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Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001/**********************************************************************
Raghu Vatsavayi50579d32016-11-14 15:54:46 -08002 * Author: Cavium, Inc.
3 *
4 * Contact: support@cavium.com
5 * Please include "LiquidIO" in the subject.
6 *
7 * Copyright (c) 2003-2016 Cavium, Inc.
8 *
9 * This file is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License, Version 2, as
11 * published by the Free Software Foundation.
12 *
13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT. See the GNU General Public License for more details.
17 ***********************************************************************/
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -070018#include <linux/pci.h>
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -070019#include <linux/firmware.h>
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -070020#include <net/vxlan.h>
Raghu Vatsavayi9ff1a9b2016-09-01 11:16:09 -070021#include <linux/kthread.h>
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -070022#include "liquidio_common.h"
23#include "octeon_droq.h"
24#include "octeon_iq.h"
25#include "response_manager.h"
26#include "octeon_device.h"
27#include "octeon_nic.h"
28#include "octeon_main.h"
29#include "octeon_network.h"
30#include "cn66xx_regs.h"
31#include "cn66xx_device.h"
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -070032#include "cn68xx_device.h"
Raghu Vatsavayi72c00912016-08-31 11:03:25 -070033#include "cn23xx_pf_device.h"
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -070034#include "liquidio_image.h"
35
36MODULE_AUTHOR("Cavium Networks, <support@cavium.com>");
37MODULE_DESCRIPTION("Cavium LiquidIO Intelligent Server Adapter Driver");
38MODULE_LICENSE("GPL");
39MODULE_VERSION(LIQUIDIO_VERSION);
40MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_210SV_NAME LIO_FW_NAME_SUFFIX);
41MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_210NV_NAME LIO_FW_NAME_SUFFIX);
42MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_410NV_NAME LIO_FW_NAME_SUFFIX);
Raghu Vatsavayic865cdf2016-11-28 16:54:36 -080043MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_23XX_NAME LIO_FW_NAME_SUFFIX);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -070044
45static int ddr_timeout = 10000;
46module_param(ddr_timeout, int, 0644);
47MODULE_PARM_DESC(ddr_timeout,
48 "Number of milliseconds to wait for DDR initialization. 0 waits for ddr_timeout to be set to non-zero value before starting to check");
49
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -070050#define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK)
51
52static int debug = -1;
53module_param(debug, int, 0644);
54MODULE_PARM_DESC(debug, "NETIF_MSG debug bits");
55
56static char fw_type[LIO_MAX_FW_TYPE_LEN];
57module_param_string(fw_type, fw_type, sizeof(fw_type), 0000);
58MODULE_PARM_DESC(fw_type, "Type of firmware to be loaded. Default \"nic\"");
59
Raghu Vatsavayia5b37882016-06-14 16:54:48 -070060static int ptp_enable = 1;
61
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -070062/* Bit mask values for lio->ifstate */
63#define LIO_IFSTATE_DROQ_OPS 0x01
64#define LIO_IFSTATE_REGISTERED 0x02
65#define LIO_IFSTATE_RUNNING 0x04
66#define LIO_IFSTATE_RX_TIMESTAMP_ENABLED 0x08
67
68/* Polling interval for determining when NIC application is alive */
69#define LIQUIDIO_STARTER_POLL_INTERVAL_MS 100
70
71/* runtime link query interval */
72#define LIQUIDIO_LINK_QUERY_INTERVAL_MS 1000
73
74struct liquidio_if_cfg_context {
75 int octeon_id;
76
77 wait_queue_head_t wc;
78
79 int cond;
80};
81
82struct liquidio_if_cfg_resp {
83 u64 rh;
84 struct liquidio_if_cfg_info cfg_info;
85 u64 status;
86};
87
Raghu Vatsavayiafdf8412016-09-01 11:16:05 -070088struct liquidio_rx_ctl_context {
89 int octeon_id;
90
91 wait_queue_head_t wc;
92
93 int cond;
94};
95
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -070096struct oct_link_status_resp {
97 u64 rh;
98 struct oct_link_info link_info;
99 u64 status;
100};
101
102struct oct_timestamp_resp {
103 u64 rh;
104 u64 timestamp;
105 u64 status;
106};
107
108#define OCT_TIMESTAMP_RESP_SIZE (sizeof(struct oct_timestamp_resp))
109
110union tx_info {
111 u64 u64;
112 struct {
113#ifdef __BIG_ENDIAN_BITFIELD
114 u16 gso_size;
115 u16 gso_segs;
116 u32 reserved;
117#else
118 u32 reserved;
119 u16 gso_segs;
120 u16 gso_size;
121#endif
122 } s;
123};
124
125/** Octeon device properties to be used by the NIC module.
126 * Each octeon device in the system will be represented
127 * by this structure in the NIC module.
128 */
129
130#define OCTNIC_MAX_SG (MAX_SKB_FRAGS)
131
132#define OCTNIC_GSO_MAX_HEADER_SIZE 128
Raghu Vatsavayi72c00912016-08-31 11:03:25 -0700133#define OCTNIC_GSO_MAX_SIZE \
134 (CN23XX_DEFAULT_INPUT_JABBER - OCTNIC_GSO_MAX_HEADER_SIZE)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700135
136/** Structure of a node in list of gather components maintained by
137 * NIC driver for each network device.
138 */
139struct octnic_gather {
140 /** List manipulation. Next and prev pointers. */
141 struct list_head list;
142
143 /** Size of the gather component at sg in bytes. */
144 int sg_size;
145
146 /** Number of bytes that sg was adjusted to make it 8B-aligned. */
147 int adjust;
148
149 /** Gather component that can accommodate max sized fragment list
150 * received from the IP layer.
151 */
152 struct octeon_sg_entry *sg;
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700153
154 u64 sg_dma_ptr;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700155};
156
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700157struct handshake {
158 struct completion init;
159 struct completion started;
160 struct pci_dev *pci_dev;
161 int init_ok;
162 int started_ok;
163};
164
165struct octeon_device_priv {
166 /** Tasklet structures for this device. */
167 struct tasklet_struct droq_tasklet;
168 unsigned long napi_mask;
169};
170
Raghu Vatsavayica6139f2016-11-14 15:54:40 -0800171#ifdef CONFIG_PCI_IOV
172static int liquidio_enable_sriov(struct pci_dev *dev, int num_vfs);
173#endif
174
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700175static int octeon_device_init(struct octeon_device *);
Raghu Vatsavayi32581242016-08-31 11:03:20 -0700176static int liquidio_stop(struct net_device *netdev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700177static void liquidio_remove(struct pci_dev *pdev);
178static int liquidio_probe(struct pci_dev *pdev,
179 const struct pci_device_id *ent);
180
181static struct handshake handshake[MAX_OCTEON_DEVICES];
182static struct completion first_stage;
183
Raghu Vatsavayi5b173cf2015-06-12 18:11:50 -0700184static void octeon_droq_bh(unsigned long pdev)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700185{
186 int q_no;
187 int reschedule = 0;
188 struct octeon_device *oct = (struct octeon_device *)pdev;
189 struct octeon_device_priv *oct_priv =
190 (struct octeon_device_priv *)oct->priv;
191
Raghu Vatsavayi63da8402016-06-21 22:53:03 -0700192 for (q_no = 0; q_no < MAX_OCTEON_OUTPUT_QUEUES(oct); q_no++) {
Raghu Vatsavayi763185a2016-11-14 15:54:45 -0800193 if (!(oct->io_qmask.oq & BIT_ULL(q_no)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700194 continue;
195 reschedule |= octeon_droq_process_packets(oct, oct->droq[q_no],
196 MAX_PACKET_BUDGET);
Raghu Vatsavayicd8b1eb2016-08-31 11:03:22 -0700197 lio_enable_irq(oct->droq[q_no], NULL);
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -0700198
199 if (OCTEON_CN23XX_PF(oct) && oct->msix_on) {
200 /* set time and cnt interrupt thresholds for this DROQ
201 * for NAPI
202 */
203 int adjusted_q_no = q_no + oct->sriov_info.pf_srn;
204
205 octeon_write_csr64(
206 oct, CN23XX_SLI_OQ_PKT_INT_LEVELS(adjusted_q_no),
207 0x5700000040ULL);
208 octeon_write_csr64(
209 oct, CN23XX_SLI_OQ_PKTS_SENT(adjusted_q_no), 0);
210 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700211 }
212
213 if (reschedule)
214 tasklet_schedule(&oct_priv->droq_tasklet);
215}
216
Raghu Vatsavayi5b173cf2015-06-12 18:11:50 -0700217static int lio_wait_for_oq_pkts(struct octeon_device *oct)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700218{
219 struct octeon_device_priv *oct_priv =
220 (struct octeon_device_priv *)oct->priv;
221 int retry = 100, pkt_cnt = 0, pending_pkts = 0;
222 int i;
223
224 do {
225 pending_pkts = 0;
226
Raghu Vatsavayi63da8402016-06-21 22:53:03 -0700227 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
Raghu Vatsavayi763185a2016-11-14 15:54:45 -0800228 if (!(oct->io_qmask.oq & BIT_ULL(i)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700229 continue;
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -0700230 pkt_cnt += octeon_droq_check_hw_for_pkts(oct->droq[i]);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700231 }
232 if (pkt_cnt > 0) {
233 pending_pkts += pkt_cnt;
234 tasklet_schedule(&oct_priv->droq_tasklet);
235 }
236 pkt_cnt = 0;
237 schedule_timeout_uninterruptible(1);
238
239 } while (retry-- && pending_pkts);
240
241 return pkt_cnt;
242}
243
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700244/**
245 * \brief Forces all IO queues off on a given device
246 * @param oct Pointer to Octeon device
247 */
248static void force_io_queues_off(struct octeon_device *oct)
249{
250 if ((oct->chip_id == OCTEON_CN66XX) ||
251 (oct->chip_id == OCTEON_CN68XX)) {
252 /* Reset the Enable bits for Input Queues. */
253 octeon_write_csr(oct, CN6XXX_SLI_PKT_INSTR_ENB, 0);
254
255 /* Reset the Enable bits for Output Queues. */
256 octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_ENB, 0);
257 }
258}
259
260/**
261 * \brief wait for all pending requests to complete
262 * @param oct Pointer to Octeon device
263 *
264 * Called during shutdown sequence
265 */
266static int wait_for_pending_requests(struct octeon_device *oct)
267{
268 int i, pcount = 0;
269
270 for (i = 0; i < 100; i++) {
271 pcount =
272 atomic_read(&oct->response_list
273 [OCTEON_ORDERED_SC_LIST].pending_req_count);
274 if (pcount)
275 schedule_timeout_uninterruptible(HZ / 10);
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -0700276 else
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700277 break;
278 }
279
280 if (pcount)
281 return 1;
282
283 return 0;
284}
285
286/**
287 * \brief Cause device to go quiet so it can be safely removed/reset/etc
288 * @param oct Pointer to Octeon device
289 */
290static inline void pcierror_quiesce_device(struct octeon_device *oct)
291{
292 int i;
293
294 /* Disable the input and output queues now. No more packets will
295 * arrive from Octeon, but we should wait for all packet processing
296 * to finish.
297 */
298 force_io_queues_off(oct);
299
300 /* To allow for in-flight requests */
301 schedule_timeout_uninterruptible(100);
302
303 if (wait_for_pending_requests(oct))
304 dev_err(&oct->pci_dev->dev, "There were pending requests\n");
305
306 /* Force all requests waiting to be fetched by OCTEON to complete. */
Raghu Vatsavayi63da8402016-06-21 22:53:03 -0700307 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700308 struct octeon_instr_queue *iq;
309
Raghu Vatsavayi763185a2016-11-14 15:54:45 -0800310 if (!(oct->io_qmask.iq & BIT_ULL(i)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700311 continue;
312 iq = oct->instr_queue[i];
313
314 if (atomic_read(&iq->instr_pending)) {
315 spin_lock_bh(&iq->lock);
316 iq->fill_cnt = 0;
317 iq->octeon_read_index = iq->host_write_index;
318 iq->stats.instr_processed +=
319 atomic_read(&iq->instr_pending);
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -0700320 lio_process_iq_request_list(oct, iq, 0);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700321 spin_unlock_bh(&iq->lock);
322 }
323 }
324
325 /* Force all pending ordered list requests to time out. */
326 lio_process_ordered_list(oct, 1);
327
328 /* We do not need to wait for output queue packets to be processed. */
329}
330
331/**
332 * \brief Cleanup PCI AER uncorrectable error status
333 * @param dev Pointer to PCI device
334 */
335static void cleanup_aer_uncorrect_error_status(struct pci_dev *dev)
336{
337 int pos = 0x100;
338 u32 status, mask;
339
340 pr_info("%s :\n", __func__);
341
342 pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status);
343 pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask);
344 if (dev->error_state == pci_channel_io_normal)
345 status &= ~mask; /* Clear corresponding nonfatal bits */
346 else
347 status &= mask; /* Clear corresponding fatal bits */
348 pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status);
349}
350
351/**
352 * \brief Stop all PCI IO to a given device
353 * @param dev Pointer to Octeon device
354 */
355static void stop_pci_io(struct octeon_device *oct)
356{
357 /* No more instructions will be forwarded. */
358 atomic_set(&oct->status, OCT_DEV_IN_RESET);
359
360 pci_disable_device(oct->pci_dev);
361
362 /* Disable interrupts */
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -0700363 oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700364
365 pcierror_quiesce_device(oct);
366
367 /* Release the interrupt line */
368 free_irq(oct->pci_dev->irq, oct);
369
370 if (oct->flags & LIO_FLAG_MSI_ENABLED)
371 pci_disable_msi(oct->pci_dev);
372
373 dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n",
374 lio_get_state_string(&oct->status));
375
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700376 /* making it a common function for all OCTEON models */
377 cleanup_aer_uncorrect_error_status(oct->pci_dev);
378}
379
380/**
381 * \brief called when PCI error is detected
382 * @param pdev Pointer to PCI device
383 * @param state The current pci connection state
384 *
385 * This function is called after a PCI bus error affecting
386 * this device has been detected.
387 */
388static pci_ers_result_t liquidio_pcie_error_detected(struct pci_dev *pdev,
389 pci_channel_state_t state)
390{
391 struct octeon_device *oct = pci_get_drvdata(pdev);
392
393 /* Non-correctable Non-fatal errors */
394 if (state == pci_channel_io_normal) {
395 dev_err(&oct->pci_dev->dev, "Non-correctable non-fatal error reported:\n");
396 cleanup_aer_uncorrect_error_status(oct->pci_dev);
397 return PCI_ERS_RESULT_CAN_RECOVER;
398 }
399
400 /* Non-correctable Fatal errors */
401 dev_err(&oct->pci_dev->dev, "Non-correctable FATAL reported by PCI AER driver\n");
402 stop_pci_io(oct);
403
404 /* Always return a DISCONNECT. There is no support for recovery but only
405 * for a clean shutdown.
406 */
407 return PCI_ERS_RESULT_DISCONNECT;
408}
409
410/**
411 * \brief mmio handler
412 * @param pdev Pointer to PCI device
413 */
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -0700414static pci_ers_result_t liquidio_pcie_mmio_enabled(
415 struct pci_dev *pdev __attribute__((unused)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700416{
417 /* We should never hit this since we never ask for a reset for a Fatal
418 * Error. We always return DISCONNECT in io_error above.
419 * But play safe and return RECOVERED for now.
420 */
421 return PCI_ERS_RESULT_RECOVERED;
422}
423
424/**
425 * \brief called after the pci bus has been reset.
426 * @param pdev Pointer to PCI device
427 *
428 * Restart the card from scratch, as if from a cold-boot. Implementation
429 * resembles the first-half of the octeon_resume routine.
430 */
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -0700431static pci_ers_result_t liquidio_pcie_slot_reset(
432 struct pci_dev *pdev __attribute__((unused)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700433{
434 /* We should never hit this since we never ask for a reset for a Fatal
435 * Error. We always return DISCONNECT in io_error above.
436 * But play safe and return RECOVERED for now.
437 */
438 return PCI_ERS_RESULT_RECOVERED;
439}
440
441/**
442 * \brief called when traffic can start flowing again.
443 * @param pdev Pointer to PCI device
444 *
445 * This callback is called when the error recovery driver tells us that
446 * its OK to resume normal operation. Implementation resembles the
447 * second-half of the octeon_resume routine.
448 */
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -0700449static void liquidio_pcie_resume(struct pci_dev *pdev __attribute__((unused)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700450{
451 /* Nothing to be done here. */
452}
453
454#ifdef CONFIG_PM
455/**
456 * \brief called when suspending
457 * @param pdev Pointer to PCI device
458 * @param state state to suspend to
459 */
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -0700460static int liquidio_suspend(struct pci_dev *pdev __attribute__((unused)),
461 pm_message_t state __attribute__((unused)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700462{
463 return 0;
464}
465
466/**
467 * \brief called when resuming
468 * @param pdev Pointer to PCI device
469 */
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -0700470static int liquidio_resume(struct pci_dev *pdev __attribute__((unused)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700471{
472 return 0;
473}
474#endif
475
476/* For PCI-E Advanced Error Recovery (AER) Interface */
Julia Lawall166e2362015-11-14 11:06:53 +0100477static const struct pci_error_handlers liquidio_err_handler = {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700478 .error_detected = liquidio_pcie_error_detected,
479 .mmio_enabled = liquidio_pcie_mmio_enabled,
480 .slot_reset = liquidio_pcie_slot_reset,
481 .resume = liquidio_pcie_resume,
482};
483
484static const struct pci_device_id liquidio_pci_tbl[] = {
485 { /* 68xx */
486 PCI_VENDOR_ID_CAVIUM, 0x91, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0
487 },
488 { /* 66xx */
489 PCI_VENDOR_ID_CAVIUM, 0x92, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0
490 },
Raghu Vatsavayie86b1ab2016-08-31 11:03:24 -0700491 { /* 23xx pf */
492 PCI_VENDOR_ID_CAVIUM, 0x9702, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0
493 },
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700494 {
495 0, 0, 0, 0, 0, 0, 0
496 }
497};
498MODULE_DEVICE_TABLE(pci, liquidio_pci_tbl);
499
500static struct pci_driver liquidio_pci_driver = {
501 .name = "LiquidIO",
502 .id_table = liquidio_pci_tbl,
503 .probe = liquidio_probe,
504 .remove = liquidio_remove,
505 .err_handler = &liquidio_err_handler, /* For AER */
506
507#ifdef CONFIG_PM
508 .suspend = liquidio_suspend,
509 .resume = liquidio_resume,
510#endif
Raghu Vatsavayica6139f2016-11-14 15:54:40 -0800511#ifdef CONFIG_PCI_IOV
512 .sriov_configure = liquidio_enable_sriov,
513#endif
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700514};
515
516/**
517 * \brief register PCI driver
518 */
519static int liquidio_init_pci(void)
520{
521 return pci_register_driver(&liquidio_pci_driver);
522}
523
524/**
525 * \brief unregister PCI driver
526 */
527static void liquidio_deinit_pci(void)
528{
529 pci_unregister_driver(&liquidio_pci_driver);
530}
531
532/**
533 * \brief check interface state
534 * @param lio per-network private data
535 * @param state_flag flag state to check
536 */
537static inline int ifstate_check(struct lio *lio, int state_flag)
538{
539 return atomic_read(&lio->ifstate) & state_flag;
540}
541
542/**
543 * \brief set interface state
544 * @param lio per-network private data
545 * @param state_flag flag state to set
546 */
547static inline void ifstate_set(struct lio *lio, int state_flag)
548{
549 atomic_set(&lio->ifstate, (atomic_read(&lio->ifstate) | state_flag));
550}
551
552/**
553 * \brief clear interface state
554 * @param lio per-network private data
555 * @param state_flag flag state to clear
556 */
557static inline void ifstate_reset(struct lio *lio, int state_flag)
558{
559 atomic_set(&lio->ifstate, (atomic_read(&lio->ifstate) & ~(state_flag)));
560}
561
562/**
563 * \brief Stop Tx queues
564 * @param netdev network device
565 */
566static inline void txqs_stop(struct net_device *netdev)
567{
568 if (netif_is_multiqueue(netdev)) {
569 int i;
570
571 for (i = 0; i < netdev->num_tx_queues; i++)
572 netif_stop_subqueue(netdev, i);
573 } else {
574 netif_stop_queue(netdev);
575 }
576}
577
578/**
579 * \brief Start Tx queues
580 * @param netdev network device
581 */
582static inline void txqs_start(struct net_device *netdev)
583{
584 if (netif_is_multiqueue(netdev)) {
585 int i;
586
587 for (i = 0; i < netdev->num_tx_queues; i++)
588 netif_start_subqueue(netdev, i);
589 } else {
590 netif_start_queue(netdev);
591 }
592}
593
594/**
595 * \brief Wake Tx queues
596 * @param netdev network device
597 */
598static inline void txqs_wake(struct net_device *netdev)
599{
Raghu Vatsavayi1f164712016-06-21 22:53:11 -0700600 struct lio *lio = GET_LIO(netdev);
601
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700602 if (netif_is_multiqueue(netdev)) {
603 int i;
604
Raghu Vatsavayi1f164712016-06-21 22:53:11 -0700605 for (i = 0; i < netdev->num_tx_queues; i++) {
606 int qno = lio->linfo.txpciq[i %
607 (lio->linfo.num_txpciq)].s.q_no;
608
609 if (__netif_subqueue_stopped(netdev, i)) {
610 INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, qno,
611 tx_restart, 1);
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -0700612 netif_wake_subqueue(netdev, i);
Raghu Vatsavayi1f164712016-06-21 22:53:11 -0700613 }
614 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700615 } else {
Raghu Vatsavayi1f164712016-06-21 22:53:11 -0700616 INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, lio->txq,
617 tx_restart, 1);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700618 netif_wake_queue(netdev);
619 }
620}
621
622/**
623 * \brief Stop Tx queue
624 * @param netdev network device
625 */
626static void stop_txq(struct net_device *netdev)
627{
628 txqs_stop(netdev);
629}
630
631/**
632 * \brief Start Tx queue
633 * @param netdev network device
634 */
635static void start_txq(struct net_device *netdev)
636{
637 struct lio *lio = GET_LIO(netdev);
638
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -0700639 if (lio->linfo.link.s.link_up) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700640 txqs_start(netdev);
641 return;
642 }
643}
644
645/**
646 * \brief Wake a queue
647 * @param netdev network device
648 * @param q which queue to wake
649 */
650static inline void wake_q(struct net_device *netdev, int q)
651{
652 if (netif_is_multiqueue(netdev))
653 netif_wake_subqueue(netdev, q);
654 else
655 netif_wake_queue(netdev);
656}
657
658/**
659 * \brief Stop a queue
660 * @param netdev network device
661 * @param q which queue to stop
662 */
663static inline void stop_q(struct net_device *netdev, int q)
664{
665 if (netif_is_multiqueue(netdev))
666 netif_stop_subqueue(netdev, q);
667 else
668 netif_stop_queue(netdev);
669}
670
671/**
672 * \brief Check Tx queue status, and take appropriate action
673 * @param lio per-network private data
674 * @returns 0 if full, number of queues woken up otherwise
675 */
676static inline int check_txq_status(struct lio *lio)
677{
678 int ret_val = 0;
679
680 if (netif_is_multiqueue(lio->netdev)) {
681 int numqs = lio->netdev->num_tx_queues;
682 int q, iq = 0;
683
684 /* check each sub-queue state */
685 for (q = 0; q < numqs; q++) {
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -0700686 iq = lio->linfo.txpciq[q %
687 (lio->linfo.num_txpciq)].s.q_no;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700688 if (octnet_iq_is_full(lio->oct_dev, iq))
689 continue;
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -0700690 if (__netif_subqueue_stopped(lio->netdev, q)) {
691 wake_q(lio->netdev, q);
Raghu Vatsavayi1f164712016-06-21 22:53:11 -0700692 INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, iq,
693 tx_restart, 1);
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -0700694 ret_val++;
695 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700696 }
697 } else {
698 if (octnet_iq_is_full(lio->oct_dev, lio->txq))
699 return 0;
700 wake_q(lio->netdev, lio->txq);
Raghu Vatsavayi1f164712016-06-21 22:53:11 -0700701 INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, lio->txq,
702 tx_restart, 1);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700703 ret_val = 1;
704 }
705 return ret_val;
706}
707
708/**
709 * Remove the node at the head of the list. The list would be empty at
710 * the end of this call if there are no more nodes in the list.
