);
2050}
2051
2052static void disable_dbs(struct adapter *adap)
2053{
2054 int i;
2055
2056 for_each_ethrxq(&adap->sge, i)
2057 disable_txq_db(&adap->sge.ethtxq[i].q);
ab677ff4
HS		 2058 if (is_offload(adap)) {
2059 struct sge_uld_txq_info *txq_info =
2060 adap->sge.uld_txq_info[CXGB4_TX_OFLD];
2061
2062 if (txq_info) {
2063 for_each_ofldtxq(&adap->sge, i) {
2064 struct sge_uld_txq *txq = &txq_info->uldtxq[i];
2065
2066 disable_txq_db(&txq->q);
2067 }
2068 }
2069 }
3069ee9b
VP		 2070 for_each_port(adap, i)
2071 disable_txq_db(&adap->sge.ctrlq[i].q);
2072}
2073
2074static void enable_dbs(struct adapter *adap)
2075{
2076 int i;
2077
2078 for_each_ethrxq(&adap->sge, i)
05eb2389 2079 enable_txq_db(adap, &adap->sge.ethtxq[i].q);
ab677ff4
HS		 2080 if (is_offload(adap)) {
2081 struct sge_uld_txq_info *txq_info =
2082 adap->sge.uld_txq_info[CXGB4_TX_OFLD];
2083
2084 if (txq_info) {
2085 for_each_ofldtxq(&adap->sge, i) {
2086 struct sge_uld_txq *txq = &txq_info->uldtxq[i];
2087
2088 enable_txq_db(adap, &txq->q);
2089 }
2090 }
2091 }
3069ee9b 2092 for_each_port(adap, i)
05eb2389
SW		 2093 enable_txq_db(adap, &adap->sge.ctrlq[i].q);
2094}
2095
2096static void notify_rdma_uld(struct adapter *adap, enum cxgb4_control cmd)
2097{
0fbc81b3
HS		 2098 enum cxgb4_uld type = CXGB4_ULD_RDMA;
2099
2100 if (adap->uld && adap->uld[type].handle)
2101 adap->uld[type].control(adap->uld[type].handle, cmd);
05eb2389
SW		 2102}
2103
2104static void process_db_full(struct work_struct *work)
2105{
2106 struct adapter *adap;
2107
2108 adap = container_of(work, struct adapter, db_full_task);
2109
2110 drain_db_fifo(adap, dbfifo_drain_delay);
2111 enable_dbs(adap);
2112 notify_rdma_uld(adap, CXGB4_CONTROL_DB_EMPTY);
3ccc6cf7
HS		 2113 if (CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5)
2114 t4_set_reg_field(adap, SGE_INT_ENABLE3_A,
2115 DBFIFO_HP_INT_F | DBFIFO_LP_INT_F,
2116 DBFIFO_HP_INT_F | DBFIFO_LP_INT_F);
2117 else
2118 t4_set_reg_field(adap, SGE_INT_ENABLE3_A,
2119 DBFIFO_LP_INT_F, DBFIFO_LP_INT_F);
3069ee9b
VP		 2120}
2121
2122static void sync_txq_pidx(struct adapter *adap, struct sge_txq *q)
2123{
2124 u16 hw_pidx, hw_cidx;
2125 int ret;
2126
05eb2389 2127 spin_lock_irq(&q->db_lock);
3069ee9b
VP		 2128 ret = read_eq_indices(adap, (u16)q->cntxt_id, &hw_pidx, &hw_cidx);
2129 if (ret)
2130 goto out;
2131 if (q->db_pidx != hw_pidx) {
2132 u16 delta;
f612b815 2133 u32 val;
3069ee9b
VP		 2134
2135 if (q->db_pidx >= hw_pidx)
2136 delta = q->db_pidx - hw_pidx;
2137 else
2138 delta = q->size - hw_pidx + q->db_pidx;
f612b815
HS		 2139
2140 if (is_t4(adap->params.chip))
2141 val = PIDX_V(delta);
2142 else
2143 val = PIDX_T5_V(delta);
3069ee9b 2144 wmb();
f612b815
HS		 2145 t4_write_reg(adap, MYPF_REG(SGE_PF_KDOORBELL_A),
2146 QID_V(q->cntxt_id) | val);
3069ee9b
VP		 2147 }
2148out:
2149 q->db_disabled = 0;
05eb2389
SW		 2150 q->db_pidx_inc = 0;
2151 spin_unlock_irq(&q->db_lock);
3069ee9b
VP		 2152 if (ret)
2153 CH_WARN(adap, "DB drop recovery failed.\n");
2154}
0fbc81b3 2155
3069ee9b
VP		 2156static void recover_all_queues(struct adapter *adap)
2157{
2158 int i;
2159
2160 for_each_ethrxq(&adap->sge, i)
2161 sync_txq_pidx(adap, &adap->sge.ethtxq[i].q);
ab677ff4
HS		 2162 if (is_offload(adap)) {
2163 struct sge_uld_txq_info *txq_info =
2164 adap->sge.uld_txq_info[CXGB4_TX_OFLD];
2165 if (txq_info) {
2166 for_each_ofldtxq(&adap->sge, i) {
2167 struct sge_uld_txq *txq = &txq_info->uldtxq[i];
2168
2169 sync_txq_pidx(adap, &txq->q);
2170 }
2171 }
2172 }
3069ee9b
VP		 2173 for_each_port(adap, i)
2174 sync_txq_pidx(adap, &adap->sge.ctrlq[i].q);
2175}
2176
881806bc
VP		 2177static void process_db_drop(struct work_struct *work)
2178{
2179 struct adapter *adap;
881806bc 2180
3069ee9b 2181 adap = container_of(work, struct adapter, db_drop_task);
881806bc 2182
d14807dd 2183 if (is_t4(adap->params.chip)) {
05eb2389 2184 drain_db_fifo(adap, dbfifo_drain_delay);
2cc301d2 2185 notify_rdma_uld(adap, CXGB4_CONTROL_DB_DROP);
05eb2389 2186 drain_db_fifo(adap, dbfifo_drain_delay);
2cc301d2 2187 recover_all_queues(adap);
05eb2389 2188 drain_db_fifo(adap, dbfifo_drain_delay);
2cc301d2 2189 enable_dbs(adap);
05eb2389 2190 notify_rdma_uld(adap, CXGB4_CONTROL_DB_EMPTY);
3ccc6cf7 2191 } else if (is_t5(adap->params.chip)) {
2cc301d2
SR		 2192 u32 dropped_db = t4_read_reg(adap, 0x010ac);
2193 u16 qid = (dropped_db >> 15) & 0x1ffff;
2194 u16 pidx_inc = dropped_db & 0x1fff;
df64e4d3
HS		 2195 u64 bar2_qoffset;
2196 unsigned int bar2_qid;
2197 int ret;
2cc301d2 2198
b2612722 2199 ret = t4_bar2_sge_qregs(adap, qid, T4_BAR2_QTYPE_EGRESS,
e0456717 2200 0, &bar2_qoffset, &bar2_qid);
df64e4d3
HS		 2201 if (ret)
2202 dev_err(adap->pdev_dev, "doorbell drop recovery: "
2203 "qid=%d, pidx_inc=%d\n", qid, pidx_inc);
2204 else
f612b815 2205 writel(PIDX_T5_V(pidx_inc) | QID_V(bar2_qid),
df64e4d3 2206 adap->bar2 + bar2_qoffset + SGE_UDB_KDOORBELL);
2cc301d2
SR		 2207
2208 /* Re-enable BAR2 WC */
2209 t4_set_reg_field(adap, 0x10b0, 1<<15, 1<<15);
2210 }
2211
3ccc6cf7
HS		 2212 if (CHELSIO_CHIP_VERSION(adap->params.chip) <= CHELSIO_T5)
2213 t4_set_reg_field(adap, SGE_DOORBELL_CONTROL_A, DROPPED_DB_F, 0);
881806bc
VP		 2214}
2215
2216void t4_db_full(struct adapter *adap)
2217{
d14807dd 2218 if (is_t4(adap->params.chip)) {
05eb2389
SW		 2219 disable_dbs(adap);
2220 notify_rdma_uld(adap, CXGB4_CONTROL_DB_FULL);
f612b815
HS		 2221 t4_set_reg_field(adap, SGE_INT_ENABLE3_A,
2222 DBFIFO_HP_INT_F | DBFIFO_LP_INT_F, 0);
29aaee65 2223 queue_work(adap->workq, &adap->db_full_task);
2cc301d2 2224 }
881806bc
VP		 2225}
2226
2227void t4_db_dropped(struct adapter *adap)
2228{
05eb2389
SW		 2229 if (is_t4(adap->params.chip)) {
2230 disable_dbs(adap);
2231 notify_rdma_uld(adap, CXGB4_CONTROL_DB_FULL);
2232 }
29aaee65 2233 queue_work(adap->workq, &adap->db_drop_task);
881806bc
VP		 2234}
2235
0fbc81b3
HS		 2236void t4_register_netevent_notifier(void)
2237{
b8ff05a9
DM		 2238 if (!netevent_registered) {
2239 register_netevent_notifier(&cxgb4_netevent_nb);
2240 netevent_registered = true;
2241 }
b8ff05a9
DM		 2242}
2243
2244static void detach_ulds(struct adapter *adap)
2245{
2246 unsigned int i;
2247
2248 mutex_lock(&uld_mutex);
2249 list_del(&adap->list_node);
6a146f3a 2250
b8ff05a9 2251 for (i = 0; i < CXGB4_ULD_MAX; i++)
6a146f3a 2252 if (adap->uld && adap->uld[i].handle)
94cdb8bb
HS		 2253 adap->uld[i].state_change(adap->uld[i].handle,
2254 CXGB4_STATE_DETACH);
6a146f3a 2255
b8ff05a9
DM		 2256 if (netevent_registered && list_empty(&adapter_list)) {
2257 unregister_netevent_notifier(&cxgb4_netevent_nb);
2258 netevent_registered = false;
2259 }
2260 mutex_unlock(&uld_mutex);
2261}
2262
2263static void notify_ulds(struct adapter *adap, enum cxgb4_state new_state)
2264{
2265 unsigned int i;
2266
2267 mutex_lock(&uld_mutex);
2268 for (i = 0; i < CXGB4_ULD_MAX; i++)
94cdb8bb
HS		 2269 if (adap->uld && adap->uld[i].handle)
2270 adap->uld[i].state_change(adap->uld[i].handle,
2271 new_state);
b8ff05a9
DM		 2272 mutex_unlock(&uld_mutex);
2273}
2274
1bb60376 2275#if IS_ENABLED(CONFIG_IPV6)
b5a02f50
AB		 2276static int cxgb4_inet6addr_handler(struct notifier_block *this,
2277 unsigned long event, void *data)
01bcca68 2278{
b5a02f50
AB		 2279 struct inet6_ifaddr *ifa = data;
2280 struct net_device *event_dev = ifa->idev->dev;
2281 const struct device *parent = NULL;
2282#if IS_ENABLED(CONFIG_BONDING)
01bcca68 2283 struct adapter *adap;
b5a02f50 2284#endif
d0d7b10b 2285 if (is_vlan_dev(event_dev))
b5a02f50
AB		 2286 event_dev = vlan_dev_real_dev(event_dev);
2287#if IS_ENABLED(CONFIG_BONDING)
2288 if (event_dev->flags & IFF_MASTER) {
2289 list_for_each_entry(adap, &adapter_list, list_node) {
2290 switch (event) {
2291 case NETDEV_UP:
2292 cxgb4_clip_get(adap->port[0],
2293 (const u32 *)ifa, 1);
2294 break;
2295 case NETDEV_DOWN:
2296 cxgb4_clip_release(adap->port[0],
2297 (const u32 *)ifa, 1);
2298 break;
2299 default:
2300 break;
2301 }
2302 }
2303 return NOTIFY_OK;
2304 }
2305#endif
01bcca68 2306
b5a02f50
AB		 2307 if (event_dev)
2308 parent = event_dev->dev.parent;
01bcca68 2309
b5a02f50 2310 if (parent && parent->driver == &cxgb4_driver.driver) {
01bcca68
VP		 2311 switch (event) {
2312 case NETDEV_UP:
b5a02f50 2313 cxgb4_clip_get(event_dev, (const u32 *)ifa, 1);
01bcca68
VP		 2314 break;
2315 case NETDEV_DOWN:
b5a02f50 2316 cxgb4_clip_release(event_dev, (const u32 *)ifa, 1);
01bcca68
VP		 2317 break;
2318 default:
2319 break;
2320 }
2321 }
b5a02f50 2322 return NOTIFY_OK;
01bcca68
VP		 2323}
2324
b5a02f50 2325static bool inet6addr_registered;
01bcca68
VP		 2326static struct notifier_block cxgb4_inet6addr_notifier = {
2327 .notifier_call = cxgb4_inet6addr_handler
2328};
2329
01bcca68
VP		 2330static void update_clip(const struct adapter *adap)
2331{
2332 int i;
2333 struct net_device *dev;
2334 int ret;
2335
2336 rcu_read_lock();
2337
2338 for (i = 0; i < MAX_NPORTS; i++) {
2339 dev = adap->port[i];
2340 ret = 0;
2341
2342 if (dev)
b5a02f50 2343 ret = cxgb4_update_root_dev_clip(dev);
01bcca68
VP		 2344
2345 if (ret < 0)
2346 break;
2347 }
2348 rcu_read_unlock();
2349}
1bb60376 2350#endif /* IS_ENABLED(CONFIG_IPV6) */
01bcca68 2351
b8ff05a9
DM		 2352/**
2353 * cxgb_up - enable the adapter
2354 * @adap: adapter being enabled
2355 *
2356 * Called when the first port is enabled, this function performs the
2357 * actions necessary to make an adapter operational, such as completing
2358 * the initialization of HW modules, and enabling interrupts.
2359 *
2360 * Must be called with the rtnl lock held.
2361 */
2362static int cxgb_up(struct adapter *adap)
2363{
aaefae9b 2364 int err;
b8ff05a9 2365
91060381 2366 mutex_lock(&uld_mutex);
aaefae9b
DM		 2367 err = setup_sge_queues(adap);
2368 if (err)
91060381 2369 goto rel_lock;
aaefae9b
DM		 2370 err = setup_rss(adap);
2371 if (err)
2372 goto freeq;
b8ff05a9 2373
80f61f19 2374 if (adap->flags & CXGB4_USING_MSIX) {
aaefae9b 2375 name_msix_vecs(adap);
b8ff05a9
DM		 2376 err = request_irq(adap->msix_info[0].vec, t4_nondata_intr, 0,
2377 adap->msix_info[0].desc, adap);
2378 if (err)
2379 goto irq_err;
b8ff05a9
DM		 2380 err = request_msix_queue_irqs(adap);
2381 if (err) {
2382 free_irq(adap->msix_info[0].vec, adap);
2383 goto irq_err;
2384 }
2385 } else {
2386 err = request_irq(adap->pdev->irq, t4_intr_handler(adap),
80f61f19
AV		 2387 (adap->flags & CXGB4_USING_MSI) ? 0
2388 : IRQF_SHARED,
b1a3c2b6 2389 adap->port[0]->name, adap);
b8ff05a9
DM		 2390 if (err)
2391 goto irq_err;
2392 }
e7519f99 2393
b8ff05a9
DM		 2394 enable_rx(adap);
2395 t4_sge_start(adap);
2396 t4_intr_enable(adap);
80f61f19 2397 adap->flags |= CXGB4_FULL_INIT_DONE;
e7519f99
GG		 2398 mutex_unlock(&uld_mutex);
2399
b8ff05a9 2400 notify_ulds(adap, CXGB4_STATE_UP);
1bb60376 2401#if IS_ENABLED(CONFIG_IPV6)
01bcca68 2402 update_clip(adap);
1bb60376 2403#endif
b8ff05a9 2404 return err;
91060381 2405
b8ff05a9
DM		 2406 irq_err:
2407 dev_err(adap->pdev_dev, "request_irq failed, err %d\n", err);
aaefae9b
DM		 2408 freeq:
2409 t4_free_sge_resources(adap);
91060381
RR		 2410 rel_lock:
2411 mutex_unlock(&uld_mutex);
2412 return err;
b8ff05a9
DM		 2413}
2414
2415static void cxgb_down(struct adapter *adapter)
2416{
b8ff05a9 2417 cancel_work_sync(&adapter->tid_release_task);
881806bc
VP		 2418 cancel_work_sync(&adapter->db_full_task);
2419 cancel_work_sync(&adapter->db_drop_task);
b8ff05a9 2420 adapter->tid_release_task_busy = false;
204dc3c0 2421 adapter->tid_release_head = NULL;
b8ff05a9 2422
aaefae9b
DM		 2423 t4_sge_stop(adapter);
2424 t4_free_sge_resources(adapter);
2a8d84bf 2425
80f61f19 2426 adapter->flags &= ~CXGB4_FULL_INIT_DONE;
b8ff05a9
DM		 2427}
2428
2429/*
2430 * net_device operations
2431 */
2432static int cxgb_open(struct net_device *dev)
2433{
2434 int err;
2435 struct port_info *pi = netdev_priv(dev);
2436 struct adapter *adapter = pi->adapter;
2437
6a3c869a
DM		 2438 netif_carrier_off(dev);
2439
80f61f19 2440 if (!(adapter->flags & CXGB4_FULL_INIT_DONE)) {
aaefae9b
DM		 2441 err = cxgb_up(adapter);
2442 if (err < 0)
2443 return err;
2444 }
b8ff05a9 2445
2061ec3f
GG		 2446 /* It's possible that the basic port information could have
2447 * changed since we first read it.
2448 */
2449 err = t4_update_port_info(pi);
2450 if (err < 0)
2451 return err;
2452
f68707b8
DM		 2453 err = link_start(dev);
2454 if (!err)
2455 netif_tx_start_all_queues(dev);
2456 return err;
b8ff05a9
DM		 2457}
2458
2459static int cxgb_close(struct net_device *dev)
2460{
b8ff05a9
DM		 2461 struct port_info *pi = netdev_priv(dev);
2462 struct adapter *adapter = pi->adapter;
ba581f77 2463 int ret;
b8ff05a9
DM		 2464
2465 netif_tx_stop_all_queues(dev);
2466 netif_carrier_off(dev);
e2f4f4e9
AV		 2467 ret = t4_enable_pi_params(adapter, adapter->pf, pi,
2468 false, false, false);
ba581f77
GG		 2469#ifdef CONFIG_CHELSIO_T4_DCB
2470 cxgb4_dcb_reset(dev);
2471 dcb_tx_queue_prio_enable(dev, false);
2472#endif
2473 return ret;
b8ff05a9
DM		 2474}
2475
dca4faeb 2476int cxgb4_create_server_filter(const struct net_device *dev, unsigned int stid,
793dad94
VP		 2477 __be32 sip, __be16 sport, __be16 vlan,
2478 unsigned int queue, unsigned char port, unsigned char mask)
dca4faeb
VP		 2479{
2480 int ret;
2481 struct filter_entry *f;
2482 struct adapter *adap;
2483 int i;
2484 u8 *val;
2485
2486 adap = netdev2adap(dev);
2487
1cab775c 2488 /* Adjust stid to correct filter index */
470c60c4 2489 stid -= adap->tids.sftid_base;
1cab775c
VP		 2490 stid += adap->tids.nftids;
2491
dca4faeb
VP		 2492 /* Check to make sure the filter requested is writable ...
2493 */
2494 f = &adap->tids.ftid_tab[stid];
2495 ret = writable_filter(f);
2496 if (ret)
2497 return ret;
2498
2499 /* Clear out any old resources being used by the filter before
2500 * we start constructing the new filter.
2501 */
2502 if (f->valid)
2503 clear_filter(adap, f);
2504
2505 /* Clear out filter specifications */
2506 memset(&f->fs, 0, sizeof(struct ch_filter_specification));
2507 f->fs.val.lport = cpu_to_be16(sport);
2508 f->fs.mask.lport = ~0;
2509 val = (u8 *)&sip;
793dad94 2510 if ((val[0] | val[1] | val[2] | val[3]) != 0) {
dca4faeb
VP		 2511 for (i = 0; i < 4; i++) {
2512 f->fs.val.lip[i] = val[i];
2513 f->fs.mask.lip[i] = ~0;
2514 }
0d804338 2515 if (adap->params.tp.vlan_pri_map & PORT_F) {
793dad94
VP		 2516 f->fs.val.iport = port;
2517 f->fs.mask.iport = mask;
2518 }
2519 }
dca4faeb 2520
0d804338 2521 if (adap->params.tp.vlan_pri_map & PROTOCOL_F) {
7c89e555
KS		 2522 f->fs.val.proto = IPPROTO_TCP;
2523 f->fs.mask.proto = ~0;
2524 }
2525
dca4faeb
VP		 2526 f->fs.dirsteer = 1;
2527 f->fs.iq = queue;
2528 /* Mark filter as locked */
2529 f->locked = 1;
2530 f->fs.rpttid = 1;
2531
6b254afd
GG		 2532 /* Save the actual tid. We need this to get the corresponding
2533 * filter entry structure in filter_rpl.
2534 */
2535 f->tid = stid + adap->tids.ftid_base;
dca4faeb
VP		 2536 ret = set_filter_wr(adap, stid);
2537 if (ret) {
2538 clear_filter(adap, f);
2539 return ret;
2540 }
2541
2542 return 0;
2543}
2544EXPORT_SYMBOL(cxgb4_create_server_filter);
2545
2546int cxgb4_remove_server_filter(const struct net_device *dev, unsigned int stid,
2547 unsigned int queue, bool ipv6)
2548{
dca4faeb
VP		 2549 struct filter_entry *f;
2550 struct adapter *adap;
2551
2552 adap = netdev2adap(dev);
1cab775c
VP		 2553
2554 /* Adjust stid to correct filter index */
470c60c4 2555 stid -= adap->tids.sftid_base;
1cab775c
VP		 2556 stid += adap->tids.nftids;
2557
dca4faeb
VP		 2558 f = &adap->tids.ftid_tab[stid];
2559 /* Unlock the filter */
2560 f->locked = 0;
2561
8c14846d 2562 return delete_filter(adap, stid);
dca4faeb
VP		 2563}
2564EXPORT_SYMBOL(cxgb4_remove_server_filter);
2565
bc1f4470 2566static void cxgb_get_stats(struct net_device *dev,
2567 struct rtnl_link_stats64 *ns)
b8ff05a9
DM		 2568{
2569 struct port_stats stats;
2570 struct port_info *p = netdev_priv(dev);
2571 struct adapter *adapter = p->adapter;
b8ff05a9 2572
9fe6cb58
GS		 2573 /* Block retrieving statistics during EEH error
2574 * recovery. Otherwise, the recovery might fail
2575 * and the PCI device will be removed permanently
2576 */
b8ff05a9 2577 spin_lock(&adapter->stats_lock);
9fe6cb58
GS		 2578 if (!netif_device_present(dev)) {
2579 spin_unlock(&adapter->stats_lock);
bc1f4470 2580 return;
9fe6cb58 2581 }
a4cfd929
HS		 2582 t4_get_port_stats_offset(adapter, p->tx_chan, &stats,
2583 &p->stats_base);
b8ff05a9
DM		 2584 spin_unlock(&adapter->stats_lock);
2585
2586 ns->tx_bytes = stats.tx_octets;
2587 ns->tx_packets = stats.tx_frames;
2588 ns->rx_bytes = stats.rx_octets;
2589 ns->rx_packets = stats.rx_frames;
2590 ns->multicast = stats.rx_mcast_frames;
2591
2592 /* detailed rx_errors */
2593 ns->rx_length_errors = stats.rx_jabber + stats.rx_too_long +
2594 stats.rx_runt;
2595 ns->rx_over_errors = 0;
2596 ns->rx_crc_errors = stats.rx_fcs_err;
2597 ns->rx_frame_errors = stats.rx_symbol_err;
b93f79be 2598 ns->rx_dropped = stats.rx_ovflow0 + stats.rx_ovflow1 +
b8ff05a9
DM		 2599 stats.rx_ovflow2 + stats.rx_ovflow3 +
2600 stats.rx_trunc0 + stats.rx_trunc1 +
2601 stats.rx_trunc2 + stats.rx_trunc3;
2602 ns->rx_missed_errors = 0;
2603
2604 /* detailed tx_errors */
2605 ns->tx_aborted_errors = 0;
2606 ns->tx_carrier_errors = 0;
2607 ns->tx_fifo_errors = 0;
2608 ns->tx_heartbeat_errors = 0;
2609 ns->tx_window_errors = 0;
2610
2611 ns->tx_errors = stats.tx_error_frames;
2612 ns->rx_errors = stats.rx_symbol_err + stats.rx_fcs_err +
2613 ns->rx_length_errors + stats.rx_len_err + ns->rx_fifo_errors;
b8ff05a9
DM		 2614}
2615
2616static int cxgb_ioctl(struct net_device *dev, struct ifreq *req, int cmd)
2617{
060e0c75 2618 unsigned int mbox;
b8ff05a9
DM		 2619 int ret = 0, prtad, devad;
2620 struct port_info *pi = netdev_priv(dev);
a4569504 2621 struct adapter *adapter = pi->adapter;
b8ff05a9
DM		 2622 struct mii_ioctl_data *data = (struct mii_ioctl_data *)&req->ifr_data;
2623
2624 switch (cmd) {
2625 case SIOCGMIIPHY:
2626 if (pi->mdio_addr < 0)
2627 return -EOPNOTSUPP;
2628 data->phy_id = pi->mdio_addr;
2629 break;
2630 case SIOCGMIIREG:
2631 case SIOCSMIIREG:
2632 if (mdio_phy_id_is_c45(data->phy_id)) {
2633 prtad = mdio_phy_id_prtad(data->phy_id);
2634 devad = mdio_phy_id_devad(data->phy_id);
2635 } else if (data->phy_id < 32) {
2636 prtad = data->phy_id;
2637 devad = 0;
2638 data->reg_num &= 0x1f;
2639 } else
2640 return -EINVAL;
2641
b2612722 2642 mbox = pi->adapter->pf;
b8ff05a9 2643 if (cmd == SIOCGMIIREG)
060e0c75 2644 ret = t4_mdio_rd(pi->adapter, mbox, prtad, devad,
b8ff05a9
DM		 2645 data->reg_num, &data->val_out);
2646 else
060e0c75 2647 ret = t4_mdio_wr(pi->adapter, mbox, prtad, devad,
b8ff05a9
DM		 2648 data->reg_num, data->val_in);
2649 break;
5e2a5ebc
HS		 2650 case SIOCGHWTSTAMP:
2651 return copy_to_user(req->ifr_data, &pi->tstamp_config,
2652 sizeof(pi->tstamp_config)) ?
2653 -EFAULT : 0;
2654 case SIOCSHWTSTAMP:
2655 if (copy_from_user(&pi->tstamp_config, req->ifr_data,
2656 sizeof(pi->tstamp_config)))
2657 return -EFAULT;
2658
a4569504
AG		 2659 if (!is_t4(adapter->params.chip)) {
2660 switch (pi->tstamp_config.tx_type) {
2661 case HWTSTAMP_TX_OFF:
2662 case HWTSTAMP_TX_ON:
2663 break;
2664 default:
2665 return -ERANGE;
2666 }
2667
2668 switch (pi->tstamp_config.rx_filter) {
2669 case HWTSTAMP_FILTER_NONE:
2670 pi->rxtstamp = false;
2671 break;
2672 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2673 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2674 cxgb4_ptprx_timestamping(pi, pi->port_id,
2675 PTP_TS_L4);
2676 break;
2677 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2678 cxgb4_ptprx_timestamping(pi, pi->port_id,
2679 PTP_TS_L2_L4);
2680 break;
2681 case HWTSTAMP_FILTER_ALL:
2682 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2683 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2684 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2685 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2686 pi->rxtstamp = true;
2687 break;
2688 default:
2689 pi->tstamp_config.rx_filter =
2690 HWTSTAMP_FILTER_NONE;
2691 return -ERANGE;
2692 }
2693
2694 if ((pi->tstamp_config.tx_type == HWTSTAMP_TX_OFF) &&
2695 (pi->tstamp_config.rx_filter ==
2696 HWTSTAMP_FILTER_NONE)) {
2697 if (cxgb4_ptp_txtype(adapter, pi->port_id) >= 0)
2698 pi->ptp_enable = false;
2699 }
2700
2701 if (pi->tstamp_config.rx_filter !=
2702 HWTSTAMP_FILTER_NONE) {
2703 if (cxgb4_ptp_redirect_rx_packet(adapter,
2704 pi) >= 0)
2705 pi->ptp_enable = true;
2706 }
2707 } else {
2708 /* For T4 Adapters */
2709 switch (pi->tstamp_config.rx_filter) {
2710 case HWTSTAMP_FILTER_NONE:
5e2a5ebc
HS		 2711 pi->rxtstamp = false;
2712 break;
a4569504 2713 case HWTSTAMP_FILTER_ALL:
5e2a5ebc
HS		 2714 pi->rxtstamp = true;
2715 break;
a4569504
AG		 2716 default:
2717 pi->tstamp_config.rx_filter =
2718 HWTSTAMP_FILTER_NONE;
5e2a5ebc 2719 return -ERANGE;
a4569504 2720 }
5e2a5ebc 2721 }
5e2a5ebc
HS		 2722 return copy_to_user(req->ifr_data, &pi->tstamp_config,
2723 sizeof(pi->tstamp_config)) ?
2724 -EFAULT : 0;
b8ff05a9
DM		 2725 default:
2726 return -EOPNOTSUPP;
2727 }
2728 return ret;
2729}
2730
2731static void cxgb_set_rxmode(struct net_device *dev)
2732{
2733 /* unfortunately we can't return errors to the stack */
2734 set_rxmode(dev, -1, false);
2735}
2736
2737static int cxgb_change_mtu(struct net_device *dev, int new_mtu)
2738{
2739 int ret;
2740 struct port_info *pi = netdev_priv(dev);
2741
b2612722 2742 ret = t4_set_rxmode(pi->adapter, pi->adapter->pf, pi->viid, new_mtu, -1,
060e0c75 2743 -1, -1, -1, true);
b8ff05a9
DM		 2744 if (!ret)
2745 dev->mtu = new_mtu;
2746 return ret;
2747}
2748
858aa65c 2749#ifdef CONFIG_PCI_IOV
baf50868 2750static int cxgb4_mgmt_open(struct net_device *dev)
e7b48a32
HS		 2751{
2752 /* Turn carrier off since we don't have to transmit anything on this
2753 * interface.
2754 */
2755 netif_carrier_off(dev);
2756 return 0;
2757}
2758
661dbeb9 2759/* Fill MAC address that will be assigned by the FW */
baf50868 2760static void cxgb4_mgmt_fill_vf_station_mac_addr(struct adapter *adap)
661dbeb9 2761{
661dbeb9 2762 u8 hw_addr[ETH_ALEN], macaddr[ETH_ALEN];
baf50868
GG		 2763 unsigned int i, vf, nvfs;
2764 u16 a, b;
661dbeb9
HS		 2765 int err;
2766 u8 *na;
661dbeb9 2767
baf50868
GG		 2768 adap->params.pci.vpd_cap_addr = pci_find_capability(adap->pdev,
2769 PCI_CAP_ID_VPD);
661dbeb9 2770 err = t4_get_raw_vpd_params(adap, &adap->params.vpd);
baf50868
GG		 2771 if (err)
2772 return;
2773
2774 na = adap->params.vpd.na;
2775 for (i = 0; i < ETH_ALEN; i++)
2776 hw_addr[i] = (hex2val(na[2 * i + 0]) * 16 +
2777 hex2val(na[2 * i + 1]));
2778
2779 a = (hw_addr[0] << 8) | hw_addr[1];
2780 b = (hw_addr[1] << 8) | hw_addr[2];
2781 a ^= b;
2782 a |= 0x0200; /* locally assigned Ethernet MAC address */
2783 a &= ~0x0100; /* not a multicast Ethernet MAC address */
2784 macaddr[0] = a >> 8;
2785 macaddr[1] = a & 0xff;
2786
2787 for (i = 2; i < 5; i++)
2788 macaddr[i] = hw_addr[i + 1];
2789
2790 for (vf = 0, nvfs = pci_sriov_get_totalvfs(adap->pdev);
2791 vf < nvfs; vf++) {
1b974aa4 2792 macaddr[5] = adap->pf * nvfs + vf;
baf50868 2793 ether_addr_copy(adap->vfinfo[vf].vf_mac_addr, macaddr);
661dbeb9
HS		 2794 }
2795}
2796
baf50868 2797static int cxgb4_mgmt_set_vf_mac(struct net_device *dev, int vf, u8 *mac)
858aa65c
HS		 2798{
2799 struct port_info *pi = netdev_priv(dev);
2800 struct adapter *adap = pi->adapter;
661dbeb9 2801 int ret;
858aa65c
HS		 2802
2803 /* verify MAC addr is valid */
2804 if (!is_valid_ether_addr(mac)) {
2805 dev_err(pi->adapter->pdev_dev,
2806 "Invalid Ethernet address %pM for VF %d\n",
2807 mac, vf);
2808 return -EINVAL;
2809 }
2810
2811 dev_info(pi->adapter->pdev_dev,
2812 "Setting MAC %pM on VF %d\n", mac, vf);
661dbeb9
HS		 2813 ret = t4_set_vf_mac_acl(adap, vf + 1, 1, mac);
2814 if (!ret)
2815 ether_addr_copy(adap->vfinfo[vf].vf_mac_addr, mac);
2816 return ret;
2817}
2818
baf50868
GG		 2819static int cxgb4_mgmt_get_vf_config(struct net_device *dev,
2820 int vf, struct ifla_vf_info *ivi)
661dbeb9
HS		 2821{
2822 struct port_info *pi = netdev_priv(dev);
2823 struct adapter *adap = pi->adapter;
bd79acee 2824 struct vf_info *vfinfo;
661dbeb9
HS		 2825
2826 if (vf >= adap->num_vfs)
2827 return -EINVAL;
bd79acee
AV		 2828 vfinfo = &adap->vfinfo[vf];
2829
661dbeb9 2830 ivi->vf = vf;
bd79acee 2831 ivi->max_tx_rate = vfinfo->tx_rate;
8ea4fae9 2832 ivi->min_tx_rate = 0;
bd79acee
AV		 2833 ether_addr_copy(ivi->mac, vfinfo->vf_mac_addr);
2834 ivi->vlan = vfinfo->vlan;
8b965f3f 2835 ivi->linkstate = vfinfo->link_state;
661dbeb9 2836 return 0;
858aa65c 2837}
96fe11f2 2838
baf50868
GG		 2839static int cxgb4_mgmt_get_phys_port_id(struct net_device *dev,
2840 struct netdev_phys_item_id *ppid)
96fe11f2
GG		 2841{
2842 struct port_info *pi = netdev_priv(dev);
2843 unsigned int phy_port_id;
2844
2845 phy_port_id = pi->adapter->adap_idx * 10 + pi->port_id;
2846 ppid->id_len = sizeof(phy_port_id);
2847 memcpy(ppid->id, &phy_port_id, ppid->id_len);
2848 return 0;
2849}
2850
baf50868
GG		 2851static int cxgb4_mgmt_set_vf_rate(struct net_device *dev, int vf,
2852 int min_tx_rate, int max_tx_rate)
8ea4fae9
GG		 2853{
2854 struct port_info *pi = netdev_priv(dev);
2855 struct adapter *adap = pi->adapter;
c3168cab 2856 unsigned int link_ok, speed, mtu;
8ea4fae9
GG		 2857 u32 fw_pfvf, fw_class;
2858 int class_id = vf;
c3168cab 2859 int ret;
8ea4fae9
GG		 2860 u16 pktsize;
2861
2862 if (vf >= adap->num_vfs)
2863 return -EINVAL;
2864
2865 if (min_tx_rate) {
2866 dev_err(adap->pdev_dev,
2867 "Min tx rate (%d) (> 0) for VF %d is Invalid.\n",
2868 min_tx_rate, vf);
2869 return -EINVAL;
2870 }
c3168cab 2871
b5e281ab
GG		 2872 if (max_tx_rate == 0) {
2873 /* unbind VF to to any Traffic Class */
2874 fw_pfvf =
2875 (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF) |
2876 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_SCHEDCLASS_ETH));
2877 fw_class = 0xffffffff;
2878 ret = t4_set_params(adap, adap->mbox, adap->pf, vf + 1, 1,
2879 &fw_pfvf, &fw_class);
2880 if (ret) {
2881 dev_err(adap->pdev_dev,
2882 "Err %d in unbinding PF %d VF %d from TX Rate Limiting\n",
2883 ret, adap->pf, vf);
2884 return -EINVAL;
2885 }
2886 dev_info(adap->pdev_dev,
2887 "PF %d VF %d is unbound from TX Rate Limiting\n",
2888 adap->pf, vf);
2889 adap->vfinfo[vf].tx_rate = 0;
2890 return 0;
2891 }
2892
c3168cab 2893 ret = t4_get_link_params(pi, &link_ok, &speed, &mtu);
8ea4fae9
GG		 2894 if (ret != FW_SUCCESS) {
2895 dev_err(adap->pdev_dev,
c3168cab 2896 "Failed to get link information for VF %d\n", vf);
8ea4fae9
GG		 2897 return -EINVAL;
2898 }
c3168cab 2899
8ea4fae9
GG		 2900 if (!link_ok) {
2901 dev_err(adap->pdev_dev, "Link down for VF %d\n", vf);
2902 return -EINVAL;
2903 }
8ea4fae9
GG		 2904
2905 if (max_tx_rate > speed) {
2906 dev_err(adap->pdev_dev,
2907 "Max tx rate %d for VF %d can't be > link-speed %u",
2908 max_tx_rate, vf, speed);
2909 return -EINVAL;
2910 }
c3168cab
GG		 2911
2912 pktsize = mtu;
8ea4fae9
GG		 2913 /* subtract ethhdr size and 4 bytes crc since, f/w appends it */
2914 pktsize = pktsize - sizeof(struct ethhdr) - 4;
2915 /* subtract ipv4 hdr size, tcp hdr size to get typical IPv4 MSS size */
2916 pktsize = pktsize - sizeof(struct iphdr) - sizeof(struct tcphdr);
2917 /* configure Traffic Class for rate-limiting */
2918 ret = t4_sched_params(adap, SCHED_CLASS_TYPE_PACKET,
2919 SCHED_CLASS_LEVEL_CL_RL,
2920 SCHED_CLASS_MODE_CLASS,
2921 SCHED_CLASS_RATEUNIT_BITS,
2922 SCHED_CLASS_RATEMODE_ABS,
c3168cab 2923 pi->tx_chan, class_id, 0,
8ea4fae9
GG		 2924 max_tx_rate * 1000, 0, pktsize);
2925 if (ret) {
2926 dev_err(adap->pdev_dev, "Err %d for Traffic Class config\n",
2927 ret);
2928 return -EINVAL;
2929 }
2930 dev_info(adap->pdev_dev,
2931 "Class %d with MSS %u configured with rate %u\n",
2932 class_id, pktsize, max_tx_rate);
2933
2934 /* bind VF to configured Traffic Class */
2935 fw_pfvf = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF) |
2936 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_SCHEDCLASS_ETH));
2937 fw_class = class_id;
2938 ret = t4_set_params(adap, adap->mbox, adap->pf, vf + 1, 1, &fw_pfvf,
2939 &fw_class);
2940 if (ret) {
2941 dev_err(adap->pdev_dev,
b5e281ab
GG		 2942 "Err %d in binding PF %d VF %d to Traffic Class %d\n",
2943 ret, adap->pf, vf, class_id);
8ea4fae9
GG		 2944 return -EINVAL;
2945 }
2946 dev_info(adap->pdev_dev, "PF %d VF %d is bound to Class %d\n",
2947 adap->pf, vf, class_id);
2948 adap->vfinfo[vf].tx_rate = max_tx_rate;
2949 return 0;
2950}
2951
9d5fd927
GG		 2952static int cxgb4_mgmt_set_vf_vlan(struct net_device *dev, int vf,
2953 u16 vlan, u8 qos, __be16 vlan_proto)
2954{
2955 struct port_info *pi = netdev_priv(dev);
2956 struct adapter *adap = pi->adapter;
2957 int ret;
2958
2959 if (vf >= adap->num_vfs || vlan > 4095 || qos > 7)
2960 return -EINVAL;
2961
2962 if (vlan_proto != htons(ETH_P_8021Q) || qos != 0)
2963 return -EPROTONOSUPPORT;
2964
2965 ret = t4_set_vlan_acl(adap, adap->mbox, vf + 1, vlan);
2966 if (!ret) {
2967 adap->vfinfo[vf].vlan = vlan;
2968 return 0;
2969 }
2970
2971 dev_err(adap->pdev_dev, "Err %d %s VLAN ACL for PF/VF %d/%d\n",
2972 ret, (vlan ? "setting" : "clearing"), adap->pf, vf);
2973 return ret;
2974}
8b965f3f
AV		 2975
2976static int cxgb4_mgmt_set_vf_link_state(struct net_device *dev, int vf,
2977 int link)
2978{
2979 struct port_info *pi = netdev_priv(dev);
2980 struct adapter *adap = pi->adapter;
2981 u32 param, val;
2982 int ret = 0;
2983
2984 if (vf >= adap->num_vfs)
2985 return -EINVAL;
2986
2987 switch (link) {
2988 case IFLA_VF_LINK_STATE_AUTO:
2989 val = FW_VF_LINK_STATE_AUTO;
2990 break;
2991
2992 case IFLA_VF_LINK_STATE_ENABLE:
2993 val = FW_VF_LINK_STATE_ENABLE;
2994 break;
2995
2996 case IFLA_VF_LINK_STATE_DISABLE:
2997 val = FW_VF_LINK_STATE_DISABLE;
2998 break;
2999
3000 default:
3001 return -EINVAL;
3002 }
3003
3004 param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF) |
3005 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_LINK_STATE));
3006 ret = t4_set_params(adap, adap->mbox, adap->pf, vf + 1, 1,
3007 &param, &val);
3008 if (ret) {
3009 dev_err(adap->pdev_dev,
3010 "Error %d in setting PF %d VF %d link state\n",
3011 ret, adap->pf, vf);
3012 return -EINVAL;
3013 }
3014
3015 adap->vfinfo[vf].link_state = link;
3016 return ret;
3017}
9d5fd927 3018#endif /* CONFIG_PCI_IOV */
858aa65c 3019
b8ff05a9
DM		 3020static int cxgb_set_mac_addr(struct net_device *dev, void *p)
3021{
3022 int ret;
3023 struct sockaddr *addr = p;
3024 struct port_info *pi = netdev_priv(dev);
3025
3026 if (!is_valid_ether_addr(addr->sa_data))
504f9b5a 3027 return -EADDRNOTAVAIL;
b8ff05a9 3028
2f0b9406
RR		 3029 ret = cxgb4_update_mac_filt(pi, pi->viid, &pi->xact_addr_filt,
3030 addr->sa_data, true, &pi->smt_idx);
b8ff05a9
DM		 3031 if (ret < 0)
3032 return ret;
3033
3034 memcpy(dev->dev_addr, addr->sa_data, dev->addr_len);
3035 pi->xact_addr_filt = ret;
3036 return 0;
3037}
3038
b8ff05a9
DM		 3039#ifdef CONFIG_NET_POLL_CONTROLLER
3040static void cxgb_netpoll(struct net_device *dev)
3041{
3042 struct port_info *pi = netdev_priv(dev);
3043 struct adapter *adap = pi->adapter;
3044
80f61f19 3045 if (adap->flags & CXGB4_USING_MSIX) {
b8ff05a9
DM		 3046 int i;
3047 struct sge_eth_rxq *rx = &adap->sge.ethrxq[pi->first_qset];
3048
3049 for (i = pi->nqsets; i; i--, rx++)
3050 t4_sge_intr_msix(0, &rx->rspq);
3051 } else
3052 t4_intr_handler(adap)(0, adap);
3053}
3054#endif
3055
10a2604e
RL		 3056static int cxgb_set_tx_maxrate(struct net_device *dev, int index, u32 rate)
3057{
3058 struct port_info *pi = netdev_priv(dev);
3059 struct adapter *adap = pi->adapter;
3060 struct sched_class *e;
3061 struct ch_sched_params p;
3062 struct ch_sched_queue qe;
3063 u32 req_rate;
3064 int err = 0;
3065
3066 if (!can_sched(dev))
3067 return -ENOTSUPP;
3068
3069 if (index < 0 || index > pi->nqsets - 1)
3070 return -EINVAL;
3071
80f61f19 3072 if (!(adap->flags & CXGB4_FULL_INIT_DONE)) {
10a2604e
RL		 3073 dev_err(adap->pdev_dev,
3074 "Failed to rate limit on queue %d. Link Down?\n",
3075 index);
3076 return -EINVAL;
3077 }
3078
3079 /* Convert from Mbps to Kbps */
b3c594ab 3080 req_rate = rate * 1000;
10a2604e 3081
d185efc1 3082 /* Max rate is 100 Gbps */
b3c594ab 3083 if (req_rate > SCHED_MAX_RATE_KBPS) {
10a2604e 3084 dev_err(adap->pdev_dev,
d185efc1 3085 "Invalid rate %u Mbps, Max rate is %u Mbps\n",
b3c594ab 3086 rate, SCHED_MAX_RATE_KBPS / 1000);
10a2604e
RL		 3087 return -ERANGE;
3088 }
3089
3090 /* First unbind the queue from any existing class */
3091 memset(&qe, 0, sizeof(qe));
3092 qe.queue = index;
3093 qe.class = SCHED_CLS_NONE;
3094
3095 err = cxgb4_sched_class_unbind(dev, (void *)(&qe), SCHED_QUEUE);
3096 if (err) {
3097 dev_err(adap->pdev_dev,
3098 "Unbinding Queue %d on port %d fail. Err: %d\n",
3099 index, pi->port_id, err);
3100 return err;
3101 }
3102
3103 /* Queue already unbound */
3104 if (!req_rate)
3105 return 0;
3106
3107 /* Fetch any available unused or matching scheduling class */
3108 memset(&p, 0, sizeof(p));
3109 p.type = SCHED_CLASS_TYPE_PACKET;
3110 p.u.params.level = SCHED_CLASS_LEVEL_CL_RL;
3111 p.u.params.mode = SCHED_CLASS_MODE_CLASS;
3112 p.u.params.rateunit = SCHED_CLASS_RATEUNIT_BITS;
3113 p.u.params.ratemode = SCHED_CLASS_RATEMODE_ABS;
3114 p.u.params.channel = pi->tx_chan;
3115 p.u.params.class = SCHED_CLS_NONE;
3116 p.u.params.minrate = 0;
3117 p.u.params.maxrate = req_rate;
3118 p.u.params.weight = 0;
3119 p.u.params.pktsize = dev->mtu;
3120
3121 e = cxgb4_sched_class_alloc(dev, &p);
3122 if (!e)
3123 return -ENOMEM;
3124
3125 /* Bind the queue to a scheduling class */
3126 memset(&qe, 0, sizeof(qe));
3127 qe.queue = index;
3128 qe.class = e->idx;
3129
3130 err = cxgb4_sched_class_bind(dev, (void *)(&qe), SCHED_QUEUE);
3131 if (err)
3132 dev_err(adap->pdev_dev,
3133 "Queue rate limiting failed. Err: %d\n", err);
3134 return err;
3135}
3136
6a345b3d
KS		 3137static int cxgb_setup_tc_flower(struct net_device *dev,
3138 struct tc_cls_flower_offload *cls_flower)
3139{
6a345b3d
KS		 3140 switch (cls_flower->command) {
3141 case TC_CLSFLOWER_REPLACE:
3142 return cxgb4_tc_flower_replace(dev, cls_flower);
3143 case TC_CLSFLOWER_DESTROY:
3144 return cxgb4_tc_flower_destroy(dev, cls_flower);
3145 case TC_CLSFLOWER_STATS:
3146 return cxgb4_tc_flower_stats(dev, cls_flower);
3147 default:
3148 return -EOPNOTSUPP;
3149 }
3150}
3151
f7323043 3152static int cxgb_setup_tc_cls_u32(struct net_device *dev,
f7323043
JP		 3153 struct tc_cls_u32_offload *cls_u32)
3154{
f7323043
JP		 3155 switch (cls_u32->command) {
3156 case TC_CLSU32_NEW_KNODE:
3157 case TC_CLSU32_REPLACE_KNODE:
5fd9fc4e 3158 return cxgb4_config_knode(dev, cls_u32);
f7323043 3159 case TC_CLSU32_DELETE_KNODE:
5fd9fc4e 3160 return cxgb4_delete_knode(dev, cls_u32);
f7323043
JP		 3161 default:
3162 return -EOPNOTSUPP;
3163 }
3164}
3165
cd019e91
JP		 3166static int cxgb_setup_tc_block_cb(enum tc_setup_type type, void *type_data,
3167 void *cb_priv)
d8931847 3168{
cd019e91 3169 struct net_device *dev = cb_priv;
d8931847
RL		 3170 struct port_info *pi = netdev2pinfo(dev);
3171 struct adapter *adap = netdev2adap(dev);
3172
80f61f19 3173 if (!(adap->flags & CXGB4_FULL_INIT_DONE)) {
d8931847
RL		 3174 dev_err(adap->pdev_dev,
3175 "Failed to setup tc on port %d. Link Down?\n",
3176 pi->port_id);
3177 return -EINVAL;
3178 }
3179
2a84bbaf 3180 if (!tc_cls_can_offload_and_chain0(dev, type_data))
44ae12a7
JP		 3181 return -EOPNOTSUPP;
3182
f7323043
JP		 3183 switch (type) {
3184 case TC_SETUP_CLSU32:
de4784ca 3185 return cxgb_setup_tc_cls_u32(dev, type_data);
6a345b3d
KS		 3186 case TC_SETUP_CLSFLOWER:
3187 return cxgb_setup_tc_flower(dev, type_data);
f7323043
JP		 3188 default:
3189 return -EOPNOTSUPP;
d8931847 3190 }
d8931847
RL		 3191}
3192
cd019e91
JP		 3193static int cxgb_setup_tc(struct net_device *dev, enum tc_setup_type type,
3194 void *type_data)
3195{
4e95bc26
PNA		 3196 struct port_info *pi = netdev2pinfo(dev);
3197
cd019e91 3198 switch (type) {
cd019e91 3199 case TC_SETUP_BLOCK:
4e95bc26
PNA		 3200 return flow_block_cb_setup_simple(type_data, NULL,
3201 cxgb_setup_tc_block_cb,
3202 pi, dev, true);
cd019e91
JP		 3203 default:
3204 return -EOPNOTSUPP;
3205 }
3206}
3207
846eac3f
GG		 3208static void cxgb_del_udp_tunnel(struct net_device *netdev,
3209 struct udp_tunnel_info *ti)
3210{
3211 struct port_info *pi = netdev_priv(netdev);
3212 struct adapter *adapter = pi->adapter;
3213 unsigned int chip_ver = CHELSIO_CHIP_VERSION(adapter->params.chip);
3214 u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 };
3215 int ret = 0, i;
3216
3217 if (chip_ver < CHELSIO_T6)
3218 return;
3219
3220 switch (ti->type) {
3221 case UDP_TUNNEL_TYPE_VXLAN:
3222 if (!adapter->vxlan_port_cnt ||
3223 adapter->vxlan_port != ti->port)
3224 return; /* Invalid VxLAN destination port */
3225
3226 adapter->vxlan_port_cnt--;
3227 if (adapter->vxlan_port_cnt)
3228 return;
3229
3230 adapter->vxlan_port = 0;
3231 t4_write_reg(adapter, MPS_RX_VXLAN_TYPE_A, 0);
3232 break;
c746fc0e
GG		 3233 case UDP_TUNNEL_TYPE_GENEVE:
3234 if (!adapter->geneve_port_cnt ||
3235 adapter->geneve_port != ti->port)
3236 return; /* Invalid GENEVE destination port */
3237
3238 adapter->geneve_port_cnt--;
3239 if (adapter->geneve_port_cnt)
3240 return;
3241
3242 adapter->geneve_port = 0;
3243 t4_write_reg(adapter, MPS_RX_GENEVE_TYPE_A, 0);
942a656f 3244 break;
846eac3f
GG		 3245 default:
3246 return;
3247 }
3248
3249 /* Matchall mac entries can be deleted only after all tunnel ports
3250 * are brought down or removed.