711 */
712static inline struct list_head *list_delete_head(struct list_head *root)
713{
714 struct list_head *node;
715
716 if ((root->prev == root) && (root->next == root))
717 node = NULL;
718 else
719 node = root->next;
720
721 if (node)
722 list_del(node);
723
724 return node;
725}
726
727/**
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700728 * \brief Delete gather lists
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700729 * @param lio per-network private data
730 */
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700731static void delete_glists(struct lio *lio)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700732{
733 struct octnic_gather *g;
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700734 int i;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700735
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700736 if (!lio->glist)
737 return;
738
739 for (i = 0; i < lio->linfo.num_txpciq; i++) {
740 do {
741 g = (struct octnic_gather *)
742 list_delete_head(&lio->glist[i]);
743 if (g) {
744 if (g->sg) {
745 dma_unmap_single(&lio->oct_dev->
746 pci_dev->dev,
747 g->sg_dma_ptr,
748 g->sg_size,
749 DMA_TO_DEVICE);
750 kfree((void *)((unsigned long)g->sg -
751 g->adjust));
752 }
753 kfree(g);
754 }
755 } while (g);
756 }
757
758 kfree((void *)lio->glist);
Raghu Vatsavayi515e7522016-11-14 15:54:44 -0800759 kfree((void *)lio->glist_lock);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700760}
761
762/**
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700763 * \brief Setup gather lists
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700764 * @param lio per-network private data
765 */
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700766static int setup_glists(struct octeon_device *oct, struct lio *lio, int num_iqs)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700767{
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700768 int i, j;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700769 struct octnic_gather *g;
770
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700771 lio->glist_lock = kcalloc(num_iqs, sizeof(*lio->glist_lock),
772 GFP_KERNEL);
773 if (!lio->glist_lock)
774 return 1;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700775
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700776 lio->glist = kcalloc(num_iqs, sizeof(*lio->glist),
777 GFP_KERNEL);
778 if (!lio->glist) {
779 kfree((void *)lio->glist_lock);
780 return 1;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700781 }
782
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700783 for (i = 0; i < num_iqs; i++) {
784 int numa_node = cpu_to_node(i % num_online_cpus());
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700785
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -0700786 spin_lock_init(&lio->glist_lock[i]);
787
788 INIT_LIST_HEAD(&lio->glist[i]);
789
790 for (j = 0; j < lio->tx_qsize; j++) {
791 g = kzalloc_node(sizeof(*g), GFP_KERNEL,
792 numa_node);
793 if (!g)
794 g = kzalloc(sizeof(*g), GFP_KERNEL);
795 if (!g)
796 break;
797
798 g->sg_size = ((ROUNDUP4(OCTNIC_MAX_SG) >> 2) *
799 OCT_SG_ENTRY_SIZE);
800
801 g->sg = kmalloc_node(g->sg_size + 8,
802 GFP_KERNEL, numa_node);
803 if (!g->sg)
804 g->sg = kmalloc(g->sg_size + 8, GFP_KERNEL);
805 if (!g->sg) {
806 kfree(g);
807 break;
808 }
809
810 /* The gather component should be aligned on 64-bit
811 * boundary
812 */
813 if (((unsigned long)g->sg) & 7) {
814 g->adjust = 8 - (((unsigned long)g->sg) & 7);
815 g->sg = (struct octeon_sg_entry *)
816 ((unsigned long)g->sg + g->adjust);
817 }
818 g->sg_dma_ptr = dma_map_single(&oct->pci_dev->dev,
819 g->sg, g->sg_size,
820 DMA_TO_DEVICE);
821 if (dma_mapping_error(&oct->pci_dev->dev,
822 g->sg_dma_ptr)) {
823 kfree((void *)((unsigned long)g->sg -
824 g->adjust));
825 kfree(g);
826 break;
827 }
828
829 list_add_tail(&g->list, &lio->glist[i]);
830 }
831
832 if (j != lio->tx_qsize) {
833 delete_glists(lio);
834 return 1;
835 }
836 }
837
838 return 0;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700839}
840
841/**
842 * \brief Print link information
843 * @param netdev network device
844 */
845static void print_link_info(struct net_device *netdev)
846{
847 struct lio *lio = GET_LIO(netdev);
848
849 if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED) {
850 struct oct_link_info *linfo = &lio->linfo;
851
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -0700852 if (linfo->link.s.link_up) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700853 netif_info(lio, link, lio->netdev, "%d Mbps %s Duplex UP\n",
854 linfo->link.s.speed,
855 (linfo->link.s.duplex) ? "Full" : "Half");
856 } else {
857 netif_info(lio, link, lio->netdev, "Link Down\n");
858 }
859 }
860}
861
862/**
Raghu Vatsavayi7b6b6c92016-09-01 11:16:04 -0700863 * \brief Routine to notify MTU change
864 * @param work work_struct data structure
865 */
866static void octnet_link_status_change(struct work_struct *work)
867{
868 struct cavium_wk *wk = (struct cavium_wk *)work;
869 struct lio *lio = (struct lio *)wk->ctxptr;
870
871 rtnl_lock();
872 call_netdevice_notifiers(NETDEV_CHANGEMTU, lio->netdev);
873 rtnl_unlock();
874}
875
876/**
877 * \brief Sets up the mtu status change work
878 * @param netdev network device
879 */
880static inline int setup_link_status_change_wq(struct net_device *netdev)
881{
882 struct lio *lio = GET_LIO(netdev);
883 struct octeon_device *oct = lio->oct_dev;
884
885 lio->link_status_wq.wq = alloc_workqueue("link-status",
886 WQ_MEM_RECLAIM, 0);
887 if (!lio->link_status_wq.wq) {
888 dev_err(&oct->pci_dev->dev, "unable to create cavium link status wq\n");
889 return -1;
890 }
891 INIT_DELAYED_WORK(&lio->link_status_wq.wk.work,
892 octnet_link_status_change);
893 lio->link_status_wq.wk.ctxptr = lio;
894
895 return 0;
896}
897
898static inline void cleanup_link_status_change_wq(struct net_device *netdev)
899{
900 struct lio *lio = GET_LIO(netdev);
901
902 if (lio->link_status_wq.wq) {
903 cancel_delayed_work_sync(&lio->link_status_wq.wk.work);
904 destroy_workqueue(lio->link_status_wq.wq);
905 }
906}
907
908/**
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700909 * \brief Update link status
910 * @param netdev network device
911 * @param ls link status structure
912 *
913 * Called on receipt of a link status response from the core application to
914 * update each interface's link status.
915 */
916static inline void update_link_status(struct net_device *netdev,
917 union oct_link_status *ls)
918{
919 struct lio *lio = GET_LIO(netdev);
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -0700920 int changed = (lio->linfo.link.u64 != ls->u64);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700921
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -0700922 lio->linfo.link.u64 = ls->u64;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700923
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -0700924 if ((lio->intf_open) && (changed)) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700925 print_link_info(netdev);
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -0700926 lio->link_changes++;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700927
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -0700928 if (lio->linfo.link.s.link_up) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700929 netif_carrier_on(netdev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700930 txqs_wake(netdev);
931 } else {
932 netif_carrier_off(netdev);
933 stop_txq(netdev);
934 }
935 }
936}
937
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -0700938/* Runs in interrupt context. */
939static void update_txq_status(struct octeon_device *oct, int iq_num)
940{
941 struct net_device *netdev;
942 struct lio *lio;
943 struct octeon_instr_queue *iq = oct->instr_queue[iq_num];
944
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -0700945 netdev = oct->props[iq->ifidx].netdev;
946
947 /* This is needed because the first IQ does not have
948 * a netdev associated with it.
949 */
950 if (!netdev)
951 return;
952
953 lio = GET_LIO(netdev);
954 if (netif_is_multiqueue(netdev)) {
955 if (__netif_subqueue_stopped(netdev, iq->q_index) &&
956 lio->linfo.link.s.link_up &&
957 (!octnet_iq_is_full(oct, iq_num))) {
Raghu Vatsavayi1f164712016-06-21 22:53:11 -0700958 INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, iq_num,
959 tx_restart, 1);
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -0700960 netif_wake_subqueue(netdev, iq->q_index);
961 } else {
Raghu Vatsavayi1f164712016-06-21 22:53:11 -0700962 if (!octnet_iq_is_full(oct, lio->txq)) {
963 INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev,
964 lio->txq,
965 tx_restart, 1);
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -0700966 wake_q(netdev, lio->txq);
Raghu Vatsavayi1f164712016-06-21 22:53:11 -0700967 }
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -0700968 }
969 }
970}
971
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -0700972static
973int liquidio_schedule_msix_droq_pkt_handler(struct octeon_droq *droq, u64 ret)
974{
975 struct octeon_device *oct = droq->oct_dev;
976 struct octeon_device_priv *oct_priv =
977 (struct octeon_device_priv *)oct->priv;
978
979 if (droq->ops.poll_mode) {
980 droq->ops.napi_fn(droq);
981 } else {
982 if (ret & MSIX_PO_INT) {
983 tasklet_schedule(&oct_priv->droq_tasklet);
984 return 1;
985 }
986 /* this will be flushed periodically by check iq db */
987 if (ret & MSIX_PI_INT)
988 return 0;
989 }
990 return 0;
991}
992
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700993/**
994 * \brief Droq packet processor sceduler
995 * @param oct octeon device
996 */
Raghu Vatsavayi9ded1a52016-09-01 11:16:10 -0700997static void liquidio_schedule_droq_pkt_handlers(struct octeon_device *oct)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -0700998{
999 struct octeon_device_priv *oct_priv =
1000 (struct octeon_device_priv *)oct->priv;
1001 u64 oq_no;
1002 struct octeon_droq *droq;
1003
1004 if (oct->int_status & OCT_DEV_INTR_PKT_DATA) {
Raghu Vatsavayi63da8402016-06-21 22:53:03 -07001005 for (oq_no = 0; oq_no < MAX_OCTEON_OUTPUT_QUEUES(oct);
1006 oq_no++) {
Raghu Vatsavayi763185a2016-11-14 15:54:45 -08001007 if (!(oct->droq_intr & BIT_ULL(oq_no)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001008 continue;
1009
1010 droq = oct->droq[oq_no];
1011
1012 if (droq->ops.poll_mode) {
1013 droq->ops.napi_fn(droq);
1014 oct_priv->napi_mask |= (1 << oq_no);
1015 } else {
1016 tasklet_schedule(&oct_priv->droq_tasklet);
1017 }
1018 }
1019 }
1020}
1021
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001022static irqreturn_t
1023liquidio_msix_intr_handler(int irq __attribute__((unused)), void *dev)
1024{
1025 u64 ret;
1026 struct octeon_ioq_vector *ioq_vector = (struct octeon_ioq_vector *)dev;
1027 struct octeon_device *oct = ioq_vector->oct_dev;
1028 struct octeon_droq *droq = oct->droq[ioq_vector->droq_index];
1029
1030 ret = oct->fn_list.msix_interrupt_handler(ioq_vector);
1031
1032 if ((ret & MSIX_PO_INT) || (ret & MSIX_PI_INT))
1033 liquidio_schedule_msix_droq_pkt_handler(droq, ret);
1034
1035 return IRQ_HANDLED;
1036}
1037
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001038/**
1039 * \brief Interrupt handler for octeon
1040 * @param irq unused
1041 * @param dev octeon device
1042 */
1043static
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001044irqreturn_t liquidio_legacy_intr_handler(int irq __attribute__((unused)),
1045 void *dev)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001046{
1047 struct octeon_device *oct = (struct octeon_device *)dev;
1048 irqreturn_t ret;
1049
1050 /* Disable our interrupts for the duration of ISR */
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001051 oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001052
1053 ret = oct->fn_list.process_interrupt_regs(oct);
1054
1055 if (ret == IRQ_HANDLED)
1056 liquidio_schedule_droq_pkt_handlers(oct);
1057
1058 /* Re-enable our interrupts */
1059 if (!(atomic_read(&oct->status) == OCT_DEV_IN_RESET))
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001060 oct->fn_list.enable_interrupt(oct, OCTEON_ALL_INTR);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001061
1062 return ret;
1063}
1064
1065/**
1066 * \brief Setup interrupt for octeon device
1067 * @param oct octeon device
1068 *
1069 * Enable interrupt in Octeon device as given in the PCI interrupt mask.
1070 */
1071static int octeon_setup_interrupt(struct octeon_device *oct)
1072{
1073 int irqret, err;
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001074 struct msix_entry *msix_entries;
1075 int i;
1076 int num_ioq_vectors;
1077 int num_alloc_ioq_vectors;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001078
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001079 if (OCTEON_CN23XX_PF(oct) && oct->msix_on) {
1080 oct->num_msix_irqs = oct->sriov_info.num_pf_rings;
1081 /* one non ioq interrupt for handling sli_mac_pf_int_sum */
1082 oct->num_msix_irqs += 1;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001083
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001084 oct->msix_entries = kcalloc(
1085 oct->num_msix_irqs, sizeof(struct msix_entry), GFP_KERNEL);
1086 if (!oct->msix_entries)
1087 return 1;
1088
1089 msix_entries = (struct msix_entry *)oct->msix_entries;
1090 /*Assumption is that pf msix vectors start from pf srn to pf to
1091 * trs and not from 0. if not change this code
1092 */
1093 for (i = 0; i < oct->num_msix_irqs - 1; i++)
1094 msix_entries[i].entry = oct->sriov_info.pf_srn + i;
1095 msix_entries[oct->num_msix_irqs - 1].entry =
1096 oct->sriov_info.trs;
1097 num_alloc_ioq_vectors = pci_enable_msix_range(
1098 oct->pci_dev, msix_entries,
1099 oct->num_msix_irqs,
1100 oct->num_msix_irqs);
1101 if (num_alloc_ioq_vectors < 0) {
1102 dev_err(&oct->pci_dev->dev, "unable to Allocate MSI-X interrupts\n");
1103 kfree(oct->msix_entries);
1104 oct->msix_entries = NULL;
1105 return 1;
1106 }
1107 dev_dbg(&oct->pci_dev->dev, "OCTEON: Enough MSI-X interrupts are allocated...\n");
1108
1109 num_ioq_vectors = oct->num_msix_irqs;
1110
1111 /** For PF, there is one non-ioq interrupt handler */
1112 num_ioq_vectors -= 1;
1113 irqret = request_irq(msix_entries[num_ioq_vectors].vector,
1114 liquidio_legacy_intr_handler, 0, "octeon",
1115 oct);
1116 if (irqret) {
1117 dev_err(&oct->pci_dev->dev,
1118 "OCTEON: Request_irq failed for MSIX interrupt Error: %d\n",
1119 irqret);
1120 pci_disable_msix(oct->pci_dev);
1121 kfree(oct->msix_entries);
1122 oct->msix_entries = NULL;
1123 return 1;
1124 }
1125
1126 for (i = 0; i < num_ioq_vectors; i++) {
1127 irqret = request_irq(msix_entries[i].vector,
1128 liquidio_msix_intr_handler, 0,
1129 "octeon", &oct->ioq_vector[i]);
1130 if (irqret) {
1131 dev_err(&oct->pci_dev->dev,
1132 "OCTEON: Request_irq failed for MSIX interrupt Error: %d\n",
1133 irqret);
1134 /** Freeing the non-ioq irq vector here . */
1135 free_irq(msix_entries[num_ioq_vectors].vector,
1136 oct);
1137
1138 while (i) {
1139 i--;
1140 /** clearing affinity mask. */
1141 irq_set_affinity_hint(
1142 msix_entries[i].vector, NULL);
1143 free_irq(msix_entries[i].vector,
1144 &oct->ioq_vector[i]);
1145 }
1146 pci_disable_msix(oct->pci_dev);
1147 kfree(oct->msix_entries);
1148 oct->msix_entries = NULL;
1149 return 1;
1150 }
1151 oct->ioq_vector[i].vector = msix_entries[i].vector;
1152 /* assign the cpu mask for this msix interrupt vector */
1153 irq_set_affinity_hint(
1154 msix_entries[i].vector,
1155 (&oct->ioq_vector[i].affinity_mask));
1156 }
1157 dev_dbg(&oct->pci_dev->dev, "OCTEON[%d]: MSI-X enabled\n",
1158 oct->octeon_id);
1159 } else {
1160 err = pci_enable_msi(oct->pci_dev);
1161 if (err)
1162 dev_warn(&oct->pci_dev->dev, "Reverting to legacy interrupts. Error: %d\n",
1163 err);
1164 else
1165 oct->flags |= LIO_FLAG_MSI_ENABLED;
1166
1167 irqret = request_irq(oct->pci_dev->irq,
1168 liquidio_legacy_intr_handler, IRQF_SHARED,
1169 "octeon", oct);
1170 if (irqret) {
1171 if (oct->flags & LIO_FLAG_MSI_ENABLED)
1172 pci_disable_msi(oct->pci_dev);
1173 dev_err(&oct->pci_dev->dev, "Request IRQ failed with code: %d\n",
1174 irqret);
1175 return 1;
1176 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001177 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001178 return 0;
1179}
1180
Raghu Vatsavayi9ff1a9b2016-09-01 11:16:09 -07001181static int liquidio_watchdog(void *param)
1182{
1183 u64 wdog;
1184 u16 mask_of_stuck_cores = 0;
1185 u16 mask_of_crashed_cores = 0;
1186 int core_num;
1187 u8 core_is_stuck[LIO_MAX_CORES];
1188 u8 core_crashed[LIO_MAX_CORES];
1189 struct octeon_device *oct = param;
1190
1191 memset(core_is_stuck, 0, sizeof(core_is_stuck));
1192 memset(core_crashed, 0, sizeof(core_crashed));
1193
1194 while (!kthread_should_stop()) {
1195 mask_of_crashed_cores =
1196 (u16)octeon_read_csr64(oct, CN23XX_SLI_SCRATCH2);
1197
1198 for (core_num = 0; core_num < LIO_MAX_CORES; core_num++) {
1199 if (!core_is_stuck[core_num]) {
1200 wdog = lio_pci_readq(oct, CIU3_WDOG(core_num));
1201
1202 /* look at watchdog state field */
1203 wdog &= CIU3_WDOG_MASK;
1204 if (wdog) {
1205 /* this watchdog timer has expired */
1206 core_is_stuck[core_num] =
1207 LIO_MONITOR_WDOG_EXPIRE;
1208 mask_of_stuck_cores |= (1 << core_num);
1209 }
1210 }
1211
1212 if (!core_crashed[core_num])
1213 core_crashed[core_num] =
1214 (mask_of_crashed_cores >> core_num) & 1;
1215 }
1216
1217 if (mask_of_stuck_cores) {
1218 for (core_num = 0; core_num < LIO_MAX_CORES;
1219 core_num++) {
1220 if (core_is_stuck[core_num] == 1) {
1221 dev_err(&oct->pci_dev->dev,
1222 "ERROR: Octeon core %d is stuck!\n",
1223 core_num);
1224 /* 2 means we have printk'd an error
1225 * so no need to repeat the same printk
1226 */
1227 core_is_stuck[core_num] =
1228 LIO_MONITOR_CORE_STUCK_MSGD;
1229 }
1230 }
1231 }
1232
1233 if (mask_of_crashed_cores) {
1234 for (core_num = 0; core_num < LIO_MAX_CORES;
1235 core_num++) {
1236 if (core_crashed[core_num] == 1) {
1237 dev_err(&oct->pci_dev->dev,
1238 "ERROR: Octeon core %d crashed! See oct-fwdump for details.\n",
1239 core_num);
1240 /* 2 means we have printk'd an error
1241 * so no need to repeat the same printk
1242 */
1243 core_crashed[core_num] =
1244 LIO_MONITOR_CORE_STUCK_MSGD;
1245 }
1246 }
1247 }
1248#ifdef CONFIG_MODULE_UNLOAD
1249 if (mask_of_stuck_cores || mask_of_crashed_cores) {
1250 /* make module refcount=0 so that rmmod will work */
1251 long refcount;
1252
1253 refcount = module_refcount(THIS_MODULE);
1254
1255 while (refcount > 0) {
1256 module_put(THIS_MODULE);
1257 refcount = module_refcount(THIS_MODULE);
1258 }
1259
1260 /* compensate for and withstand an unlikely (but still
1261 * possible) race condition
1262 */
1263 while (refcount < 0) {
1264 try_module_get(THIS_MODULE);
1265 refcount = module_refcount(THIS_MODULE);
1266 }
1267 }
1268#endif
1269 /* sleep for two seconds */
1270 set_current_state(TASK_INTERRUPTIBLE);
1271 schedule_timeout(2 * HZ);
1272 }
1273
1274 return 0;
1275}
1276
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001277/**
1278 * \brief PCI probe handler
1279 * @param pdev PCI device structure
1280 * @param ent unused
1281 */
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -07001282static int
1283liquidio_probe(struct pci_dev *pdev,
1284 const struct pci_device_id *ent __attribute__((unused)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001285{
1286 struct octeon_device *oct_dev = NULL;
1287 struct handshake *hs;
1288
1289 oct_dev = octeon_allocate_device(pdev->device,
1290 sizeof(struct octeon_device_priv));
1291 if (!oct_dev) {
1292 dev_err(&pdev->dev, "Unable to allocate device\n");
1293 return -ENOMEM;
1294 }
1295
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001296 if (pdev->device == OCTEON_CN23XX_PF_VID)
1297 oct_dev->msix_on = LIO_FLAG_MSIX_ENABLED;
1298
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001299 dev_info(&pdev->dev, "Initializing device %x:%x.\n",
1300 (u32)pdev->vendor, (u32)pdev->device);
1301
1302 /* Assign octeon_device for this device to the private data area. */
1303 pci_set_drvdata(pdev, oct_dev);
1304
1305 /* set linux specific device pointer */
1306 oct_dev->pci_dev = (void *)pdev;
1307
1308 hs = &handshake[oct_dev->octeon_id];
1309 init_completion(&hs->init);
1310 init_completion(&hs->started);
1311 hs->pci_dev = pdev;
1312
1313 if (oct_dev->octeon_id == 0)
1314 /* first LiquidIO NIC is detected */
1315 complete(&first_stage);
1316
1317 if (octeon_device_init(oct_dev)) {
Raghu Vatsavayi515e7522016-11-14 15:54:44 -08001318 complete(&hs->init);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001319 liquidio_remove(pdev);
1320 return -ENOMEM;
1321 }
1322
Raghu Vatsavayi9ff1a9b2016-09-01 11:16:09 -07001323 if (OCTEON_CN23XX_PF(oct_dev)) {
1324 u64 scratch1;
1325 u8 bus, device, function;
1326
1327 scratch1 = octeon_read_csr64(oct_dev, CN23XX_SLI_SCRATCH1);
1328 if (!(scratch1 & 4ULL)) {
1329 /* Bit 2 of SLI_SCRATCH_1 is a flag that indicates that
1330 * the lio watchdog kernel thread is running for this
1331 * NIC. Each NIC gets one watchdog kernel thread.