3251 */
3252 if (!adapter->rawf_cnt)
3253 return;
3254 for_each_port(adapter, i) {
3255 pi = adap2pinfo(adapter, i);
3256 ret = t4_free_raw_mac_filt(adapter, pi->viid,
3257 match_all_mac, match_all_mac,
3258 adapter->rawf_start +
3259 pi->port_id,
443e2dab 3260 1, pi->port_id, false);
846eac3f
GG		 3261 if (ret < 0) {
3262 netdev_info(netdev, "Failed to free mac filter entry, for port %d\n",
3263 i);
3264 return;
3265 }
846eac3f
GG		 3266 }
3267}
3268
3269static void cxgb_add_udp_tunnel(struct net_device *netdev,
3270 struct udp_tunnel_info *ti)
3271{
3272 struct port_info *pi = netdev_priv(netdev);
3273 struct adapter *adapter = pi->adapter;
3274 unsigned int chip_ver = CHELSIO_CHIP_VERSION(adapter->params.chip);
3275 u8 match_all_mac[] = { 0, 0, 0, 0, 0, 0 };
3276 int i, ret;
3277
c746fc0e 3278 if (chip_ver < CHELSIO_T6 || !adapter->rawf_cnt)
846eac3f
GG		 3279 return;
3280
3281 switch (ti->type) {
3282 case UDP_TUNNEL_TYPE_VXLAN:
846eac3f
GG		 3283 /* Callback for adding vxlan port can be called with the same
3284 * port for both IPv4 and IPv6. We should not disable the
3285 * offloading when the same port for both protocols is added
3286 * and later one of them is removed.
3287 */
3288 if (adapter->vxlan_port_cnt &&
3289 adapter->vxlan_port == ti->port) {
3290 adapter->vxlan_port_cnt++;
3291 return;
3292 }
3293
3294 /* We will support only one VxLAN port */
3295 if (adapter->vxlan_port_cnt) {
3296 netdev_info(netdev, "UDP port %d already offloaded, not adding port %d\n",
3297 be16_to_cpu(adapter->vxlan_port),
3298 be16_to_cpu(ti->port));
3299 return;
3300 }
3301
3302 adapter->vxlan_port = ti->port;
3303 adapter->vxlan_port_cnt = 1;
3304
3305 t4_write_reg(adapter, MPS_RX_VXLAN_TYPE_A,
3306 VXLAN_V(be16_to_cpu(ti->port)) | VXLAN_EN_F);
3307 break;
c746fc0e
GG		 3308 case UDP_TUNNEL_TYPE_GENEVE:
3309 if (adapter->geneve_port_cnt &&
3310 adapter->geneve_port == ti->port) {
3311 adapter->geneve_port_cnt++;
3312 return;
3313 }
3314
3315 /* We will support only one GENEVE port */
3316 if (adapter->geneve_port_cnt) {
3317 netdev_info(netdev, "UDP port %d already offloaded, not adding port %d\n",
3318 be16_to_cpu(adapter->geneve_port),
3319 be16_to_cpu(ti->port));
3320 return;
3321 }
3322
3323 adapter->geneve_port = ti->port;
3324 adapter->geneve_port_cnt = 1;
3325
3326 t4_write_reg(adapter, MPS_RX_GENEVE_TYPE_A,
3327 GENEVE_V(be16_to_cpu(ti->port)) | GENEVE_EN_F);
942a656f 3328 break;
846eac3f
GG		 3329 default:
3330 return;
3331 }
3332
3333 /* Create a 'match all' mac filter entry for inner mac,
3334 * if raw mac interface is supported. Once the linux kernel provides
3335 * driver entry points for adding/deleting the inner mac addresses,
3336 * we will remove this 'match all' entry and fallback to adding
3337 * exact match filters.
3338 */
c746fc0e
GG		 3339 for_each_port(adapter, i) {
3340 pi = adap2pinfo(adapter, i);
3341
3342 ret = t4_alloc_raw_mac_filt(adapter, pi->viid,
3343 match_all_mac,
3344 match_all_mac,
3345 adapter->rawf_start +
3346 pi->port_id,
443e2dab 3347 1, pi->port_id, false);
c746fc0e
GG		 3348 if (ret < 0) {
3349 netdev_info(netdev, "Failed to allocate a mac filter entry, not adding port %d\n",
3350 be16_to_cpu(ti->port));
3351 cxgb_del_udp_tunnel(netdev, ti);
3352 return;
846eac3f
GG		 3353 }
3354 }
3355}
3356
4621ffd6
GG		 3357static netdev_features_t cxgb_features_check(struct sk_buff *skb,
3358 struct net_device *dev,
3359 netdev_features_t features)
3360{
3361 struct port_info *pi = netdev_priv(dev);
3362 struct adapter *adapter = pi->adapter;
3363
3364 if (CHELSIO_CHIP_VERSION(adapter->params.chip) < CHELSIO_T6)
3365 return features;
3366
3367 /* Check if hw supports offload for this packet */
3368 if (!skb->encapsulation || cxgb_encap_offload_supported(skb))
3369 return features;
3370
3371 /* Offload is not supported for this encapsulated packet */
3372 return features & ~(NETIF_F_CSUM_MASK | NETIF_F_GSO_MASK);
3373}
3374
90592b9a
AV		 3375static netdev_features_t cxgb_fix_features(struct net_device *dev,
3376 netdev_features_t features)
3377{
3378 /* Disable GRO, if RX_CSUM is disabled */
3379 if (!(features & NETIF_F_RXCSUM))
3380 features &= ~NETIF_F_GRO;
3381
3382 return features;
3383}
3384
b8ff05a9
DM		 3385static const struct net_device_ops cxgb4_netdev_ops = {
3386 .ndo_open = cxgb_open,
3387 .ndo_stop = cxgb_close,
d5fbda61 3388 .ndo_start_xmit = t4_start_xmit,
688848b1 3389 .ndo_select_queue = cxgb_select_queue,
9be793bf 3390 .ndo_get_stats64 = cxgb_get_stats,
b8ff05a9
DM		 3391 .ndo_set_rx_mode = cxgb_set_rxmode,
3392 .ndo_set_mac_address = cxgb_set_mac_addr,
2ed28baa 3393 .ndo_set_features = cxgb_set_features,
b8ff05a9
DM		 3394 .ndo_validate_addr = eth_validate_addr,
3395 .ndo_do_ioctl = cxgb_ioctl,
3396 .ndo_change_mtu = cxgb_change_mtu,
b8ff05a9
DM		 3397#ifdef CONFIG_NET_POLL_CONTROLLER
3398 .ndo_poll_controller = cxgb_netpoll,
3399#endif
84a200b3
VP		 3400#ifdef CONFIG_CHELSIO_T4_FCOE
3401 .ndo_fcoe_enable = cxgb_fcoe_enable,
3402 .ndo_fcoe_disable = cxgb_fcoe_disable,
3403#endif /* CONFIG_CHELSIO_T4_FCOE */
10a2604e 3404 .ndo_set_tx_maxrate = cxgb_set_tx_maxrate,
d8931847 3405 .ndo_setup_tc = cxgb_setup_tc,
846eac3f
GG		 3406 .ndo_udp_tunnel_add = cxgb_add_udp_tunnel,
3407 .ndo_udp_tunnel_del = cxgb_del_udp_tunnel,
4621ffd6 3408 .ndo_features_check = cxgb_features_check,
90592b9a 3409 .ndo_fix_features = cxgb_fix_features,
b8ff05a9
DM		 3410};
3411
858aa65c 3412#ifdef CONFIG_PCI_IOV
e7b48a32 3413static const struct net_device_ops cxgb4_mgmt_netdev_ops = {
8b965f3f
AV		 3414 .ndo_open = cxgb4_mgmt_open,
3415 .ndo_set_vf_mac = cxgb4_mgmt_set_vf_mac,
3416 .ndo_get_vf_config = cxgb4_mgmt_get_vf_config,
3417 .ndo_set_vf_rate = cxgb4_mgmt_set_vf_rate,
3418 .ndo_get_phys_port_id = cxgb4_mgmt_get_phys_port_id,
3419 .ndo_set_vf_vlan = cxgb4_mgmt_set_vf_vlan,
3420 .ndo_set_vf_link_state = cxgb4_mgmt_set_vf_link_state,
7829451c 3421};
e7b48a32 3422#endif
7829451c 3423
baf50868
GG		 3424static void cxgb4_mgmt_get_drvinfo(struct net_device *dev,
3425 struct ethtool_drvinfo *info)
7829451c
HS		 3426{
3427 struct adapter *adapter = netdev2adap(dev);
3428
3429 strlcpy(info->driver, cxgb4_driver_name, sizeof(info->driver));
3430 strlcpy(info->version, cxgb4_driver_version,
3431 sizeof(info->version));
3432 strlcpy(info->bus_info, pci_name(adapter->pdev),
3433 sizeof(info->bus_info));
3434}
3435
3436static const struct ethtool_ops cxgb4_mgmt_ethtool_ops = {
baf50868 3437 .get_drvinfo = cxgb4_mgmt_get_drvinfo,
7829451c
HS		 3438};
3439
8b7372c1
GG		 3440static void notify_fatal_err(struct work_struct *work)
3441{
3442 struct adapter *adap;
3443
3444 adap = container_of(work, struct adapter, fatal_err_notify_task);
3445 notify_ulds(adap, CXGB4_STATE_FATAL_ERROR);
3446}
3447
b8ff05a9
DM		 3448void t4_fatal_err(struct adapter *adap)
3449{
3be0679b
HS		 3450 int port;
3451
025d0973
GP		 3452 if (pci_channel_offline(adap->pdev))
3453 return;
3454
3be0679b
HS		 3455 /* Disable the SGE since ULDs are going to free resources that
3456 * could be exposed to the adapter. RDMA MWs for example...
3457 */
3458 t4_shutdown_adapter(adap);
3459 for_each_port(adap, port) {
3460 struct net_device *dev = adap->port[port];
3461
3462 /* If we get here in very early initialization the network
3463 * devices may not have been set up yet.
3464 */
3465 if (!dev)
3466 continue;
3467
3468 netif_tx_stop_all_queues(dev);
3469 netif_carrier_off(dev);
3470 }
b8ff05a9 3471 dev_alert(adap->pdev_dev, "encountered fatal error, adapter stopped\n");
8b7372c1 3472 queue_work(adap->workq, &adap->fatal_err_notify_task);
b8ff05a9
DM		 3473}
3474
3475static void setup_memwin(struct adapter *adap)
3476{
b562fc37 3477 u32 nic_win_base = t4_get_util_window(adap);
b8ff05a9 3478
b562fc37 3479 t4_setup_memwin(adap, nic_win_base, MEMWIN_NIC);
636f9d37
VP		 3480}
3481
3482static void setup_memwin_rdma(struct adapter *adap)
3483{
1ae970e0 3484 if (adap->vres.ocq.size) {
0abfd152
HS		 3485 u32 start;
3486 unsigned int sz_kb;
1ae970e0 3487
0abfd152
HS		 3488 start = t4_read_pcie_cfg4(adap, PCI_BASE_ADDRESS_2);
3489 start &= PCI_BASE_ADDRESS_MEM_MASK;
3490 start += OCQ_WIN_OFFSET(adap->pdev, &adap->vres);
1ae970e0
DM		 3491 sz_kb = roundup_pow_of_two(adap->vres.ocq.size) >> 10;
3492 t4_write_reg(adap,
f061de42
HS		 3493 PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_BASE_WIN_A, 3),
3494 start | BIR_V(1) | WINDOW_V(ilog2(sz_kb)));
1ae970e0 3495 t4_write_reg(adap,
f061de42 3496 PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET_A, 3),
1ae970e0
DM		 3497 adap->vres.ocq.start);
3498 t4_read_reg(adap,
f061de42 3499 PCIE_MEM_ACCESS_REG(PCIE_MEM_ACCESS_OFFSET_A, 3));
1ae970e0 3500 }
b8ff05a9
DM		 3501}
3502
8b4e6b3c
AV		 3503/* HMA Definitions */
3504
3505/* The maximum number of address that can be send in a single FW cmd */
3506#define HMA_MAX_ADDR_IN_CMD 5
3507
3508#define HMA_PAGE_SIZE PAGE_SIZE
3509
3510#define HMA_MAX_NO_FW_ADDRESS (16 << 10) /* FW supports 16K addresses */
3511
3512#define HMA_PAGE_ORDER \
3513 ((HMA_PAGE_SIZE < HMA_MAX_NO_FW_ADDRESS) ? \
3514 ilog2(HMA_MAX_NO_FW_ADDRESS / HMA_PAGE_SIZE) : 0)
3515
3516/* The minimum and maximum possible HMA sizes that can be specified in the FW
3517 * configuration(in units of MB).
3518 */
3519#define HMA_MIN_TOTAL_SIZE 1
3520#define HMA_MAX_TOTAL_SIZE \
3521 (((HMA_PAGE_SIZE << HMA_PAGE_ORDER) * \
3522 HMA_MAX_NO_FW_ADDRESS) >> 20)
3523
3524static void adap_free_hma_mem(struct adapter *adapter)
3525{
3526 struct scatterlist *iter;
3527 struct page *page;
3528 int i;
3529
3530 if (!adapter->hma.sgt)
3531 return;
3532
3533 if (adapter->hma.flags & HMA_DMA_MAPPED_FLAG) {
3534 dma_unmap_sg(adapter->pdev_dev, adapter->hma.sgt->sgl,
3535 adapter->hma.sgt->nents, PCI_DMA_BIDIRECTIONAL);
3536 adapter->hma.flags &= ~HMA_DMA_MAPPED_FLAG;
3537 }
3538
3539 for_each_sg(adapter->hma.sgt->sgl, iter,
3540 adapter->hma.sgt->orig_nents, i) {
3541 page = sg_page(iter);
3542 if (page)
3543 __free_pages(page, HMA_PAGE_ORDER);
3544 }
3545
3546 kfree(adapter->hma.phy_addr);
3547 sg_free_table(adapter->hma.sgt);
3548 kfree(adapter->hma.sgt);
3549 adapter->hma.sgt = NULL;
3550}
3551
3552static int adap_config_hma(struct adapter *adapter)
3553{
3554 struct scatterlist *sgl, *iter;
3555 struct sg_table *sgt;
3556 struct page *newpage;
3557 unsigned int i, j, k;
3558 u32 param, hma_size;
3559 unsigned int ncmds;
3560 size_t page_size;
3561 u32 page_order;
3562 int node, ret;
3563
3564 /* HMA is supported only for T6+ cards.
3565 * Avoid initializing HMA in kdump kernels.
3566 */
3567 if (is_kdump_kernel() ||
3568 CHELSIO_CHIP_VERSION(adapter->params.chip) < CHELSIO_T6)
3569 return 0;
3570
3571 /* Get the HMA region size required by fw */
3572 param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
3573 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_HMA_SIZE));
3574 ret = t4_query_params(adapter, adapter->mbox, adapter->pf, 0,
3575 1, &param, &hma_size);
3576 /* An error means card has its own memory or HMA is not supported by
3577 * the firmware. Return without any errors.
3578 */
3579 if (ret || !hma_size)
3580 return 0;
3581
3582 if (hma_size < HMA_MIN_TOTAL_SIZE ||
3583 hma_size > HMA_MAX_TOTAL_SIZE) {
3584 dev_err(adapter->pdev_dev,
3585 "HMA size %uMB beyond bounds(%u-%lu)MB\n",
3586 hma_size, HMA_MIN_TOTAL_SIZE, HMA_MAX_TOTAL_SIZE);
3587 return -EINVAL;
3588 }
3589
3590 page_size = HMA_PAGE_SIZE;
3591 page_order = HMA_PAGE_ORDER;
3592 adapter->hma.sgt = kzalloc(sizeof(*adapter->hma.sgt), GFP_KERNEL);
3593 if (unlikely(!adapter->hma.sgt)) {
3594 dev_err(adapter->pdev_dev, "HMA SG table allocation failed\n");
3595 return -ENOMEM;
3596 }
3597 sgt = adapter->hma.sgt;
3598 /* FW returned value will be in MB's
3599 */
3600 sgt->orig_nents = (hma_size << 20) / (page_size << page_order);
3601 if (sg_alloc_table(sgt, sgt->orig_nents, GFP_KERNEL)) {
3602 dev_err(adapter->pdev_dev, "HMA SGL allocation failed\n");
3603 kfree(adapter->hma.sgt);
3604 adapter->hma.sgt = NULL;
3605 return -ENOMEM;
3606 }
3607
3608 sgl = adapter->hma.sgt->sgl;
3609 node = dev_to_node(adapter->pdev_dev);
3610 for_each_sg(sgl, iter, sgt->orig_nents, i) {
2b928749
GG		 3611 newpage = alloc_pages_node(node, __GFP_NOWARN | GFP_KERNEL |
3612 __GFP_ZERO, page_order);
8b4e6b3c
AV		 3613 if (!newpage) {
3614 dev_err(adapter->pdev_dev,
3615 "Not enough memory for HMA page allocation\n");
3616 ret = -ENOMEM;
3617 goto free_hma;
3618 }
3619 sg_set_page(iter, newpage, page_size << page_order, 0);
3620 }
3621
3622 sgt->nents = dma_map_sg(adapter->pdev_dev, sgl, sgt->orig_nents,
3623 DMA_BIDIRECTIONAL);
3624 if (!sgt->nents) {
3625 dev_err(adapter->pdev_dev,
3626 "Not enough memory for HMA DMA mapping");
3627 ret = -ENOMEM;
3628 goto free_hma;
3629 }
3630 adapter->hma.flags |= HMA_DMA_MAPPED_FLAG;
3631
3632 adapter->hma.phy_addr = kcalloc(sgt->nents, sizeof(dma_addr_t),
3633 GFP_KERNEL);
3634 if (unlikely(!adapter->hma.phy_addr))
3635 goto free_hma;
3636
3637 for_each_sg(sgl, iter, sgt->nents, i) {
3638 newpage = sg_page(iter);
3639 adapter->hma.phy_addr[i] = sg_dma_address(iter);
3640 }
3641
3642 ncmds = DIV_ROUND_UP(sgt->nents, HMA_MAX_ADDR_IN_CMD);
3643 /* Pass on the addresses to firmware */
3644 for (i = 0, k = 0; i < ncmds; i++, k += HMA_MAX_ADDR_IN_CMD) {
3645 struct fw_hma_cmd hma_cmd;
3646 u8 naddr = HMA_MAX_ADDR_IN_CMD;
3647 u8 soc = 0, eoc = 0;
3648 u8 hma_mode = 1; /* Presently we support only Page table mode */
3649
3650 soc = (i == 0) ? 1 : 0;
3651 eoc = (i == ncmds - 1) ? 1 : 0;
3652
3653 /* For last cmd, set naddr corresponding to remaining
3654 * addresses
3655 */
3656 if (i == ncmds - 1) {
3657 naddr = sgt->nents % HMA_MAX_ADDR_IN_CMD;
3658 naddr = naddr ? naddr : HMA_MAX_ADDR_IN_CMD;
3659 }
3660 memset(&hma_cmd, 0, sizeof(hma_cmd));
3661 hma_cmd.op_pkd = htonl(FW_CMD_OP_V(FW_HMA_CMD) |
3662 FW_CMD_REQUEST_F | FW_CMD_WRITE_F);
3663 hma_cmd.retval_len16 = htonl(FW_LEN16(hma_cmd));
3664
3665 hma_cmd.mode_to_pcie_params =
3666 htonl(FW_HMA_CMD_MODE_V(hma_mode) |
3667 FW_HMA_CMD_SOC_V(soc) | FW_HMA_CMD_EOC_V(eoc));
3668
3669 /* HMA cmd size specified in MB's */
3670 hma_cmd.naddr_size =
3671 htonl(FW_HMA_CMD_SIZE_V(hma_size) |
3672 FW_HMA_CMD_NADDR_V(naddr));
3673
3674 /* Total Page size specified in units of 4K */
3675 hma_cmd.addr_size_pkd =
3676 htonl(FW_HMA_CMD_ADDR_SIZE_V
3677 ((page_size << page_order) >> 12));
3678
3679 /* Fill the 5 addresses */
3680 for (j = 0; j < naddr; j++) {
3681 hma_cmd.phy_address[j] =
3682 cpu_to_be64(adapter->hma.phy_addr[j + k]);
3683 }
3684 ret = t4_wr_mbox(adapter, adapter->mbox, &hma_cmd,
3685 sizeof(hma_cmd), &hma_cmd);
3686 if (ret) {
3687 dev_err(adapter->pdev_dev,
3688 "HMA FW command failed with err %d\n", ret);
3689 goto free_hma;
3690 }
3691 }
3692
3693 if (!ret)
3694 dev_info(adapter->pdev_dev,
3695 "Reserved %uMB host memory for HMA\n", hma_size);
3696 return ret;
3697
3698free_hma:
3699 adap_free_hma_mem(adapter);
3700 return ret;
3701}
3702
02b5fb8e
DM		 3703static int adap_init1(struct adapter *adap, struct fw_caps_config_cmd *c)
3704{
3705 u32 v;
3706 int ret;
3707
0eaec62a
CL		 3708 /* Now that we've successfully configured and initialized the adapter
3709 * can ask the Firmware what resources it has provisioned for us.
3710 */
3711 ret = t4_get_pfres(adap);
3712 if (ret) {
3713 dev_err(adap->pdev_dev,
3714 "Unable to retrieve resource provisioning information\n");
3715 return ret;
3716 }
3717
02b5fb8e
DM		 3718 /* get device capabilities */
3719 memset(c, 0, sizeof(*c));
e2ac9628
HS		 3720 c->op_to_write = htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) |
3721 FW_CMD_REQUEST_F | FW_CMD_READ_F);
ce91a923 3722 c->cfvalid_to_len16 = htonl(FW_LEN16(*c));
b2612722 3723 ret = t4_wr_mbox(adap, adap->mbox, c, sizeof(*c), c);
02b5fb8e
DM		 3724 if (ret < 0)
3725 return ret;
3726
e2ac9628
HS		 3727 c->op_to_write = htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) |
3728 FW_CMD_REQUEST_F | FW_CMD_WRITE_F);
b2612722 3729 ret = t4_wr_mbox(adap, adap->mbox, c, sizeof(*c), NULL);
02b5fb8e
DM		 3730 if (ret < 0)
3731 return ret;
3732
b2612722 3733 ret = t4_config_glbl_rss(adap, adap->pf,
02b5fb8e 3734 FW_RSS_GLB_CONFIG_CMD_MODE_BASICVIRTUAL,
b2e1a3f0
HS		 3735 FW_RSS_GLB_CONFIG_CMD_TNLMAPEN_F |
3736 FW_RSS_GLB_CONFIG_CMD_TNLALLLKP_F);
02b5fb8e
DM		 3737 if (ret < 0)
3738 return ret;
3739
b2612722 3740 ret = t4_cfg_pfvf(adap, adap->mbox, adap->pf, 0, adap->sge.egr_sz, 64,
4b8e27a8
HS		 3741 MAX_INGQ, 0, 0, 4, 0xf, 0xf, 16, FW_CMD_CAP_PF,
3742 FW_CMD_CAP_PF);
02b5fb8e
DM		 3743 if (ret < 0)
3744 return ret;
3745
3746 t4_sge_init(adap);
3747
02b5fb8e 3748 /* tweak some settings */
837e4a42 3749 t4_write_reg(adap, TP_SHIFT_CNT_A, 0x64f8849);
0d804338 3750 t4_write_reg(adap, ULP_RX_TDDP_PSZ_A, HPZ0_V(PAGE_SHIFT - 12));
837e4a42
HS		 3751 t4_write_reg(adap, TP_PIO_ADDR_A, TP_INGRESS_CONFIG_A);
3752 v = t4_read_reg(adap, TP_PIO_DATA_A);
3753 t4_write_reg(adap, TP_PIO_DATA_A, v & ~CSUM_HAS_PSEUDO_HDR_F);
060e0c75 3754
dca4faeb
VP		 3755 /* first 4 Tx modulation queues point to consecutive Tx channels */
3756 adap->params.tp.tx_modq_map = 0xE4;
0d804338
HS		 3757 t4_write_reg(adap, TP_TX_MOD_QUEUE_REQ_MAP_A,
3758 TX_MOD_QUEUE_REQ_MAP_V(adap->params.tp.tx_modq_map));
dca4faeb
VP		 3759
3760 /* associate each Tx modulation queue with consecutive Tx channels */
3761 v = 0x84218421;
837e4a42 3762 t4_write_indirect(adap, TP_PIO_ADDR_A, TP_PIO_DATA_A,
0d804338 3763 &v, 1, TP_TX_SCHED_HDR_A);
837e4a42 3764 t4_write_indirect(adap, TP_PIO_ADDR_A, TP_PIO_DATA_A,
0d804338 3765 &v, 1, TP_TX_SCHED_FIFO_A);
837e4a42 3766 t4_write_indirect(adap, TP_PIO_ADDR_A, TP_PIO_DATA_A,
0d804338 3767 &v, 1, TP_TX_SCHED_PCMD_A);
dca4faeb
VP		 3768
3769#define T4_TX_MODQ_10G_WEIGHT_DEFAULT 16 /* in KB units */
3770 if (is_offload(adap)) {
0d804338
HS		 3771 t4_write_reg(adap, TP_TX_MOD_QUEUE_WEIGHT0_A,
3772 TX_MODQ_WEIGHT0_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) |
3773 TX_MODQ_WEIGHT1_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) |
3774 TX_MODQ_WEIGHT2_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) |
3775 TX_MODQ_WEIGHT3_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT));
3776 t4_write_reg(adap, TP_TX_MOD_CHANNEL_WEIGHT_A,
3777 TX_MODQ_WEIGHT0_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) |
3778 TX_MODQ_WEIGHT1_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) |
3779 TX_MODQ_WEIGHT2_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT) |
3780 TX_MODQ_WEIGHT3_V(T4_TX_MODQ_10G_WEIGHT_DEFAULT));
dca4faeb
VP		 3781 }
3782
060e0c75 3783 /* get basic stuff going */
b2612722 3784 return t4_early_init(adap, adap->pf);
02b5fb8e
DM		 3785}
3786
b8ff05a9
DM		 3787/*
3788 * Max # of ATIDs. The absolute HW max is 16K but we keep it lower.
3789 */
3790#define MAX_ATIDS 8192U
3791
636f9d37
VP		 3792/*
3793 * Phase 0 of initialization: contact FW, obtain config, perform basic init.
3794 *
3795 * If the firmware we're dealing with has Configuration File support, then
3796 * we use that to perform all configuration
3797 */
3798
3799/*
3800 * Tweak configuration based on module parameters, etc. Most of these have
3801 * defaults assigned to them by Firmware Configuration Files (if we're using
3802 * them) but need to be explicitly set if we're using hard-coded
3803 * initialization. But even in the case of using Firmware Configuration
3804 * Files, we'd like to expose the ability to change these via module
3805 * parameters so these are essentially common tweaks/settings for
3806 * Configuration Files and hard-coded initialization ...
3807 */
3808static int adap_init0_tweaks(struct adapter *adapter)
3809{
3810 /*
3811 * Fix up various Host-Dependent Parameters like Page Size, Cache
3812 * Line Size, etc. The firmware default is for a 4KB Page Size and
3813 * 64B Cache Line Size ...
3814 */
3815 t4_fixup_host_params(adapter, PAGE_SIZE, L1_CACHE_BYTES);
3816
3817 /*
3818 * Process module parameters which affect early initialization.
3819 */
3820 if (rx_dma_offset != 2 && rx_dma_offset != 0) {
3821 dev_err(&adapter->pdev->dev,
3822 "Ignoring illegal rx_dma_offset=%d, using 2\n",
3823 rx_dma_offset);
3824 rx_dma_offset = 2;
3825 }
f612b815
HS		 3826 t4_set_reg_field(adapter, SGE_CONTROL_A,
3827 PKTSHIFT_V(PKTSHIFT_M),
3828 PKTSHIFT_V(rx_dma_offset));
636f9d37
VP		 3829
3830 /*
3831 * Don't include the "IP Pseudo Header" in CPL_RX_PKT checksums: Linux
3832 * adds the pseudo header itself.
3833 */
837e4a42
HS		 3834 t4_tp_wr_bits_indirect(adapter, TP_INGRESS_CONFIG_A,
3835 CSUM_HAS_PSEUDO_HDR_F, 0);
636f9d37
VP		 3836
3837 return 0;
3838}
3839
01b69614
HS		 3840/* 10Gb/s-BT PHY Support. chip-external 10Gb/s-BT PHYs are complex chips
3841 * unto themselves and they contain their own firmware to perform their
3842 * tasks ...
3843 */
3844static int phy_aq1202_version(const u8 *phy_fw_data,
3845 size_t phy_fw_size)
3846{
3847 int offset;
3848
3849 /* At offset 0x8 you're looking for the primary image's
3850 * starting offset which is 3 Bytes wide
3851 *
3852 * At offset 0xa of the primary image, you look for the offset
3853 * of the DRAM segment which is 3 Bytes wide.
3854 *
3855 * The FW version is at offset 0x27e of the DRAM and is 2 Bytes
3856 * wide
3857 */
3858 #define be16(__p) (((__p)[0] << 8) | (__p)[1])
3859 #define le16(__p) ((__p)[0] | ((__p)[1] << 8))
3860 #define le24(__p) (le16(__p) | ((__p)[2] << 16))
3861
3862 offset = le24(phy_fw_data + 0x8) << 12;
3863 offset = le24(phy_fw_data + offset + 0xa);
3864 return be16(phy_fw_data + offset + 0x27e);
3865
3866 #undef be16
3867 #undef le16
3868 #undef le24
3869}
3870
3871static struct info_10gbt_phy_fw {
3872 unsigned int phy_fw_id; /* PCI Device ID */
3873 char *phy_fw_file; /* /lib/firmware/ PHY Firmware file */
3874 int (*phy_fw_version)(const u8 *phy_fw_data, size_t phy_fw_size);
3875 int phy_flash; /* Has FLASH for PHY Firmware */
3876} phy_info_array[] = {
3877 {
3878 PHY_AQ1202_DEVICEID,
3879 PHY_AQ1202_FIRMWARE,
3880 phy_aq1202_version,
3881 1,
3882 },
3883 {
3884 PHY_BCM84834_DEVICEID,
3885 PHY_BCM84834_FIRMWARE,
3886 NULL,
3887 0,
3888 },
3889 { 0, NULL, NULL },
3890};
3891
3892static struct info_10gbt_phy_fw *find_phy_info(int devid)
3893{
3894 int i;
3895
3896 for (i = 0; i < ARRAY_SIZE(phy_info_array); i++) {
3897 if (phy_info_array[i].phy_fw_id == devid)
3898 return &phy_info_array[i];
3899 }
3900 return NULL;
3901}
3902
3903/* Handle updating of chip-external 10Gb/s-BT PHY firmware. This needs to
3904 * happen after the FW_RESET_CMD but before the FW_INITIALIZE_CMD. On error
3905 * we return a negative error number. If we transfer new firmware we return 1
3906 * (from t4_load_phy_fw()). If we don't do anything we return 0.
3907 */
3908static int adap_init0_phy(struct adapter *adap)
3909{
3910 const struct firmware *phyf;
3911 int ret;
3912 struct info_10gbt_phy_fw *phy_info;
3913
3914 /* Use the device ID to determine which PHY file to flash.
3915 */
3916 phy_info = find_phy_info(adap->pdev->device);
3917 if (!phy_info) {
3918 dev_warn(adap->pdev_dev,
3919 "No PHY Firmware file found for this PHY\n");
3920 return -EOPNOTSUPP;
3921 }
3922
3923 /* If we have a T4 PHY firmware file under /lib/firmware/cxgb4/, then
3924 * use that. The adapter firmware provides us with a memory buffer
3925 * where we can load a PHY firmware file from the host if we want to
3926 * override the PHY firmware File in flash.
3927 */
3928 ret = request_firmware_direct(&phyf, phy_info->phy_fw_file,
3929 adap->pdev_dev);
3930 if (ret < 0) {
3931 /* For adapters without FLASH attached to PHY for their
3932 * firmware, it's obviously a fatal error if we can't get the
3933 * firmware to the adapter. For adapters with PHY firmware
3934 * FLASH storage, it's worth a warning if we can't find the
3935 * PHY Firmware but we'll neuter the error ...
3936 */
3937 dev_err(adap->pdev_dev, "unable to find PHY Firmware image "
3938 "/lib/firmware/%s, error %d\n",
3939 phy_info->phy_fw_file, -ret);
3940 if (phy_info->phy_flash) {
3941 int cur_phy_fw_ver = 0;
3942
3943 t4_phy_fw_ver(adap, &cur_phy_fw_ver);
3944 dev_warn(adap->pdev_dev, "continuing with, on-adapter "
3945 "FLASH copy, version %#x\n", cur_phy_fw_ver);
3946 ret = 0;
3947 }
3948
3949 return ret;
3950 }
3951
3952 /* Load PHY Firmware onto adapter.
3953 */
3954 ret = t4_load_phy_fw(adap, MEMWIN_NIC, &adap->win0_lock,
3955 phy_info->phy_fw_version,
3956 (u8 *)phyf->data, phyf->size);
3957 if (ret < 0)
3958 dev_err(adap->pdev_dev, "PHY Firmware transfer error %d\n",
3959 -ret);
3960 else if (ret > 0) {
3961 int new_phy_fw_ver = 0;
3962
3963 if (phy_info->phy_fw_version)
3964 new_phy_fw_ver = phy_info->phy_fw_version(phyf->data,
3965 phyf->size);
3966 dev_info(adap->pdev_dev, "Successfully transferred PHY "
3967 "Firmware /lib/firmware/%s, version %#x\n",
3968 phy_info->phy_fw_file, new_phy_fw_ver);
3969 }
3970
3971 release_firmware(phyf);
3972
3973 return ret;
3974}
3975
636f9d37
VP		 3976/*
3977 * Attempt to initialize the adapter via a Firmware Configuration File.
3978 */
3979static int adap_init0_config(struct adapter *adapter, int reset)
3980{
74dd5aa1
VK		 3981 char *fw_config_file, fw_config_file_path[256];
3982 u32 finiver, finicsum, cfcsum, param, val;
636f9d37 3983 struct fw_caps_config_cmd caps_cmd;
636f9d37 3984 unsigned long mtype = 0, maddr = 0;
74dd5aa1 3985 const struct firmware *cf;
16e47624 3986 char *config_name = NULL;
74dd5aa1
VK		 3987 int config_issued = 0;
3988 int ret;
636f9d37
VP		 3989
3990 /*
3991 * Reset device if necessary.
3992 */
3993 if (reset) {
3994 ret = t4_fw_reset(adapter, adapter->mbox,
0d804338 3995 PIORSTMODE_F | PIORST_F);
636f9d37
VP		 3996 if (ret < 0)
3997 goto bye;
3998 }
3999
01b69614
HS		 4000 /* If this is a 10Gb/s-BT adapter make sure the chip-external
4001 * 10Gb/s-BT PHYs have up-to-date firmware. Note that this step needs
4002 * to be performed after any global adapter RESET above since some
4003 * PHYs only have local RAM copies of the PHY firmware.
4004 */
4005 if (is_10gbt_device(adapter->pdev->device)) {
4006 ret = adap_init0_phy(adapter);
4007 if (ret < 0)
4008 goto bye;
4009 }
636f9d37
VP		 4010 /*
4011 * If we have a T4 configuration file under /lib/firmware/cxgb4/,
4012 * then use that. Otherwise, use the configuration file stored
4013 * in the adapter flash ...
4014 */
d14807dd 4015 switch (CHELSIO_CHIP_VERSION(adapter->params.chip)) {
0a57a536 4016 case CHELSIO_T4:
16e47624 4017 fw_config_file = FW4_CFNAME;
0a57a536
SR		 4018 break;
4019 case CHELSIO_T5:
4020 fw_config_file = FW5_CFNAME;
4021 break;
3ccc6cf7
HS		 4022 case CHELSIO_T6:
4023 fw_config_file = FW6_CFNAME;
4024 break;
0a57a536
SR		 4025 default:
4026 dev_err(adapter->pdev_dev, "Device %d is not supported\n",
4027 adapter->pdev->device);
4028 ret = -EINVAL;
4029 goto bye;
4030 }
4031
4032 ret = request_firmware(&cf, fw_config_file, adapter->pdev_dev);
636f9d37 4033 if (ret < 0) {
16e47624 4034 config_name = "On FLASH";
636f9d37
VP		 4035 mtype = FW_MEMTYPE_CF_FLASH;
4036 maddr = t4_flash_cfg_addr(adapter);
4037 } else {
4038 u32 params[7], val[7];
4039
16e47624
HS		 4040 sprintf(fw_config_file_path,
4041 "/lib/firmware/%s", fw_config_file);
4042 config_name = fw_config_file_path;
4043
636f9d37
VP		 4044 if (cf->size >= FLASH_CFG_MAX_SIZE)
4045 ret = -ENOMEM;
4046 else {
5167865a
HS		 4047 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
4048 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_CF));
636f9d37 4049 ret = t4_query_params(adapter, adapter->mbox,
b2612722 4050 adapter->pf, 0, 1, params, val);
636f9d37
VP		 4051 if (ret == 0) {
4052 /*
fc5ab020 4053 * For t4_memory_rw() below addresses and
636f9d37
VP		 4054 * sizes have to be in terms of multiples of 4
4055 * bytes. So, if the Configuration File isn't
4056 * a multiple of 4 bytes in length we'll have
4057 * to write that out separately since we can't
4058 * guarantee that the bytes following the
4059 * residual byte in the buffer returned by
4060 * request_firmware() are zeroed out ...
4061 */
4062 size_t resid = cf->size & 0x3;
4063 size_t size = cf->size & ~0x3;
4064 __be32 *data = (__be32 *)cf->data;
4065
5167865a
HS		 4066 mtype = FW_PARAMS_PARAM_Y_G(val[0]);
4067 maddr = FW_PARAMS_PARAM_Z_G(val[0]) << 16;
636f9d37 4068
fc5ab020
HS		 4069 spin_lock(&adapter->win0_lock);
4070 ret = t4_memory_rw(adapter, 0, mtype, maddr,
4071 size, data, T4_MEMORY_WRITE);
636f9d37
VP		 4072 if (ret == 0 && resid != 0) {
4073 union {
4074 __be32 word;
4075 char buf[4];
4076 } last;
4077 int i;
4078
4079 last.word = data[size >> 2];
4080 for (i = resid; i < 4; i++)
4081 last.buf[i] = 0;
fc5ab020
HS		 4082 ret = t4_memory_rw(adapter, 0, mtype,
4083 maddr + size,
4084 4, &last.word,
4085 T4_MEMORY_WRITE);
636f9d37 4086 }
fc5ab020 4087 spin_unlock(&adapter->win0_lock);
636f9d37
VP		 4088 }
4089 }
4090
4091 release_firmware(cf);
4092 if (ret)
4093 goto bye;
4094 }
4095
74dd5aa1
VK		 4096 val = 0;
4097
4098 /* Ofld + Hash filter is supported. Older fw will fail this request and
4099 * it is fine.
4100 */
4101 param = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
4102 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_HASHFILTER_WITH_OFLD));
4103 ret = t4_set_params(adapter, adapter->mbox, adapter->pf, 0,
4104 1, &param, &val);
4105
4106 /* FW doesn't know about Hash filter + ofld support,
4107 * it's not a problem, don't return an error.
4108 */
4109 if (ret < 0) {
4110 dev_warn(adapter->pdev_dev,
4111 "Hash filter with ofld is not supported by FW\n");
4112 }
4113
636f9d37
VP		 4114 /*
4115 * Issue a Capability Configuration command to the firmware to get it
4116 * to parse the Configuration File. We don't use t4_fw_config_file()
4117 * because we want the ability to modify various features after we've
4118 * processed the configuration file ...
4119 */
4120 memset(&caps_cmd, 0, sizeof(caps_cmd));
4121 caps_cmd.op_to_write =
e2ac9628
HS		 4122 htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) |
4123 FW_CMD_REQUEST_F |
4124 FW_CMD_READ_F);
ce91a923 4125 caps_cmd.cfvalid_to_len16 =
5167865a
HS		 4126 htonl(FW_CAPS_CONFIG_CMD_CFVALID_F |
4127 FW_CAPS_CONFIG_CMD_MEMTYPE_CF_V(mtype) |
4128 FW_CAPS_CONFIG_CMD_MEMADDR64K_CF_V(maddr >> 16) |
636f9d37
VP		 4129 FW_LEN16(caps_cmd));
4130 ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
4131 &caps_cmd);
16e47624
HS		 4132
4133 /* If the CAPS_CONFIG failed with an ENOENT (for a Firmware
4134 * Configuration File in FLASH), our last gasp effort is to use the
4135 * Firmware Configuration File which is embedded in the firmware. A
4136 * very few early versions of the firmware didn't have one embedded
4137 * but we can ignore those.
4138 */
4139 if (ret == -ENOENT) {
4140 memset(&caps_cmd, 0, sizeof(caps_cmd));
4141 caps_cmd.op_to_write =
e2ac9628
HS		 4142 htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) |
4143 FW_CMD_REQUEST_F |
4144 FW_CMD_READ_F);
16e47624
HS		 4145 caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd));
4146 ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd,
4147 sizeof(caps_cmd), &caps_cmd);
4148 config_name = "Firmware Default";
4149 }
4150
4151 config_issued = 1;
636f9d37
VP		 4152 if (ret < 0)
4153 goto bye;
4154
4155 finiver = ntohl(caps_cmd.finiver);
4156 finicsum = ntohl(caps_cmd.finicsum);
4157 cfcsum = ntohl(caps_cmd.cfcsum);
4158 if (finicsum != cfcsum)
4159 dev_warn(adapter->pdev_dev, "Configuration File checksum "\
4160 "mismatch: [fini] csum=%#x, computed csum=%#x\n",
4161 finicsum, cfcsum);
4162
636f9d37
VP		 4163 /*
4164 * And now tell the firmware to use the configuration we just loaded.
4165 */
4166 caps_cmd.op_to_write =
e2ac9628
HS		 4167 htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) |
4168 FW_CMD_REQUEST_F |
4169 FW_CMD_WRITE_F);
ce91a923 4170 caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd));
636f9d37
VP		 4171 ret = t4_wr_mbox(adapter, adapter->mbox, &caps_cmd, sizeof(caps_cmd),
4172 NULL);
4173 if (ret < 0)
4174 goto bye;
4175
4176 /*
4177 * Tweak configuration based on system architecture, module
4178 * parameters, etc.
4179 */
4180 ret = adap_init0_tweaks(adapter);
4181 if (ret < 0)
4182 goto bye;
4183
8b4e6b3c
AV		 4184 /* We will proceed even if HMA init fails. */
4185 ret = adap_config_hma(adapter);
4186 if (ret)
4187 dev_err(adapter->pdev_dev,
4188 "HMA configuration failed with error %d\n", ret);
4189
a248384e
VP		 4190 if (is_t6(adapter->params.chip)) {
4191 ret = setup_ppod_edram(adapter);
4192 if (!ret)
4193 dev_info(adapter->pdev_dev, "Successfully enabled "
4194 "ppod edram feature\n");
4195 }
4196
636f9d37
VP		 4197 /*
4198 * And finally tell the firmware to initialize itself using the
4199 * parameters from the Configuration File.
4200 */
4201 ret = t4_fw_initialize(adapter, adapter->mbox);
4202 if (ret < 0)
4203 goto bye;
4204
06640310
HS		 4205 /* Emit Firmware Configuration File information and return
4206 * successfully.
636f9d37 4207 */
636f9d37 4208 dev_info(adapter->pdev_dev, "Successfully configured using Firmware "\
16e47624
HS		 4209 "Configuration File \"%s\", version %#x, computed checksum %#x\n",
4210 config_name, finiver, cfcsum);
636f9d37
VP		 4211 return 0;
4212
4213 /*
4214 * Something bad happened. Return the error ... (If the "error"
4215 * is that there's no Configuration File on the adapter we don't
4216 * want to issue a warning since this is fairly common.)