1332 */
1333 scratch1 |= 4ULL;
1334 octeon_write_csr64(oct_dev, CN23XX_SLI_SCRATCH1,
1335 scratch1);
1336
1337 bus = pdev->bus->number;
1338 device = PCI_SLOT(pdev->devfn);
1339 function = PCI_FUNC(pdev->devfn);
1340 oct_dev->watchdog_task = kthread_create(
1341 liquidio_watchdog, oct_dev,
1342 "liowd/%02hhx:%02hhx.%hhx", bus, device, function);
Raghu Vatsavayi515e7522016-11-14 15:54:44 -08001343 if (!IS_ERR(oct_dev->watchdog_task)) {
1344 wake_up_process(oct_dev->watchdog_task);
1345 } else {
1346 oct_dev->watchdog_task = NULL;
1347 dev_err(&oct_dev->pci_dev->dev,
1348 "failed to create kernel_thread\n");
1349 liquidio_remove(pdev);
1350 return -1;
1351 }
Raghu Vatsavayi9ff1a9b2016-09-01 11:16:09 -07001352 }
1353 }
1354
Raghu Vatsavayi1f164712016-06-21 22:53:11 -07001355 oct_dev->rx_pause = 1;
1356 oct_dev->tx_pause = 1;
1357
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001358 dev_dbg(&oct_dev->pci_dev->dev, "Device is ready\n");
1359
1360 return 0;
1361}
1362
1363/**
1364 *\brief Destroy resources associated with octeon device
1365 * @param pdev PCI device structure
1366 * @param ent unused
1367 */
1368static void octeon_destroy_resources(struct octeon_device *oct)
1369{
1370 int i;
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001371 struct msix_entry *msix_entries;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001372 struct octeon_device_priv *oct_priv =
1373 (struct octeon_device_priv *)oct->priv;
1374
1375 struct handshake *hs;
1376
1377 switch (atomic_read(&oct->status)) {
1378 case OCT_DEV_RUNNING:
1379 case OCT_DEV_CORE_OK:
1380
1381 /* No more instructions will be forwarded. */
1382 atomic_set(&oct->status, OCT_DEV_IN_RESET);
1383
1384 oct->app_mode = CVM_DRV_INVALID_APP;
1385 dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n",
1386 lio_get_state_string(&oct->status));
1387
1388 schedule_timeout_uninterruptible(HZ / 10);
1389
1390 /* fallthrough */
1391 case OCT_DEV_HOST_OK:
1392
1393 /* fallthrough */
1394 case OCT_DEV_CONSOLE_INIT_DONE:
1395 /* Remove any consoles */
1396 octeon_remove_consoles(oct);
1397
1398 /* fallthrough */
1399 case OCT_DEV_IO_QUEUES_DONE:
1400 if (wait_for_pending_requests(oct))
1401 dev_err(&oct->pci_dev->dev, "There were pending requests\n");
1402
1403 if (lio_wait_for_instr_fetch(oct))
1404 dev_err(&oct->pci_dev->dev, "IQ had pending instructions\n");
1405
1406 /* Disable the input and output queues now. No more packets will
1407 * arrive from Octeon, but we should wait for all packet
1408 * processing to finish.
1409 */
1410 oct->fn_list.disable_io_queues(oct);
1411
1412 if (lio_wait_for_oq_pkts(oct))
1413 dev_err(&oct->pci_dev->dev, "OQ had pending packets\n");
1414
Raghu Vatsavayi515e7522016-11-14 15:54:44 -08001415 /* fallthrough */
1416 case OCT_DEV_INTR_SET_DONE:
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001417 /* Disable interrupts */
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001418 oct->fn_list.disable_interrupt(oct, OCTEON_ALL_INTR);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001419
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001420 if (oct->msix_on) {
1421 msix_entries = (struct msix_entry *)oct->msix_entries;
1422 for (i = 0; i < oct->num_msix_irqs - 1; i++) {
1423 /* clear the affinity_cpumask */
1424 irq_set_affinity_hint(msix_entries[i].vector,
1425 NULL);
1426 free_irq(msix_entries[i].vector,
1427 &oct->ioq_vector[i]);
1428 }
1429 /* non-iov vector's argument is oct struct */
1430 free_irq(msix_entries[i].vector, oct);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001431
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001432 pci_disable_msix(oct->pci_dev);
1433 kfree(oct->msix_entries);
1434 oct->msix_entries = NULL;
1435 } else {
1436 /* Release the interrupt line */
1437 free_irq(oct->pci_dev->irq, oct);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001438
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001439 if (oct->flags & LIO_FLAG_MSI_ENABLED)
1440 pci_disable_msi(oct->pci_dev);
1441 }
1442
Raghu Vatsavayi515e7522016-11-14 15:54:44 -08001443 /* fallthrough */
1444 case OCT_DEV_MSIX_ALLOC_VECTOR_DONE:
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001445 if (OCTEON_CN23XX_PF(oct))
1446 octeon_free_ioq_vector(oct);
Raghu Vatsavayi5d655562016-11-14 15:54:42 -08001447
1448 /* fallthrough */
1449 case OCT_DEV_MBOX_SETUP_DONE:
1450 if (OCTEON_CN23XX_PF(oct))
1451 oct->fn_list.free_mbox(oct);
1452
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001453 /* fallthrough */
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001454 case OCT_DEV_IN_RESET:
1455 case OCT_DEV_DROQ_INIT_DONE:
Raghu Vatsavayi763185a2016-11-14 15:54:45 -08001456 /* Wait for any pending operations */
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001457 mdelay(100);
Raghu Vatsavayi63da8402016-06-21 22:53:03 -07001458 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07001459 if (!(oct->io_qmask.oq & BIT_ULL(i)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001460 continue;
1461 octeon_delete_droq(oct, i);
1462 }
1463
1464 /* Force any pending handshakes to complete */
1465 for (i = 0; i < MAX_OCTEON_DEVICES; i++) {
1466 hs = &handshake[i];
1467
1468 if (hs->pci_dev) {
1469 handshake[oct->octeon_id].init_ok = 0;
1470 complete(&handshake[oct->octeon_id].init);
1471 handshake[oct->octeon_id].started_ok = 0;
1472 complete(&handshake[oct->octeon_id].started);
1473 }
1474 }
1475
1476 /* fallthrough */
1477 case OCT_DEV_RESP_LIST_INIT_DONE:
1478 octeon_delete_response_list(oct);
1479
1480 /* fallthrough */
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001481 case OCT_DEV_INSTR_QUEUE_INIT_DONE:
Raghu Vatsavayi63da8402016-06-21 22:53:03 -07001482 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
Raghu Vatsavayi5b823512016-09-01 11:16:07 -07001483 if (!(oct->io_qmask.iq & BIT_ULL(i)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001484 continue;
1485 octeon_delete_instr_queue(oct, i);
1486 }
Raghu Vatsavayica6139f2016-11-14 15:54:40 -08001487#ifdef CONFIG_PCI_IOV
1488 if (oct->sriov_info.sriov_enabled)
1489 pci_disable_sriov(oct->pci_dev);
1490#endif
Raghu Vatsavayi5b823512016-09-01 11:16:07 -07001491 /* fallthrough */
1492 case OCT_DEV_SC_BUFF_POOL_INIT_DONE:
1493 octeon_free_sc_buffer_pool(oct);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001494
1495 /* fallthrough */
1496 case OCT_DEV_DISPATCH_INIT_DONE:
1497 octeon_delete_dispatch_list(oct);
1498 cancel_delayed_work_sync(&oct->nic_poll_work.work);
1499
1500 /* fallthrough */
1501 case OCT_DEV_PCI_MAP_DONE:
Raghu Vatsavayi60b48c52016-06-21 22:53:09 -07001502 /* Soft reset the octeon device before exiting */
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07001503 if ((!OCTEON_CN23XX_PF(oct)) || !oct->octeon_id)
1504 oct->fn_list.soft_reset(oct);
Raghu Vatsavayi60b48c52016-06-21 22:53:09 -07001505
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001506 octeon_unmap_pci_barx(oct, 0);
1507 octeon_unmap_pci_barx(oct, 1);
1508
1509 /* fallthrough */
Raghu Vatsavayi515e7522016-11-14 15:54:44 -08001510 case OCT_DEV_PCI_ENABLE_DONE:
1511 pci_clear_master(oct->pci_dev);
Raghu Vatsavayi60b48c52016-06-21 22:53:09 -07001512 /* Disable the device, releasing the PCI INT */
1513 pci_disable_device(oct->pci_dev);
1514
Raghu Vatsavayi515e7522016-11-14 15:54:44 -08001515 /* fallthrough */
1516 case OCT_DEV_BEGIN_STATE:
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001517 /* Nothing to be done here either */
1518 break;
Raghu Vatsavayia2c64b62016-07-03 13:56:55 -07001519 } /* end switch (oct->status) */
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001520
1521 tasklet_kill(&oct_priv->droq_tasklet);
1522}
1523
1524/**
Raghu Vatsavayiafdf8412016-09-01 11:16:05 -07001525 * \brief Callback for rx ctrl
1526 * @param status status of request
1527 * @param buf pointer to resp structure
1528 */
1529static void rx_ctl_callback(struct octeon_device *oct,
1530 u32 status,
1531 void *buf)
1532{
1533 struct octeon_soft_command *sc = (struct octeon_soft_command *)buf;
1534 struct liquidio_rx_ctl_context *ctx;
1535
1536 ctx = (struct liquidio_rx_ctl_context *)sc->ctxptr;
1537
1538 oct = lio_get_device(ctx->octeon_id);
1539 if (status)
1540 dev_err(&oct->pci_dev->dev, "rx ctl instruction failed. Status: %llx\n",
1541 CVM_CAST64(status));
1542 WRITE_ONCE(ctx->cond, 1);
1543
1544 /* This barrier is required to be sure that the response has been
1545 * written fully before waking up the handler
1546 */
1547 wmb();
1548
1549 wake_up_interruptible(&ctx->wc);
1550}
1551
1552/**
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001553 * \brief Send Rx control command
1554 * @param lio per-network private data
1555 * @param start_stop whether to start or stop
1556 */
1557static void send_rx_ctrl_cmd(struct lio *lio, int start_stop)
1558{
Raghu Vatsavayiafdf8412016-09-01 11:16:05 -07001559 struct octeon_soft_command *sc;
1560 struct liquidio_rx_ctl_context *ctx;
1561 union octnet_cmd *ncmd;
1562 int ctx_size = sizeof(struct liquidio_rx_ctl_context);
1563 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
1564 int retval;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001565
Raghu Vatsavayiafdf8412016-09-01 11:16:05 -07001566 if (oct->props[lio->ifidx].rx_on == start_stop)
1567 return;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001568
Raghu Vatsavayiafdf8412016-09-01 11:16:05 -07001569 sc = (struct octeon_soft_command *)
1570 octeon_alloc_soft_command(oct, OCTNET_CMD_SIZE,
1571 16, ctx_size);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001572
Raghu Vatsavayiafdf8412016-09-01 11:16:05 -07001573 ncmd = (union octnet_cmd *)sc->virtdptr;
1574 ctx = (struct liquidio_rx_ctl_context *)sc->ctxptr;
1575
1576 WRITE_ONCE(ctx->cond, 0);
1577 ctx->octeon_id = lio_get_device_id(oct);
1578 init_waitqueue_head(&ctx->wc);
1579
1580 ncmd->u64 = 0;
1581 ncmd->s.cmd = OCTNET_CMD_RX_CTL;
1582 ncmd->s.param1 = start_stop;
1583
1584 octeon_swap_8B_data((u64 *)ncmd, (OCTNET_CMD_SIZE >> 3));
1585
1586 sc->iq_no = lio->linfo.txpciq[0].s.q_no;
1587
1588 octeon_prepare_soft_command(oct, sc, OPCODE_NIC,
1589 OPCODE_NIC_CMD, 0, 0, 0);
1590
1591 sc->callback = rx_ctl_callback;
1592 sc->callback_arg = sc;
1593 sc->wait_time = 5000;
1594
1595 retval = octeon_send_soft_command(oct, sc);
1596 if (retval == IQ_SEND_FAILED) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001597 netif_info(lio, rx_err, lio->netdev, "Failed to send RX Control message\n");
Raghu Vatsavayiafdf8412016-09-01 11:16:05 -07001598 } else {
1599 /* Sleep on a wait queue till the cond flag indicates that the
1600 * response arrived or timed-out.
1601 */
1602 if (sleep_cond(&ctx->wc, &ctx->cond) == -EINTR)
1603 return;
1604 oct->props[lio->ifidx].rx_on = start_stop;
1605 }
1606
1607 octeon_free_soft_command(oct, sc);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001608}
1609
1610/**
1611 * \brief Destroy NIC device interface
1612 * @param oct octeon device
1613 * @param ifidx which interface to destroy
1614 *
1615 * Cleanup associated with each interface for an Octeon device when NIC
1616 * module is being unloaded or if initialization fails during load.
1617 */
1618static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx)
1619{
1620 struct net_device *netdev = oct->props[ifidx].netdev;
1621 struct lio *lio;
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07001622 struct napi_struct *napi, *n;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001623
1624 if (!netdev) {
1625 dev_err(&oct->pci_dev->dev, "%s No netdevice ptr for index %d\n",
1626 __func__, ifidx);
1627 return;
1628 }
1629
1630 lio = GET_LIO(netdev);
1631
1632 dev_dbg(&oct->pci_dev->dev, "NIC device cleanup\n");
1633
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001634 if (atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING)
Raghu Vatsavayiafdf8412016-09-01 11:16:05 -07001635 liquidio_stop(netdev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001636
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07001637 if (oct->props[lio->ifidx].napi_enabled == 1) {
1638 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
1639 napi_disable(napi);
1640
1641 oct->props[lio->ifidx].napi_enabled = 0;
Raghu Vatsavayi7b6b6c92016-09-01 11:16:04 -07001642
1643 if (OCTEON_CN23XX_PF(oct))
1644 oct->droq[0]->ops.poll_mode = 0;
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07001645 }
1646
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001647 if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED)
1648 unregister_netdev(netdev);
1649
Raghu Vatsavayi7b6b6c92016-09-01 11:16:04 -07001650 cleanup_link_status_change_wq(netdev);
1651
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07001652 delete_glists(lio);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001653
1654 free_netdev(netdev);
1655
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07001656 oct->props[ifidx].gmxport = -1;
1657
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001658 oct->props[ifidx].netdev = NULL;
1659}
1660
1661/**
1662 * \brief Stop complete NIC functionality
1663 * @param oct octeon device
1664 */
1665static int liquidio_stop_nic_module(struct octeon_device *oct)
1666{
1667 int i, j;
1668 struct lio *lio;
1669
1670 dev_dbg(&oct->pci_dev->dev, "Stopping network interfaces\n");
1671 if (!oct->ifcount) {
1672 dev_err(&oct->pci_dev->dev, "Init for Octeon was not completed\n");
1673 return 1;
1674 }
1675
Raghu Vatsavayi60441882016-06-21 22:53:08 -07001676 spin_lock_bh(&oct->cmd_resp_wqlock);
1677 oct->cmd_resp_state = OCT_DRV_OFFLINE;
1678 spin_unlock_bh(&oct->cmd_resp_wqlock);
1679
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001680 for (i = 0; i < oct->ifcount; i++) {
1681 lio = GET_LIO(oct->props[i].netdev);
1682 for (j = 0; j < lio->linfo.num_rxpciq; j++)
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07001683 octeon_unregister_droq_ops(oct,
1684 lio->linfo.rxpciq[j].s.q_no);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001685 }
1686
1687 for (i = 0; i < oct->ifcount; i++)
1688 liquidio_destroy_nic_device(oct, i);
1689
1690 dev_dbg(&oct->pci_dev->dev, "Network interfaces stopped\n");
1691 return 0;
1692}
1693
1694/**
1695 * \brief Cleans up resources at unload time
1696 * @param pdev PCI device structure
1697 */
1698static void liquidio_remove(struct pci_dev *pdev)
1699{
1700 struct octeon_device *oct_dev = pci_get_drvdata(pdev);
1701
1702 dev_dbg(&oct_dev->pci_dev->dev, "Stopping device\n");
1703
Raghu Vatsavayi9ff1a9b2016-09-01 11:16:09 -07001704 if (oct_dev->watchdog_task)
1705 kthread_stop(oct_dev->watchdog_task);
1706
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001707 if (oct_dev->app_mode && (oct_dev->app_mode == CVM_DRV_NIC_APP))
1708 liquidio_stop_nic_module(oct_dev);
1709
1710 /* Reset the octeon device and cleanup all memory allocated for
1711 * the octeon device by driver.
1712 */
1713 octeon_destroy_resources(oct_dev);
1714
1715 dev_info(&oct_dev->pci_dev->dev, "Device removed\n");
1716
1717 /* This octeon device has been removed. Update the global
1718 * data structure to reflect this. Free the device structure.
1719 */
1720 octeon_free_device_mem(oct_dev);
1721}
1722
1723/**
1724 * \brief Identify the Octeon device and to map the BAR address space
1725 * @param oct octeon device
1726 */
1727static int octeon_chip_specific_setup(struct octeon_device *oct)
1728{
1729 u32 dev_id, rev_id;
1730 int ret = 1;
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07001731 char *s;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001732
1733 pci_read_config_dword(oct->pci_dev, 0, &dev_id);
1734 pci_read_config_dword(oct->pci_dev, 8, &rev_id);
1735 oct->rev_id = rev_id & 0xff;
1736
1737 switch (dev_id) {
1738 case OCTEON_CN68XX_PCIID:
1739 oct->chip_id = OCTEON_CN68XX;
1740 ret = lio_setup_cn68xx_octeon_device(oct);
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07001741 s = "CN68XX";
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001742 break;
1743
1744 case OCTEON_CN66XX_PCIID:
1745 oct->chip_id = OCTEON_CN66XX;
1746 ret = lio_setup_cn66xx_octeon_device(oct);
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07001747 s = "CN66XX";
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001748 break;
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07001749
Raghu Vatsavayi72c00912016-08-31 11:03:25 -07001750 case OCTEON_CN23XX_PCIID_PF:
1751 oct->chip_id = OCTEON_CN23XX_PF_VID;
1752 ret = setup_cn23xx_octeon_pf_device(oct);
1753 s = "CN23XX";
1754 break;
1755
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001756 default:
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07001757 s = "?";
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001758 dev_err(&oct->pci_dev->dev, "Unknown device found (dev_id: %x)\n",
1759 dev_id);
1760 }
1761
1762 if (!ret)
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07001763 dev_info(&oct->pci_dev->dev, "%s PASS%d.%d %s Version: %s\n", s,
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001764 OCTEON_MAJOR_REV(oct),
1765 OCTEON_MINOR_REV(oct),
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07001766 octeon_get_conf(oct)->card_name,
1767 LIQUIDIO_VERSION);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001768
1769 return ret;
1770}
1771
1772/**
1773 * \brief PCI initialization for each Octeon device.
1774 * @param oct octeon device
1775 */
1776static int octeon_pci_os_setup(struct octeon_device *oct)
1777{
1778 /* setup PCI stuff first */
1779 if (pci_enable_device(oct->pci_dev)) {
1780 dev_err(&oct->pci_dev->dev, "pci_enable_device failed\n");
1781 return 1;
1782 }
1783
1784 if (dma_set_mask_and_coherent(&oct->pci_dev->dev, DMA_BIT_MASK(64))) {
1785 dev_err(&oct->pci_dev->dev, "Unexpected DMA device capability\n");
Raghu Vatsavayi515e7522016-11-14 15:54:44 -08001786 pci_disable_device(oct->pci_dev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001787 return 1;
1788 }
1789
1790 /* Enable PCI DMA Master. */
1791 pci_set_master(oct->pci_dev);
1792
1793 return 0;
1794}
1795
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07001796static inline int skb_iq(struct lio *lio, struct sk_buff *skb)
1797{
1798 int q = 0;
1799
1800 if (netif_is_multiqueue(lio->netdev))
1801 q = skb->queue_mapping % lio->linfo.num_txpciq;
1802
1803 return q;
1804}
1805
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001806/**
1807 * \brief Check Tx queue state for a given network buffer
1808 * @param lio per-network private data
1809 * @param skb network buffer
1810 */
1811static inline int check_txq_state(struct lio *lio, struct sk_buff *skb)
1812{
1813 int q = 0, iq = 0;
1814
1815 if (netif_is_multiqueue(lio->netdev)) {
1816 q = skb->queue_mapping;
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07001817 iq = lio->linfo.txpciq[(q % (lio->linfo.num_txpciq))].s.q_no;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001818 } else {
1819 iq = lio->txq;
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07001820 q = iq;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001821 }
1822
1823 if (octnet_iq_is_full(lio->oct_dev, iq))
1824 return 0;
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07001825
Raghu Vatsavayi1f164712016-06-21 22:53:11 -07001826 if (__netif_subqueue_stopped(lio->netdev, q)) {
1827 INCR_INSTRQUEUE_PKT_COUNT(lio->oct_dev, iq, tx_restart, 1);
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07001828 wake_q(lio->netdev, q);
Raghu Vatsavayi1f164712016-06-21 22:53:11 -07001829 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001830 return 1;
1831}
1832
1833/**
1834 * \brief Unmap and free network buffer
1835 * @param buf buffer
1836 */
1837static void free_netbuf(void *buf)
1838{
1839 struct sk_buff *skb;
1840 struct octnet_buf_free_info *finfo;
1841 struct lio *lio;
1842
1843 finfo = (struct octnet_buf_free_info *)buf;
1844 skb = finfo->skb;
1845 lio = finfo->lio;
1846
1847 dma_unmap_single(&lio->oct_dev->pci_dev->dev, finfo->dptr, skb->len,
1848 DMA_TO_DEVICE);
1849
1850 check_txq_state(lio, skb);
1851
Raghu Vatsavayicabeb132016-06-14 16:54:47 -07001852 tx_buffer_free(skb);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001853}
1854
1855/**
1856 * \brief Unmap and free gather buffer
1857 * @param buf buffer
1858 */
1859static void free_netsgbuf(void *buf)
1860{
1861 struct octnet_buf_free_info *finfo;
1862 struct sk_buff *skb;
1863 struct lio *lio;
1864 struct octnic_gather *g;
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07001865 int i, frags, iq;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001866
1867 finfo = (struct octnet_buf_free_info *)buf;
1868 skb = finfo->skb;
1869 lio = finfo->lio;
1870 g = finfo->g;
1871 frags = skb_shinfo(skb)->nr_frags;
1872
1873 dma_unmap_single(&lio->oct_dev->pci_dev->dev,
1874 g->sg[0].ptr[0], (skb->len - skb->data_len),
1875 DMA_TO_DEVICE);
1876
1877 i = 1;
1878 while (frags--) {
1879 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1];
1880
1881 pci_unmap_page((lio->oct_dev)->pci_dev,
1882 g->sg[(i >> 2)].ptr[(i & 3)],
1883 frag->size, DMA_TO_DEVICE);
1884 i++;
1885 }
1886
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07001887 dma_sync_single_for_cpu(&lio->oct_dev->pci_dev->dev,
1888 g->sg_dma_ptr, g->sg_size, DMA_TO_DEVICE);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001889
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07001890 iq = skb_iq(lio, skb);
1891 spin_lock(&lio->glist_lock[iq]);
1892 list_add_tail(&g->list, &lio->glist[iq]);
1893 spin_unlock(&lio->glist_lock[iq]);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001894
1895 check_txq_state(lio, skb); /* mq support: sub-queue state check */
1896
Raghu Vatsavayicabeb132016-06-14 16:54:47 -07001897 tx_buffer_free(skb);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001898}
1899
1900/**
1901 * \brief Unmap and free gather buffer with response
1902 * @param buf buffer
1903 */
1904static void free_netsgbuf_with_resp(void *buf)
1905{
1906 struct octeon_soft_command *sc;
1907 struct octnet_buf_free_info *finfo;
1908 struct sk_buff *skb;
1909 struct lio *lio;
1910 struct octnic_gather *g;
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07001911 int i, frags, iq;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001912
1913 sc = (struct octeon_soft_command *)buf;
1914 skb = (struct sk_buff *)sc->callback_arg;
1915 finfo = (struct octnet_buf_free_info *)&skb->cb;
1916
1917 lio = finfo->lio;
1918 g = finfo->g;
1919 frags = skb_shinfo(skb)->nr_frags;
1920
1921 dma_unmap_single(&lio->oct_dev->pci_dev->dev,
1922 g->sg[0].ptr[0], (skb->len - skb->data_len),
1923 DMA_TO_DEVICE);
1924
1925 i = 1;
1926 while (frags--) {
1927 struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1];
1928
1929 pci_unmap_page((lio->oct_dev)->pci_dev,
1930 g->sg[(i >> 2)].ptr[(i & 3)],
1931 frag->size, DMA_TO_DEVICE);
1932 i++;
1933 }
1934
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07001935 dma_sync_single_for_cpu(&lio->oct_dev->pci_dev->dev,
1936 g->sg_dma_ptr, g->sg_size, DMA_TO_DEVICE);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001937
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07001938 iq = skb_iq(lio, skb);
1939
1940 spin_lock(&lio->glist_lock[iq]);
1941 list_add_tail(&g->list, &lio->glist[iq]);
1942 spin_unlock(&lio->glist_lock[iq]);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07001943
1944 /* Don't free the skb yet */
1945
1946 check_txq_state(lio, skb);
1947}
1948
1949/**
1950 * \brief Adjust ptp frequency
1951 * @param ptp PTP clock info
1952 * @param ppb how much to adjust by, in parts-per-billion
1953 */
1954static int liquidio_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb)
1955{
1956 struct lio *lio = container_of(ptp, struct lio, ptp_info);
1957 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
1958 u64 comp, delta;
1959 unsigned long flags;
1960 bool neg_adj = false;
1961
1962 if (ppb < 0) {
1963 neg_adj = true;
1964 ppb = -ppb;
1965 }
1966
1967 /* The hardware adds the clock compensation value to the
1968 * PTP clock on every coprocessor clock cycle, so we
1969 * compute the delta in terms of coprocessor clocks.