4217 */
4218bye:
16e47624
HS		 4219 if (config_issued && ret != -ENOENT)
4220 dev_warn(adapter->pdev_dev, "\"%s\" configuration file error %d\n",
4221 config_name, -ret);
636f9d37
VP		 4222 return ret;
4223}
4224
16e47624
HS		 4225static struct fw_info fw_info_array[] = {
4226 {
4227 .chip = CHELSIO_T4,
4228 .fs_name = FW4_CFNAME,
4229 .fw_mod_name = FW4_FNAME,
4230 .fw_hdr = {
4231 .chip = FW_HDR_CHIP_T4,
4232 .fw_ver = __cpu_to_be32(FW_VERSION(T4)),
4233 .intfver_nic = FW_INTFVER(T4, NIC),
4234 .intfver_vnic = FW_INTFVER(T4, VNIC),
4235 .intfver_ri = FW_INTFVER(T4, RI),
4236 .intfver_iscsi = FW_INTFVER(T4, ISCSI),
4237 .intfver_fcoe = FW_INTFVER(T4, FCOE),
4238 },
4239 }, {
4240 .chip = CHELSIO_T5,
4241 .fs_name = FW5_CFNAME,
4242 .fw_mod_name = FW5_FNAME,
4243 .fw_hdr = {
4244 .chip = FW_HDR_CHIP_T5,
4245 .fw_ver = __cpu_to_be32(FW_VERSION(T5)),
4246 .intfver_nic = FW_INTFVER(T5, NIC),
4247 .intfver_vnic = FW_INTFVER(T5, VNIC),
4248 .intfver_ri = FW_INTFVER(T5, RI),
4249 .intfver_iscsi = FW_INTFVER(T5, ISCSI),
4250 .intfver_fcoe = FW_INTFVER(T5, FCOE),
4251 },
3ccc6cf7
HS		 4252 }, {
4253 .chip = CHELSIO_T6,
4254 .fs_name = FW6_CFNAME,
4255 .fw_mod_name = FW6_FNAME,
4256 .fw_hdr = {
4257 .chip = FW_HDR_CHIP_T6,
4258 .fw_ver = __cpu_to_be32(FW_VERSION(T6)),
4259 .intfver_nic = FW_INTFVER(T6, NIC),
4260 .intfver_vnic = FW_INTFVER(T6, VNIC),
4261 .intfver_ofld = FW_INTFVER(T6, OFLD),
4262 .intfver_ri = FW_INTFVER(T6, RI),
4263 .intfver_iscsipdu = FW_INTFVER(T6, ISCSIPDU),
4264 .intfver_iscsi = FW_INTFVER(T6, ISCSI),
4265 .intfver_fcoepdu = FW_INTFVER(T6, FCOEPDU),
4266 .intfver_fcoe = FW_INTFVER(T6, FCOE),
4267 },
16e47624 4268 }
3ccc6cf7 4269
16e47624
HS		 4270};
4271
4272static struct fw_info *find_fw_info(int chip)
4273{
4274 int i;
4275
4276 for (i = 0; i < ARRAY_SIZE(fw_info_array); i++) {
4277 if (fw_info_array[i].chip == chip)
4278 return &fw_info_array[i];
4279 }
4280 return NULL;
4281}
4282
b8ff05a9
DM		 4283/*
4284 * Phase 0 of initialization: contact FW, obtain config, perform basic init.
4285 */
4286static int adap_init0(struct adapter *adap)
4287{
4288 int ret;
4289 u32 v, port_vec;
4290 enum dev_state state;
4291 u32 params[7], val[7];
9a4da2cd 4292 struct fw_caps_config_cmd caps_cmd;
dcf7b6f5 4293 int reset = 1;
b8ff05a9 4294
ae469b68
HS		 4295 /* Grab Firmware Device Log parameters as early as possible so we have
4296 * access to it for debugging, etc.
4297 */
4298 ret = t4_init_devlog_params(adap);
4299 if (ret < 0)
4300 return ret;
4301
666224d4 4302 /* Contact FW, advertising Master capability */
c5a8c0f3
HS		 4303 ret = t4_fw_hello(adap, adap->mbox, adap->mbox,
4304 is_kdump_kernel() ? MASTER_MUST : MASTER_MAY, &state);
b8ff05a9
DM		 4305 if (ret < 0) {
4306 dev_err(adap->pdev_dev, "could not connect to FW, error %d\n",
4307 ret);
4308 return ret;
4309 }
636f9d37 4310 if (ret == adap->mbox)
80f61f19 4311 adap->flags |= CXGB4_MASTER_PF;
b8ff05a9 4312
636f9d37
VP		 4313 /*
4314 * If we're the Master PF Driver and the device is uninitialized,
4315 * then let's consider upgrading the firmware ... (We always want
4316 * to check the firmware version number in order to A. get it for
4317 * later reporting and B. to warn if the currently loaded firmware
4318 * is excessively mismatched relative to the driver.)
4319 */
0de72738 4320
760446f9 4321 t4_get_version_info(adap);
a69265e9
HS		 4322 ret = t4_check_fw_version(adap);
4323 /* If firmware is too old (not supported by driver) force an update. */
21d11bd6 4324 if (ret)
a69265e9 4325 state = DEV_STATE_UNINIT;
80f61f19 4326 if ((adap->flags & CXGB4_MASTER_PF) && state != DEV_STATE_INIT) {
16e47624
HS		 4327 struct fw_info *fw_info;
4328 struct fw_hdr *card_fw;
4329 const struct firmware *fw;
4330 const u8 *fw_data = NULL;
4331 unsigned int fw_size = 0;
4332
4333 /* This is the firmware whose headers the driver was compiled
4334 * against
4335 */
4336 fw_info = find_fw_info(CHELSIO_CHIP_VERSION(adap->params.chip));
4337 if (fw_info == NULL) {
4338 dev_err(adap->pdev_dev,
4339 "unable to get firmware info for chip %d.\n",
4340 CHELSIO_CHIP_VERSION(adap->params.chip));
4341 return -EINVAL;
636f9d37 4342 }
16e47624
HS		 4343
4344 /* allocate memory to read the header of the firmware on the
4345 * card
4346 */
752ade68 4347 card_fw = kvzalloc(sizeof(*card_fw), GFP_KERNEL);
d624613e
Y		 4348 if (!card_fw) {
4349 ret = -ENOMEM;
4350 goto bye;
4351 }
16e47624
HS		 4352
4353 /* Get FW from from /lib/firmware/ */
4354 ret = request_firmware(&fw, fw_info->fw_mod_name,
4355 adap->pdev_dev);
4356 if (ret < 0) {
4357 dev_err(adap->pdev_dev,
4358 "unable to load firmware image %s, error %d\n",
4359 fw_info->fw_mod_name, ret);
4360 } else {
4361 fw_data = fw->data;
4362 fw_size = fw->size;
4363 }
4364
4365 /* upgrade FW logic */
4366 ret = t4_prep_fw(adap, fw_info, fw_data, fw_size, card_fw,
4367 state, &reset);
4368
4369 /* Cleaning up */
0b5b6bee 4370 release_firmware(fw);
752ade68 4371 kvfree(card_fw);
16e47624 4372
636f9d37 4373 if (ret < 0)
16e47624 4374 goto bye;
636f9d37 4375 }
b8ff05a9 4376
06640310
HS		 4377 /* If the firmware is initialized already, emit a simply note to that
4378 * effect. Otherwise, it's time to try initializing the adapter.
636f9d37
VP		 4379 */
4380 if (state == DEV_STATE_INIT) {
8b4e6b3c
AV		 4381 ret = adap_config_hma(adap);
4382 if (ret)
4383 dev_err(adap->pdev_dev,
4384 "HMA configuration failed with error %d\n",
4385 ret);
636f9d37
VP		 4386 dev_info(adap->pdev_dev, "Coming up as %s: "\
4387 "Adapter already initialized\n",
80f61f19 4388 adap->flags & CXGB4_MASTER_PF ? "MASTER" : "SLAVE");
636f9d37
VP		 4389 } else {
4390 dev_info(adap->pdev_dev, "Coming up as MASTER: "\
4391 "Initializing adapter\n");
06640310
HS		 4392
4393 /* Find out whether we're dealing with a version of the
4394 * firmware which has configuration file support.
636f9d37 4395 */
06640310
HS		 4396 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
4397 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_CF));
b2612722 4398 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1,
06640310 4399 params, val);
13ee15d3 4400
06640310
HS		 4401 /* If the firmware doesn't support Configuration Files,
4402 * return an error.
4403 */
4404 if (ret < 0) {
4405 dev_err(adap->pdev_dev, "firmware doesn't support "
4406 "Firmware Configuration Files\n");
4407 goto bye;
4408 }
4409
4410 /* The firmware provides us with a memory buffer where we can
4411 * load a Configuration File from the host if we want to
4412 * override the Configuration File in flash.
4413 */
4414 ret = adap_init0_config(adap, reset);
4415 if (ret == -ENOENT) {
4416 dev_err(adap->pdev_dev, "no Configuration File "
4417 "present on adapter.\n");
4418 goto bye;
636f9d37
VP		 4419 }
4420 if (ret < 0) {
06640310
HS		 4421 dev_err(adap->pdev_dev, "could not initialize "
4422 "adapter, error %d\n", -ret);
636f9d37
VP		 4423 goto bye;
4424 }
4425 }
4426
0eaec62a
CL		 4427 /* Now that we've successfully configured and initialized the adapter
4428 * (or found it already initialized), we can ask the Firmware what
4429 * resources it has provisioned for us.
4430 */
4431 ret = t4_get_pfres(adap);
4432 if (ret) {
4433 dev_err(adap->pdev_dev,
4434 "Unable to retrieve resource provisioning information\n");
4435 goto bye;
4436 }
4437
4438 /* Grab VPD parameters. This should be done after we establish a
4439 * connection to the firmware since some of the VPD parameters
4440 * (notably the Core Clock frequency) are retrieved via requests to
4441 * the firmware. On the other hand, we need these fairly early on
4442 * so we do this right after getting ahold of the firmware.
4443 *
4444 * We need to do this after initializing the adapter because someone
4445 * could have FLASHed a new VPD which won't be read by the firmware
4446 * until we do the RESET ...
4447 */
4448 ret = t4_get_vpd_params(adap, &adap->params.vpd);
4449 if (ret < 0)
4450 goto bye;
4451
4452 /* Find out what ports are available to us. Note that we need to do
4453 * this before calling adap_init0_no_config() since it needs nports
4454 * and portvec ...
4455 */
4456 v =
4457 FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
4458 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_PORTVEC);
4459 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, &v, &port_vec);
4460 if (ret < 0)
4461 goto bye;
4462
4463 adap->params.nports = hweight32(port_vec);
4464 adap->params.portvec = port_vec;
4465
06640310
HS		 4466 /* Give the SGE code a chance to pull in anything that it needs ...
4467 * Note that this must be called after we retrieve our VPD parameters
4468 * in order to know how to convert core ticks to seconds, etc.
636f9d37 4469 */
06640310
HS		 4470 ret = t4_sge_init(adap);
4471 if (ret < 0)
4472 goto bye;
636f9d37 4473
d429005f
VK		 4474 /* Grab the SGE Doorbell Queue Timer values. If successful, that
4475 * indicates that the Firmware and Hardware support this.
4476 */
543a1b85
VK		 4477 params[0] = (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) |
4478 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_DBQ_TIMERTICK));
4479 ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
4480 1, params, val);
4481
4482 if (!ret) {
4483 adap->sge.dbqtimer_tick = val[0];
4484 ret = t4_read_sge_dbqtimers(adap,
4485 ARRAY_SIZE(adap->sge.dbqtimer_val),
4486 adap->sge.dbqtimer_val);
4487 }
4488
d429005f 4489 if (!ret)
80f61f19 4490 adap->flags |= CXGB4_SGE_DBQ_TIMER;
d429005f 4491
9a4da2cd
VP		 4492 if (is_bypass_device(adap->pdev->device))
4493 adap->params.bypass = 1;
4494
636f9d37
VP		 4495 /*
4496 * Grab some of our basic fundamental operating parameters.
4497 */
4498#define FW_PARAM_DEV(param) \
5167865a
HS		 4499 (FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_DEV) | \
4500 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_DEV_##param))
636f9d37 4501
b8ff05a9 4502#define FW_PARAM_PFVF(param) \
5167865a
HS		 4503 FW_PARAMS_MNEM_V(FW_PARAMS_MNEM_PFVF) | \
4504 FW_PARAMS_PARAM_X_V(FW_PARAMS_PARAM_PFVF_##param)| \
4505 FW_PARAMS_PARAM_Y_V(0) | \
4506 FW_PARAMS_PARAM_Z_V(0)
b8ff05a9 4507
636f9d37 4508 params[0] = FW_PARAM_PFVF(EQ_START);
b8ff05a9
DM		 4509 params[1] = FW_PARAM_PFVF(L2T_START);
4510 params[2] = FW_PARAM_PFVF(L2T_END);
4511 params[3] = FW_PARAM_PFVF(FILTER_START);
4512 params[4] = FW_PARAM_PFVF(FILTER_END);
e46dab4d 4513 params[5] = FW_PARAM_PFVF(IQFLINT_START);
b2612722 4514 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 6, params, val);
b8ff05a9
DM		 4515 if (ret < 0)
4516 goto bye;
636f9d37
VP		 4517 adap->sge.egr_start = val[0];
4518 adap->l2t_start = val[1];
4519 adap->l2t_end = val[2];
b8ff05a9
DM		 4520 adap->tids.ftid_base = val[3];
4521 adap->tids.nftids = val[4] - val[3] + 1;
e46dab4d 4522 adap->sge.ingr_start = val[5];
b8ff05a9 4523
0e249898
AV		 4524 if (CHELSIO_CHIP_VERSION(adap->params.chip) > CHELSIO_T5) {
4525 /* Read the raw mps entries. In T6, the last 2 tcam entries
4526 * are reserved for raw mac addresses (rawf = 2, one per port).
4527 */
4528 params[0] = FW_PARAM_PFVF(RAWF_START);
4529 params[1] = FW_PARAM_PFVF(RAWF_END);
4530 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2,
4531 params, val);
4532 if (ret == 0) {
4533 adap->rawf_start = val[0];
4534 adap->rawf_cnt = val[1] - val[0] + 1;
4535 }
4536 }
4537
4b8e27a8
HS		 4538 /* qids (ingress/egress) returned from firmware can be anywhere
4539 * in the range from EQ(IQFLINT)_START to EQ(IQFLINT)_END.
4540 * Hence driver needs to allocate memory for this range to
4541 * store the queue info. Get the highest IQFLINT/EQ index returned
4542 * in FW_EQ_*_CMD.alloc command.
4543 */
4544 params[0] = FW_PARAM_PFVF(EQ_END);
4545 params[1] = FW_PARAM_PFVF(IQFLINT_END);
b2612722 4546 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val);
4b8e27a8
HS		 4547 if (ret < 0)
4548 goto bye;
4549 adap->sge.egr_sz = val[0] - adap->sge.egr_start + 1;
4550 adap->sge.ingr_sz = val[1] - adap->sge.ingr_start + 1;
4551
4552 adap->sge.egr_map = kcalloc(adap->sge.egr_sz,
4553 sizeof(*adap->sge.egr_map), GFP_KERNEL);
4554 if (!adap->sge.egr_map) {
4555 ret = -ENOMEM;
4556 goto bye;
4557 }
4558
4559 adap->sge.ingr_map = kcalloc(adap->sge.ingr_sz,
4560 sizeof(*adap->sge.ingr_map), GFP_KERNEL);
4561 if (!adap->sge.ingr_map) {
4562 ret = -ENOMEM;
4563 goto bye;
4564 }
4565
4566 /* Allocate the memory for the vaious egress queue bitmaps
5b377d11 4567 * ie starving_fl, txq_maperr and blocked_fl.
4b8e27a8
HS		 4568 */
4569 adap->sge.starving_fl = kcalloc(BITS_TO_LONGS(adap->sge.egr_sz),
4570 sizeof(long), GFP_KERNEL);
4571 if (!adap->sge.starving_fl) {
4572 ret = -ENOMEM;
4573 goto bye;
4574 }
4575
4576 adap->sge.txq_maperr = kcalloc(BITS_TO_LONGS(adap->sge.egr_sz),
4577 sizeof(long), GFP_KERNEL);
4578 if (!adap->sge.txq_maperr) {
4579 ret = -ENOMEM;
4580 goto bye;
4581 }
4582
5b377d11
HS		 4583#ifdef CONFIG_DEBUG_FS
4584 adap->sge.blocked_fl = kcalloc(BITS_TO_LONGS(adap->sge.egr_sz),
4585 sizeof(long), GFP_KERNEL);
4586 if (!adap->sge.blocked_fl) {
4587 ret = -ENOMEM;
4588 goto bye;
4589 }
4590#endif
4591
b5a02f50
AB		 4592 params[0] = FW_PARAM_PFVF(CLIP_START);
4593 params[1] = FW_PARAM_PFVF(CLIP_END);
b2612722 4594 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val);
b5a02f50
AB		 4595 if (ret < 0)
4596 goto bye;
4597 adap->clipt_start = val[0];
4598 adap->clipt_end = val[1];
4599
b72a32da
RL		 4600 /* We don't yet have a PARAMs calls to retrieve the number of Traffic
4601 * Classes supported by the hardware/firmware so we hard code it here
4602 * for now.
4603 */
4604 adap->params.nsched_cls = is_t4(adap->params.chip) ? 15 : 16;
4605
636f9d37
VP		 4606 /* query params related to active filter region */
4607 params[0] = FW_PARAM_PFVF(ACTIVE_FILTER_START);
4608 params[1] = FW_PARAM_PFVF(ACTIVE_FILTER_END);
b2612722 4609 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params, val);
636f9d37
VP		 4610 /* If Active filter size is set we enable establishing
4611 * offload connection through firmware work request
4612 */
4613 if ((val[0] != val[1]) && (ret >= 0)) {
80f61f19 4614 adap->flags |= CXGB4_FW_OFLD_CONN;
636f9d37
VP		 4615 adap->tids.aftid_base = val[0];
4616 adap->tids.aftid_end = val[1];
4617 }
4618
b407a4a9
VP		 4619 /* If we're running on newer firmware, let it know that we're
4620 * prepared to deal with encapsulated CPL messages. Older
4621 * firmware won't understand this and we'll just get
4622 * unencapsulated messages ...
4623 */
4624 params[0] = FW_PARAM_PFVF(CPLFW4MSG_ENCAP);
4625 val[0] = 1;
b2612722 4626 (void)t4_set_params(adap, adap->mbox, adap->pf, 0, 1, params, val);
b407a4a9 4627
1ac0f095
KS		 4628 /*
4629 * Find out whether we're allowed to use the T5+ ULPTX MEMWRITE DSGL
4630 * capability. Earlier versions of the firmware didn't have the
4631 * ULPTX_MEMWRITE_DSGL so we'll interpret a query failure as no
4632 * permission to use ULPTX MEMWRITE DSGL.
4633 */
4634 if (is_t4(adap->params.chip)) {
4635 adap->params.ulptx_memwrite_dsgl = false;
4636 } else {
4637 params[0] = FW_PARAM_DEV(ULPTX_MEMWRITE_DSGL);
b2612722 4638 ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
1ac0f095
KS		 4639 1, params, val);
4640 adap->params.ulptx_memwrite_dsgl = (ret == 0 && val[0] != 0);
4641 }
4642
086de575
SW		 4643 /* See if FW supports FW_RI_FR_NSMR_TPTE_WR work request */
4644 params[0] = FW_PARAM_DEV(RI_FR_NSMR_TPTE_WR);
4645 ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
4646 1, params, val);
4647 adap->params.fr_nsmr_tpte_wr_support = (ret == 0 && val[0] != 0);
4648
0ff90994
KS		 4649 /* See if FW supports FW_FILTER2 work request */
4650 if (is_t4(adap->params.chip)) {
4651 adap->params.filter2_wr_support = 0;
4652 } else {
4653 params[0] = FW_PARAM_DEV(FILTER2_WR);
4654 ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
4655 1, params, val);
4656 adap->params.filter2_wr_support = (ret == 0 && val[0] != 0);
4657 }
4658
02d805dc
SR		 4659 /* Check if FW supports returning vin and smt index.
4660 * If this is not supported, driver will interpret
4661 * these values from viid.
4662 */
4663 params[0] = FW_PARAM_DEV(OPAQUE_VIID_SMT_EXTN);
4664 ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
4665 1, params, val);
4666 adap->params.viid_smt_extn_support = (ret == 0 && val[0] != 0);
4667
636f9d37
VP		 4668 /*
4669 * Get device capabilities so we can determine what resources we need
4670 * to manage.
4671 */
4672 memset(&caps_cmd, 0, sizeof(caps_cmd));
e2ac9628
HS		 4673 caps_cmd.op_to_write = htonl(FW_CMD_OP_V(FW_CAPS_CONFIG_CMD) |
4674 FW_CMD_REQUEST_F | FW_CMD_READ_F);
ce91a923 4675 caps_cmd.cfvalid_to_len16 = htonl(FW_LEN16(caps_cmd));
636f9d37
VP		 4676 ret = t4_wr_mbox(adap, adap->mbox, &caps_cmd, sizeof(caps_cmd),
4677 &caps_cmd);
4678 if (ret < 0)
4679 goto bye;
4680
74dd5aa1
VK		 4681 /* hash filter has some mandatory register settings to be tested and for
4682 * that it needs to test whether offload is enabled or not, hence
4683 * checking and setting it here.
4684 */
4685 if (caps_cmd.ofldcaps)
4686 adap->params.offload = 1;
4687
5c31254e
KS		 4688 if (caps_cmd.ofldcaps ||
4689 (caps_cmd.niccaps & htons(FW_CAPS_CONFIG_NIC_HASHFILTER))) {
b8ff05a9
DM		 4690 /* query offload-related parameters */
4691 params[0] = FW_PARAM_DEV(NTID);
4692 params[1] = FW_PARAM_PFVF(SERVER_START);
4693 params[2] = FW_PARAM_PFVF(SERVER_END);
4694 params[3] = FW_PARAM_PFVF(TDDP_START);
4695 params[4] = FW_PARAM_PFVF(TDDP_END);
4696 params[5] = FW_PARAM_DEV(FLOWC_BUFFIFO_SZ);
b2612722 4697 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 6,
636f9d37 4698 params, val);
b8ff05a9
DM		 4699 if (ret < 0)
4700 goto bye;
4701 adap->tids.ntids = val[0];
4702 adap->tids.natids = min(adap->tids.ntids / 2, MAX_ATIDS);
4703 adap->tids.stid_base = val[1];
4704 adap->tids.nstids = val[2] - val[1] + 1;
636f9d37 4705 /*
dbedd44e 4706 * Setup server filter region. Divide the available filter
636f9d37
VP		 4707 * region into two parts. Regular filters get 1/3rd and server
4708 * filters get 2/3rd part. This is only enabled if workarond
4709 * path is enabled.
4710 * 1. For regular filters.
4711 * 2. Server filter: This are special filters which are used
4712 * to redirect SYN packets to offload queue.
4713 */
80f61f19 4714 if (adap->flags & CXGB4_FW_OFLD_CONN && !is_bypass(adap)) {
636f9d37
VP		 4715 adap->tids.sftid_base = adap->tids.ftid_base +
4716 DIV_ROUND_UP(adap->tids.nftids, 3);
4717 adap->tids.nsftids = adap->tids.nftids -
4718 DIV_ROUND_UP(adap->tids.nftids, 3);
4719 adap->tids.nftids = adap->tids.sftid_base -
4720 adap->tids.ftid_base;
4721 }
b8ff05a9
DM		 4722 adap->vres.ddp.start = val[3];
4723 adap->vres.ddp.size = val[4] - val[3] + 1;
4724 adap->params.ofldq_wr_cred = val[5];
636f9d37 4725
5c31254e 4726 if (caps_cmd.niccaps & htons(FW_CAPS_CONFIG_NIC_HASHFILTER)) {
74dd5aa1 4727 init_hash_filter(adap);
5c31254e 4728 } else {
5c31254e
KS		 4729 adap->num_ofld_uld += 1;
4730 }
b8ff05a9 4731 }
636f9d37 4732 if (caps_cmd.rdmacaps) {
b8ff05a9
DM		 4733 params[0] = FW_PARAM_PFVF(STAG_START);
4734 params[1] = FW_PARAM_PFVF(STAG_END);
4735 params[2] = FW_PARAM_PFVF(RQ_START);
4736 params[3] = FW_PARAM_PFVF(RQ_END);
4737 params[4] = FW_PARAM_PFVF(PBL_START);
4738 params[5] = FW_PARAM_PFVF(PBL_END);
b2612722 4739 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 6,
636f9d37 4740 params, val);
b8ff05a9
DM		 4741 if (ret < 0)
4742 goto bye;
4743 adap->vres.stag.start = val[0];
4744 adap->vres.stag.size = val[1] - val[0] + 1;
4745 adap->vres.rq.start = val[2];
4746 adap->vres.rq.size = val[3] - val[2] + 1;
4747 adap->vres.pbl.start = val[4];
4748 adap->vres.pbl.size = val[5] - val[4] + 1;
a0881cab 4749
c68644ef
RR		 4750 params[0] = FW_PARAM_PFVF(SRQ_START);
4751 params[1] = FW_PARAM_PFVF(SRQ_END);
4752 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2,
4753 params, val);
4754 if (!ret) {
4755 adap->vres.srq.start = val[0];
4756 adap->vres.srq.size = val[1] - val[0] + 1;
4757 }
4758 if (adap->vres.srq.size) {
4759 adap->srq = t4_init_srq(adap->vres.srq.size);
4760 if (!adap->srq)
4761 dev_warn(&adap->pdev->dev, "could not allocate SRQ, continuing\n");
4762 }
4763
a0881cab
DM		 4764 params[0] = FW_PARAM_PFVF(SQRQ_START);
4765 params[1] = FW_PARAM_PFVF(SQRQ_END);
4766 params[2] = FW_PARAM_PFVF(CQ_START);
4767 params[3] = FW_PARAM_PFVF(CQ_END);
1ae970e0
DM		 4768 params[4] = FW_PARAM_PFVF(OCQ_START);
4769 params[5] = FW_PARAM_PFVF(OCQ_END);
b2612722 4770 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 6, params,
5c937dd3 4771 val);
a0881cab
DM		 4772 if (ret < 0)
4773 goto bye;
4774 adap->vres.qp.start = val[0];
4775 adap->vres.qp.size = val[1] - val[0] + 1;
4776 adap->vres.cq.start = val[2];
4777 adap->vres.cq.size = val[3] - val[2] + 1;
1ae970e0
DM		 4778 adap->vres.ocq.start = val[4];
4779 adap->vres.ocq.size = val[5] - val[4] + 1;
4c2c5763
HS		 4780
4781 params[0] = FW_PARAM_DEV(MAXORDIRD_QP);
4782 params[1] = FW_PARAM_DEV(MAXIRD_ADAPTER);
b2612722 4783 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2, params,
5c937dd3 4784 val);
4c2c5763
HS		 4785 if (ret < 0) {
4786 adap->params.max_ordird_qp = 8;
4787 adap->params.max_ird_adapter = 32 * adap->tids.ntids;
4788 ret = 0;
4789 } else {
4790 adap->params.max_ordird_qp = val[0];
4791 adap->params.max_ird_adapter = val[1];
4792 }
4793 dev_info(adap->pdev_dev,
4794 "max_ordird_qp %d max_ird_adapter %d\n",
4795 adap->params.max_ordird_qp,
4796 adap->params.max_ird_adapter);
43db9296
RR		 4797
4798 /* Enable write_with_immediate if FW supports it */
4799 params[0] = FW_PARAM_DEV(RDMA_WRITE_WITH_IMM);
4800 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params,
4801 val);
4802 adap->params.write_w_imm_support = (ret == 0 && val[0] != 0);
f3910c62
RR		 4803
4804 /* Enable write_cmpl if FW supports it */
4805 params[0] = FW_PARAM_DEV(RI_WRITE_CMPL_WR);
4806 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 1, params,
4807 val);
4808 adap->params.write_cmpl_support = (ret == 0 && val[0] != 0);
0fbc81b3 4809 adap->num_ofld_uld += 2;
b8ff05a9 4810 }
636f9d37 4811 if (caps_cmd.iscsicaps) {
b8ff05a9
DM		 4812 params[0] = FW_PARAM_PFVF(ISCSI_START);
4813 params[1] = FW_PARAM_PFVF(ISCSI_END);
b2612722 4814 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2,
636f9d37 4815 params, val);
b8ff05a9
DM		 4816 if (ret < 0)
4817 goto bye;
4818 adap->vres.iscsi.start = val[0];
4819 adap->vres.iscsi.size = val[1] - val[0] + 1;
a248384e
VP		 4820 if (is_t6(adap->params.chip)) {
4821 params[0] = FW_PARAM_PFVF(PPOD_EDRAM_START);
4822 params[1] = FW_PARAM_PFVF(PPOD_EDRAM_END);
4823 ret = t4_query_params(adap, adap->mbox, adap->pf, 0, 2,
4824 params, val);
4825 if (!ret) {
4826 adap->vres.ppod_edram.start = val[0];
4827 adap->vres.ppod_edram.size =
4828 val[1] - val[0] + 1;
4829
4830 dev_info(adap->pdev_dev,
4831 "ppod edram start 0x%x end 0x%x size 0x%x\n",
4832 val[0], val[1],
4833 adap->vres.ppod_edram.size);
4834 }
4835 }
0fbc81b3
HS		 4836 /* LIO target and cxgb4i initiaitor */
4837 adap->num_ofld_uld += 2;
b8ff05a9 4838 }
94cdb8bb 4839 if (caps_cmd.cryptocaps) {
e383f248
AG		 4840 if (ntohs(caps_cmd.cryptocaps) &
4841 FW_CAPS_CONFIG_CRYPTO_LOOKASIDE) {
4842 params[0] = FW_PARAM_PFVF(NCRYPTO_LOOKASIDE);
4843 ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
4844 2, params, val);
4845 if (ret < 0) {
4846 if (ret != -EINVAL)
4847 goto bye;
4848 } else {
4849 adap->vres.ncrypto_fc = val[0];
4850 }
4851 adap->num_ofld_uld += 1;
4852 }
4853 if (ntohs(caps_cmd.cryptocaps) &
4854 FW_CAPS_CONFIG_TLS_INLINE) {
4855 params[0] = FW_PARAM_PFVF(TLS_START);
4856 params[1] = FW_PARAM_PFVF(TLS_END);
4857 ret = t4_query_params(adap, adap->mbox, adap->pf, 0,
4858 2, params, val);
4859 if (ret < 0)
72a56ca9 4860 goto bye;
e383f248
AG		 4861 adap->vres.key.start = val[0];
4862 adap->vres.key.size = val[1] - val[0] + 1;
4863 adap->num_uld += 1;
72a56ca9 4864 }
a6ec572b 4865 adap->params.crypto = ntohs(caps_cmd.cryptocaps);
94cdb8bb 4866 }
b8ff05a9
DM		 4867#undef FW_PARAM_PFVF
4868#undef FW_PARAM_DEV
4869
92e7ae71
HS		 4870 /* The MTU/MSS Table is initialized by now, so load their values. If
4871 * we're initializing the adapter, then we'll make any modifications
4872 * we want to the MTU/MSS Table and also initialize the congestion
4873 * parameters.
636f9d37 4874 */
b8ff05a9 4875 t4_read_mtu_tbl(adap, adap->params.mtus, NULL);
92e7ae71
HS		 4876 if (state != DEV_STATE_INIT) {
4877 int i;
4878
4879 /* The default MTU Table contains values 1492 and 1500.
4880 * However, for TCP, it's better to have two values which are
4881 * a multiple of 8 +/- 4 bytes apart near this popular MTU.
4882 * This allows us to have a TCP Data Payload which is a
4883 * multiple of 8 regardless of what combination of TCP Options
4884 * are in use (always a multiple of 4 bytes) which is
4885 * important for performance reasons. For instance, if no
4886 * options are in use, then we have a 20-byte IP header and a
4887 * 20-byte TCP header. In this case, a 1500-byte MSS would
4888 * result in a TCP Data Payload of 1500 - 40 == 1460 bytes
4889 * which is not a multiple of 8. So using an MSS of 1488 in
4890 * this case results in a TCP Data Payload of 1448 bytes which
4891 * is a multiple of 8. On the other hand, if 12-byte TCP Time
4892 * Stamps have been negotiated, then an MTU of 1500 bytes
4893 * results in a TCP Data Payload of 1448 bytes which, as
4894 * above, is a multiple of 8 bytes ...
4895 */
4896 for (i = 0; i < NMTUS; i++)
4897 if (adap->params.mtus[i] == 1492) {
4898 adap->params.mtus[i] = 1488;
4899 break;
4900 }
7ee9ff94 4901
92e7ae71
HS		 4902 t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
4903 adap->params.b_wnd);
4904 }
df64e4d3 4905 t4_init_sge_params(adap);
80f61f19 4906 adap->flags |= CXGB4_FW_OK;
5ccf9d04 4907 t4_init_tp_params(adap, true);
b8ff05a9
DM		 4908 return 0;
4909
4910 /*
636f9d37
VP		 4911 * Something bad happened. If a command timed out or failed with EIO
4912 * FW does not operate within its spec or something catastrophic
4913 * happened to HW/FW, stop issuing commands.
b8ff05a9 4914 */
636f9d37 4915bye:
8b4e6b3c 4916 adap_free_hma_mem(adap);
4b8e27a8
HS		 4917 kfree(adap->sge.egr_map);
4918 kfree(adap->sge.ingr_map);
4919 kfree(adap->sge.starving_fl);
4920 kfree(adap->sge.txq_maperr);
5b377d11
HS		 4921#ifdef CONFIG_DEBUG_FS
4922 kfree(adap->sge.blocked_fl);
4923#endif
636f9d37
VP		 4924 if (ret != -ETIMEDOUT && ret != -EIO)
4925 t4_fw_bye(adap, adap->mbox);
b8ff05a9
DM		 4926 return ret;
4927}
4928
204dc3c0
DM		 4929/* EEH callbacks */
4930
4931static pci_ers_result_t eeh_err_detected(struct pci_dev *pdev,
4932 pci_channel_state_t state)
4933{
4934 int i;
4935 struct adapter *adap = pci_get_drvdata(pdev);
4936
4937 if (!adap)
4938 goto out;
4939
4940 rtnl_lock();
80f61f19 4941 adap->flags &= ~CXGB4_FW_OK;
204dc3c0 4942 notify_ulds(adap, CXGB4_STATE_START_RECOVERY);
9fe6cb58 4943 spin_lock(&adap->stats_lock);
204dc3c0
DM		 4944 for_each_port(adap, i) {
4945 struct net_device *dev = adap->port[i];
025d0973
GP		 4946 if (dev) {
4947 netif_device_detach(dev);
4948 netif_carrier_off(dev);
4949 }
204dc3c0 4950 }
9fe6cb58 4951 spin_unlock(&adap->stats_lock);
b37987e8 4952 disable_interrupts(adap);
80f61f19 4953 if (adap->flags & CXGB4_FULL_INIT_DONE)
204dc3c0
DM		 4954 cxgb_down(adap);
4955 rtnl_unlock();
80f61f19 4956 if ((adap->flags & CXGB4_DEV_ENABLED)) {
144be3d9 4957 pci_disable_device(pdev);
80f61f19 4958 adap->flags &= ~CXGB4_DEV_ENABLED;
144be3d9 4959 }
204dc3c0
DM		 4960out: return state == pci_channel_io_perm_failure ?
4961 PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET;
4962}
4963
4964static pci_ers_result_t eeh_slot_reset(struct pci_dev *pdev)
4965{
4966 int i, ret;
4967 struct fw_caps_config_cmd c;
4968 struct adapter *adap = pci_get_drvdata(pdev);
4969
4970 if (!adap) {
4971 pci_restore_state(pdev);
4972 pci_save_state(pdev);
4973 return PCI_ERS_RESULT_RECOVERED;
4974 }
4975
80f61f19 4976 if (!(adap->flags & CXGB4_DEV_ENABLED)) {
144be3d9
GS		 4977 if (pci_enable_device(pdev)) {
4978 dev_err(&pdev->dev, "Cannot reenable PCI "
4979 "device after reset\n");
4980 return PCI_ERS_RESULT_DISCONNECT;
4981 }
80f61f19 4982 adap->flags |= CXGB4_DEV_ENABLED;
204dc3c0
DM		 4983 }
4984
4985 pci_set_master(pdev);
4986 pci_restore_state(pdev);
4987 pci_save_state(pdev);
204dc3c0 4988
8203b509 4989 if (t4_wait_dev_ready(adap->regs) < 0)
204dc3c0 4990 return PCI_ERS_RESULT_DISCONNECT;
b2612722 4991 if (t4_fw_hello(adap, adap->mbox, adap->pf, MASTER_MUST, NULL) < 0)
204dc3c0 4992 return PCI_ERS_RESULT_DISCONNECT;
80f61f19 4993 adap->flags |= CXGB4_FW_OK;
204dc3c0
DM		 4994 if (adap_init1(adap, &c))
4995 return PCI_ERS_RESULT_DISCONNECT;
4996
4997 for_each_port(adap, i) {
02d805dc
SR		 4998 struct port_info *pi = adap2pinfo(adap, i);
4999 u8 vivld = 0, vin = 0;
204dc3c0 5000
02d805dc
SR		 5001 ret = t4_alloc_vi(adap, adap->mbox, pi->tx_chan, adap->pf, 0, 1,
5002 NULL, NULL, &vivld, &vin);
204dc3c0
DM		 5003 if (ret < 0)
5004 return PCI_ERS_RESULT_DISCONNECT;
02d805dc
SR		 5005 pi->viid = ret;
5006 pi->xact_addr_filt = -1;
5007 /* If fw supports returning the VIN as part of FW_VI_CMD,
5008 * save the returned values.
5009 */
5010 if (adap->params.viid_smt_extn_support) {
5011 pi->vivld = vivld;
5012 pi->vin = vin;
5013 } else {
5014 /* Retrieve the values from VIID */
5015 pi->vivld = FW_VIID_VIVLD_G(pi->viid);
5016 pi->vin = FW_VIID_VIN_G(pi->viid);
5017 }
204dc3c0
DM		 5018 }
5019
5020 t4_load_mtus(adap, adap->params.mtus, adap->params.a_wnd,
5021 adap->params.b_wnd);
1ae970e0 5022 setup_memwin(adap);
204dc3c0
DM		 5023 if (cxgb_up(adap))
5024 return PCI_ERS_RESULT_DISCONNECT;
5025 return PCI_ERS_RESULT_RECOVERED;
5026}
5027
5028static void eeh_resume(struct pci_dev *pdev)
5029{
5030 int i;
5031 struct adapter *adap = pci_get_drvdata(pdev);
5032
5033 if (!adap)
5034 return;
5035
5036 rtnl_lock();
5037 for_each_port(adap, i) {
5038 struct net_device *dev = adap->port[i];
025d0973
GP		 5039 if (dev) {
5040 if (netif_running(dev)) {
5041 link_start(dev);
5042 cxgb_set_rxmode(dev);
5043 }
5044 netif_device_attach(dev);
204dc3c0 5045 }
204dc3c0
DM		 5046 }
5047 rtnl_unlock();
5048}
5049
3646f0e5 5050static const struct pci_error_handlers cxgb4_eeh = {
204dc3c0
DM		 5051 .error_detected = eeh_err_detected,
5052 .slot_reset = eeh_slot_reset,
5053 .resume = eeh_resume,
5054};
5055
9b86a8d1
HS		 5056/* Return true if the Link Configuration supports "High Speeds" (those greater
5057 * than 1Gb/s).
5058 */
57d8b764 5059static inline bool is_x_10g_port(const struct link_config *lc)
b8ff05a9 5060{
9b86a8d1
HS		 5061 unsigned int speeds, high_speeds;
5062
c3168cab
GG		 5063 speeds = FW_PORT_CAP32_SPEED_V(FW_PORT_CAP32_SPEED_G(lc->pcaps));
5064 high_speeds = speeds &
5065 ~(FW_PORT_CAP32_SPEED_100M | FW_PORT_CAP32_SPEED_1G);
9b86a8d1
HS		 5066
5067 return high_speeds != 0;
b8ff05a9
DM		 5068}
5069
b8ff05a9
DM		 5070/*
5071 * Perform default configuration of DMA queues depending on the number and type
5072 * of ports we found and the number of available CPUs. Most settings can be
5073 * modified by the admin prior to actual use.
5074 */
0eaec62a 5075static int cfg_queues(struct adapter *adap)
b8ff05a9
DM		 5076{
5077 struct sge *s = &adap->sge;
0eaec62a
CL		 5078 int i, n10g = 0, qidx = 0;
5079 int niqflint, neq, avail_eth_qsets;
5080 int max_eth_qsets = 32;
688848b1
AB		 5081#ifndef CONFIG_CHELSIO_T4_DCB
5082 int q10g = 0;
5083#endif
b8ff05a9 5084
94cdb8bb
HS		 5085 /* Reduce memory usage in kdump environment, disable all offload.
5086 */
85eacf3f 5087 if (is_kdump_kernel() || (is_uld(adap) && t4_uld_mem_alloc(adap))) {
0fbc81b3 5088 adap->params.offload = 0;
94cdb8bb
HS		 5089 adap->params.crypto = 0;
5090 }
5091
0eaec62a
CL		 5092 /* Calculate the number of Ethernet Queue Sets available based on
5093 * resources provisioned for us. We always have an Asynchronous
5094 * Firmware Event Ingress Queue. If we're operating in MSI or Legacy
5095 * IRQ Pin Interrupt mode, then we'll also have a Forwarded Interrupt
5096 * Ingress Queue. Meanwhile, we need two Egress Queues for each
5097 * Queue Set: one for the Free List and one for the Ethernet TX Queue.
5098 *
5099 * Note that we should also take into account all of the various
5100 * Offload Queues. But, in any situation where we're operating in
5101 * a Resource Constrained Provisioning environment, doing any Offload
5102 * at all is problematic ...
5103 */
5104 niqflint = adap->params.pfres.niqflint - 1;
80f61f19 5105 if (!(adap->flags & CXGB4_USING_MSIX))
0eaec62a
CL		 5106 niqflint--;
5107 neq = adap->params.pfres.neq / 2;
5108 avail_eth_qsets = min(niqflint, neq);
5109
5110 if (avail_eth_qsets > max_eth_qsets)
5111 avail_eth_qsets = max_eth_qsets;
5112
5113 if (avail_eth_qsets < adap->params.nports) {
5114 dev_err(adap->pdev_dev, "avail_eth_qsets=%d < nports=%d\n",
5115 avail_eth_qsets, adap->params.nports);
5116 return -ENOMEM;
5117 }
5118
5119 /* Count the number of 10Gb/s or better ports */
5120 for_each_port(adap, i)
5121 n10g += is_x_10g_port(&adap2pinfo(adap, i)->link_cfg);
5122
688848b1
AB		 5123#ifdef CONFIG_CHELSIO_T4_DCB
5124 /* For Data Center Bridging support we need to be able to support up
5125 * to 8 Traffic Priorities; each of which will be assigned to its
5126 * own TX Queue in order to prevent Head-Of-Line Blocking.
5127 */
0eaec62a
CL		 5128 if (adap->params.nports * 8 > avail_eth_qsets) {
5129 dev_err(adap->pdev_dev, "DCB avail_eth_qsets=%d < %d!\n",
5130 avail_eth_qsets, adap->params.nports * 8);
5131 return -ENOMEM;
688848b1 5132 }
b8ff05a9 5133
688848b1
AB		 5134 for_each_port(adap, i) {
5135 struct port_info *pi = adap2pinfo(adap, i);
5136
5137 pi->first_qset = qidx;
85eacf3f 5138 pi->nqsets = is_kdump_kernel() ? 1 : 8;
688848b1
AB		 5139 qidx += pi->nqsets;
5140 }
5141#else /* !CONFIG_CHELSIO_T4_DCB */
b8ff05a9
DM		 5142 /*
5143 * We default to 1 queue per non-10G port and up to # of cores queues
5144 * per 10G port.
5145 */
5146 if (n10g)
0eaec62a 5147 q10g = (avail_eth_qsets - (adap->params.nports - n10g)) / n10g;
5952dde7
YM		 5148 if (q10g > netif_get_num_default_rss_queues())
5149 q10g = netif_get_num_default_rss_queues();
b8ff05a9 5150
85eacf3f
GG		 5151 if (is_kdump_kernel())
5152 q10g = 1;
5153
b8ff05a9
DM		 5154 for_each_port(adap, i) {
5155 struct port_info *pi = adap2pinfo(adap, i);
5156
5157 pi->first_qset = qidx;
57d8b764 5158 pi->nqsets = is_x_10g_port(&pi->link_cfg) ? q10g : 1;
b8ff05a9
DM		 5159 qidx += pi->nqsets;
5160 }
688848b1 5161#endif /* !CONFIG_CHELSIO_T4_DCB */
b8ff05a9
DM		 5162
5163 s->ethqsets = qidx;
5164 s->max_ethqsets = qidx; /* MSI-X may lower it later */
5165
0fbc81b3 5166 if (is_uld(adap)) {
b8ff05a9
DM		 5167 /*
5168 * For offload we use 1 queue/channel if all ports are up to 1G,
5169 * otherwise we divide all available queues amongst the channels
5170 * capped by the number of available cores.
5171 */
5172 if (n10g) {
a56177e1 5173 i = min_t(int, MAX_OFLD_QSETS, num_online_cpus());
0fbc81b3
HS		 5174 s->ofldqsets = roundup(i, adap->params.nports);
5175 } else {
5176 s->ofldqsets = adap->params.nports;
5177 }
b8ff05a9
DM		 5178 }
5179
5180 for (i = 0; i < ARRAY_SIZE(s->ethrxq); i++) {
5181 struct sge_eth_rxq *r = &s->ethrxq[i];
5182
c887ad0e 5183 init_rspq(adap, &r->rspq, 5, 10, 1024, 64);
b8ff05a9
DM		 5184 r->fl.size = 72;
5185 }
5186
5187 for (i = 0; i < ARRAY_SIZE(s->ethtxq); i++)
5188 s->ethtxq[i].q.size = 1024;
5189
5190 for (i = 0; i < ARRAY_SIZE(s->ctrlq); i++)
5191 s->ctrlq[i].q.size = 512;
5192
a4569504
AG		 5193 if (!is_t4(adap->params.chip))
5194 s->ptptxq.q.size = 8;
5195
c887ad0e 5196 init_rspq(adap, &s->fw_evtq, 0, 1, 1024, 64);
0fbc81b3 5197 init_rspq(adap, &s->intrq, 0, 1, 512, 64);
0eaec62a
CL		 5198
5199 return 0;
b8ff05a9
DM		 5200}
5201
5202/*
5203 * Reduce the number of Ethernet queues across all ports to at most n.
5204 * n provides at least one queue per port.
5205 */
91744948 5206static void reduce_ethqs(struct adapter *adap, int n)
b8ff05a9
DM		 5207{
5208 int i;
5209 struct port_info *pi;
5210
5211 while (n < adap->sge.ethqsets)
5212 for_each_port(adap, i) {
5213 pi = adap2pinfo(adap, i);
5214 if (pi->nqsets > 1) {
5215 pi->nqsets--;
5216 adap->sge.ethqsets--;
5217 if (adap->sge.ethqsets <= n)
5218 break;
5219 }
5220 }
5221
5222 n = 0;
5223 for_each_port(adap, i) {
5224 pi = adap2pinfo(adap, i);
5225 pi->first_qset = n;
5226 n += pi->nqsets;
5227 }
5228}
5229
94cdb8bb
HS		 5230static int get_msix_info(struct adapter *adap)
5231{
5232 struct uld_msix_info *msix_info;
0fbc81b3
HS		 5233 unsigned int max_ingq = 0;
5234
5235 if (is_offload(adap))
5236 max_ingq += MAX_OFLD_QSETS * adap->num_ofld_uld;
5237 if (is_pci_uld(adap))
5238 max_ingq += MAX_OFLD_QSETS * adap->num_uld;
5239
5240 if (!max_ingq)
5241 goto out;
94cdb8bb
HS		 5242
5243 msix_info = kcalloc(max_ingq, sizeof(*msix_info), GFP_KERNEL);
5244 if (!msix_info)
5245 return -ENOMEM;
5246
5247 adap->msix_bmap_ulds.msix_bmap = kcalloc(BITS_TO_LONGS(max_ingq),
5248 sizeof(long), GFP_KERNEL);
5249 if (!adap->msix_bmap_ulds.msix_bmap) {
5250 kfree(msix_info);
5251 return -ENOMEM;
5252 }
5253 spin_lock_init(&adap->msix_bmap_ulds.lock);
5254 adap->msix_info_ulds = msix_info;
0fbc81b3 5255out:
94cdb8bb
HS		 5256 return 0;
5257}
5258
5259static void free_msix_info(struct adapter *adap)
5260{
0fbc81b3 5261 if (!(adap->num_uld && adap->num_ofld_uld))
94cdb8bb
HS		 5262 return;
5263
5264 kfree(adap->msix_info_ulds);
5265 kfree(adap->msix_bmap_ulds.msix_bmap);
5266}
5267
b8ff05a9
DM		 5268/* 2 MSI-X vectors needed for the FW queue and non-data interrupts */
5269#define EXTRA_VECS 2
5270
91744948 5271static int enable_msix(struct adapter *adap)
b8ff05a9 5272{
94cdb8bb
HS		 5273 int ofld_need = 0, uld_need = 0;
5274 int i, j, want, need, allocated;
b8ff05a9
DM		 5275 struct sge *s = &adap->sge;
5276 unsigned int nchan = adap->params.nports;
f36e58e5 5277 struct msix_entry *entries;
94cdb8bb 5278 int max_ingq = MAX_INGQ;
f36e58e5 5279
0fbc81b3
HS		 5280 if (is_pci_uld(adap))
5281 max_ingq += (MAX_OFLD_QSETS * adap->num_uld);
5282 if (is_offload(adap))
5283 max_ingq += (MAX_OFLD_QSETS * adap->num_ofld_uld);
6da2ec56
KC		 5284 entries = kmalloc_array(max_ingq + 1, sizeof(*entries),
5285 GFP_KERNEL);
f36e58e5
HS		 5286 if (!entries)
5287 return -ENOMEM;
b8ff05a9 5288
94cdb8bb 5289 /* map for msix */
0fbc81b3
HS		 5290 if (get_msix_info(adap)) {
5291 adap->params.offload = 0;
94cdb8bb 5292 adap->params.crypto = 0;
0fbc81b3 5293 }
94cdb8bb
HS		 5294
5295 for (i = 0; i < max_ingq + 1; ++i)
b8ff05a9
DM		 5296 entries[i].entry = i;
5297
5298 want = s->max_ethqsets + EXTRA_VECS;
5299 if (is_offload(adap)) {
0fbc81b3
HS		 5300 want += adap->num_ofld_uld * s->ofldqsets;
5301 ofld_need = adap->num_ofld_uld * nchan;
b8ff05a9 5302 }
94cdb8bb 5303 if (is_pci_uld(adap)) {
0fbc81b3
HS		 5304 want += adap->num_uld * s->ofldqsets;
5305 uld_need = adap->num_uld * nchan;
94cdb8bb 5306 }
688848b1
AB		 5307#ifdef CONFIG_CHELSIO_T4_DCB
5308 /* For Data Center Bridging we need 8 Ethernet TX Priority Queues for
5309 * each port.