1970 */
1971 delta = (u64)ppb << 32;
1972 do_div(delta, oct->coproc_clock_rate);
1973
1974 spin_lock_irqsave(&lio->ptp_lock, flags);
1975 comp = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_COMP);
1976 if (neg_adj)
1977 comp -= delta;
1978 else
1979 comp += delta;
1980 lio_pci_writeq(oct, comp, CN6XXX_MIO_PTP_CLOCK_COMP);
1981 spin_unlock_irqrestore(&lio->ptp_lock, flags);
1982
1983 return 0;
1984}
1985
1986/**
1987 * \brief Adjust ptp time
1988 * @param ptp PTP clock info
1989 * @param delta how much to adjust by, in nanosecs
1990 */
1991static int liquidio_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta)
1992{
1993 unsigned long flags;
1994 struct lio *lio = container_of(ptp, struct lio, ptp_info);
1995
1996 spin_lock_irqsave(&lio->ptp_lock, flags);
1997 lio->ptp_adjust += delta;
1998 spin_unlock_irqrestore(&lio->ptp_lock, flags);
1999
2000 return 0;
2001}
2002
2003/**
2004 * \brief Get hardware clock time, including any adjustment
2005 * @param ptp PTP clock info
2006 * @param ts timespec
2007 */
2008static int liquidio_ptp_gettime(struct ptp_clock_info *ptp,
2009 struct timespec64 *ts)
2010{
2011 u64 ns;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002012 unsigned long flags;
2013 struct lio *lio = container_of(ptp, struct lio, ptp_info);
2014 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
2015
2016 spin_lock_irqsave(&lio->ptp_lock, flags);
2017 ns = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_HI);
2018 ns += lio->ptp_adjust;
2019 spin_unlock_irqrestore(&lio->ptp_lock, flags);
2020
Kefeng Wang286af312016-01-27 17:34:37 +08002021 *ts = ns_to_timespec64(ns);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002022
2023 return 0;
2024}
2025
2026/**
2027 * \brief Set hardware clock time. Reset adjustment
2028 * @param ptp PTP clock info
2029 * @param ts timespec
2030 */
2031static int liquidio_ptp_settime(struct ptp_clock_info *ptp,
2032 const struct timespec64 *ts)
2033{
2034 u64 ns;
2035 unsigned long flags;
2036 struct lio *lio = container_of(ptp, struct lio, ptp_info);
2037 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
2038
2039 ns = timespec_to_ns(ts);
2040
2041 spin_lock_irqsave(&lio->ptp_lock, flags);
2042 lio_pci_writeq(oct, ns, CN6XXX_MIO_PTP_CLOCK_HI);
2043 lio->ptp_adjust = 0;
2044 spin_unlock_irqrestore(&lio->ptp_lock, flags);
2045
2046 return 0;
2047}
2048
2049/**
2050 * \brief Check if PTP is enabled
2051 * @param ptp PTP clock info
2052 * @param rq request
2053 * @param on is it on
2054 */
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -07002055static int
2056liquidio_ptp_enable(struct ptp_clock_info *ptp __attribute__((unused)),
2057 struct ptp_clock_request *rq __attribute__((unused)),
2058 int on __attribute__((unused)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002059{
2060 return -EOPNOTSUPP;
2061}
2062
2063/**
2064 * \brief Open PTP clock source
2065 * @param netdev network device
2066 */
2067static void oct_ptp_open(struct net_device *netdev)
2068{
2069 struct lio *lio = GET_LIO(netdev);
2070 struct octeon_device *oct = (struct octeon_device *)lio->oct_dev;
2071
2072 spin_lock_init(&lio->ptp_lock);
2073
2074 snprintf(lio->ptp_info.name, 16, "%s", netdev->name);
2075 lio->ptp_info.owner = THIS_MODULE;
2076 lio->ptp_info.max_adj = 250000000;
2077 lio->ptp_info.n_alarm = 0;
2078 lio->ptp_info.n_ext_ts = 0;
2079 lio->ptp_info.n_per_out = 0;
2080 lio->ptp_info.pps = 0;
2081 lio->ptp_info.adjfreq = liquidio_ptp_adjfreq;
2082 lio->ptp_info.adjtime = liquidio_ptp_adjtime;
2083 lio->ptp_info.gettime64 = liquidio_ptp_gettime;
2084 lio->ptp_info.settime64 = liquidio_ptp_settime;
2085 lio->ptp_info.enable = liquidio_ptp_enable;
2086
2087 lio->ptp_adjust = 0;
2088
2089 lio->ptp_clock = ptp_clock_register(&lio->ptp_info,
2090 &oct->pci_dev->dev);
2091
2092 if (IS_ERR(lio->ptp_clock))
2093 lio->ptp_clock = NULL;
2094}
2095
2096/**
2097 * \brief Init PTP clock
2098 * @param oct octeon device
2099 */
2100static void liquidio_ptp_init(struct octeon_device *oct)
2101{
2102 u64 clock_comp, cfg;
2103
2104 clock_comp = (u64)NSEC_PER_SEC << 32;
2105 do_div(clock_comp, oct->coproc_clock_rate);
2106 lio_pci_writeq(oct, clock_comp, CN6XXX_MIO_PTP_CLOCK_COMP);
2107
2108 /* Enable */
2109 cfg = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_CFG);
2110 lio_pci_writeq(oct, cfg | 0x01, CN6XXX_MIO_PTP_CLOCK_CFG);
2111}
2112
2113/**
2114 * \brief Load firmware to device
2115 * @param oct octeon device
2116 *
2117 * Maps device to firmware filename, requests firmware, and downloads it
2118 */
2119static int load_firmware(struct octeon_device *oct)
2120{
2121 int ret = 0;
2122 const struct firmware *fw;
2123 char fw_name[LIO_MAX_FW_FILENAME_LEN];
2124 char *tmp_fw_type;
2125
2126 if (strncmp(fw_type, LIO_FW_NAME_TYPE_NONE,
2127 sizeof(LIO_FW_NAME_TYPE_NONE)) == 0) {
2128 dev_info(&oct->pci_dev->dev, "Skipping firmware load\n");
2129 return ret;
2130 }
2131
2132 if (fw_type[0] == '\0')
2133 tmp_fw_type = LIO_FW_NAME_TYPE_NIC;
2134 else
2135 tmp_fw_type = fw_type;
2136
2137 sprintf(fw_name, "%s%s%s_%s%s", LIO_FW_DIR, LIO_FW_BASE_NAME,
2138 octeon_get_conf(oct)->card_name, tmp_fw_type,
2139 LIO_FW_NAME_SUFFIX);
2140
2141 ret = request_firmware(&fw, fw_name, &oct->pci_dev->dev);
2142 if (ret) {
2143 dev_err(&oct->pci_dev->dev, "Request firmware failed. Could not find file %s.\n.",
2144 fw_name);
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07002145 release_firmware(fw);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002146 return ret;
2147 }
2148
2149 ret = octeon_download_firmware(oct, fw->data, fw->size);
2150
2151 release_firmware(fw);
2152
2153 return ret;
2154}
2155
2156/**
2157 * \brief Setup output queue
2158 * @param oct octeon device
2159 * @param q_no which queue
2160 * @param num_descs how many descriptors
2161 * @param desc_size size of each descriptor
2162 * @param app_ctx application context
2163 */
2164static int octeon_setup_droq(struct octeon_device *oct, int q_no, int num_descs,
2165 int desc_size, void *app_ctx)
2166{
2167 int ret_val = 0;
2168
2169 dev_dbg(&oct->pci_dev->dev, "Creating Droq: %d\n", q_no);
2170 /* droq creation and local register settings. */
2171 ret_val = octeon_create_droq(oct, q_no, num_descs, desc_size, app_ctx);
Amitoj Kaur Chawla08a965e2016-02-04 19:25:13 +05302172 if (ret_val < 0)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002173 return ret_val;
2174
2175 if (ret_val == 1) {
2176 dev_dbg(&oct->pci_dev->dev, "Using default droq %d\n", q_no);
2177 return 0;
2178 }
2179 /* tasklet creation for the droq */
2180
2181 /* Enable the droq queues */
2182 octeon_set_droq_pkt_op(oct, q_no, 1);
2183
2184 /* Send Credit for Octeon Output queues. Credits are always
2185 * sent after the output queue is enabled.
2186 */
2187 writel(oct->droq[q_no]->max_count,
2188 oct->droq[q_no]->pkts_credit_reg);
2189
2190 return ret_val;
2191}
2192
2193/**
2194 * \brief Callback for getting interface configuration
2195 * @param status status of request
2196 * @param buf pointer to resp structure
2197 */
2198static void if_cfg_callback(struct octeon_device *oct,
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -07002199 u32 status __attribute__((unused)),
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002200 void *buf)
2201{
2202 struct octeon_soft_command *sc = (struct octeon_soft_command *)buf;
2203 struct liquidio_if_cfg_resp *resp;
2204 struct liquidio_if_cfg_context *ctx;
2205
2206 resp = (struct liquidio_if_cfg_resp *)sc->virtrptr;
Raghu Vatsavayi30136392016-09-01 11:16:11 -07002207 ctx = (struct liquidio_if_cfg_context *)sc->ctxptr;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002208
2209 oct = lio_get_device(ctx->octeon_id);
2210 if (resp->status)
2211 dev_err(&oct->pci_dev->dev, "nic if cfg instruction failed. Status: %llx\n",
2212 CVM_CAST64(resp->status));
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -07002213 WRITE_ONCE(ctx->cond, 1);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002214
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07002215 snprintf(oct->fw_info.liquidio_firmware_version, 32, "%s",
2216 resp->cfg_info.liquidio_firmware_version);
2217
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002218 /* This barrier is required to be sure that the response has been
2219 * written fully before waking up the handler
2220 */
2221 wmb();
2222
2223 wake_up_interruptible(&ctx->wc);
2224}
2225
2226/**
2227 * \brief Select queue based on hash
2228 * @param dev Net device
2229 * @param skb sk_buff structure
2230 * @returns selected queue number
2231 */
2232static u16 select_q(struct net_device *dev, struct sk_buff *skb,
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -07002233 void *accel_priv __attribute__((unused)),
2234 select_queue_fallback_t fallback __attribute__((unused)))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002235{
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07002236 u32 qindex = 0;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002237 struct lio *lio;
2238
2239 lio = GET_LIO(dev);
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07002240 qindex = skb_tx_hash(dev, skb);
2241
2242 return (u16)(qindex % (lio->linfo.num_txpciq));
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002243}
2244
2245/** Routine to push packets arriving on Octeon interface upto network layer.
2246 * @param oct_id - octeon device id.
2247 * @param skbuff - skbuff struct to be passed to network layer.
2248 * @param len - size of total data received.
2249 * @param rh - Control header associated with the packet
2250 * @param param - additional control data with the packet
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002251 * @param arg - farg registered in droq_ops
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002252 */
2253static void
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -07002254liquidio_push_packet(u32 octeon_id __attribute__((unused)),
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002255 void *skbuff,
2256 u32 len,
2257 union octeon_rh *rh,
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002258 void *param,
2259 void *arg)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002260{
2261 struct napi_struct *napi = param;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002262 struct sk_buff *skb = (struct sk_buff *)skbuff;
2263 struct skb_shared_hwtstamps *shhwtstamps;
2264 u64 ns;
Raghu Vatsavayi0da0b772016-06-21 22:53:04 -07002265 u16 vtag = 0;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002266 struct net_device *netdev = (struct net_device *)arg;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002267 struct octeon_droq *droq = container_of(param, struct octeon_droq,
2268 napi);
2269 if (netdev) {
2270 int packet_was_received;
2271 struct lio *lio = GET_LIO(netdev);
Raghu Vatsavayia5b37882016-06-14 16:54:48 -07002272 struct octeon_device *oct = lio->oct_dev;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002273
2274 /* Do not proceed if the interface is not in RUNNING state. */
2275 if (!ifstate_check(lio, LIO_IFSTATE_RUNNING)) {
2276 recv_buffer_free(skb);
2277 droq->stats.rx_dropped++;
2278 return;
2279 }
2280
2281 skb->dev = netdev;
2282
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07002283 skb_record_rx_queue(skb, droq->q_no);
Raghu Vatsavayicabeb132016-06-14 16:54:47 -07002284 if (likely(len > MIN_SKB_SIZE)) {
2285 struct octeon_skb_page_info *pg_info;
2286 unsigned char *va;
2287
2288 pg_info = ((struct octeon_skb_page_info *)(skb->cb));
2289 if (pg_info->page) {
2290 /* For Paged allocation use the frags */
2291 va = page_address(pg_info->page) +
2292 pg_info->page_offset;
2293 memcpy(skb->data, va, MIN_SKB_SIZE);
2294 skb_put(skb, MIN_SKB_SIZE);
2295 skb_add_rx_frag(skb, skb_shinfo(skb)->nr_frags,
2296 pg_info->page,
2297 pg_info->page_offset +
2298 MIN_SKB_SIZE,
2299 len - MIN_SKB_SIZE,
2300 LIO_RXBUFFER_SZ);
2301 }
2302 } else {
2303 struct octeon_skb_page_info *pg_info =
2304 ((struct octeon_skb_page_info *)(skb->cb));
2305 skb_copy_to_linear_data(skb, page_address(pg_info->page)
2306 + pg_info->page_offset, len);
2307 skb_put(skb, len);
2308 put_page(pg_info->page);
2309 }
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07002310
Raghu Vatsavayia5b37882016-06-14 16:54:48 -07002311 if (((oct->chip_id == OCTEON_CN66XX) ||
2312 (oct->chip_id == OCTEON_CN68XX)) &&
2313 ptp_enable) {
2314 if (rh->r_dh.has_hwtstamp) {
2315 /* timestamp is included from the hardware at
2316 * the beginning of the packet.
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002317 */
Raghu Vatsavayia5b37882016-06-14 16:54:48 -07002318 if (ifstate_check
2319 (lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED)) {
2320 /* Nanoseconds are in the first 64-bits
2321 * of the packet.
2322 */
2323 memcpy(&ns, (skb->data), sizeof(ns));
2324 shhwtstamps = skb_hwtstamps(skb);
2325 shhwtstamps->hwtstamp =
2326 ns_to_ktime(ns +
2327 lio->ptp_adjust);
2328 }
2329 skb_pull(skb, sizeof(ns));
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002330 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002331 }
2332
2333 skb->protocol = eth_type_trans(skb, skb->dev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002334 if ((netdev->features & NETIF_F_RXCSUM) &&
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -07002335 (((rh->r_dh.encap_on) &&
2336 (rh->r_dh.csum_verified & CNNIC_TUN_CSUM_VERIFIED)) ||
2337 (!(rh->r_dh.encap_on) &&
2338 (rh->r_dh.csum_verified & CNNIC_CSUM_VERIFIED))))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002339 /* checksum has already been verified */
2340 skb->ip_summed = CHECKSUM_UNNECESSARY;
2341 else
2342 skb->ip_summed = CHECKSUM_NONE;
2343
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -07002344 /* Setting Encapsulation field on basis of status received
2345 * from the firmware
2346 */
2347 if (rh->r_dh.encap_on) {
2348 skb->encapsulation = 1;
2349 skb->csum_level = 1;
2350 droq->stats.rx_vxlan++;
2351 }
2352
Raghu Vatsavayi0da0b772016-06-21 22:53:04 -07002353 /* inbound VLAN tag */
2354 if ((netdev->features & NETIF_F_HW_VLAN_CTAG_RX) &&
2355 (rh->r_dh.vlan != 0)) {
2356 u16 vid = rh->r_dh.vlan;
2357 u16 priority = rh->r_dh.priority;
2358
2359 vtag = priority << 13 | vid;
2360 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vtag);
2361 }
2362
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002363 packet_was_received = napi_gro_receive(napi, skb) != GRO_DROP;
2364
2365 if (packet_was_received) {
2366 droq->stats.rx_bytes_received += len;
2367 droq->stats.rx_pkts_received++;
2368 netdev->last_rx = jiffies;
2369 } else {
2370 droq->stats.rx_dropped++;
2371 netif_info(lio, rx_err, lio->netdev,
2372 "droq:%d error rx_dropped:%llu\n",
2373 droq->q_no, droq->stats.rx_dropped);
2374 }
2375
2376 } else {
2377 recv_buffer_free(skb);
2378 }
2379}
2380
2381/**
2382 * \brief wrapper for calling napi_schedule
2383 * @param param parameters to pass to napi_schedule
2384 *
2385 * Used when scheduling on different CPUs
2386 */
2387static void napi_schedule_wrapper(void *param)
2388{
2389 struct napi_struct *napi = param;
2390
2391 napi_schedule(napi);
2392}
2393
2394/**
2395 * \brief callback when receive interrupt occurs and we are in NAPI mode
2396 * @param arg pointer to octeon output queue
2397 */
2398static void liquidio_napi_drv_callback(void *arg)
2399{
Raghu Vatsavayi9ded1a52016-09-01 11:16:10 -07002400 struct octeon_device *oct;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002401 struct octeon_droq *droq = arg;
2402 int this_cpu = smp_processor_id();
2403
Raghu Vatsavayi9ded1a52016-09-01 11:16:10 -07002404 oct = droq->oct_dev;
2405
2406 if (OCTEON_CN23XX_PF(oct) || droq->cpu_id == this_cpu) {
2407 napi_schedule_irqoff(&droq->napi);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002408 } else {
2409 struct call_single_data *csd = &droq->csd;
2410
2411 csd->func = napi_schedule_wrapper;
2412 csd->info = &droq->napi;
2413 csd->flags = 0;
2414
2415 smp_call_function_single_async(droq->cpu_id, csd);
2416 }
2417}
2418
2419/**
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002420 * \brief Entry point for NAPI polling
2421 * @param napi NAPI structure
2422 * @param budget maximum number of items to process
2423 */
2424static int liquidio_napi_poll(struct napi_struct *napi, int budget)
2425{
2426 struct octeon_droq *droq;
2427 int work_done;
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002428 int tx_done = 0, iq_no;
2429 struct octeon_instr_queue *iq;
2430 struct octeon_device *oct;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002431
2432 droq = container_of(napi, struct octeon_droq, napi);
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002433 oct = droq->oct_dev;
2434 iq_no = droq->q_no;
2435 /* Handle Droq descriptors */
2436 work_done = octeon_process_droq_poll_cmd(oct, droq->q_no,
2437 POLL_EVENT_PROCESS_PKTS,
2438 budget);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002439
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002440 /* Flush the instruction queue */
2441 iq = oct->instr_queue[iq_no];
2442 if (iq) {
2443 /* Process iq buffers with in the budget limits */
Derek Chickles60889862017-01-06 17:16:12 -08002444 tx_done = octeon_flush_iq(oct, iq, budget);
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002445 /* Update iq read-index rather than waiting for next interrupt.
2446 * Return back if tx_done is false.
2447 */
2448 update_txq_status(oct, iq_no);
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002449 } else {
2450 dev_err(&oct->pci_dev->dev, "%s: iq (%d) num invalid\n",
2451 __func__, iq_no);
2452 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002453
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002454 if ((work_done < budget) && (tx_done)) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002455 napi_complete(napi);
2456 octeon_process_droq_poll_cmd(droq->oct_dev, droq->q_no,
2457 POLL_EVENT_ENABLE_INTR, 0);
2458 return 0;
2459 }
2460
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002461 return (!tx_done) ? (budget) : (work_done);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002462}
2463
2464/**
2465 * \brief Setup input and output queues
2466 * @param octeon_dev octeon device
Raghu Vatsavayia2c64b62016-07-03 13:56:55 -07002467 * @param ifidx Interface Index
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002468 *
2469 * Note: Queues are with respect to the octeon device. Thus
2470 * an input queue is for egress packets, and output queues
2471 * are for ingress packets.
2472 */
2473static inline int setup_io_queues(struct octeon_device *octeon_dev,
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002474 int ifidx)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002475{
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002476 struct octeon_droq_ops droq_ops;
2477 struct net_device *netdev;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002478 static int cpu_id;
2479 static int cpu_id_modulus;
2480 struct octeon_droq *droq;
2481 struct napi_struct *napi;
2482 int q, q_no, retval = 0;
2483 struct lio *lio;
2484 int num_tx_descs;
2485
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002486 netdev = octeon_dev->props[ifidx].netdev;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002487
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002488 lio = GET_LIO(netdev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002489
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002490 memset(&droq_ops, 0, sizeof(struct octeon_droq_ops));
2491
2492 droq_ops.fptr = liquidio_push_packet;
2493 droq_ops.farg = (void *)netdev;
2494
2495 droq_ops.poll_mode = 1;
2496 droq_ops.napi_fn = liquidio_napi_drv_callback;
2497 cpu_id = 0;
2498 cpu_id_modulus = num_present_cpus();
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002499
2500 /* set up DROQs. */
2501 for (q = 0; q < lio->linfo.num_rxpciq; q++) {
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07002502 q_no = lio->linfo.rxpciq[q].s.q_no;
2503 dev_dbg(&octeon_dev->pci_dev->dev,
2504 "setup_io_queues index:%d linfo.rxpciq.s.q_no:%d\n",
2505 q, q_no);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002506 retval = octeon_setup_droq(octeon_dev, q_no,
2507 CFG_GET_NUM_RX_DESCS_NIC_IF
2508 (octeon_get_conf(octeon_dev),
2509 lio->ifidx),
2510 CFG_GET_NUM_RX_BUF_SIZE_NIC_IF
2511 (octeon_get_conf(octeon_dev),
2512 lio->ifidx), NULL);
2513 if (retval) {
2514 dev_err(&octeon_dev->pci_dev->dev,
Raghu Vatsavayi32581242016-08-31 11:03:20 -07002515 "%s : Runtime DROQ(RxQ) creation failed.\n",
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002516 __func__);
2517 return 1;
2518 }
2519
2520 droq = octeon_dev->droq[q_no];
2521 napi = &droq->napi;
Raghu Vatsavayi1b7c55c2016-08-31 11:03:27 -07002522 dev_dbg(&octeon_dev->pci_dev->dev, "netif_napi_add netdev:%llx oct:%llx pf_num:%d\n",
2523 (u64)netdev, (u64)octeon_dev, octeon_dev->pf_num);
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002524 netif_napi_add(netdev, napi, liquidio_napi_poll, 64);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002525
2526 /* designate a CPU for this droq */
2527 droq->cpu_id = cpu_id;
2528 cpu_id++;
2529 if (cpu_id >= cpu_id_modulus)
2530 cpu_id = 0;
2531
2532 octeon_register_droq_ops(octeon_dev, q_no, &droq_ops);
2533 }
2534
Raghu Vatsavayi7b6b6c92016-09-01 11:16:04 -07002535 if (OCTEON_CN23XX_PF(octeon_dev)) {
2536 /* 23XX PF can receive control messages (via the first PF-owned
2537 * droq) from the firmware even if the ethX interface is down,
2538 * so that's why poll_mode must be off for the first droq.