5310 */
94cdb8bb 5311 need = 8 * adap->params.nports + EXTRA_VECS + ofld_need + uld_need;
688848b1 5312#else
94cdb8bb 5313 need = adap->params.nports + EXTRA_VECS + ofld_need + uld_need;
688848b1 5314#endif
f36e58e5
HS		 5315 allocated = pci_enable_msix_range(adap->pdev, entries, need, want);
5316 if (allocated < 0) {
5317 dev_info(adap->pdev_dev, "not enough MSI-X vectors left,"
5318 " not using MSI-X\n");
5319 kfree(entries);
5320 return allocated;
5321 }
b8ff05a9 5322
f36e58e5 5323 /* Distribute available vectors to the various queue groups.
c32ad224
AG		 5324 * Every group gets its minimum requirement and NIC gets top
5325 * priority for leftovers.
5326 */
94cdb8bb 5327 i = allocated - EXTRA_VECS - ofld_need - uld_need;
c32ad224
AG		 5328 if (i < s->max_ethqsets) {
5329 s->max_ethqsets = i;
5330 if (i < s->ethqsets)
5331 reduce_ethqs(adap, i);
5332 }
0fbc81b3 5333 if (is_uld(adap)) {
94cdb8bb
HS		 5334 if (allocated < want)
5335 s->nqs_per_uld = nchan;
5336 else
0fbc81b3 5337 s->nqs_per_uld = s->ofldqsets;
94cdb8bb
HS		 5338 }
5339
0fbc81b3 5340 for (i = 0; i < (s->max_ethqsets + EXTRA_VECS); ++i)
c32ad224 5341 adap->msix_info[i].vec = entries[i].vector;
0fbc81b3
HS		 5342 if (is_uld(adap)) {
5343 for (j = 0 ; i < allocated; ++i, j++) {
94cdb8bb 5344 adap->msix_info_ulds[j].vec = entries[i].vector;
0fbc81b3
HS		 5345 adap->msix_info_ulds[j].idx = i;
5346 }
94cdb8bb
HS		 5347 adap->msix_bmap_ulds.mapsize = j;
5348 }
43eb4e82 5349 dev_info(adap->pdev_dev, "%d MSI-X vectors allocated, "
0fbc81b3
HS		 5350 "nic %d per uld %d\n",
5351 allocated, s->max_ethqsets, s->nqs_per_uld);
c32ad224 5352
f36e58e5 5353 kfree(entries);
c32ad224 5354 return 0;
b8ff05a9
DM		 5355}
5356
5357#undef EXTRA_VECS
5358
91744948 5359static int init_rss(struct adapter *adap)
671b0060 5360{
c035e183
HS		 5361 unsigned int i;
5362 int err;
5363
5364 err = t4_init_rss_mode(adap, adap->mbox);
5365 if (err)
5366 return err;
671b0060
DM		 5367
5368 for_each_port(adap, i) {
5369 struct port_info *pi = adap2pinfo(adap, i);
5370
5371 pi->rss = kcalloc(pi->rss_size, sizeof(u16), GFP_KERNEL);
5372 if (!pi->rss)
5373 return -ENOMEM;
671b0060
DM		 5374 }
5375 return 0;
5376}
5377
0de72738
HS		 5378/* Dump basic information about the adapter */
5379static void print_adapter_info(struct adapter *adapter)
5380{
760446f9
GG		 5381 /* Hardware/Firmware/etc. Version/Revision IDs */
5382 t4_dump_version_info(adapter);
0de72738
HS		 5383
5384 /* Software/Hardware configuration */
5385 dev_info(adapter->pdev_dev, "Configuration: %sNIC %s, %s capable\n",
5386 is_offload(adapter) ? "R" : "",
80f61f19
AV		 5387 ((adapter->flags & CXGB4_USING_MSIX) ? "MSI-X" :
5388 (adapter->flags & CXGB4_USING_MSI) ? "MSI" : ""),
0de72738
HS		 5389 is_offload(adapter) ? "Offload" : "non-Offload");
5390}
5391
91744948 5392static void print_port_info(const struct net_device *dev)
b8ff05a9 5393{
b8ff05a9 5394 char buf[80];
118969ed 5395 char *bufp = buf;
118969ed
DM		 5396 const struct port_info *pi = netdev_priv(dev);
5397 const struct adapter *adap = pi->adapter;
f1a051b9 5398
c3168cab 5399 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_100M)
5e78f7fd 5400 bufp += sprintf(bufp, "100M/");
c3168cab 5401 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_1G)
5e78f7fd 5402 bufp += sprintf(bufp, "1G/");
c3168cab 5403 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_10G)
118969ed 5404 bufp += sprintf(bufp, "10G/");
c3168cab 5405 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_25G)
9b86a8d1 5406 bufp += sprintf(bufp, "25G/");
c3168cab 5407 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_40G)
72aca4bf 5408 bufp += sprintf(bufp, "40G/");
c3168cab
GG		 5409 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_50G)
5410 bufp += sprintf(bufp, "50G/");
5411 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_100G)
9b86a8d1 5412 bufp += sprintf(bufp, "100G/");
c3168cab
GG		 5413 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_200G)
5414 bufp += sprintf(bufp, "200G/");
5415 if (pi->link_cfg.pcaps & FW_PORT_CAP32_SPEED_400G)
5416 bufp += sprintf(bufp, "400G/");
118969ed
DM		 5417 if (bufp != buf)
5418 --bufp;
72aca4bf 5419 sprintf(bufp, "BASE-%s", t4_get_port_type_description(pi->port_type));
118969ed 5420
0de72738
HS		 5421 netdev_info(dev, "%s: Chelsio %s (%s) %s\n",
5422 dev->name, adap->params.vpd.id, adap->name, buf);
b8ff05a9
DM		 5423}
5424
06546391
DM		 5425/*
5426 * Free the following resources:
5427 * - memory used for tables
5428 * - MSI/MSI-X
5429 * - net devices
5430 * - resources FW is holding for us
5431 */
5432static void free_some_resources(struct adapter *adapter)
5433{
5434 unsigned int i;
5435
3bdb376e 5436 kvfree(adapter->smt);
752ade68 5437 kvfree(adapter->l2t);
c68644ef 5438 kvfree(adapter->srq);
b72a32da 5439 t4_cleanup_sched(adapter);
752ade68 5440 kvfree(adapter->tids.tid_tab);
e0f911c8 5441 cxgb4_cleanup_tc_flower(adapter);
d8931847 5442 cxgb4_cleanup_tc_u32(adapter);
4b8e27a8
HS		 5443 kfree(adapter->sge.egr_map);
5444 kfree(adapter->sge.ingr_map);
5445 kfree(adapter->sge.starving_fl);
5446 kfree(adapter->sge.txq_maperr);
5b377d11
HS		 5447#ifdef CONFIG_DEBUG_FS
5448 kfree(adapter->sge.blocked_fl);
5449#endif
06546391
DM		 5450 disable_msi(adapter);
5451
5452 for_each_port(adapter, i)
671b0060 5453 if (adapter->port[i]) {
4f3a0fcf
HS		 5454 struct port_info *pi = adap2pinfo(adapter, i);
5455
5456 if (pi->viid != 0)
5457 t4_free_vi(adapter, adapter->mbox, adapter->pf,
5458 0, pi->viid);
671b0060 5459 kfree(adap2pinfo(adapter, i)->rss);
06546391 5460 free_netdev(adapter->port[i]);
671b0060 5461 }
80f61f19 5462 if (adapter->flags & CXGB4_FW_OK)
b2612722 5463 t4_fw_bye(adapter, adapter->pf);
06546391
DM		 5464}
5465
2ed28baa 5466#define TSO_FLAGS (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
35d35682 5467#define VLAN_FEAT (NETIF_F_SG | NETIF_F_IP_CSUM | TSO_FLAGS | \
012475e3 5468 NETIF_F_GRO | NETIF_F_IPV6_CSUM | NETIF_F_HIGHDMA)
22adfe0a 5469#define SEGMENT_SIZE 128
b8ff05a9 5470
e8d45292 5471static int t4_get_chip_type(struct adapter *adap, int ver)
d86bd29e 5472{
e8d45292 5473 u32 pl_rev = REV_G(t4_read_reg(adap, PL_REV_A));
46cdc9be 5474
e8d45292 5475 switch (ver) {
d86bd29e 5476 case CHELSIO_T4:
46cdc9be 5477 return CHELSIO_CHIP_CODE(CHELSIO_T4, pl_rev);
d86bd29e 5478 case CHELSIO_T5:
46cdc9be 5479 return CHELSIO_CHIP_CODE(CHELSIO_T5, pl_rev);
d86bd29e 5480 case CHELSIO_T6:
46cdc9be 5481 return CHELSIO_CHIP_CODE(CHELSIO_T6, pl_rev);
d86bd29e 5482 default:
e8d45292 5483 break;
d86bd29e 5484 }
46cdc9be 5485 return -EINVAL;
d86bd29e
HS		 5486}
5487
b6244201 5488#ifdef CONFIG_PCI_IOV
baf50868 5489static void cxgb4_mgmt_setup(struct net_device *dev)
e7b48a32
HS		 5490{
5491 dev->type = ARPHRD_NONE;
5492 dev->mtu = 0;
5493 dev->hard_header_len = 0;
5494 dev->addr_len = 0;
5495 dev->tx_queue_len = 0;
5496 dev->flags |= IFF_NOARP;
5497 dev->priv_flags |= IFF_NO_QUEUE;
5498
5499 /* Initialize the device structure. */
5500 dev->netdev_ops = &cxgb4_mgmt_netdev_ops;
5501 dev->ethtool_ops = &cxgb4_mgmt_ethtool_ops;
e7b48a32
HS		 5502}
5503
b6244201
HS		 5504static int cxgb4_iov_configure(struct pci_dev *pdev, int num_vfs)
5505{
7829451c 5506 struct adapter *adap = pci_get_drvdata(pdev);
b6244201
HS		 5507 int err = 0;
5508 int current_vfs = pci_num_vf(pdev);
5509 u32 pcie_fw;
b6244201 5510
7829451c 5511 pcie_fw = readl(adap->regs + PCIE_FW_A);
7cfac881
AV		 5512 /* Check if fw is initialized */
5513 if (!(pcie_fw & PCIE_FW_INIT_F)) {
5514 dev_warn(&pdev->dev, "Device not initialized\n");
b6244201
HS		 5515 return -EOPNOTSUPP;
5516 }
5517
5518 /* If any of the VF's is already assigned to Guest OS, then
5519 * SRIOV for the same cannot be modified
5520 */
5521 if (current_vfs && pci_vfs_assigned(pdev)) {
5522 dev_err(&pdev->dev,
5523 "Cannot modify SR-IOV while VFs are assigned\n");
baf50868 5524 return current_vfs;
b6244201 5525 }
baf50868
GG		 5526 /* Note that the upper-level code ensures that we're never called with
5527 * a non-zero "num_vfs" when we already have VFs instantiated. But
5528 * it never hurts to code defensively.
b6244201 5529 */
baf50868
GG		 5530 if (num_vfs != 0 && current_vfs != 0)
5531 return -EBUSY;
5532
5533 /* Nothing to do for no change. */
5534 if (num_vfs == current_vfs)
5535 return num_vfs;
5536
5537 /* Disable SRIOV when zero is passed. */
b6244201
HS		 5538 if (!num_vfs) {
5539 pci_disable_sriov(pdev);
baf50868
GG		 5540 /* free VF Management Interface */
5541 unregister_netdev(adap->port[0]);
5542 free_netdev(adap->port[0]);
5543 adap->port[0] = NULL;
5544
661dbeb9 5545 /* free VF resources */
baf50868 5546 adap->num_vfs = 0;
661dbeb9
HS		 5547 kfree(adap->vfinfo);
5548 adap->vfinfo = NULL;
baf50868 5549 return 0;
b6244201
HS		 5550 }
5551
baf50868
GG		 5552 if (!current_vfs) {
5553 struct fw_pfvf_cmd port_cmd, port_rpl;
5554 struct net_device *netdev;
5555 unsigned int pmask, port;
5556 struct pci_dev *pbridge;
5557 struct port_info *pi;
5558 char name[IFNAMSIZ];
5559 u32 devcap2;
5560 u16 flags;
5561 int pos;
5562
5563 /* If we want to instantiate Virtual Functions, then our
5564 * parent bridge's PCI-E needs to support Alternative Routing
5565 * ID (ARI) because our VFs will show up at function offset 8
5566 * and above.
5567 */
5568 pbridge = pdev->bus->self;
5569 pos = pci_find_capability(pbridge, PCI_CAP_ID_EXP);
5570 pci_read_config_word(pbridge, pos + PCI_EXP_FLAGS, &flags);
5571 pci_read_config_dword(pbridge, pos + PCI_EXP_DEVCAP2, &devcap2);
5572
5573 if ((flags & PCI_EXP_FLAGS_VERS) < 2 ||
5574 !(devcap2 & PCI_EXP_DEVCAP2_ARI)) {
5575 /* Our parent bridge does not support ARI so issue a
5576 * warning and skip instantiating the VFs. They
5577 * won't be reachable.
5578 */
5579 dev_warn(&pdev->dev, "Parent bridge %02x:%02x.%x doesn't support ARI; can't instantiate Virtual Functions\n",
5580 pbridge->bus->number, PCI_SLOT(pbridge->devfn),
5581 PCI_FUNC(pbridge->devfn));
5582 return -ENOTSUPP;
5583 }
5584 memset(&port_cmd, 0, sizeof(port_cmd));
5585 port_cmd.op_to_vfn = cpu_to_be32(FW_CMD_OP_V(FW_PFVF_CMD) |
5586 FW_CMD_REQUEST_F |
5587 FW_CMD_READ_F |
5588 FW_PFVF_CMD_PFN_V(adap->pf) |
5589 FW_PFVF_CMD_VFN_V(0));
5590 port_cmd.retval_len16 = cpu_to_be32(FW_LEN16(port_cmd));
5591 err = t4_wr_mbox(adap, adap->mbox, &port_cmd, sizeof(port_cmd),
5592 &port_rpl);
b6244201
HS		 5593 if (err)
5594 return err;
baf50868
GG		 5595 pmask = FW_PFVF_CMD_PMASK_G(be32_to_cpu(port_rpl.type_to_neq));
5596 port = ffs(pmask) - 1;
5597 /* Allocate VF Management Interface. */
5598 snprintf(name, IFNAMSIZ, "mgmtpf%d,%d", adap->adap_idx,
5599 adap->pf);
5600 netdev = alloc_netdev(sizeof(struct port_info),
5601 name, NET_NAME_UNKNOWN, cxgb4_mgmt_setup);
5602 if (!netdev)
5603 return -ENOMEM;
7829451c 5604
baf50868
GG		 5605 pi = netdev_priv(netdev);
5606 pi->adapter = adap;
5607 pi->lport = port;
5608 pi->tx_chan = port;
5609 SET_NETDEV_DEV(netdev, &pdev->dev);
5610
5611 adap->port[0] = netdev;
5612 pi->port_id = 0;
5613
5614 err = register_netdev(adap->port[0]);
5615 if (err) {
5616 pr_info("Unable to register VF mgmt netdev %s\n", name);
5617 free_netdev(adap->port[0]);
5618 adap->port[0] = NULL;
e7b48a32 5619 return err;
baf50868
GG		 5620 }
5621 /* Allocate and set up VF Information. */
5622 adap->vfinfo = kcalloc(pci_sriov_get_totalvfs(pdev),
5623 sizeof(struct vf_info), GFP_KERNEL);
5624 if (!adap->vfinfo) {
5625 unregister_netdev(adap->port[0]);
5626 free_netdev(adap->port[0]);
5627 adap->port[0] = NULL;
5628 return -ENOMEM;
5629 }
5630 cxgb4_mgmt_fill_vf_station_mac_addr(adap);
5631 }
5632 /* Instantiate the requested number of VFs. */
5633 err = pci_enable_sriov(pdev, num_vfs);
5634 if (err) {
5635 pr_info("Unable to instantiate %d VFs\n", num_vfs);
5636 if (!current_vfs) {
5637 unregister_netdev(adap->port[0]);
5638 free_netdev(adap->port[0]);
5639 adap->port[0] = NULL;
5640 kfree(adap->vfinfo);
5641 adap->vfinfo = NULL;
5642 }
5643 return err;
b6244201 5644 }
661dbeb9 5645
baf50868 5646 adap->num_vfs = num_vfs;
b6244201
HS		 5647 return num_vfs;
5648}
baf50868 5649#endif /* CONFIG_PCI_IOV */
b6244201 5650
1dd06ae8 5651static int init_one(struct pci_dev *pdev, const struct pci_device_id *ent)
b8ff05a9 5652{
e8d45292
GG		 5653 struct net_device *netdev;
5654 struct adapter *adapter;
5655 static int adap_idx = 1;
5656 int s_qpp, qpp, num_seg;
b8ff05a9 5657 struct port_info *pi;
c8f44aff 5658 bool highdma = false;
d86bd29e 5659 enum chip_type chip;
e8d45292
GG		 5660 void __iomem *regs;
5661 int func, chip_ver;
5662 u16 device_id;
5663 int i, err;
5664 u32 whoami;
b8ff05a9
DM		 5665
5666 printk_once(KERN_INFO "%s - version %s\n", DRV_DESC, DRV_VERSION);
5667
5668 err = pci_request_regions(pdev, KBUILD_MODNAME);
5669 if (err) {
5670 /* Just info, some other driver may have claimed the device. */
5671 dev_info(&pdev->dev, "cannot obtain PCI resources\n");
5672 return err;
5673 }
5674
b8ff05a9
DM		 5675 err = pci_enable_device(pdev);
5676 if (err) {
5677 dev_err(&pdev->dev, "cannot enable PCI device\n");
5678 goto out_release_regions;
5679 }
5680
d6ce2628
HS		 5681 regs = pci_ioremap_bar(pdev, 0);
5682 if (!regs) {
5683 dev_err(&pdev->dev, "cannot map device registers\n");
5684 err = -ENOMEM;
5685 goto out_disable_device;
5686 }
5687
baf50868
GG		 5688 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
5689 if (!adapter) {
5690 err = -ENOMEM;
5691 goto out_unmap_bar0;
5692 }
5693
5694 adapter->regs = regs;
8203b509
HS		 5695 err = t4_wait_dev_ready(regs);
5696 if (err < 0)
e729452e 5697 goto out_free_adapter;
8203b509 5698
d6ce2628 5699 /* We control everything through one PF */
e8d45292
GG		 5700 whoami = t4_read_reg(adapter, PL_WHOAMI_A);
5701 pci_read_config_word(pdev, PCI_DEVICE_ID, &device_id);
5702 chip = t4_get_chip_type(adapter, CHELSIO_PCI_ID_VER(device_id));
5703 if (chip < 0) {
5704 dev_err(&pdev->dev, "Device %d is not supported\n", device_id);
5705 err = chip;
5706 goto out_free_adapter;
5707 }
5708 chip_ver = CHELSIO_CHIP_VERSION(chip);
5709 func = chip_ver <= CHELSIO_T5 ?
5710 SOURCEPF_G(whoami) : T6_SOURCEPF_G(whoami);
baf50868
GG		 5711
5712 adapter->pdev = pdev;
5713 adapter->pdev_dev = &pdev->dev;
5714 adapter->name = pci_name(pdev);
5715 adapter->mbox = func;
5716 adapter->pf = func;
016764de
GG		 5717 adapter->params.chip = chip;
5718 adapter->adap_idx = adap_idx;
baf50868
GG		 5719 adapter->msg_enable = DFLT_MSG_ENABLE;
5720 adapter->mbox_log = kzalloc(sizeof(*adapter->mbox_log) +
5721 (sizeof(struct mbox_cmd) *
5722 T4_OS_LOG_MBOX_CMDS),
5723 GFP_KERNEL);
5724 if (!adapter->mbox_log) {
5725 err = -ENOMEM;
5726 goto out_free_adapter;
5727 }
5728 spin_lock_init(&adapter->mbox_lock);
5729 INIT_LIST_HEAD(&adapter->mlist.list);
aca06eaf 5730 adapter->mbox_log->size = T4_OS_LOG_MBOX_CMDS;
baf50868
GG		 5731 pci_set_drvdata(pdev, adapter);
5732
d6ce2628 5733 if (func != ent->driver_data) {
d6ce2628
HS		 5734 pci_disable_device(pdev);
5735 pci_save_state(pdev); /* to restore SR-IOV later */
baf50868 5736 return 0;
d6ce2628
HS		 5737 }
5738
b8ff05a9 5739 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) {
c8f44aff 5740 highdma = true;
b8ff05a9
DM		 5741 err = pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64));
5742 if (err) {
5743 dev_err(&pdev->dev, "unable to obtain 64-bit DMA for "
5744 "coherent allocations\n");
baf50868 5745 goto out_free_adapter;
b8ff05a9
DM		 5746 }
5747 } else {
5748 err = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
5749 if (err) {
5750 dev_err(&pdev->dev, "no usable DMA configuration\n");
baf50868 5751 goto out_free_adapter;
b8ff05a9
DM		 5752 }
5753 }
5754
5755 pci_enable_pcie_error_reporting(pdev);
5756 pci_set_master(pdev);
5757 pci_save_state(pdev);
7829451c 5758 adap_idx++;
29aaee65
AB		 5759 adapter->workq = create_singlethread_workqueue("cxgb4");
5760 if (!adapter->workq) {
5761 err = -ENOMEM;
5762 goto out_free_adapter;
5763 }
5764
144be3d9 5765 /* PCI device has been enabled */
80f61f19 5766 adapter->flags |= CXGB4_DEV_ENABLED;
b8ff05a9
DM		 5767 memset(adapter->chan_map, 0xff, sizeof(adapter->chan_map));
5768
b0ba9d5f
CL		 5769 /* If possible, we use PCIe Relaxed Ordering Attribute to deliver
5770 * Ingress Packet Data to Free List Buffers in order to allow for
5771 * chipset performance optimizations between the Root Complex and
5772 * Memory Controllers. (Messages to the associated Ingress Queue
5773 * notifying new Packet Placement in the Free Lists Buffers will be
5774 * send without the Relaxed Ordering Attribute thus guaranteeing that
5775 * all preceding PCIe Transaction Layer Packets will be processed
5776 * first.) But some Root Complexes have various issues with Upstream
5777 * Transaction Layer Packets with the Relaxed Ordering Attribute set.
5778 * The PCIe devices which under the Root Complexes will be cleared the
5779 * Relaxed Ordering bit in the configuration space, So we check our
5780 * PCIe configuration space to see if it's flagged with advice against
5781 * using Relaxed Ordering.