2539 */
2540 octeon_dev->droq[0]->ops.poll_mode = 0;
2541 }
2542
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002543 /* set up IQs. */
2544 for (q = 0; q < lio->linfo.num_txpciq; q++) {
2545 num_tx_descs = CFG_GET_NUM_TX_DESCS_NIC_IF(octeon_get_conf
2546 (octeon_dev),
2547 lio->ifidx);
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002548 retval = octeon_setup_iq(octeon_dev, ifidx, q,
2549 lio->linfo.txpciq[q], num_tx_descs,
2550 netdev_get_tx_queue(netdev, q));
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002551 if (retval) {
2552 dev_err(&octeon_dev->pci_dev->dev,
2553 " %s : Runtime IQ(TxQ) creation failed.\n",
2554 __func__);
2555 return 1;
2556 }
2557 }
2558
2559 return 0;
2560}
2561
2562/**
2563 * \brief Poll routine for checking transmit queue status
2564 * @param work work_struct data structure
2565 */
2566static void octnet_poll_check_txq_status(struct work_struct *work)
2567{
2568 struct cavium_wk *wk = (struct cavium_wk *)work;
2569 struct lio *lio = (struct lio *)wk->ctxptr;
2570
2571 if (!ifstate_check(lio, LIO_IFSTATE_RUNNING))
2572 return;
2573
2574 check_txq_status(lio);
2575 queue_delayed_work(lio->txq_status_wq.wq,
2576 &lio->txq_status_wq.wk.work, msecs_to_jiffies(1));
2577}
2578
2579/**
2580 * \brief Sets up the txq poll check
2581 * @param netdev network device
2582 */
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07002583static inline int setup_tx_poll_fn(struct net_device *netdev)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002584{
2585 struct lio *lio = GET_LIO(netdev);
2586 struct octeon_device *oct = lio->oct_dev;
2587
Bhaktipriya Shridhar292b9da2016-06-08 01:47:59 +05302588 lio->txq_status_wq.wq = alloc_workqueue("txq-status",
2589 WQ_MEM_RECLAIM, 0);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002590 if (!lio->txq_status_wq.wq) {
2591 dev_err(&oct->pci_dev->dev, "unable to create cavium txq status wq\n");
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07002592 return -1;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002593 }
2594 INIT_DELAYED_WORK(&lio->txq_status_wq.wk.work,
2595 octnet_poll_check_txq_status);
2596 lio->txq_status_wq.wk.ctxptr = lio;
2597 queue_delayed_work(lio->txq_status_wq.wq,
2598 &lio->txq_status_wq.wk.work, msecs_to_jiffies(1));
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07002599 return 0;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002600}
2601
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002602static inline void cleanup_tx_poll_fn(struct net_device *netdev)
2603{
2604 struct lio *lio = GET_LIO(netdev);
2605
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07002606 if (lio->txq_status_wq.wq) {
2607 cancel_delayed_work_sync(&lio->txq_status_wq.wk.work);
2608 destroy_workqueue(lio->txq_status_wq.wq);
2609 }
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002610}
2611
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002612/**
2613 * \brief Net device open for LiquidIO
2614 * @param netdev network device
2615 */
2616static int liquidio_open(struct net_device *netdev)
2617{
2618 struct lio *lio = GET_LIO(netdev);
2619 struct octeon_device *oct = lio->oct_dev;
2620 struct napi_struct *napi, *n;
2621
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002622 if (oct->props[lio->ifidx].napi_enabled == 0) {
2623 list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list)
2624 napi_enable(napi);
2625
2626 oct->props[lio->ifidx].napi_enabled = 1;
Raghu Vatsavayi7b6b6c92016-09-01 11:16:04 -07002627
2628 if (OCTEON_CN23XX_PF(oct))
2629 oct->droq[0]->ops.poll_mode = 1;
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002630 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002631
Prasad Kanneganti9feb16a2017-01-03 11:27:33 -08002632 if ((oct->chip_id == OCTEON_CN66XX || oct->chip_id == OCTEON_CN68XX) &&
2633 ptp_enable)
2634 oct_ptp_open(netdev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002635
2636 ifstate_set(lio, LIO_IFSTATE_RUNNING);
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002637
Raghu Vatsavayi7b6b6c92016-09-01 11:16:04 -07002638 /* Ready for link status updates */
2639 lio->intf_open = 1;
2640
2641 netif_info(lio, ifup, lio->netdev, "Interface Open, ready for traffic\n");
2642
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07002643 if (OCTEON_CN23XX_PF(oct)) {
2644 if (!oct->msix_on)
2645 if (setup_tx_poll_fn(netdev))
2646 return -1;
2647 } else {
2648 if (setup_tx_poll_fn(netdev))
2649 return -1;
2650 }
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002651
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002652 start_txq(netdev);
2653
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002654 /* tell Octeon to start forwarding packets to host */
2655 send_rx_ctrl_cmd(lio, 1);
2656
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002657 dev_info(&oct->pci_dev->dev, "%s interface is opened\n",
2658 netdev->name);
2659
2660 return 0;
2661}
2662
2663/**
2664 * \brief Net device stop for LiquidIO
2665 * @param netdev network device
2666 */
2667static int liquidio_stop(struct net_device *netdev)
2668{
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002669 struct lio *lio = GET_LIO(netdev);
2670 struct octeon_device *oct = lio->oct_dev;
2671
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002672 ifstate_reset(lio, LIO_IFSTATE_RUNNING);
2673
2674 netif_tx_disable(netdev);
2675
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002676 /* Inform that netif carrier is down */
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002677 netif_carrier_off(netdev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002678 lio->intf_open = 0;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002679 lio->linfo.link.s.link_up = 0;
2680 lio->link_changes++;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002681
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002682 /* Pause for a moment and wait for Octeon to flush out (to the wire) any
2683 * egress packets that are in-flight.
2684 */
2685 set_current_state(TASK_INTERRUPTIBLE);
2686 schedule_timeout(msecs_to_jiffies(100));
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002687
Raghu Vatsavayi9a96bde2016-06-21 22:53:06 -07002688 /* Now it should be safe to tell Octeon that nic interface is down. */
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002689 send_rx_ctrl_cmd(lio, 0);
2690
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07002691 if (OCTEON_CN23XX_PF(oct)) {
2692 if (!oct->msix_on)
2693 cleanup_tx_poll_fn(netdev);
2694 } else {
2695 cleanup_tx_poll_fn(netdev);
2696 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002697
2698 if (lio->ptp_clock) {
2699 ptp_clock_unregister(lio->ptp_clock);
2700 lio->ptp_clock = NULL;
2701 }
2702
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002703 dev_info(&oct->pci_dev->dev, "%s interface is stopped\n", netdev->name);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002704
2705 return 0;
2706}
2707
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002708/**
2709 * \brief Converts a mask based on net device flags
2710 * @param netdev network device
2711 *
2712 * This routine generates a octnet_ifflags mask from the net device flags
2713 * received from the OS.
2714 */
2715static inline enum octnet_ifflags get_new_flags(struct net_device *netdev)
2716{
2717 enum octnet_ifflags f = OCTNET_IFFLAG_UNICAST;
2718
2719 if (netdev->flags & IFF_PROMISC)
2720 f |= OCTNET_IFFLAG_PROMISC;
2721
2722 if (netdev->flags & IFF_ALLMULTI)
2723 f |= OCTNET_IFFLAG_ALLMULTI;
2724
2725 if (netdev->flags & IFF_MULTICAST) {
2726 f |= OCTNET_IFFLAG_MULTICAST;
2727
2728 /* Accept all multicast addresses if there are more than we
2729 * can handle
2730 */
2731 if (netdev_mc_count(netdev) > MAX_OCTEON_MULTICAST_ADDR)
2732 f |= OCTNET_IFFLAG_ALLMULTI;
2733 }
2734
2735 if (netdev->flags & IFF_BROADCAST)
2736 f |= OCTNET_IFFLAG_BROADCAST;
2737
2738 return f;
2739}
2740
2741/**
2742 * \brief Net device set_multicast_list
2743 * @param netdev network device
2744 */
2745static void liquidio_set_mcast_list(struct net_device *netdev)
2746{
2747 struct lio *lio = GET_LIO(netdev);
2748 struct octeon_device *oct = lio->oct_dev;
2749 struct octnic_ctrl_pkt nctrl;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002750 struct netdev_hw_addr *ha;
2751 u64 *mc;
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -07002752 int ret;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002753 int mc_count = min(netdev_mc_count(netdev), MAX_OCTEON_MULTICAST_ADDR);
2754
2755 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2756
2757 /* Create a ctrl pkt command to be sent to core app. */
2758 nctrl.ncmd.u64 = 0;
2759 nctrl.ncmd.s.cmd = OCTNET_CMD_SET_MULTI_LIST;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002760 nctrl.ncmd.s.param1 = get_new_flags(netdev);
2761 nctrl.ncmd.s.param2 = mc_count;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002762 nctrl.ncmd.s.more = mc_count;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002763 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002764 nctrl.netpndev = (u64)netdev;
2765 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
2766
2767 /* copy all the addresses into the udd */
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002768 mc = &nctrl.udd[0];
2769 netdev_for_each_mc_addr(ha, netdev) {
2770 *mc = 0;
2771 memcpy(((u8 *)mc) + 2, ha->addr, ETH_ALEN);
2772 /* no need to swap bytes */
2773
2774 if (++mc > &nctrl.udd[mc_count])
2775 break;
2776 }
2777
2778 /* Apparently, any activity in this call from the kernel has to
2779 * be atomic. So we won't wait for response.
2780 */
2781 nctrl.wait_time = 0;
2782
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002783 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002784 if (ret < 0) {
2785 dev_err(&oct->pci_dev->dev, "DEVFLAGS change failed in core (ret: 0x%x)\n",
2786 ret);
2787 }
2788}
2789
2790/**
2791 * \brief Net device set_mac_address
2792 * @param netdev network device
2793 */
2794static int liquidio_set_mac(struct net_device *netdev, void *p)
2795{
2796 int ret = 0;
2797 struct lio *lio = GET_LIO(netdev);
2798 struct octeon_device *oct = lio->oct_dev;
2799 struct sockaddr *addr = (struct sockaddr *)p;
2800 struct octnic_ctrl_pkt nctrl;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002801
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002802 if (!is_valid_ether_addr(addr->sa_data))
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002803 return -EADDRNOTAVAIL;
2804
2805 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2806
2807 nctrl.ncmd.u64 = 0;
2808 nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002809 nctrl.ncmd.s.param1 = 0;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002810 nctrl.ncmd.s.more = 1;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002811 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002812 nctrl.netpndev = (u64)netdev;
2813 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
2814 nctrl.wait_time = 100;
2815
2816 nctrl.udd[0] = 0;
2817 /* The MAC Address is presented in network byte order. */
2818 memcpy((u8 *)&nctrl.udd[0] + 2, addr->sa_data, ETH_ALEN);
2819
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002820 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002821 if (ret < 0) {
2822 dev_err(&oct->pci_dev->dev, "MAC Address change failed\n");
2823 return -ENOMEM;
2824 }
2825 memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len);
2826 memcpy(((u8 *)&lio->linfo.hw_addr) + 2, addr->sa_data, ETH_ALEN);
2827
2828 return 0;
2829}
2830
2831/**
2832 * \brief Net device get_stats
2833 * @param netdev network device
2834 */
2835static struct net_device_stats *liquidio_get_stats(struct net_device *netdev)
2836{
2837 struct lio *lio = GET_LIO(netdev);
2838 struct net_device_stats *stats = &netdev->stats;
2839 struct octeon_device *oct;
2840 u64 pkts = 0, drop = 0, bytes = 0;
2841 struct oct_droq_stats *oq_stats;
2842 struct oct_iq_stats *iq_stats;
2843 int i, iq_no, oq_no;
2844
2845 oct = lio->oct_dev;
2846
2847 for (i = 0; i < lio->linfo.num_txpciq; i++) {
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07002848 iq_no = lio->linfo.txpciq[i].s.q_no;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002849 iq_stats = &oct->instr_queue[iq_no]->stats;
2850 pkts += iq_stats->tx_done;
2851 drop += iq_stats->tx_dropped;
2852 bytes += iq_stats->tx_tot_bytes;
2853 }
2854
2855 stats->tx_packets = pkts;
2856 stats->tx_bytes = bytes;
2857 stats->tx_dropped = drop;
2858
2859 pkts = 0;
2860 drop = 0;
2861 bytes = 0;
2862
2863 for (i = 0; i < lio->linfo.num_rxpciq; i++) {
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07002864 oq_no = lio->linfo.rxpciq[i].s.q_no;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002865 oq_stats = &oct->droq[oq_no]->stats;
2866 pkts += oq_stats->rx_pkts_received;
2867 drop += (oq_stats->rx_dropped +
2868 oq_stats->dropped_nodispatch +
2869 oq_stats->dropped_toomany +
2870 oq_stats->dropped_nomem);
2871 bytes += oq_stats->rx_bytes_received;
2872 }
2873
2874 stats->rx_bytes = bytes;
2875 stats->rx_packets = pkts;
2876 stats->rx_dropped = drop;
2877
2878 return stats;
2879}
2880
2881/**
2882 * \brief Net device change_mtu
2883 * @param netdev network device
2884 */
2885static int liquidio_change_mtu(struct net_device *netdev, int new_mtu)
2886{
2887 struct lio *lio = GET_LIO(netdev);
2888 struct octeon_device *oct = lio->oct_dev;
2889 struct octnic_ctrl_pkt nctrl;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002890 int ret = 0;
2891
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002892 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
2893
2894 nctrl.ncmd.u64 = 0;
2895 nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MTU;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002896 nctrl.ncmd.s.param1 = new_mtu;
2897 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002898 nctrl.wait_time = 100;
2899 nctrl.netpndev = (u64)netdev;
2900 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
2901
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07002902 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002903 if (ret < 0) {
2904 dev_err(&oct->pci_dev->dev, "Failed to set MTU\n");
2905 return -1;
2906 }
2907
2908 lio->mtu = new_mtu;
2909
2910 return 0;
2911}
2912
2913/**
2914 * \brief Handler for SIOCSHWTSTAMP ioctl
2915 * @param netdev network device
2916 * @param ifr interface request
2917 * @param cmd command
2918 */
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -07002919static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002920{
2921 struct hwtstamp_config conf;
2922 struct lio *lio = GET_LIO(netdev);
2923
2924 if (copy_from_user(&conf, ifr->ifr_data, sizeof(conf)))
2925 return -EFAULT;
2926
2927 if (conf.flags)
2928 return -EINVAL;
2929
2930 switch (conf.tx_type) {
2931 case HWTSTAMP_TX_ON:
2932 case HWTSTAMP_TX_OFF:
2933 break;
2934 default:
2935 return -ERANGE;
2936 }
2937
2938 switch (conf.rx_filter) {
2939 case HWTSTAMP_FILTER_NONE:
2940 break;
2941 case HWTSTAMP_FILTER_ALL:
2942 case HWTSTAMP_FILTER_SOME:
2943 case HWTSTAMP_FILTER_PTP_V1_L4_EVENT:
2944 case HWTSTAMP_FILTER_PTP_V1_L4_SYNC:
2945 case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ:
2946 case HWTSTAMP_FILTER_PTP_V2_L4_EVENT:
2947 case HWTSTAMP_FILTER_PTP_V2_L4_SYNC:
2948 case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ:
2949 case HWTSTAMP_FILTER_PTP_V2_L2_EVENT:
2950 case HWTSTAMP_FILTER_PTP_V2_L2_SYNC:
2951 case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ:
2952 case HWTSTAMP_FILTER_PTP_V2_EVENT:
2953 case HWTSTAMP_FILTER_PTP_V2_SYNC:
2954 case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ:
2955 conf.rx_filter = HWTSTAMP_FILTER_ALL;
2956 break;
2957 default:
2958 return -ERANGE;
2959 }
2960
2961 if (conf.rx_filter == HWTSTAMP_FILTER_ALL)
2962 ifstate_set(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
2963
2964 else
2965 ifstate_reset(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED);
2966
2967 return copy_to_user(ifr->ifr_data, &conf, sizeof(conf)) ? -EFAULT : 0;
2968}
2969
2970/**
2971 * \brief ioctl handler
2972 * @param netdev network device
2973 * @param ifr interface request
2974 * @param cmd command
2975 */
2976static int liquidio_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd)
2977{
Prasad Kanneganti9feb16a2017-01-03 11:27:33 -08002978 struct lio *lio = GET_LIO(netdev);
2979
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002980 switch (cmd) {
2981 case SIOCSHWTSTAMP:
Prasad Kanneganti9feb16a2017-01-03 11:27:33 -08002982 if ((lio->oct_dev->chip_id == OCTEON_CN66XX ||
2983 lio->oct_dev->chip_id == OCTEON_CN68XX) && ptp_enable)
2984 return hwtstamp_ioctl(netdev, ifr);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07002985 default:
2986 return -EOPNOTSUPP;
2987 }
2988}
2989
2990/**
2991 * \brief handle a Tx timestamp response
2992 * @param status response status
2993 * @param buf pointer to skb
2994 */
2995static void handle_timestamp(struct octeon_device *oct,
2996 u32 status,
2997 void *buf)
2998{
2999 struct octnet_buf_free_info *finfo;
3000 struct octeon_soft_command *sc;
3001 struct oct_timestamp_resp *resp;
3002 struct lio *lio;
3003 struct sk_buff *skb = (struct sk_buff *)buf;
3004
3005 finfo = (struct octnet_buf_free_info *)skb->cb;
3006 lio = finfo->lio;
3007 sc = finfo->sc;
3008 oct = lio->oct_dev;
3009 resp = (struct oct_timestamp_resp *)sc->virtrptr;
3010
3011 if (status != OCTEON_REQUEST_DONE) {
3012 dev_err(&oct->pci_dev->dev, "Tx timestamp instruction failed. Status: %llx\n",
3013 CVM_CAST64(status));
3014 resp->timestamp = 0;
3015 }
3016
3017 octeon_swap_8B_data(&resp->timestamp, 1);
3018
Colin Ian King19a6d152016-02-05 16:30:39 +00003019 if (unlikely((skb_shinfo(skb)->tx_flags & SKBTX_IN_PROGRESS) != 0)) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003020 struct skb_shared_hwtstamps ts;
3021 u64 ns = resp->timestamp;
3022
3023 netif_info(lio, tx_done, lio->netdev,
3024 "Got resulting SKBTX_HW_TSTAMP skb=%p ns=%016llu\n",
3025 skb, (unsigned long long)ns);
3026 ts.hwtstamp = ns_to_ktime(ns + lio->ptp_adjust);
3027 skb_tstamp_tx(skb, &ts);
3028 }
3029
3030 octeon_free_soft_command(oct, sc);
Raghu Vatsavayicabeb132016-06-14 16:54:47 -07003031 tx_buffer_free(skb);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003032}
3033
3034/* \brief Send a data packet that will be timestamped
3035 * @param oct octeon device
3036 * @param ndata pointer to network data
3037 * @param finfo pointer to private network data
3038 */
3039static inline int send_nic_timestamp_pkt(struct octeon_device *oct,
3040 struct octnic_data_pkt *ndata,
Raghu Vatsavayi32581242016-08-31 11:03:20 -07003041 struct octnet_buf_free_info *finfo)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003042{
3043 int retval;
3044 struct octeon_soft_command *sc;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003045 struct lio *lio;
3046 int ring_doorbell;
Raghu Vatsavayi6a885b62016-06-14 16:54:51 -07003047 u32 len;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003048
3049 lio = finfo->lio;
3050
3051 sc = octeon_alloc_soft_command_resp(oct, &ndata->cmd,
3052 sizeof(struct oct_timestamp_resp));
3053 finfo->sc = sc;
3054
3055 if (!sc) {
3056 dev_err(&oct->pci_dev->dev, "No memory for timestamped data packet\n");
3057 return IQ_SEND_FAILED;
3058 }
3059
3060 if (ndata->reqtype == REQTYPE_NORESP_NET)
3061 ndata->reqtype = REQTYPE_RESP_NET;
3062 else if (ndata->reqtype == REQTYPE_NORESP_NET_SG)
3063 ndata->reqtype = REQTYPE_RESP_NET_SG;
3064
3065 sc->callback = handle_timestamp;
3066 sc->callback_arg = finfo->skb;
3067 sc->iq_no = ndata->q_no;
3068
Raghu Vatsavayi5b823512016-09-01 11:16:07 -07003069 if (OCTEON_CN23XX_PF(oct))
3070 len = (u32)((struct octeon_instr_ih3 *)
3071 (&sc->cmd.cmd3.ih3))->dlengsz;
3072 else
3073 len = (u32)((struct octeon_instr_ih2 *)
3074 (&sc->cmd.cmd2.ih2))->dlengsz;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003075
Raghu Vatsavayi32581242016-08-31 11:03:20 -07003076 ring_doorbell = 1;
Raghu Vatsavayi5b823512016-09-01 11:16:07 -07003077
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003078 retval = octeon_send_command(oct, sc->iq_no, ring_doorbell, &sc->cmd,
Raghu Vatsavayi6a885b62016-06-14 16:54:51 -07003079 sc, len, ndata->reqtype);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003080
Raghu Vatsavayiddc173a2016-06-14 16:54:43 -07003081 if (retval == IQ_SEND_FAILED) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003082 dev_err(&oct->pci_dev->dev, "timestamp data packet failed status: %x\n",
3083 retval);
3084 octeon_free_soft_command(oct, sc);
3085 } else {
3086 netif_info(lio, tx_queued, lio->netdev, "Queued timestamp packet\n");
3087 }
3088
3089 return retval;
3090}
3091
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003092/** \brief Transmit networks packets to the Octeon interface
3093 * @param skbuff skbuff struct to be passed to network layer.
3094 * @param netdev pointer to network device
3095 * @returns whether the packet was transmitted to the device okay or not
3096 * (NETDEV_TX_OK or NETDEV_TX_BUSY)
3097 */
3098static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev)
3099{
3100 struct lio *lio;
3101 struct octnet_buf_free_info *finfo;
3102 union octnic_cmd_setup cmdsetup;
3103 struct octnic_data_pkt ndata;
3104 struct octeon_device *oct;
3105 struct oct_iq_stats *stats;
Raghu Vatsavayi6a885b62016-06-14 16:54:51 -07003106 struct octeon_instr_irh *irh;
3107 union tx_info *tx_info;
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07003108 int status = 0;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003109 int q_idx = 0, iq_no = 0;
Raghu Vatsavayi32581242016-08-31 11:03:20 -07003110 int j;
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07003111 u64 dptr = 0;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003112 u32 tag = 0;
3113
3114 lio = GET_LIO(netdev);
3115 oct = lio->oct_dev;
3116
3117 if (netif_is_multiqueue(netdev)) {
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07003118 q_idx = skb->queue_mapping;
3119 q_idx = (q_idx % (lio->linfo.num_txpciq));
3120 tag = q_idx;
3121 iq_no = lio->linfo.txpciq[q_idx].s.q_no;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003122 } else {
3123 iq_no = lio->txq;
3124 }
3125
3126 stats = &oct->instr_queue[iq_no]->stats;
3127
3128 /* Check for all conditions in which the current packet cannot be
3129 * transmitted.
3130 */
3131 if (!(atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING) ||
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003132 (!lio->linfo.link.s.link_up) ||
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003133 (skb->len <= 0)) {
3134 netif_info(lio, tx_err, lio->netdev,
3135 "Transmit failed link_status : %d\n",
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003136 lio->linfo.link.s.link_up);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003137 goto lio_xmit_failed;
3138 }
3139
3140 /* Use space in skb->cb to store info used to unmap and
3141 * free the buffers.
3142 */
3143 finfo = (struct octnet_buf_free_info *)skb->cb;
3144 finfo->lio = lio;
3145 finfo->skb = skb;
3146 finfo->sc = NULL;
3147
3148 /* Prepare the attributes for the data to be passed to OSI. */
3149 memset(&ndata, 0, sizeof(struct octnic_data_pkt));
3150
3151 ndata.buf = (void *)finfo;
3152
3153 ndata.q_no = iq_no;
3154
3155 if (netif_is_multiqueue(netdev)) {
3156 if (octnet_iq_is_full(oct, ndata.q_no)) {
3157 /* defer sending if queue is full */
3158 netif_info(lio, tx_err, lio->netdev, "Transmit failed iq:%d full\n",
3159 ndata.q_no);
3160 stats->tx_iq_busy++;
3161 return NETDEV_TX_BUSY;
3162 }
3163 } else {
3164 if (octnet_iq_is_full(oct, lio->txq)) {
3165 /* defer sending if queue is full */
3166 stats->tx_iq_busy++;
3167 netif_info(lio, tx_err, lio->netdev, "Transmit failed iq:%d full\n",
Raghu Vatsavayia2c64b62016-07-03 13:56:55 -07003168 lio->txq);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003169 return NETDEV_TX_BUSY;
3170 }
3171 }
3172 /* pr_info(" XMIT - valid Qs: %d, 1st Q no: %d, cpu: %d, q_no:%d\n",
Raghu Vatsavayia2c64b62016-07-03 13:56:55 -07003173 * lio->linfo.num_txpciq, lio->txq, cpu, ndata.q_no);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003174 */
3175
3176 ndata.datasize = skb->len;
3177
3178 cmdsetup.u64 = 0;
Raghu Vatsavayi7275ebf2016-06-14 16:54:49 -07003179 cmdsetup.s.iq_no = iq_no;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003180
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -07003181 if (skb->ip_summed == CHECKSUM_PARTIAL) {
3182 if (skb->encapsulation) {
3183 cmdsetup.s.tnl_csum = 1;
3184 stats->tx_vxlan++;
3185 } else {
3186 cmdsetup.s.transport_csum = 1;
3187 }
3188 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003189 if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) {
3190 skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS;
3191 cmdsetup.s.timestamp = 1;
3192 }
3193
3194 if (skb_shinfo(skb)->nr_frags == 0) {
3195 cmdsetup.s.u.datasize = skb->len;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003196 octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag);
Raghu Vatsavayia2c64b62016-07-03 13:56:55 -07003197
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003198 /* Offload checksum calculation for TCP/UDP packets */
Raghu Vatsavayi6a885b62016-06-14 16:54:51 -07003199 dptr = dma_map_single(&oct->pci_dev->dev,
3200 skb->data,
3201 skb->len,
3202 DMA_TO_DEVICE);
3203 if (dma_mapping_error(&oct->pci_dev->dev, dptr)) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003204 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 1\n",
3205 __func__);
3206 return NETDEV_TX_BUSY;
3207 }
3208
Raghu Vatsavayi5b823512016-09-01 11:16:07 -07003209 if (OCTEON_CN23XX_PF(oct))
3210 ndata.cmd.cmd3.dptr = dptr;
3211 else
3212 ndata.cmd.cmd2.dptr = dptr;
Raghu Vatsavayi6a885b62016-06-14 16:54:51 -07003213 finfo->dptr = dptr;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003214 ndata.reqtype = REQTYPE_NORESP_NET;
3215
3216 } else {
3217 int i, frags;
3218 struct skb_frag_struct *frag;
3219 struct octnic_gather *g;
3220
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07003221 spin_lock(&lio->glist_lock[q_idx]);
3222 g = (struct octnic_gather *)
3223 list_delete_head(&lio->glist[q_idx]);
3224 spin_unlock(&lio->glist_lock[q_idx]);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003225
3226 if (!g) {
3227 netif_info(lio, tx_err, lio->netdev,
3228 "Transmit scatter gather: glist null!\n");
3229 goto lio_xmit_failed;
3230 }
3231
3232 cmdsetup.s.gather = 1;
3233 cmdsetup.s.u.gatherptrs = (skb_shinfo(skb)->nr_frags + 1);
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003234 octnet_prepare_pci_cmd(oct, &ndata.cmd, &cmdsetup, tag);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003235
3236 memset(g->sg, 0, g->sg_size);
3237
3238 g->sg[0].ptr[0] = dma_map_single(&oct->pci_dev->dev,
3239 skb->data,
3240 (skb->len - skb->data_len),
3241 DMA_TO_DEVICE);
3242 if (dma_mapping_error(&oct->pci_dev->dev, g->sg[0].ptr[0])) {
3243 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 2\n",
3244 __func__);
3245 return NETDEV_TX_BUSY;
3246 }
3247 add_sg_size(&g->sg[0], (skb->len - skb->data_len), 0);
3248
3249 frags = skb_shinfo(skb)->nr_frags;
3250 i = 1;
3251 while (frags--) {
3252 frag = &skb_shinfo(skb)->frags[i - 1];
3253
3254 g->sg[(i >> 2)].ptr[(i & 3)] =
3255 dma_map_page(&oct->pci_dev->dev,
3256 frag->page.p,
3257 frag->page_offset,
3258 frag->size,
3259 DMA_TO_DEVICE);
3260
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07003261 if (dma_mapping_error(&oct->pci_dev->dev,
3262 g->sg[i >> 2].ptr[i & 3])) {
3263 dma_unmap_single(&oct->pci_dev->dev,
3264 g->sg[0].ptr[0],
3265 skb->len - skb->data_len,
3266 DMA_TO_DEVICE);
3267 for (j = 1; j < i; j++) {
3268 frag = &skb_shinfo(skb)->frags[j - 1];
3269 dma_unmap_page(&oct->pci_dev->dev,
3270 g->sg[j >> 2].ptr[j & 3],
3271 frag->size,
3272 DMA_TO_DEVICE);
3273 }
3274 dev_err(&oct->pci_dev->dev, "%s DMA mapping error 3\n",
3275 __func__);
3276 return NETDEV_TX_BUSY;
3277 }
3278
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003279 add_sg_size(&g->sg[(i >> 2)], frag->size, (i & 3));
3280 i++;
3281 }
3282
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07003283 dma_sync_single_for_device(&oct->pci_dev->dev, g->sg_dma_ptr,
3284 g->sg_size, DMA_TO_DEVICE);
3285 dptr = g->sg_dma_ptr;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003286
Raghu Vatsavayi5b823512016-09-01 11:16:07 -07003287 if (OCTEON_CN23XX_PF(oct))
3288 ndata.cmd.cmd3.dptr = dptr;
3289 else
3290 ndata.cmd.cmd2.dptr = dptr;
Raghu Vatsavayi6a885b62016-06-14 16:54:51 -07003291 finfo->dptr = dptr;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003292 finfo->g = g;
3293
3294 ndata.reqtype = REQTYPE_NORESP_NET_SG;
3295 }
3296
Raghu Vatsavayi5b823512016-09-01 11:16:07 -07003297 if (OCTEON_CN23XX_PF(oct)) {
3298 irh = (struct octeon_instr_irh *)&ndata.cmd.cmd3.irh;
3299 tx_info = (union tx_info *)&ndata.cmd.cmd3.ossp[0];
3300 } else {
3301 irh = (struct octeon_instr_irh *)&ndata.cmd.cmd2.irh;
3302 tx_info = (union tx_info *)&ndata.cmd.cmd2.ossp[0];
3303 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003304
Raghu Vatsavayi6a885b62016-06-14 16:54:51 -07003305 if (skb_shinfo(skb)->gso_size) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003306 tx_info->s.gso_size = skb_shinfo(skb)->gso_size;
3307 tx_info->s.gso_segs = skb_shinfo(skb)->gso_segs;
Raghu Vatsavayi1f164712016-06-21 22:53:11 -07003308 stats->tx_gso++;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003309 }
Raghu Vatsavayi1f164712016-06-21 22:53:11 -07003310
Raghu Vatsavayi0da0b772016-06-21 22:53:04 -07003311 /* HW insert VLAN tag */
3312 if (skb_vlan_tag_present(skb)) {
3313 irh->priority = skb_vlan_tag_get(skb) >> 13;
3314 irh->vlan = skb_vlan_tag_get(skb) & 0xfff;
3315 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003316
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003317 if (unlikely(cmdsetup.s.timestamp))
Raghu Vatsavayi32581242016-08-31 11:03:20 -07003318 status = send_nic_timestamp_pkt(oct, &ndata, finfo);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003319 else
Raghu Vatsavayi32581242016-08-31 11:03:20 -07003320 status = octnet_send_nic_data_pkt(oct, &ndata);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003321 if (status == IQ_SEND_FAILED)
3322 goto lio_xmit_failed;
3323
3324 netif_info(lio, tx_queued, lio->netdev, "Transmit queued successfully\n");
3325
3326 if (status == IQ_SEND_STOP)
3327 stop_q(lio->netdev, q_idx);
3328
Florian Westphal860e9532016-05-03 16:33:13 +02003329 netif_trans_update(netdev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003330
Raghu Vatsavayi1f164712016-06-21 22:53:11 -07003331 if (skb_shinfo(skb)->gso_size)
3332 stats->tx_done += skb_shinfo(skb)->gso_segs;
3333 else
3334 stats->tx_done++;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003335 stats->tx_tot_bytes += skb->len;
3336
3337 return NETDEV_TX_OK;
3338
3339lio_xmit_failed:
3340 stats->tx_dropped++;
3341 netif_info(lio, tx_err, lio->netdev, "IQ%d Transmit dropped:%llu\n",
3342 iq_no, stats->tx_dropped);
Raghu Vatsavayi6a885b62016-06-14 16:54:51 -07003343 if (dptr)
3344 dma_unmap_single(&oct->pci_dev->dev, dptr,
3345 ndata.datasize, DMA_TO_DEVICE);
Raghu Vatsavayicabeb132016-06-14 16:54:47 -07003346 tx_buffer_free(skb);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003347 return NETDEV_TX_OK;
3348}
3349
3350/** \brief Network device Tx timeout
3351 * @param netdev pointer to network device
3352 */
3353static void liquidio_tx_timeout(struct net_device *netdev)
3354{
3355 struct lio *lio;
3356
3357 lio = GET_LIO(netdev);
3358
3359 netif_info(lio, tx_err, lio->netdev,
3360 "Transmit timeout tx_dropped:%ld, waking up queues now!!\n",
3361 netdev->stats.tx_dropped);
Florian Westphal860e9532016-05-03 16:33:13 +02003362 netif_trans_update(netdev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003363 txqs_wake(netdev);
3364}
3365
Raghu Vatsavayi63245f22016-06-21 22:53:05 -07003366static int liquidio_vlan_rx_add_vid(struct net_device *netdev,
3367 __be16 proto __attribute__((unused)),
3368 u16 vid)
3369{
3370 struct lio *lio = GET_LIO(netdev);
3371 struct octeon_device *oct = lio->oct_dev;
3372 struct octnic_ctrl_pkt nctrl;
3373 int ret = 0;
3374
3375 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
3376
3377 nctrl.ncmd.u64 = 0;
3378 nctrl.ncmd.s.cmd = OCTNET_CMD_ADD_VLAN_FILTER;
3379 nctrl.ncmd.s.param1 = vid;
3380 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
3381 nctrl.wait_time = 100;
3382 nctrl.netpndev = (u64)netdev;
3383 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
3384
3385 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
3386 if (ret < 0) {
3387 dev_err(&oct->pci_dev->dev, "Add VLAN filter failed in core (ret: 0x%x)\n",
3388 ret);
3389 }
3390
3391 return ret;
3392}
3393
3394static int liquidio_vlan_rx_kill_vid(struct net_device *netdev,
3395 __be16 proto __attribute__((unused)),
3396 u16 vid)
3397{
3398 struct lio *lio = GET_LIO(netdev);
3399 struct octeon_device *oct = lio->oct_dev;
3400 struct octnic_ctrl_pkt nctrl;
3401 int ret = 0;
3402
3403 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
3404
3405 nctrl.ncmd.u64 = 0;
3406 nctrl.ncmd.s.cmd = OCTNET_CMD_DEL_VLAN_FILTER;
3407 nctrl.ncmd.s.param1 = vid;
3408 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
3409 nctrl.wait_time = 100;
3410 nctrl.netpndev = (u64)netdev;
3411 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
3412
3413 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
3414 if (ret < 0) {
3415 dev_err(&oct->pci_dev->dev, "Add VLAN filter failed in core (ret: 0x%x)\n",
3416 ret);
3417 }
3418 return ret;
3419}
3420
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -07003421/** Sending command to enable/disable RX checksum offload
3422 * @param netdev pointer to network device
3423 * @param command OCTNET_CMD_TNL_RX_CSUM_CTL
3424 * @param rx_cmd_bit OCTNET_CMD_RXCSUM_ENABLE/
3425 * OCTNET_CMD_RXCSUM_DISABLE
3426 * @returns SUCCESS or FAILURE
3427 */
Nicholas Mc Guirec41419b2016-08-22 17:52:00 +02003428static int liquidio_set_rxcsum_command(struct net_device *netdev, int command,
3429 u8 rx_cmd)
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -07003430{
3431 struct lio *lio = GET_LIO(netdev);
3432 struct octeon_device *oct = lio->oct_dev;
3433 struct octnic_ctrl_pkt nctrl;
3434 int ret = 0;
3435
3436 nctrl.ncmd.u64 = 0;
3437 nctrl.ncmd.s.cmd = command;
3438 nctrl.ncmd.s.param1 = rx_cmd;
3439 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
3440 nctrl.wait_time = 100;
3441 nctrl.netpndev = (u64)netdev;
3442 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
3443
3444 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
3445 if (ret < 0) {
3446 dev_err(&oct->pci_dev->dev,
3447 "DEVFLAGS RXCSUM change failed in core(ret:0x%x)\n",
3448 ret);
3449 }
3450 return ret;
3451}
3452
3453/** Sending command to add/delete VxLAN UDP port to firmware
3454 * @param netdev pointer to network device
3455 * @param command OCTNET_CMD_VXLAN_PORT_CONFIG
3456 * @param vxlan_port VxLAN port to be added or deleted
3457 * @param vxlan_cmd_bit OCTNET_CMD_VXLAN_PORT_ADD,
3458 * OCTNET_CMD_VXLAN_PORT_DEL
3459 * @returns SUCCESS or FAILURE
3460 */
3461static int liquidio_vxlan_port_command(struct net_device *netdev, int command,
3462 u16 vxlan_port, u8 vxlan_cmd_bit)
3463{
3464 struct lio *lio = GET_LIO(netdev);
3465 struct octeon_device *oct = lio->oct_dev;
3466 struct octnic_ctrl_pkt nctrl;
3467 int ret = 0;
3468
3469 nctrl.ncmd.u64 = 0;
3470 nctrl.ncmd.s.cmd = command;
3471 nctrl.ncmd.s.more = vxlan_cmd_bit;
3472 nctrl.ncmd.s.param1 = vxlan_port;
3473 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
3474 nctrl.wait_time = 100;
3475 nctrl.netpndev = (u64)netdev;
3476 nctrl.cb_fn = liquidio_link_ctrl_cmd_completion;
3477
3478 ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl);
3479 if (ret < 0) {
3480 dev_err(&oct->pci_dev->dev,
3481 "VxLAN port add/delete failed in core (ret:0x%x)\n",
3482 ret);
3483 }
3484 return ret;
3485}
3486
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003487/** \brief Net device fix features
3488 * @param netdev pointer to network device
3489 * @param request features requested
3490 * @returns updated features list
3491 */
3492static netdev_features_t liquidio_fix_features(struct net_device *netdev,
3493 netdev_features_t request)
3494{
3495 struct lio *lio = netdev_priv(netdev);
3496
3497 if ((request & NETIF_F_RXCSUM) &&
3498 !(lio->dev_capability & NETIF_F_RXCSUM))
3499 request &= ~NETIF_F_RXCSUM;
3500
3501 if ((request & NETIF_F_HW_CSUM) &&
3502 !(lio->dev_capability & NETIF_F_HW_CSUM))
3503 request &= ~NETIF_F_HW_CSUM;
3504
3505 if ((request & NETIF_F_TSO) && !(lio->dev_capability & NETIF_F_TSO))
3506 request &= ~NETIF_F_TSO;
3507
3508 if ((request & NETIF_F_TSO6) && !(lio->dev_capability & NETIF_F_TSO6))
3509 request &= ~NETIF_F_TSO6;
3510
3511 if ((request & NETIF_F_LRO) && !(lio->dev_capability & NETIF_F_LRO))
3512 request &= ~NETIF_F_LRO;
3513
3514 /*Disable LRO if RXCSUM is off */
3515 if (!(request & NETIF_F_RXCSUM) && (netdev->features & NETIF_F_LRO) &&
3516 (lio->dev_capability & NETIF_F_LRO))
3517 request &= ~NETIF_F_LRO;
3518
3519 return request;
3520}
3521
3522/** \brief Net device set features
3523 * @param netdev pointer to network device
3524 * @param features features to enable/disable
3525 */
3526static int liquidio_set_features(struct net_device *netdev,
3527 netdev_features_t features)
3528{
3529 struct lio *lio = netdev_priv(netdev);
3530
3531 if (!((netdev->features ^ features) & NETIF_F_LRO))
3532 return 0;
3533
3534 if ((features & NETIF_F_LRO) && (lio->dev_capability & NETIF_F_LRO))
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003535 liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE,
3536 OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003537 else if (!(features & NETIF_F_LRO) &&
3538 (lio->dev_capability & NETIF_F_LRO))
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003539 liquidio_set_feature(netdev, OCTNET_CMD_LRO_DISABLE,
3540 OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003541
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -07003542 /* Sending command to firmware to enable/disable RX checksum
3543 * offload settings using ethtool
3544 */
3545 if (!(netdev->features & NETIF_F_RXCSUM) &&
3546 (lio->enc_dev_capability & NETIF_F_RXCSUM) &&
3547 (features & NETIF_F_RXCSUM))
3548 liquidio_set_rxcsum_command(netdev,
3549 OCTNET_CMD_TNL_RX_CSUM_CTL,
3550 OCTNET_CMD_RXCSUM_ENABLE);
3551 else if ((netdev->features & NETIF_F_RXCSUM) &&
3552 (lio->enc_dev_capability & NETIF_F_RXCSUM) &&
3553 !(features & NETIF_F_RXCSUM))
3554 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
3555 OCTNET_CMD_RXCSUM_DISABLE);
3556
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003557 return 0;
3558}
3559
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -07003560static void liquidio_add_vxlan_port(struct net_device *netdev,
3561 struct udp_tunnel_info *ti)
3562{
3563 if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
3564 return;
3565
3566 liquidio_vxlan_port_command(netdev,
3567 OCTNET_CMD_VXLAN_PORT_CONFIG,
3568 htons(ti->port),
3569 OCTNET_CMD_VXLAN_PORT_ADD);
3570}
3571
3572static void liquidio_del_vxlan_port(struct net_device *netdev,
3573 struct udp_tunnel_info *ti)
3574{
3575 if (ti->type != UDP_TUNNEL_TYPE_VXLAN)
3576 return;
3577
3578 liquidio_vxlan_port_command(netdev,
3579 OCTNET_CMD_VXLAN_PORT_CONFIG,
3580 htons(ti->port),
3581 OCTNET_CMD_VXLAN_PORT_DEL);
3582}
3583
Raghu Vatsavayi86dea552016-11-14 15:54:43 -08003584static int __liquidio_set_vf_mac(struct net_device *netdev, int vfidx,
3585 u8 *mac, bool is_admin_assigned)
3586{
3587 struct lio *lio = GET_LIO(netdev);
3588 struct octeon_device *oct = lio->oct_dev;
3589 struct octnic_ctrl_pkt nctrl;
3590
3591 if (!is_valid_ether_addr(mac))
3592 return -EINVAL;
3593
3594 if (vfidx < 0 || vfidx >= oct->sriov_info.max_vfs)
3595 return -EINVAL;
3596
3597 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
3598
3599 nctrl.ncmd.u64 = 0;
3600 nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR;
3601 /* vfidx is 0 based, but vf_num (param1) is 1 based */
3602 nctrl.ncmd.s.param1 = vfidx + 1;
3603 nctrl.ncmd.s.param2 = (is_admin_assigned ? 1 : 0);
3604 nctrl.ncmd.s.more = 1;
3605 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
3606 nctrl.cb_fn = 0;
3607 nctrl.wait_time = LIO_CMD_WAIT_TM;
3608
3609 nctrl.udd[0] = 0;
3610 /* The MAC Address is presented in network byte order. */
3611 ether_addr_copy((u8 *)&nctrl.udd[0] + 2, mac);
3612
3613 oct->sriov_info.vf_macaddr[vfidx] = nctrl.udd[0];
3614
3615 octnet_send_nic_ctrl_pkt(oct, &nctrl);
3616
3617 return 0;
3618}
3619
3620static int liquidio_set_vf_mac(struct net_device *netdev, int vfidx, u8 *mac)
3621{
3622 struct lio *lio = GET_LIO(netdev);
3623 struct octeon_device *oct = lio->oct_dev;
3624 int retval;
3625
3626 retval = __liquidio_set_vf_mac(netdev, vfidx, mac, true);
3627 if (!retval)
3628 cn23xx_tell_vf_its_macaddr_changed(oct, vfidx, mac);
3629
3630 return retval;
3631}
3632
3633static int liquidio_set_vf_vlan(struct net_device *netdev, int vfidx,
3634 u16 vlan, u8 qos, __be16 vlan_proto)
3635{
3636 struct lio *lio = GET_LIO(netdev);
3637 struct octeon_device *oct = lio->oct_dev;
3638 struct octnic_ctrl_pkt nctrl;
3639 u16 vlantci;
3640
3641 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced)
3642 return -EINVAL;
3643
3644 if (vlan_proto != htons(ETH_P_8021Q))
3645 return -EPROTONOSUPPORT;
3646
3647 if (vlan >= VLAN_N_VID || qos > 7)
3648 return -EINVAL;
3649
3650 if (vlan)
3651 vlantci = vlan | (u16)qos << VLAN_PRIO_SHIFT;
3652 else
3653 vlantci = 0;
3654
3655 if (oct->sriov_info.vf_vlantci[vfidx] == vlantci)
3656 return 0;
3657
3658 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
3659
3660 if (vlan)
3661 nctrl.ncmd.s.cmd = OCTNET_CMD_ADD_VLAN_FILTER;
3662 else
3663 nctrl.ncmd.s.cmd = OCTNET_CMD_DEL_VLAN_FILTER;
3664
3665 nctrl.ncmd.s.param1 = vlantci;
3666 nctrl.ncmd.s.param2 =
3667 vfidx + 1; /* vfidx is 0 based, but vf_num (param2) is 1 based */
3668 nctrl.ncmd.s.more = 0;
3669 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
3670 nctrl.cb_fn = 0;
3671 nctrl.wait_time = LIO_CMD_WAIT_TM;
3672
3673 octnet_send_nic_ctrl_pkt(oct, &nctrl);
3674
3675 oct->sriov_info.vf_vlantci[vfidx] = vlantci;
3676
3677 return 0;
3678}
3679
3680static int liquidio_get_vf_config(struct net_device *netdev, int vfidx,
3681 struct ifla_vf_info *ivi)
3682{
3683 struct lio *lio = GET_LIO(netdev);
3684 struct octeon_device *oct = lio->oct_dev;
3685 u8 *macaddr;
3686
3687 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced)
3688 return -EINVAL;
3689
3690 ivi->vf = vfidx;
3691 macaddr = 2 + (u8 *)&oct->sriov_info.vf_macaddr[vfidx];
3692 ether_addr_copy(&ivi->mac[0], macaddr);
3693 ivi->vlan = oct->sriov_info.vf_vlantci[vfidx] & VLAN_VID_MASK;
3694 ivi->qos = oct->sriov_info.vf_vlantci[vfidx] >> VLAN_PRIO_SHIFT;
3695 ivi->linkstate = oct->sriov_info.vf_linkstate[vfidx];
3696 return 0;
3697}
3698
3699static int liquidio_set_vf_link_state(struct net_device *netdev, int vfidx,
3700 int linkstate)
3701{
3702 struct lio *lio = GET_LIO(netdev);
3703 struct octeon_device *oct = lio->oct_dev;
3704 struct octnic_ctrl_pkt nctrl;
3705
3706 if (vfidx < 0 || vfidx >= oct->sriov_info.num_vfs_alloced)
3707 return -EINVAL;
3708
3709 if (oct->sriov_info.vf_linkstate[vfidx] == linkstate)
3710 return 0;
3711
3712 memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt));
3713 nctrl.ncmd.s.cmd = OCTNET_CMD_SET_VF_LINKSTATE;
3714 nctrl.ncmd.s.param1 =
3715 vfidx + 1; /* vfidx is 0 based, but vf_num (param1) is 1 based */
3716 nctrl.ncmd.s.param2 = linkstate;
3717 nctrl.ncmd.s.more = 0;
3718 nctrl.iq_no = lio->linfo.txpciq[0].s.q_no;
3719 nctrl.cb_fn = 0;
3720 nctrl.wait_time = LIO_CMD_WAIT_TM;
3721
3722 octnet_send_nic_ctrl_pkt(oct, &nctrl);
3723
3724 oct->sriov_info.vf_linkstate[vfidx] = linkstate;
3725
3726 return 0;
3727}
3728
Raghu Vatsavayi97a25322016-11-14 15:54:47 -08003729static const struct net_device_ops lionetdevops = {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003730 .ndo_open = liquidio_open,
3731 .ndo_stop = liquidio_stop,
3732 .ndo_start_xmit = liquidio_xmit,
3733 .ndo_get_stats = liquidio_get_stats,
3734 .ndo_set_mac_address = liquidio_set_mac,
3735 .ndo_set_rx_mode = liquidio_set_mcast_list,
3736 .ndo_tx_timeout = liquidio_tx_timeout,
Raghu Vatsavayi63245f22016-06-21 22:53:05 -07003737
3738 .ndo_vlan_rx_add_vid = liquidio_vlan_rx_add_vid,
3739 .ndo_vlan_rx_kill_vid = liquidio_vlan_rx_kill_vid,
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003740 .ndo_change_mtu = liquidio_change_mtu,
3741 .ndo_do_ioctl = liquidio_ioctl,
3742 .ndo_fix_features = liquidio_fix_features,
3743 .ndo_set_features = liquidio_set_features,
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -07003744 .ndo_udp_tunnel_add = liquidio_add_vxlan_port,
3745 .ndo_udp_tunnel_del = liquidio_del_vxlan_port,
Raghu Vatsavayi86dea552016-11-14 15:54:43 -08003746 .ndo_set_vf_mac = liquidio_set_vf_mac,
3747 .ndo_set_vf_vlan = liquidio_set_vf_vlan,
3748 .ndo_get_vf_config = liquidio_get_vf_config,
3749 .ndo_set_vf_link_state = liquidio_set_vf_link_state,
Raghu Vatsavayi97a25322016-11-14 15:54:47 -08003750 .ndo_select_queue = select_q
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003751};
3752
3753/** \brief Entry point for the liquidio module
3754 */
3755static int __init liquidio_init(void)
3756{
3757 int i;
3758 struct handshake *hs;
3759
3760 init_completion(&first_stage);
3761
Raghu Vatsavayi97a25322016-11-14 15:54:47 -08003762 octeon_init_device_list(OCTEON_CONFIG_TYPE_DEFAULT);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003763
3764 if (liquidio_init_pci())
3765 return -EINVAL;
3766
3767 wait_for_completion_timeout(&first_stage, msecs_to_jiffies(1000));
3768
3769 for (i = 0; i < MAX_OCTEON_DEVICES; i++) {
3770 hs = &handshake[i];
3771 if (hs->pci_dev) {
3772 wait_for_completion(&hs->init);
3773 if (!hs->init_ok) {
3774 /* init handshake failed */
3775 dev_err(&hs->pci_dev->dev,
3776 "Failed to init device\n");
3777 liquidio_deinit_pci();
3778 return -EIO;
3779 }
3780 }
3781 }
3782
3783 for (i = 0; i < MAX_OCTEON_DEVICES; i++) {
3784 hs = &handshake[i];
3785 if (hs->pci_dev) {
3786 wait_for_completion_timeout(&hs->started,
3787 msecs_to_jiffies(30000));
3788 if (!hs->started_ok) {
3789 /* starter handshake failed */
3790 dev_err(&hs->pci_dev->dev,
3791 "Firmware failed to start\n");
3792 liquidio_deinit_pci();
3793 return -EIO;
3794 }
3795 }
3796 }
3797
3798 return 0;
3799}
3800
Raghu Vatsavayi5b173cf2015-06-12 18:11:50 -07003801static int lio_nic_info(struct octeon_recv_info *recv_info, void *buf)
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003802{
3803 struct octeon_device *oct = (struct octeon_device *)buf;
3804 struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003805 int gmxport = 0;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003806 union oct_link_status *ls;
3807 int i;
3808
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003809 if (recv_pkt->buffer_size[0] != sizeof(*ls)) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003810 dev_err(&oct->pci_dev->dev, "Malformed NIC_INFO, len=%d, ifidx=%d\n",
3811 recv_pkt->buffer_size[0],
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003812 recv_pkt->rh.r_nic_info.gmxport);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003813 goto nic_info_err;
3814 }
3815
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003816 gmxport = recv_pkt->rh.r_nic_info.gmxport;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003817 ls = (union oct_link_status *)get_rbd(recv_pkt->buffer_ptr[0]);
3818
3819 octeon_swap_8B_data((u64 *)ls, (sizeof(union oct_link_status)) >> 3);
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003820 for (i = 0; i < oct->ifcount; i++) {
3821 if (oct->props[i].gmxport == gmxport) {
3822 update_link_status(oct->props[i].netdev, ls);
3823 break;
3824 }
3825 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003826
3827nic_info_err:
3828 for (i = 0; i < recv_pkt->buffer_count; i++)
3829 recv_buffer_free(recv_pkt->buffer_ptr[i]);
3830 octeon_free_recv_info(recv_info);
3831 return 0;
3832}
3833
3834/**
3835 * \brief Setup network interfaces
3836 * @param octeon_dev octeon device
3837 *
3838 * Called during init time for each device. It assumes the NIC
3839 * is already up and running. The link information for each
3840 * interface is passed in link_info.