5782 */
5783 if (!pcie_relaxed_ordering_enabled(pdev))
80f61f19 5784 adapter->flags |= CXGB4_ROOT_NO_RELAXED_ORDERING;
b0ba9d5f 5785
b8ff05a9
DM		 5786 spin_lock_init(&adapter->stats_lock);
5787 spin_lock_init(&adapter->tid_release_lock);
e327c225 5788 spin_lock_init(&adapter->win0_lock);
b8ff05a9
DM		 5789
5790 INIT_WORK(&adapter->tid_release_task, process_tid_release_list);
881806bc
VP		 5791 INIT_WORK(&adapter->db_full_task, process_db_full);
5792 INIT_WORK(&adapter->db_drop_task, process_db_drop);
8b7372c1 5793 INIT_WORK(&adapter->fatal_err_notify_task, notify_fatal_err);
b8ff05a9
DM		 5794
5795 err = t4_prep_adapter(adapter);
5796 if (err)
d6ce2628
HS		 5797 goto out_free_adapter;
5798
1dde532d
RL		 5799 if (is_kdump_kernel()) {
5800 /* Collect hardware state and append to /proc/vmcore */
5801 err = cxgb4_cudbg_vmcore_add_dump(adapter);
5802 if (err) {
5803 dev_warn(adapter->pdev_dev,
5804 "Fail collecting vmcore device dump, err: %d. Continuing\n",
5805 err);
5806 err = 0;
5807 }
5808 }
22adfe0a 5809
d14807dd 5810 if (!is_t4(adapter->params.chip)) {
f612b815
HS		 5811 s_qpp = (QUEUESPERPAGEPF0_S +
5812 (QUEUESPERPAGEPF1_S - QUEUESPERPAGEPF0_S) *
b2612722 5813 adapter->pf);
f612b815
HS		 5814 qpp = 1 << QUEUESPERPAGEPF0_G(t4_read_reg(adapter,
5815 SGE_EGRESS_QUEUES_PER_PAGE_PF_A) >> s_qpp);
22adfe0a
SR		 5816 num_seg = PAGE_SIZE / SEGMENT_SIZE;
5817
5818 /* Each segment size is 128B. Write coalescing is enabled only
5819 * when SGE_EGRESS_QUEUES_PER_PAGE_PF reg value for the
5820 * queue is less no of segments that can be accommodated in
5821 * a page size.
5822 */
5823 if (qpp > num_seg) {
5824 dev_err(&pdev->dev,
5825 "Incorrect number of egress queues per page\n");
5826 err = -EINVAL;
d6ce2628 5827 goto out_free_adapter;
22adfe0a
SR		 5828 }
5829 adapter->bar2 = ioremap_wc(pci_resource_start(pdev, 2),
5830 pci_resource_len(pdev, 2));
5831 if (!adapter->bar2) {
5832 dev_err(&pdev->dev, "cannot map device bar2 region\n");
5833 err = -ENOMEM;
d6ce2628 5834 goto out_free_adapter;
22adfe0a
SR		 5835 }
5836 }
5837
636f9d37 5838 setup_memwin(adapter);
b8ff05a9 5839 err = adap_init0(adapter);
5b377d11
HS		 5840#ifdef CONFIG_DEBUG_FS
5841 bitmap_zero(adapter->sge.blocked_fl, adapter->sge.egr_sz);
5842#endif
636f9d37 5843 setup_memwin_rdma(adapter);
b8ff05a9
DM		 5844 if (err)
5845 goto out_unmap_bar;
5846
2a485cf7
HS		 5847 /* configure SGE_STAT_CFG_A to read WC stats */
5848 if (!is_t4(adapter->params.chip))
676d6a75
HS		 5849 t4_write_reg(adapter, SGE_STAT_CFG_A, STATSOURCE_T5_V(7) |
5850 (is_t5(adapter->params.chip) ? STATMODE_V(0) :
5851 T6_STATMODE_V(0)));
2a485cf7 5852
b539ea60
AV		 5853 /* Initialize hash mac addr list */
5854 INIT_LIST_HEAD(&adapter->mac_hlist);
5855
b8ff05a9 5856 for_each_port(adapter, i) {
b8ff05a9
DM		 5857 netdev = alloc_etherdev_mq(sizeof(struct port_info),
5858 MAX_ETH_QSETS);
5859 if (!netdev) {
5860 err = -ENOMEM;
5861 goto out_free_dev;
5862 }
5863
5864 SET_NETDEV_DEV(netdev, &pdev->dev);
5865
5866 adapter->port[i] = netdev;
5867 pi = netdev_priv(netdev);
5868 pi->adapter = adapter;
5869 pi->xact_addr_filt = -1;
b8ff05a9 5870 pi->port_id = i;
b8ff05a9
DM		 5871 netdev->irq = pdev->irq;
5872
2ed28baa
MM		 5873 netdev->hw_features = NETIF_F_SG | TSO_FLAGS |
5874 NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM |
012475e3 5875 NETIF_F_RXCSUM | NETIF_F_RXHASH | NETIF_F_GRO |
d8931847
RL		 5876 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
5877 NETIF_F_HW_TC;
d0a1299c 5878
e8d45292 5879 if (chip_ver > CHELSIO_T5) {
c50ae55e
GG		 5880 netdev->hw_enc_features |= NETIF_F_IP_CSUM |
5881 NETIF_F_IPV6_CSUM |
5882 NETIF_F_RXCSUM |
5883 NETIF_F_GSO_UDP_TUNNEL |
64f40cdd 5884 NETIF_F_GSO_UDP_TUNNEL_CSUM |
c50ae55e
GG		 5885 NETIF_F_TSO | NETIF_F_TSO6;
5886
1435d997 5887 netdev->hw_features |= NETIF_F_GSO_UDP_TUNNEL |
64f40cdd 5888 NETIF_F_GSO_UDP_TUNNEL_CSUM |
1435d997 5889 NETIF_F_HW_TLS_RECORD;
c50ae55e 5890 }
d0a1299c 5891
c8f44aff
MM		 5892 if (highdma)
5893 netdev->hw_features |= NETIF_F_HIGHDMA;
5894 netdev->features |= netdev->hw_features;
b8ff05a9
DM		 5895 netdev->vlan_features = netdev->features & VLAN_FEAT;
5896
01789349
JP		 5897 netdev->priv_flags |= IFF_UNICAST_FLT;
5898
d894be57 5899 /* MTU range: 81 - 9600 */
a047fbae 5900 netdev->min_mtu = 81; /* accommodate SACK */
d894be57
JW		 5901 netdev->max_mtu = MAX_MTU;
5902
b8ff05a9 5903 netdev->netdev_ops = &cxgb4_netdev_ops;
688848b1
AB		 5904#ifdef CONFIG_CHELSIO_T4_DCB
5905 netdev->dcbnl_ops = &cxgb4_dcb_ops;
5906 cxgb4_dcb_state_init(netdev);
ebddd97a 5907 cxgb4_dcb_version_init(netdev);
688848b1 5908#endif
812034f1 5909 cxgb4_set_ethtool_ops(netdev);
b8ff05a9
DM		 5910 }
5911
ad75b7d3
RL		 5912 cxgb4_init_ethtool_dump(adapter);
5913
b8ff05a9
DM		 5914 pci_set_drvdata(pdev, adapter);
5915
80f61f19 5916 if (adapter->flags & CXGB4_FW_OK) {
060e0c75 5917 err = t4_port_init(adapter, func, func, 0);
b8ff05a9
DM		 5918 if (err)
5919 goto out_free_dev;
098ef6c2
HS		 5920 } else if (adapter->params.nports == 1) {
5921 /* If we don't have a connection to the firmware -- possibly
5922 * because of an error -- grab the raw VPD parameters so we
5923 * can set the proper MAC Address on the debug network
5924 * interface that we've created.
5925 */
5926 u8 hw_addr[ETH_ALEN];
5927 u8 *na = adapter->params.vpd.na;
5928
5929 err = t4_get_raw_vpd_params(adapter, &adapter->params.vpd);
5930 if (!err) {
5931 for (i = 0; i < ETH_ALEN; i++)
5932 hw_addr[i] = (hex2val(na[2 * i + 0]) * 16 +
5933 hex2val(na[2 * i + 1]));
5934 t4_set_hw_addr(adapter, 0, hw_addr);
5935 }
b8ff05a9
DM		 5936 }
5937
80f61f19 5938 if (!(adapter->flags & CXGB4_FW_OK))
0eaec62a
CL		 5939 goto fw_attach_fail;
5940
098ef6c2 5941 /* Configure queues and allocate tables now, they can be needed as
b8ff05a9
DM		 5942 * soon as the first register_netdev completes.
5943 */
0eaec62a
CL		 5944 err = cfg_queues(adapter);
5945 if (err)
5946 goto out_free_dev;
b8ff05a9 5947
3bdb376e
KS		 5948 adapter->smt = t4_init_smt();
5949 if (!adapter->smt) {
5950 /* We tolerate a lack of SMT, giving up some functionality */
5951 dev_warn(&pdev->dev, "could not allocate SMT, continuing\n");
5952 }
5953
5be9ed8d 5954 adapter->l2t = t4_init_l2t(adapter->l2t_start, adapter->l2t_end);
b8ff05a9
DM		 5955 if (!adapter->l2t) {
5956 /* We tolerate a lack of L2T, giving up some functionality */
5957 dev_warn(&pdev->dev, "could not allocate L2T, continuing\n");
5958 adapter->params.offload = 0;
5959 }
5960
b5a02f50 5961#if IS_ENABLED(CONFIG_IPV6)
e8d45292 5962 if (chip_ver <= CHELSIO_T5 &&
eb72f74f
HS		 5963 (!(t4_read_reg(adapter, LE_DB_CONFIG_A) & ASLIPCOMPEN_F))) {
5964 /* CLIP functionality is not present in hardware,
5965 * hence disable all offload features
b5a02f50
AB		 5966 */
5967 dev_warn(&pdev->dev,
eb72f74f 5968 "CLIP not enabled in hardware, continuing\n");
b5a02f50 5969 adapter->params.offload = 0;
eb72f74f
HS		 5970 } else {
5971 adapter->clipt = t4_init_clip_tbl(adapter->clipt_start,
5972 adapter->clipt_end);
5973 if (!adapter->clipt) {
5974 /* We tolerate a lack of clip_table, giving up
5975 * some functionality
5976 */
5977 dev_warn(&pdev->dev,
5978 "could not allocate Clip table, continuing\n");
5979 adapter->params.offload = 0;
5980 }
b5a02f50
AB		 5981 }
5982#endif
b72a32da
RL		 5983
5984 for_each_port(adapter, i) {
5985 pi = adap2pinfo(adapter, i);
5986 pi->sched_tbl = t4_init_sched(adapter->params.nsched_cls);
5987 if (!pi->sched_tbl)
5988 dev_warn(&pdev->dev,
5989 "could not activate scheduling on port %d\n",
5990 i);
5991 }
5992
578b46b9 5993 if (tid_init(&adapter->tids) < 0) {
b8ff05a9
DM		 5994 dev_warn(&pdev->dev, "could not allocate TID table, "
5995 "continuing\n");
5996 adapter->params.offload = 0;
d8931847 5997 } else {
45da1ca2 5998 adapter->tc_u32 = cxgb4_init_tc_u32(adapter);
d8931847
RL		 5999 if (!adapter->tc_u32)
6000 dev_warn(&pdev->dev,
6001 "could not offload tc u32, continuing\n");
62488e4b 6002
79e6d46a
KS		 6003 if (cxgb4_init_tc_flower(adapter))
6004 dev_warn(&pdev->dev,
6005 "could not offload tc flower, continuing\n");
b8ff05a9
DM		 6006 }
6007
5c31254e 6008 if (is_offload(adapter) || is_hashfilter(adapter)) {
9a1bb9f6
HS		 6009 if (t4_read_reg(adapter, LE_DB_CONFIG_A) & HASHEN_F) {
6010 u32 hash_base, hash_reg;
6011
dfecc759 6012 if (chip_ver <= CHELSIO_T5) {
9a1bb9f6
HS		 6013 hash_reg = LE_DB_TID_HASHBASE_A;
6014 hash_base = t4_read_reg(adapter, hash_reg);
6015 adapter->tids.hash_base = hash_base / 4;
6016 } else {
6017 hash_reg = T6_LE_DB_HASH_TID_BASE_A;
6018 hash_base = t4_read_reg(adapter, hash_reg);
6019 adapter->tids.hash_base = hash_base;
6020 }
6021 }
6022 }
6023
f7cabcdd
DM		 6024 /* See what interrupts we'll be using */
6025 if (msi > 1 && enable_msix(adapter) == 0)
80f61f19 6026 adapter->flags |= CXGB4_USING_MSIX;
94cdb8bb 6027 else if (msi > 0 && pci_enable_msi(pdev) == 0) {
80f61f19 6028 adapter->flags |= CXGB4_USING_MSI;
94cdb8bb
HS		 6029 if (msi > 1)
6030 free_msix_info(adapter);
6031 }
f7cabcdd 6032
547fd272 6033 /* check for PCI Express bandwidth capabiltites */
57d12fc6 6034 pcie_print_link_status(pdev);
547fd272 6035
28b38705
RR		 6036 cxgb4_init_mps_ref_entries(adapter);
6037
671b0060
DM		 6038 err = init_rss(adapter);
6039 if (err)
6040 goto out_free_dev;
6041
843bd7db
AV		 6042 err = setup_fw_sge_queues(adapter);
6043 if (err) {
6044 dev_err(adapter->pdev_dev,
6045 "FW sge queue allocation failed, err %d", err);
6046 goto out_free_dev;
6047 }
6048
0eaec62a 6049fw_attach_fail:
b8ff05a9
DM		 6050 /*
6051 * The card is now ready to go. If any errors occur during device
6052 * registration we do not fail the whole card but rather proceed only
6053 * with the ports we manage to register successfully. However we must
6054 * register at least one net device.
6055 */
6056 for_each_port(adapter, i) {
a57cabe0 6057 pi = adap2pinfo(adapter, i);
d2a007ab 6058 adapter->port[i]->dev_port = pi->lport;
a57cabe0
DM		 6059 netif_set_real_num_tx_queues(adapter->port[i], pi->nqsets);
6060 netif_set_real_num_rx_queues(adapter->port[i], pi->nqsets);
6061
b1a73af9
SM		 6062 netif_carrier_off(adapter->port[i]);
6063
b8ff05a9
DM		 6064 err = register_netdev(adapter->port[i]);
6065 if (err)
b1a3c2b6 6066 break;
b1a3c2b6
DM		 6067 adapter->chan_map[pi->tx_chan] = i;
6068 print_port_info(adapter->port[i]);
b8ff05a9 6069 }
b1a3c2b6 6070 if (i == 0) {
b8ff05a9
DM		 6071 dev_err(&pdev->dev, "could not register any net devices\n");
6072 goto out_free_dev;
6073 }
b1a3c2b6
DM		 6074 if (err) {
6075 dev_warn(&pdev->dev, "only %d net devices registered\n", i);
6076 err = 0;
6403eab1 6077 }
b8ff05a9
DM		 6078
6079 if (cxgb4_debugfs_root) {
6080 adapter->debugfs_root = debugfs_create_dir(pci_name(pdev),
6081 cxgb4_debugfs_root);
6082 setup_debugfs(adapter);
6083 }
6084
6482aa7c
DLR		 6085 /* PCIe EEH recovery on powerpc platforms needs fundamental reset */
6086 pdev->needs_freset = 1;
6087
0fbc81b3
HS		 6088 if (is_uld(adapter)) {
6089 mutex_lock(&uld_mutex);
6090 list_add_tail(&adapter->list_node, &adapter_list);
6091 mutex_unlock(&uld_mutex);
6092 }
b8ff05a9 6093
9c33e420
AG		 6094 if (!is_t4(adapter->params.chip))
6095 cxgb4_ptp_init(adapter);
6096
ebcd210e 6097 if (IS_REACHABLE(CONFIG_THERMAL) &&
80f61f19 6098 !is_t4(adapter->params.chip) && (adapter->flags & CXGB4_FW_OK))
b1871915 6099 cxgb4_thermal_init(adapter);
b1871915 6100
0de72738 6101 print_adapter_info(adapter);
7829451c 6102 return 0;
0de72738 6103
b8ff05a9 6104 out_free_dev:
843bd7db 6105 t4_free_sge_resources(adapter);
06546391 6106 free_some_resources(adapter);
80f61f19 6107 if (adapter->flags & CXGB4_USING_MSIX)
94cdb8bb 6108 free_msix_info(adapter);
0fbc81b3
HS		 6109 if (adapter->num_uld || adapter->num_ofld_uld)
6110 t4_uld_mem_free(adapter);
b8ff05a9 6111 out_unmap_bar:
d14807dd 6112 if (!is_t4(adapter->params.chip))
22adfe0a 6113 iounmap(adapter->bar2);
b8ff05a9 6114 out_free_adapter:
29aaee65
AB		 6115 if (adapter->workq)
6116 destroy_workqueue(adapter->workq);
6117
7f080c3f 6118 kfree(adapter->mbox_log);
b8ff05a9 6119 kfree(adapter);
d6ce2628
HS		 6120 out_unmap_bar0:
6121 iounmap(regs);
b8ff05a9
DM		 6122 out_disable_device:
6123 pci_disable_pcie_error_reporting(pdev);
6124 pci_disable_device(pdev);
6125 out_release_regions:
6126 pci_release_regions(pdev);
b8ff05a9
DM		 6127 return err;
6128}
6129
91744948 6130static void remove_one(struct pci_dev *pdev)
b8ff05a9
DM		 6131{
6132 struct adapter *adapter = pci_get_drvdata(pdev);
b539ea60 6133 struct hash_mac_addr *entry, *tmp;
b8ff05a9 6134
7829451c
HS		 6135 if (!adapter) {
6136 pci_release_regions(pdev);
6137 return;
6138 }
636f9d37 6139
b1a79360
VK		 6140 /* If we allocated filters, free up state associated with any
6141 * valid filters ...
6142 */
6143 clear_all_filters(adapter);
6144
80f61f19 6145 adapter->flags |= CXGB4_SHUTTING_DOWN;
e1f6198e 6146
7829451c 6147 if (adapter->pf == 4) {
b8ff05a9
DM		 6148 int i;
6149
29aaee65
AB		 6150 /* Tear down per-adapter Work Queue first since it can contain
6151 * references to our adapter data structure.
6152 */
6153 destroy_workqueue(adapter->workq);
6154
6a146f3a 6155 if (is_uld(adapter)) {
b8ff05a9 6156 detach_ulds(adapter);
6a146f3a
GP		 6157 t4_uld_clean_up(adapter);
6158 }
b8ff05a9 6159
8b4e6b3c
AV		 6160 adap_free_hma_mem(adapter);
6161
b37987e8
HS		 6162 disable_interrupts(adapter);
6163
28b38705
RR		 6164 cxgb4_free_mps_ref_entries(adapter);
6165
b8ff05a9 6166 for_each_port(adapter, i)
8f3a7676 6167 if (adapter->port[i]->reg_state == NETREG_REGISTERED)
b8ff05a9
DM		 6168 unregister_netdev(adapter->port[i]);
6169
9f16dc2e 6170 debugfs_remove_recursive(adapter->debugfs_root);
b8ff05a9 6171
9c33e420
AG		 6172 if (!is_t4(adapter->params.chip))
6173 cxgb4_ptp_stop(adapter);
ebcd210e 6174 if (IS_REACHABLE(CONFIG_THERMAL))
e70a57fa 6175 cxgb4_thermal_remove(adapter);
9c33e420 6176
80f61f19 6177 if (adapter->flags & CXGB4_FULL_INIT_DONE)
aaefae9b 6178 cxgb_down(adapter);
b8ff05a9 6179
80f61f19 6180 if (adapter->flags & CXGB4_USING_MSIX)
94cdb8bb 6181 free_msix_info(adapter);
0fbc81b3
HS		 6182 if (adapter->num_uld || adapter->num_ofld_uld)
6183 t4_uld_mem_free(adapter);
06546391 6184 free_some_resources(adapter);
b539ea60
AV		 6185 list_for_each_entry_safe(entry, tmp, &adapter->mac_hlist,
6186 list) {
6187 list_del(&entry->list);
6188 kfree(entry);
6189 }
6190
b5a02f50
AB		 6191#if IS_ENABLED(CONFIG_IPV6)
6192 t4_cleanup_clip_tbl(adapter);
6193#endif
d14807dd 6194 if (!is_t4(adapter->params.chip))
22adfe0a 6195 iounmap(adapter->bar2);
7829451c
HS		 6196 }
6197#ifdef CONFIG_PCI_IOV
6198 else {
baf50868 6199 cxgb4_iov_configure(adapter->pdev, 0);
7829451c
HS		 6200 }
6201#endif
c4e43e14
GG		 6202 iounmap(adapter->regs);
6203 pci_disable_pcie_error_reporting(pdev);
80f61f19 6204 if ((adapter->flags & CXGB4_DEV_ENABLED)) {
c4e43e14 6205 pci_disable_device(pdev);
80f61f19 6206 adapter->flags &= ~CXGB4_DEV_ENABLED;
c4e43e14
GG		 6207 }
6208 pci_release_regions(pdev);
6209 kfree(adapter->mbox_log);
6210 synchronize_rcu();
6211 kfree(adapter);
b8ff05a9
DM		 6212}
6213
0fbc81b3
HS		 6214/* "Shutdown" quiesces the device, stopping Ingress Packet and Interrupt
6215 * delivery. This is essentially a stripped down version of the PCI remove()
6216 * function where we do the minimal amount of work necessary to shutdown any
6217 * further activity.
6218 */
6219static void shutdown_one(struct pci_dev *pdev)
6220{
6221 struct adapter *adapter = pci_get_drvdata(pdev);
6222
6223 /* As with remove_one() above (see extended comment), we only want do
6224 * do cleanup on PCI Devices which went all the way through init_one()
6225 * ...
6226 */
6227 if (!adapter) {
6228 pci_release_regions(pdev);
6229 return;
6230 }
6231
80f61f19 6232 adapter->flags |= CXGB4_SHUTTING_DOWN;
e1f6198e 6233
0fbc81b3
HS		 6234 if (adapter->pf == 4) {
6235 int i;
6236
6237 for_each_port(adapter, i)
6238 if (adapter->port[i]->reg_state == NETREG_REGISTERED)
6239 cxgb_close(adapter->port[i]);
6240
6a146f3a
GP		 6241 if (is_uld(adapter)) {
6242 detach_ulds(adapter);
6243 t4_uld_clean_up(adapter);
6244 }
6245
0fbc81b3
HS		 6246 disable_interrupts(adapter);
6247 disable_msi(adapter);
6248
6249 t4_sge_stop(adapter);
80f61f19 6250 if (adapter->flags & CXGB4_FW_OK)
0fbc81b3
HS		 6251 t4_fw_bye(adapter, adapter->mbox);
6252 }
0fbc81b3
HS		 6253}
6254
b8ff05a9
DM		 6255static struct pci_driver cxgb4_driver = {
6256 .name = KBUILD_MODNAME,
6257 .id_table = cxgb4_pci_tbl,
6258 .probe = init_one,
91744948 6259 .remove = remove_one,
0fbc81b3 6260 .shutdown = shutdown_one,
b6244201
HS		 6261#ifdef CONFIG_PCI_IOV
6262 .sriov_configure = cxgb4_iov_configure,
6263#endif
204dc3c0 6264 .err_handler = &cxgb4_eeh,
b8ff05a9
DM		 6265};
6266
6267static int __init cxgb4_init_module(void)
6268{
6269 int ret;
6270
6271 /* Debugfs support is optional, just warn if this fails */
6272 cxgb4_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL);
6273 if (!cxgb4_debugfs_root)
428ac43f 6274 pr_warn("could not create debugfs entry, continuing\n");
b8ff05a9
DM		 6275
6276 ret = pci_register_driver(&cxgb4_driver);
29aaee65 6277 if (ret < 0)
a3147770 6278 goto err_pci;
01bcca68 6279
1bb60376 6280#if IS_ENABLED(CONFIG_IPV6)
b5a02f50 6281 if (!inet6addr_registered) {
a3147770
Y		 6282 ret = register_inet6addr_notifier(&cxgb4_inet6addr_notifier);
6283 if (ret)
6284 pci_unregister_driver(&cxgb4_driver);
6285 else
6286 inet6addr_registered = true;
b5a02f50 6287 }
1bb60376 6288#endif
01bcca68 6289
a3147770
Y		 6290 if (ret == 0)
6291 return ret;
6292
6293err_pci:
6294 debugfs_remove(cxgb4_debugfs_root);
6295
b8ff05a9
DM		 6296 return ret;
6297}
6298
6299static void __exit cxgb4_cleanup_module(void)
6300{
1bb60376 6301#if IS_ENABLED(CONFIG_IPV6)
1793c798 6302 if (inet6addr_registered) {
b5a02f50
AB		 6303 unregister_inet6addr_notifier(&cxgb4_inet6addr_notifier);
6304 inet6addr_registered = false;
6305 }
1bb60376 6306#endif
b8ff05a9
DM		 6307 pci_unregister_driver(&cxgb4_driver);
6308 debugfs_remove(cxgb4_debugfs_root); /* NULL ok */
6309}
6310
6311module_init(cxgb4_init_module);
6312module_exit(cxgb4_cleanup_module);
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