3841 */
3842static int setup_nic_devices(struct octeon_device *octeon_dev)
3843{
3844 struct lio *lio = NULL;
3845 struct net_device *netdev;
3846 u8 mac[6], i, j;
3847 struct octeon_soft_command *sc;
3848 struct liquidio_if_cfg_context *ctx;
3849 struct liquidio_if_cfg_resp *resp;
3850 struct octdev_props *props;
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07003851 int retval, num_iqueues, num_oqueues;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003852 union oct_nic_if_cfg if_cfg;
3853 unsigned int base_queue;
3854 unsigned int gmx_port_id;
Raghu Vatsavayi83101ce2016-08-31 11:03:21 -07003855 u32 resp_size, ctx_size, data_size;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003856 u32 ifidx_or_pfnum;
Raghu Vatsavayi83101ce2016-08-31 11:03:21 -07003857 struct lio_version *vdata;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003858
3859 /* This is to handle link status changes */
3860 octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC,
3861 OPCODE_NIC_INFO,
3862 lio_nic_info, octeon_dev);
3863
3864 /* REQTYPE_RESP_NET and REQTYPE_SOFT_COMMAND do not have free functions.
3865 * They are handled directly.
3866 */
3867 octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET,
3868 free_netbuf);
3869
3870 octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET_SG,
3871 free_netsgbuf);
3872
3873 octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_RESP_NET_SG,
3874 free_netsgbuf_with_resp);
3875
3876 for (i = 0; i < octeon_dev->ifcount; i++) {
3877 resp_size = sizeof(struct liquidio_if_cfg_resp);
3878 ctx_size = sizeof(struct liquidio_if_cfg_context);
Raghu Vatsavayi83101ce2016-08-31 11:03:21 -07003879 data_size = sizeof(struct lio_version);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003880 sc = (struct octeon_soft_command *)
Raghu Vatsavayi83101ce2016-08-31 11:03:21 -07003881 octeon_alloc_soft_command(octeon_dev, data_size,
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003882 resp_size, ctx_size);
3883 resp = (struct liquidio_if_cfg_resp *)sc->virtrptr;
3884 ctx = (struct liquidio_if_cfg_context *)sc->ctxptr;
Raghu Vatsavayi83101ce2016-08-31 11:03:21 -07003885 vdata = (struct lio_version *)sc->virtdptr;
3886
3887 *((u64 *)vdata) = 0;
3888 vdata->major = cpu_to_be16(LIQUIDIO_BASE_MAJOR_VERSION);
3889 vdata->minor = cpu_to_be16(LIQUIDIO_BASE_MINOR_VERSION);
3890 vdata->micro = cpu_to_be16(LIQUIDIO_BASE_MICRO_VERSION);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003891
Raghu Vatsavayie86b1ab2016-08-31 11:03:24 -07003892 if (OCTEON_CN23XX_PF(octeon_dev)) {
3893 num_iqueues = octeon_dev->sriov_info.num_pf_rings;
3894 num_oqueues = octeon_dev->sriov_info.num_pf_rings;
3895 base_queue = octeon_dev->sriov_info.pf_srn;
3896
3897 gmx_port_id = octeon_dev->pf_num;
3898 ifidx_or_pfnum = octeon_dev->pf_num;
3899 } else {
3900 num_iqueues = CFG_GET_NUM_TXQS_NIC_IF(
3901 octeon_get_conf(octeon_dev), i);
3902 num_oqueues = CFG_GET_NUM_RXQS_NIC_IF(
3903 octeon_get_conf(octeon_dev), i);
3904 base_queue = CFG_GET_BASE_QUE_NIC_IF(
3905 octeon_get_conf(octeon_dev), i);
3906 gmx_port_id = CFG_GET_GMXID_NIC_IF(
3907 octeon_get_conf(octeon_dev), i);
3908 ifidx_or_pfnum = i;
3909 }
Raghu Vatsavayi3dcef2c2016-07-03 13:56:51 -07003910
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003911 dev_dbg(&octeon_dev->pci_dev->dev,
3912 "requesting config for interface %d, iqs %d, oqs %d\n",
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003913 ifidx_or_pfnum, num_iqueues, num_oqueues);
Raghu Vatsavayia7d5a3d2016-07-03 13:56:48 -07003914 WRITE_ONCE(ctx->cond, 0);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003915 ctx->octeon_id = lio_get_device_id(octeon_dev);
3916 init_waitqueue_head(&ctx->wc);
3917
3918 if_cfg.u64 = 0;
3919 if_cfg.s.num_iqueues = num_iqueues;
3920 if_cfg.s.num_oqueues = num_oqueues;
3921 if_cfg.s.base_queue = base_queue;
3922 if_cfg.s.gmx_port_id = gmx_port_id;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003923
3924 sc->iq_no = 0;
3925
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003926 octeon_prepare_soft_command(octeon_dev, sc, OPCODE_NIC,
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003927 OPCODE_NIC_IF_CFG, 0,
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003928 if_cfg.u64, 0);
3929
3930 sc->callback = if_cfg_callback;
3931 sc->callback_arg = sc;
Raghu Vatsavayi55893a62016-07-03 13:56:50 -07003932 sc->wait_time = 3000;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003933
3934 retval = octeon_send_soft_command(octeon_dev, sc);
Raghu Vatsavayiddc173a2016-06-14 16:54:43 -07003935 if (retval == IQ_SEND_FAILED) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003936 dev_err(&octeon_dev->pci_dev->dev,
3937 "iq/oq config failed status: %x\n",
3938 retval);
3939 /* Soft instr is freed by driver in case of failure. */
3940 goto setup_nic_dev_fail;
3941 }
3942
3943 /* Sleep on a wait queue till the cond flag indicates that the
3944 * response arrived or timed-out.
3945 */
Raghu Vatsavayiafdf8412016-09-01 11:16:05 -07003946 if (sleep_cond(&ctx->wc, &ctx->cond) == -EINTR) {
3947 dev_err(&octeon_dev->pci_dev->dev, "Wait interrupted\n");
3948 goto setup_nic_wait_intr;
3949 }
3950
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003951 retval = resp->status;
3952 if (retval) {
3953 dev_err(&octeon_dev->pci_dev->dev, "iq/oq config failed\n");
3954 goto setup_nic_dev_fail;
3955 }
3956
3957 octeon_swap_8B_data((u64 *)(&resp->cfg_info),
3958 (sizeof(struct liquidio_if_cfg_info)) >> 3);
3959
3960 num_iqueues = hweight64(resp->cfg_info.iqmask);
3961 num_oqueues = hweight64(resp->cfg_info.oqmask);
3962
3963 if (!(num_iqueues) || !(num_oqueues)) {
3964 dev_err(&octeon_dev->pci_dev->dev,
3965 "Got bad iqueues (%016llx) or oqueues (%016llx) from firmware.\n",
3966 resp->cfg_info.iqmask,
3967 resp->cfg_info.oqmask);
3968 goto setup_nic_dev_fail;
3969 }
3970 dev_dbg(&octeon_dev->pci_dev->dev,
3971 "interface %d, iqmask %016llx, oqmask %016llx, numiqueues %d, numoqueues %d\n",
3972 i, resp->cfg_info.iqmask, resp->cfg_info.oqmask,
3973 num_iqueues, num_oqueues);
3974 netdev = alloc_etherdev_mq(LIO_SIZE, num_iqueues);
3975
3976 if (!netdev) {
3977 dev_err(&octeon_dev->pci_dev->dev, "Device allocation failed\n");
3978 goto setup_nic_dev_fail;
3979 }
3980
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003981 SET_NETDEV_DEV(netdev, &octeon_dev->pci_dev->dev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003982
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003983 /* Associate the routines that will handle different
3984 * netdev tasks.
3985 */
3986 netdev->netdev_ops = &lionetdevops;
3987
3988 lio = GET_LIO(netdev);
3989
3990 memset(lio, 0, sizeof(struct lio));
3991
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07003992 lio->ifidx = ifidx_or_pfnum;
3993
3994 props = &octeon_dev->props[i];
3995 props->gmxport = resp->cfg_info.linfo.gmxport;
3996 props->netdev = netdev;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07003997
3998 lio->linfo.num_rxpciq = num_oqueues;
3999 lio->linfo.num_txpciq = num_iqueues;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004000 for (j = 0; j < num_oqueues; j++) {
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07004001 lio->linfo.rxpciq[j].u64 =
4002 resp->cfg_info.linfo.rxpciq[j].u64;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004003 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004004 for (j = 0; j < num_iqueues; j++) {
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07004005 lio->linfo.txpciq[j].u64 =
4006 resp->cfg_info.linfo.txpciq[j].u64;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004007 }
4008 lio->linfo.hw_addr = resp->cfg_info.linfo.hw_addr;
4009 lio->linfo.gmxport = resp->cfg_info.linfo.gmxport;
4010 lio->linfo.link.u64 = resp->cfg_info.linfo.link.u64;
4011
4012 lio->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE);
4013
Raghu Vatsavayie86b1ab2016-08-31 11:03:24 -07004014 if (OCTEON_CN23XX_PF(octeon_dev) ||
4015 OCTEON_CN6XXX(octeon_dev)) {
4016 lio->dev_capability = NETIF_F_HIGHDMA
4017 | NETIF_F_IP_CSUM
4018 | NETIF_F_IPV6_CSUM
4019 | NETIF_F_SG | NETIF_F_RXCSUM
4020 | NETIF_F_GRO
4021 | NETIF_F_TSO | NETIF_F_TSO6
4022 | NETIF_F_LRO;
4023 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004024 netif_set_gso_max_size(netdev, OCTNIC_GSO_MAX_SIZE);
4025
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -07004026 /* Copy of transmit encapsulation capabilities:
4027 * TSO, TSO6, Checksums for this device
4028 */
4029 lio->enc_dev_capability = NETIF_F_IP_CSUM
4030 | NETIF_F_IPV6_CSUM
4031 | NETIF_F_GSO_UDP_TUNNEL
4032 | NETIF_F_HW_CSUM | NETIF_F_SG
4033 | NETIF_F_RXCSUM
4034 | NETIF_F_TSO | NETIF_F_TSO6
4035 | NETIF_F_LRO;
4036
4037 netdev->hw_enc_features = (lio->enc_dev_capability &
4038 ~NETIF_F_LRO);
4039
4040 lio->dev_capability |= NETIF_F_GSO_UDP_TUNNEL;
4041
Raghu Vatsavayi0da0b772016-06-21 22:53:04 -07004042 netdev->vlan_features = lio->dev_capability;
4043 /* Add any unchangeable hw features */
Raghu Vatsavayi63245f22016-06-21 22:53:05 -07004044 lio->dev_capability |= NETIF_F_HW_VLAN_CTAG_FILTER |
4045 NETIF_F_HW_VLAN_CTAG_RX |
Raghu Vatsavayi0da0b772016-06-21 22:53:04 -07004046 NETIF_F_HW_VLAN_CTAG_TX;
4047
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07004048 netdev->features = (lio->dev_capability & ~NETIF_F_LRO);
4049
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004050 netdev->hw_features = lio->dev_capability;
Raghu Vatsavayi0da0b772016-06-21 22:53:04 -07004051 /*HW_VLAN_RX and HW_VLAN_FILTER is always on*/
4052 netdev->hw_features = netdev->hw_features &
4053 ~NETIF_F_HW_VLAN_CTAG_RX;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004054
Jarod Wilson109cc162016-10-17 15:54:13 -04004055 /* MTU range: 68 - 16000 */
4056 netdev->min_mtu = LIO_MIN_MTU_SIZE;
4057 netdev->max_mtu = LIO_MAX_MTU_SIZE;
4058
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004059 /* Point to the properties for octeon device to which this
4060 * interface belongs.
4061 */
4062 lio->oct_dev = octeon_dev;
4063 lio->octprops = props;
4064 lio->netdev = netdev;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004065
4066 dev_dbg(&octeon_dev->pci_dev->dev,
4067 "if%d gmx: %d hw_addr: 0x%llx\n", i,
4068 lio->linfo.gmxport, CVM_CAST64(lio->linfo.hw_addr));
4069
Raghu Vatsavayi86dea552016-11-14 15:54:43 -08004070 for (j = 0; j < octeon_dev->sriov_info.max_vfs; j++) {
4071 u8 vfmac[ETH_ALEN];
4072
4073 random_ether_addr(&vfmac[0]);
4074 if (__liquidio_set_vf_mac(netdev, j,
4075 &vfmac[0], false)) {
4076 dev_err(&octeon_dev->pci_dev->dev,
4077 "Error setting VF%d MAC address\n",
4078 j);
4079 goto setup_nic_dev_fail;
4080 }
4081 }
4082
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004083 /* 64-bit swap required on LE machines */
4084 octeon_swap_8B_data(&lio->linfo.hw_addr, 1);
4085 for (j = 0; j < 6; j++)
4086 mac[j] = *((u8 *)(((u8 *)&lio->linfo.hw_addr) + 2 + j));
4087
4088 /* Copy MAC Address to OS network device structure */
4089
4090 ether_addr_copy(netdev->dev_addr, mac);
4091
Raghu Vatsavayi26236fa2016-06-14 16:54:44 -07004092 /* By default all interfaces on a single Octeon uses the same
4093 * tx and rx queues
4094 */
4095 lio->txq = lio->linfo.txpciq[0].s.q_no;
4096 lio->rxq = lio->linfo.rxpciq[0].s.q_no;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07004097 if (setup_io_queues(octeon_dev, i)) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004098 dev_err(&octeon_dev->pci_dev->dev, "I/O queues creation failed\n");
4099 goto setup_nic_dev_fail;
4100 }
4101
4102 ifstate_set(lio, LIO_IFSTATE_DROQ_OPS);
4103
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004104 lio->tx_qsize = octeon_get_tx_qsize(octeon_dev, lio->txq);
4105 lio->rx_qsize = octeon_get_rx_qsize(octeon_dev, lio->rxq);
4106
Raghu Vatsavayifcd2b5e2016-06-14 16:54:45 -07004107 if (setup_glists(octeon_dev, lio, num_iqueues)) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004108 dev_err(&octeon_dev->pci_dev->dev,
4109 "Gather list allocation failed\n");
4110 goto setup_nic_dev_fail;
4111 }
4112
4113 /* Register ethtool support */
4114 liquidio_set_ethtool_ops(netdev);
Raghu Vatsavayi30136392016-09-01 11:16:11 -07004115 if (lio->oct_dev->chip_id == OCTEON_CN23XX_PF_VID)
4116 octeon_dev->priv_flags = OCT_PRIV_FLAG_DEFAULT;
4117 else
4118 octeon_dev->priv_flags = 0x0;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004119
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07004120 if (netdev->features & NETIF_F_LRO)
Raghu Vatsavayia2c64b62016-07-03 13:56:55 -07004121 liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE,
4122 OCTNIC_LROIPV4 | OCTNIC_LROIPV6);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004123
Raghu Vatsavayi63245f22016-06-21 22:53:05 -07004124 liquidio_set_feature(netdev, OCTNET_CMD_ENABLE_VLAN_FILTER, 0);
4125
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004126 if ((debug != -1) && (debug & NETIF_MSG_HW))
Raghu Vatsavayi63245f22016-06-21 22:53:05 -07004127 liquidio_set_feature(netdev,
4128 OCTNET_CMD_VERBOSE_ENABLE, 0);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004129
Raghu Vatsavayi7b6b6c92016-09-01 11:16:04 -07004130 if (setup_link_status_change_wq(netdev))
4131 goto setup_nic_dev_fail;
4132
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004133 /* Register the network device with the OS */
4134 if (register_netdev(netdev)) {
4135 dev_err(&octeon_dev->pci_dev->dev, "Device registration failed\n");
4136 goto setup_nic_dev_fail;
4137 }
4138
4139 dev_dbg(&octeon_dev->pci_dev->dev,
4140 "Setup NIC ifidx:%d mac:%02x%02x%02x%02x%02x%02x\n",
4141 i, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]);
4142 netif_carrier_off(netdev);
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07004143 lio->link_changes++;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004144
4145 ifstate_set(lio, LIO_IFSTATE_REGISTERED);
4146
Raghu Vatsavayi01fb2372016-07-03 13:56:47 -07004147 /* Sending command to firmware to enable Rx checksum offload
4148 * by default at the time of setup of Liquidio driver for
4149 * this device
4150 */
4151 liquidio_set_rxcsum_command(netdev, OCTNET_CMD_TNL_RX_CSUM_CTL,
4152 OCTNET_CMD_RXCSUM_ENABLE);
4153 liquidio_set_feature(netdev, OCTNET_CMD_TNL_TX_CSUM_CTL,
4154 OCTNET_CMD_TXCSUM_ENABLE);
4155
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004156 dev_dbg(&octeon_dev->pci_dev->dev,
4157 "NIC ifidx:%d Setup successful\n", i);
4158
4159 octeon_free_soft_command(octeon_dev, sc);
4160 }
4161
4162 return 0;
4163
4164setup_nic_dev_fail:
4165
4166 octeon_free_soft_command(octeon_dev, sc);
4167
Raghu Vatsavayiafdf8412016-09-01 11:16:05 -07004168setup_nic_wait_intr:
4169
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004170 while (i--) {
4171 dev_err(&octeon_dev->pci_dev->dev,
4172 "NIC ifidx:%d Setup failed\n", i);
4173 liquidio_destroy_nic_device(octeon_dev, i);
4174 }
4175 return -ENODEV;
4176}
4177
Raghu Vatsavayica6139f2016-11-14 15:54:40 -08004178#ifdef CONFIG_PCI_IOV
4179static int octeon_enable_sriov(struct octeon_device *oct)
4180{
4181 unsigned int num_vfs_alloced = oct->sriov_info.num_vfs_alloced;
4182 struct pci_dev *vfdev;
4183 int err;
4184 u32 u;
4185
4186 if (OCTEON_CN23XX_PF(oct) && num_vfs_alloced) {
4187 err = pci_enable_sriov(oct->pci_dev,
4188 oct->sriov_info.num_vfs_alloced);
4189 if (err) {
4190 dev_err(&oct->pci_dev->dev,
4191 "OCTEON: Failed to enable PCI sriov: %d\n",
4192 err);
4193 oct->sriov_info.num_vfs_alloced = 0;
4194 return err;
4195 }
4196 oct->sriov_info.sriov_enabled = 1;
4197
4198 /* init lookup table that maps DPI ring number to VF pci_dev
4199 * struct pointer
4200 */
4201 u = 0;
4202 vfdev = pci_get_device(PCI_VENDOR_ID_CAVIUM,
4203 OCTEON_CN23XX_VF_VID, NULL);
4204 while (vfdev) {
4205 if (vfdev->is_virtfn &&
4206 (vfdev->physfn == oct->pci_dev)) {
4207 oct->sriov_info.dpiring_to_vfpcidev_lut[u] =
4208 vfdev;
4209 u += oct->sriov_info.rings_per_vf;
4210 }
4211 vfdev = pci_get_device(PCI_VENDOR_ID_CAVIUM,
4212 OCTEON_CN23XX_VF_VID, vfdev);
4213 }
4214 }
4215
4216 return num_vfs_alloced;
4217}
4218
4219static int lio_pci_sriov_disable(struct octeon_device *oct)
4220{
4221 int u;
4222
4223 if (pci_vfs_assigned(oct->pci_dev)) {
4224 dev_err(&oct->pci_dev->dev, "VFs are still assigned to VMs.\n");
4225 return -EPERM;
4226 }
4227
4228 pci_disable_sriov(oct->pci_dev);
4229
4230 u = 0;
4231 while (u < MAX_POSSIBLE_VFS) {
4232 oct->sriov_info.dpiring_to_vfpcidev_lut[u] = NULL;
4233 u += oct->sriov_info.rings_per_vf;
4234 }
4235
4236 oct->sriov_info.num_vfs_alloced = 0;
4237 dev_info(&oct->pci_dev->dev, "oct->pf_num:%d disabled VFs\n",
4238 oct->pf_num);
4239
4240 return 0;
4241}
4242
4243static int liquidio_enable_sriov(struct pci_dev *dev, int num_vfs)
4244{
4245 struct octeon_device *oct = pci_get_drvdata(dev);
4246 int ret = 0;
4247
4248 if ((num_vfs == oct->sriov_info.num_vfs_alloced) &&
4249 (oct->sriov_info.sriov_enabled)) {
4250 dev_info(&oct->pci_dev->dev, "oct->pf_num:%d already enabled num_vfs:%d\n",
4251 oct->pf_num, num_vfs);
4252 return 0;
4253 }
4254
4255 if (!num_vfs) {
4256 ret = lio_pci_sriov_disable(oct);
4257 } else if (num_vfs > oct->sriov_info.max_vfs) {
4258 dev_err(&oct->pci_dev->dev,
4259 "OCTEON: Max allowed VFs:%d user requested:%d",
4260 oct->sriov_info.max_vfs, num_vfs);
4261 ret = -EPERM;
4262 } else {
4263 oct->sriov_info.num_vfs_alloced = num_vfs;
4264 ret = octeon_enable_sriov(oct);
4265 dev_info(&oct->pci_dev->dev, "oct->pf_num:%d num_vfs:%d\n",
4266 oct->pf_num, num_vfs);
4267 }
4268
4269 return ret;
4270}
4271#endif
4272
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004273/**
4274 * \brief initialize the NIC
4275 * @param oct octeon device
4276 *
4277 * This initialization routine is called once the Octeon device application is
4278 * up and running
4279 */
4280static int liquidio_init_nic_module(struct octeon_device *oct)
4281{
4282 struct oct_intrmod_cfg *intrmod_cfg;
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07004283 int i, retval = 0;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004284 int num_nic_ports = CFG_GET_NUM_NIC_PORTS(octeon_get_conf(oct));
4285
4286 dev_dbg(&oct->pci_dev->dev, "Initializing network interfaces\n");
4287
4288 /* only default iq and oq were initialized
4289 * initialize the rest as well
4290 */
4291 /* run port_config command for each port */
4292 oct->ifcount = num_nic_ports;
4293
Raghu Vatsavayi30136392016-09-01 11:16:11 -07004294 memset(oct->props, 0, sizeof(struct octdev_props) * num_nic_ports);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004295
Raghu Vatsavayi0cece6c2016-06-14 16:54:50 -07004296 for (i = 0; i < MAX_OCTEON_LINKS; i++)
4297 oct->props[i].gmxport = -1;
4298
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004299 retval = setup_nic_devices(oct);
4300 if (retval) {
4301 dev_err(&oct->pci_dev->dev, "Setup NIC devices failed\n");
4302 goto octnet_init_failure;
4303 }
4304
4305 liquidio_ptp_init(oct);
4306
4307 /* Initialize interrupt moderation params */
4308 intrmod_cfg = &((struct octeon_device *)oct)->intrmod;
Raghu Vatsavayi78e6a9b2016-06-21 22:53:10 -07004309 intrmod_cfg->rx_enable = 1;
Raghu Vatsavayi30136392016-09-01 11:16:11 -07004310 intrmod_cfg->check_intrvl = LIO_INTRMOD_CHECK_INTERVAL;
Raghu Vatsavayi78e6a9b2016-06-21 22:53:10 -07004311 intrmod_cfg->maxpkt_ratethr = LIO_INTRMOD_MAXPKT_RATETHR;
4312 intrmod_cfg->minpkt_ratethr = LIO_INTRMOD_MINPKT_RATETHR;
4313 intrmod_cfg->rx_maxcnt_trigger = LIO_INTRMOD_RXMAXCNT_TRIGGER;
4314 intrmod_cfg->rx_maxtmr_trigger = LIO_INTRMOD_RXMAXTMR_TRIGGER;
4315 intrmod_cfg->rx_mintmr_trigger = LIO_INTRMOD_RXMINTMR_TRIGGER;
4316 intrmod_cfg->rx_mincnt_trigger = LIO_INTRMOD_RXMINCNT_TRIGGER;
4317 intrmod_cfg->tx_enable = 1;
4318 intrmod_cfg->tx_maxcnt_trigger = LIO_INTRMOD_TXMAXCNT_TRIGGER;
4319 intrmod_cfg->tx_mincnt_trigger = LIO_INTRMOD_TXMINCNT_TRIGGER;
4320 intrmod_cfg->rx_frames = CFG_GET_OQ_INTR_PKT(octeon_get_conf(oct));
4321 intrmod_cfg->rx_usecs = CFG_GET_OQ_INTR_TIME(octeon_get_conf(oct));
Raghu Vatsavayi5b823512016-09-01 11:16:07 -07004322 intrmod_cfg->tx_frames = CFG_GET_IQ_INTR_PKT(octeon_get_conf(oct));
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004323 dev_dbg(&oct->pci_dev->dev, "Network interfaces ready\n");
4324
4325 return retval;
4326
4327octnet_init_failure:
4328
4329 oct->ifcount = 0;
4330
4331 return retval;
4332}
4333
4334/**
4335 * \brief starter callback that invokes the remaining initialization work after
4336 * the NIC is up and running.
4337 * @param octptr work struct work_struct
4338 */
4339static void nic_starter(struct work_struct *work)
4340{
4341 struct octeon_device *oct;
4342 struct cavium_wk *wk = (struct cavium_wk *)work;
4343
4344 oct = (struct octeon_device *)wk->ctxptr;
4345
4346 if (atomic_read(&oct->status) == OCT_DEV_RUNNING)
4347 return;
4348
4349 /* If the status of the device is CORE_OK, the core
4350 * application has reported its application type. Call
4351 * any registered handlers now and move to the RUNNING
4352 * state.
4353 */
4354 if (atomic_read(&oct->status) != OCT_DEV_CORE_OK) {
4355 schedule_delayed_work(&oct->nic_poll_work.work,
4356 LIQUIDIO_STARTER_POLL_INTERVAL_MS);
4357 return;
4358 }
4359
4360 atomic_set(&oct->status, OCT_DEV_RUNNING);
4361
4362 if (oct->app_mode && oct->app_mode == CVM_DRV_NIC_APP) {
4363 dev_dbg(&oct->pci_dev->dev, "Starting NIC module\n");
4364
4365 if (liquidio_init_nic_module(oct))
4366 dev_err(&oct->pci_dev->dev, "NIC initialization failed\n");
4367 else
4368 handshake[oct->octeon_id].started_ok = 1;
4369 } else {
4370 dev_err(&oct->pci_dev->dev,
4371 "Unexpected application running on NIC (%d). Check firmware.\n",
4372 oct->app_mode);
4373 }
4374
4375 complete(&handshake[oct->octeon_id].started);
4376}
4377
Raghu Vatsavayi86dea552016-11-14 15:54:43 -08004378static int
4379octeon_recv_vf_drv_notice(struct octeon_recv_info *recv_info, void *buf)
4380{
4381 struct octeon_device *oct = (struct octeon_device *)buf;
4382 struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt;
4383 int i, notice, vf_idx;
4384 u64 *data, vf_num;
4385
4386 notice = recv_pkt->rh.r.ossp;
4387 data = (u64 *)get_rbd(recv_pkt->buffer_ptr[0]);
4388
4389 /* the first 64-bit word of data is the vf_num */
4390 vf_num = data[0];
4391 octeon_swap_8B_data(&vf_num, 1);
4392 vf_idx = (int)vf_num - 1;
4393
4394 if (notice == VF_DRV_LOADED) {
4395 if (!(oct->sriov_info.vf_drv_loaded_mask & BIT_ULL(vf_idx))) {
4396 oct->sriov_info.vf_drv_loaded_mask |= BIT_ULL(vf_idx);
4397 dev_info(&oct->pci_dev->dev,
4398 "driver for VF%d was loaded\n", vf_idx);
4399 try_module_get(THIS_MODULE);
4400 }
4401 } else if (notice == VF_DRV_REMOVED) {
4402 if (oct->sriov_info.vf_drv_loaded_mask & BIT_ULL(vf_idx)) {
4403 oct->sriov_info.vf_drv_loaded_mask &= ~BIT_ULL(vf_idx);
4404 dev_info(&oct->pci_dev->dev,
4405 "driver for VF%d was removed\n", vf_idx);
4406 module_put(THIS_MODULE);
4407 }
4408 } else if (notice == VF_DRV_MACADDR_CHANGED) {
4409 u8 *b = (u8 *)&data[1];
4410
4411 oct->sriov_info.vf_macaddr[vf_idx] = data[1];
4412 dev_info(&oct->pci_dev->dev,
4413 "VF driver changed VF%d's MAC address to %pM\n",
4414 vf_idx, b + 2);
4415 }
4416
4417 for (i = 0; i < recv_pkt->buffer_count; i++)
4418 recv_buffer_free(recv_pkt->buffer_ptr[i]);
4419 octeon_free_recv_info(recv_info);
4420
4421 return 0;
4422}
4423
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004424/**
4425 * \brief Device initialization for each Octeon device that is probed
4426 * @param octeon_dev octeon device
4427 */
4428static int octeon_device_init(struct octeon_device *octeon_dev)
4429{
4430 int j, ret;
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004431 int fw_loaded = 0;
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07004432 char bootcmd[] = "\n";
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004433 struct octeon_device_priv *oct_priv =
4434 (struct octeon_device_priv *)octeon_dev->priv;
4435 atomic_set(&octeon_dev->status, OCT_DEV_BEGIN_STATE);
4436
4437 /* Enable access to the octeon device and make its DMA capability
4438 * known to the OS.
4439 */
4440 if (octeon_pci_os_setup(octeon_dev))
4441 return 1;
4442
Raghu Vatsavayi515e7522016-11-14 15:54:44 -08004443 atomic_set(&octeon_dev->status, OCT_DEV_PCI_ENABLE_DONE);
4444
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004445 /* Identify the Octeon type and map the BAR address space. */
4446 if (octeon_chip_specific_setup(octeon_dev)) {
4447 dev_err(&octeon_dev->pci_dev->dev, "Chip specific setup failed\n");
4448 return 1;
4449 }
4450
4451 atomic_set(&octeon_dev->status, OCT_DEV_PCI_MAP_DONE);
4452
4453 octeon_dev->app_mode = CVM_DRV_INVALID_APP;
4454
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004455 if (OCTEON_CN23XX_PF(octeon_dev)) {
4456 if (!cn23xx_fw_loaded(octeon_dev)) {
4457 fw_loaded = 0;
4458 /* Do a soft reset of the Octeon device. */
4459 if (octeon_dev->fn_list.soft_reset(octeon_dev))
4460 return 1;
4461 /* things might have changed */
4462 if (!cn23xx_fw_loaded(octeon_dev))
4463 fw_loaded = 0;
4464 else
4465 fw_loaded = 1;
4466 } else {
4467 fw_loaded = 1;
4468 }
4469 } else if (octeon_dev->fn_list.soft_reset(octeon_dev)) {
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004470 return 1;
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004471 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004472
4473 /* Initialize the dispatch mechanism used to push packets arriving on
4474 * Octeon Output queues.
4475 */
4476 if (octeon_init_dispatch_list(octeon_dev))
4477 return 1;
4478
4479 octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC,
4480 OPCODE_NIC_CORE_DRV_ACTIVE,
4481 octeon_core_drv_init,
4482 octeon_dev);
4483
Raghu Vatsavayi86dea552016-11-14 15:54:43 -08004484 octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC,
4485 OPCODE_NIC_VF_DRV_NOTICE,
4486 octeon_recv_vf_drv_notice, octeon_dev);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004487 INIT_DELAYED_WORK(&octeon_dev->nic_poll_work.work, nic_starter);
4488 octeon_dev->nic_poll_work.ctxptr = (void *)octeon_dev;
4489 schedule_delayed_work(&octeon_dev->nic_poll_work.work,
4490 LIQUIDIO_STARTER_POLL_INTERVAL_MS);
4491
4492 atomic_set(&octeon_dev->status, OCT_DEV_DISPATCH_INIT_DONE);
4493
Raghu Vatsavayic865cdf2016-11-28 16:54:36 -08004494 if (octeon_set_io_queues_off(octeon_dev)) {
4495 dev_err(&octeon_dev->pci_dev->dev, "setting io queues off failed\n");
4496 return 1;
4497 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004498
Raghu Vatsavayi3451b972016-08-31 11:03:26 -07004499 if (OCTEON_CN23XX_PF(octeon_dev)) {
4500 ret = octeon_dev->fn_list.setup_device_regs(octeon_dev);
4501 if (ret) {
4502 dev_err(&octeon_dev->pci_dev->dev, "OCTEON: Failed to configure device registers\n");
4503 return ret;
4504 }
4505 }
4506
4507 /* Initialize soft command buffer pool
4508 */
4509 if (octeon_setup_sc_buffer_pool(octeon_dev)) {
4510 dev_err(&octeon_dev->pci_dev->dev, "sc buffer pool allocation failed\n");
4511 return 1;
4512 }
4513 atomic_set(&octeon_dev->status, OCT_DEV_SC_BUFF_POOL_INIT_DONE);
4514
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004515 /* Setup the data structures that manage this Octeon's Input queues. */
4516 if (octeon_setup_instr_queues(octeon_dev)) {
4517 dev_err(&octeon_dev->pci_dev->dev,
4518 "instruction queue initialization failed\n");
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004519 return 1;
4520 }
4521 atomic_set(&octeon_dev->status, OCT_DEV_INSTR_QUEUE_INIT_DONE);
4522
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004523 /* Initialize lists to manage the requests of different types that
4524 * arrive from user & kernel applications for this octeon device.
4525 */
4526 if (octeon_setup_response_list(octeon_dev)) {
4527 dev_err(&octeon_dev->pci_dev->dev, "Response list allocation failed\n");
4528 return 1;
4529 }
4530 atomic_set(&octeon_dev->status, OCT_DEV_RESP_LIST_INIT_DONE);
4531
4532 if (octeon_setup_output_queues(octeon_dev)) {
4533 dev_err(&octeon_dev->pci_dev->dev, "Output queue initialization failed\n");
Raghu Vatsavayi1e0d30f2016-07-03 13:56:52 -07004534 return 1;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004535 }
4536
4537 atomic_set(&octeon_dev->status, OCT_DEV_DROQ_INIT_DONE);
4538
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07004539 if (OCTEON_CN23XX_PF(octeon_dev)) {
Raghu Vatsavayi5d655562016-11-14 15:54:42 -08004540 if (octeon_dev->fn_list.setup_mbox(octeon_dev)) {
4541 dev_err(&octeon_dev->pci_dev->dev, "OCTEON: Mailbox setup failed\n");
4542 return 1;
4543 }
4544 atomic_set(&octeon_dev->status, OCT_DEV_MBOX_SETUP_DONE);
4545
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07004546 if (octeon_allocate_ioq_vector(octeon_dev)) {
4547 dev_err(&octeon_dev->pci_dev->dev, "OCTEON: ioq vector allocation failed\n");
4548 return 1;
4549 }
Raghu Vatsavayi515e7522016-11-14 15:54:44 -08004550 atomic_set(&octeon_dev->status, OCT_DEV_MSIX_ALLOC_VECTOR_DONE);
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07004551
4552 } else {
4553 /* The input and output queue registers were setup earlier (the
4554 * queues were not enabled). Any additional registers
4555 * that need to be programmed should be done now.
4556 */
4557 ret = octeon_dev->fn_list.setup_device_regs(octeon_dev);
4558 if (ret) {
4559 dev_err(&octeon_dev->pci_dev->dev,
4560 "Failed to configure device registers\n");
4561 return ret;
4562 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004563 }
4564
4565 /* Initialize the tasklet that handles output queue packet processing.*/
4566 dev_dbg(&octeon_dev->pci_dev->dev, "Initializing droq tasklet\n");
4567 tasklet_init(&oct_priv->droq_tasklet, octeon_droq_bh,
4568 (unsigned long)octeon_dev);
4569
4570 /* Setup the interrupt handler and record the INT SUM register address
4571 */
Raghu Vatsavayi1e0d30f2016-07-03 13:56:52 -07004572 if (octeon_setup_interrupt(octeon_dev))
4573 return 1;
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004574
4575 /* Enable Octeon device interrupts */
Raghu Vatsavayi5b07aee2016-08-31 11:03:28 -07004576 octeon_dev->fn_list.enable_interrupt(octeon_dev, OCTEON_ALL_INTR);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004577
Raghu Vatsavayi515e7522016-11-14 15:54:44 -08004578 atomic_set(&octeon_dev->status, OCT_DEV_INTR_SET_DONE);
4579
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004580 /* Enable the input and output queues for this Octeon device */
Raghu Vatsavayi1b7c55c2016-08-31 11:03:27 -07004581 ret = octeon_dev->fn_list.enable_io_queues(octeon_dev);
4582 if (ret) {
4583 dev_err(&octeon_dev->pci_dev->dev, "Failed to enable input/output queues");
4584 return ret;
4585 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004586
4587 atomic_set(&octeon_dev->status, OCT_DEV_IO_QUEUES_DONE);
4588
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004589 if ((!OCTEON_CN23XX_PF(octeon_dev)) || !fw_loaded) {
4590 dev_dbg(&octeon_dev->pci_dev->dev, "Waiting for DDR initialization...\n");
4591 if (!ddr_timeout) {
4592 dev_info(&octeon_dev->pci_dev->dev,
4593 "WAITING. Set ddr_timeout to non-zero value to proceed with initialization.\n");
4594 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004595
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004596 schedule_timeout_uninterruptible(HZ * LIO_RESET_SECS);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004597
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004598 /* Wait for the octeon to initialize DDR after the soft-reset.*/
4599 while (!ddr_timeout) {
4600 set_current_state(TASK_INTERRUPTIBLE);
4601 if (schedule_timeout(HZ / 10)) {
4602 /* user probably pressed Control-C */
4603 return 1;
4604 }
4605 }
4606 ret = octeon_wait_for_ddr_init(octeon_dev, &ddr_timeout);
4607 if (ret) {
4608 dev_err(&octeon_dev->pci_dev->dev,
4609 "DDR not initialized. Please confirm that board is configured to boot from Flash, ret: %d\n",
4610 ret);
Raghu Vatsavayi4b129ae2016-06-21 22:53:15 -07004611 return 1;
4612 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004613
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004614 if (octeon_wait_for_bootloader(octeon_dev, 1000)) {
4615 dev_err(&octeon_dev->pci_dev->dev, "Board not responding\n");
4616 return 1;
4617 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004618
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004619 /* Divert uboot to take commands from host instead. */
4620 ret = octeon_console_send_cmd(octeon_dev, bootcmd, 50);
Raghu Vatsavayid3d7e6c2016-06-21 22:53:07 -07004621
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004622 dev_dbg(&octeon_dev->pci_dev->dev, "Initializing consoles\n");
4623 ret = octeon_init_consoles(octeon_dev);
4624 if (ret) {
4625 dev_err(&octeon_dev->pci_dev->dev, "Could not access board consoles\n");
4626 return 1;
4627 }
4628 ret = octeon_add_console(octeon_dev, 0);
4629 if (ret) {
4630 dev_err(&octeon_dev->pci_dev->dev, "Could not access board console\n");
4631 return 1;
4632 }
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004633
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004634 atomic_set(&octeon_dev->status, OCT_DEV_CONSOLE_INIT_DONE);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004635
Raghu Vatsavayic0eab5b2016-08-31 11:03:29 -07004636 dev_dbg(&octeon_dev->pci_dev->dev, "Loading firmware\n");
4637 ret = load_firmware(octeon_dev);
4638 if (ret) {
4639 dev_err(&octeon_dev->pci_dev->dev, "Could not load firmware to board\n");
4640 return 1;
4641 }
4642 /* set bit 1 of SLI_SCRATCH_1 to indicate that firmware is
4643 * loaded
4644 */
4645 if (OCTEON_CN23XX_PF(octeon_dev))
4646 octeon_write_csr64(octeon_dev, CN23XX_SLI_SCRATCH1,
4647 2ULL);
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004648 }
4649
4650 handshake[octeon_dev->octeon_id].init_ok = 1;
4651 complete(&handshake[octeon_dev->octeon_id].init);
4652
4653 atomic_set(&octeon_dev->status, OCT_DEV_HOST_OK);
4654
4655 /* Send Credit for Octeon Output queues. Credits are always sent after
4656 * the output queue is enabled.
4657 */
4658 for (j = 0; j < octeon_dev->num_oqs; j++)
4659 writel(octeon_dev->droq[j]->max_count,
4660 octeon_dev->droq[j]->pkts_credit_reg);
4661
4662 /* Packets can start arriving on the output queues from this point. */
Raghu Vatsavayif21fb3e2015-06-09 18:15:23 -07004663 return 0;
4664}
4665
4666/**
4667 * \brief Exits the module
4668 */
4669static void __exit liquidio_exit(void)
4670{
4671 liquidio_deinit_pci();
4672
4673 pr_info("LiquidIO network module is now unloaded\n");
4674}
4675
4676module_init(liquidio_init);
4677module_exit(liquidio_exit);