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1 | /********************************************************************** |
2 | * Author: Cavium, Inc. | |
3 | * | |
4 | * Contact: support@cavium.com | |
5 | * Please include "LiquidIO" in the subject. | |
6 | * | |
7 | * Copyright (c) 2003-2015 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 | |
17 | * details. | |
18 | * | |
19 | * This file may also be available under a different license from Cavium. | |
20 | * Contact Cavium, Inc. for more information | |
21 | **********************************************************************/ | |
22 | #include <linux/version.h> | |
23 | #include <linux/module.h> | |
24 | #include <linux/crc32.h> | |
25 | #include <linux/dma-mapping.h> | |
26 | #include <linux/pci.h> | |
27 | #include <linux/pci_ids.h> | |
28 | #include <linux/ip.h> | |
5b173cf9 | 29 | #include <net/ip.h> |
f21fb3ed RV |
30 | #include <linux/ipv6.h> |
31 | #include <linux/net_tstamp.h> | |
32 | #include <linux/if_vlan.h> | |
33 | #include <linux/firmware.h> | |
34 | #include <linux/ethtool.h> | |
35 | #include <linux/ptp_clock_kernel.h> | |
36 | #include <linux/types.h> | |
37 | #include <linux/list.h> | |
38 | #include <linux/workqueue.h> | |
39 | #include <linux/interrupt.h> | |
40 | #include "octeon_config.h" | |
41 | #include "liquidio_common.h" | |
42 | #include "octeon_droq.h" | |
43 | #include "octeon_iq.h" | |
44 | #include "response_manager.h" | |
45 | #include "octeon_device.h" | |
46 | #include "octeon_nic.h" | |
47 | #include "octeon_main.h" | |
48 | #include "octeon_network.h" | |
49 | #include "cn66xx_regs.h" | |
50 | #include "cn66xx_device.h" | |
51 | #include "cn68xx_regs.h" | |
52 | #include "cn68xx_device.h" | |
53 | #include "liquidio_image.h" | |
54 | ||
55 | MODULE_AUTHOR("Cavium Networks, <support@cavium.com>"); | |
56 | MODULE_DESCRIPTION("Cavium LiquidIO Intelligent Server Adapter Driver"); | |
57 | MODULE_LICENSE("GPL"); | |
58 | MODULE_VERSION(LIQUIDIO_VERSION); | |
59 | MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_210SV_NAME LIO_FW_NAME_SUFFIX); | |
60 | MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_210NV_NAME LIO_FW_NAME_SUFFIX); | |
61 | MODULE_FIRMWARE(LIO_FW_DIR LIO_FW_BASE_NAME LIO_410NV_NAME LIO_FW_NAME_SUFFIX); | |
62 | ||
63 | static int ddr_timeout = 10000; | |
64 | module_param(ddr_timeout, int, 0644); | |
65 | MODULE_PARM_DESC(ddr_timeout, | |
66 | "Number of milliseconds to wait for DDR initialization. 0 waits for ddr_timeout to be set to non-zero value before starting to check"); | |
67 | ||
68 | static u32 console_bitmask; | |
69 | module_param(console_bitmask, int, 0644); | |
70 | MODULE_PARM_DESC(console_bitmask, | |
71 | "Bitmask indicating which consoles have debug output redirected to syslog."); | |
72 | ||
73 | #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK) | |
74 | ||
75 | static int debug = -1; | |
76 | module_param(debug, int, 0644); | |
77 | MODULE_PARM_DESC(debug, "NETIF_MSG debug bits"); | |
78 | ||
79 | static char fw_type[LIO_MAX_FW_TYPE_LEN]; | |
80 | module_param_string(fw_type, fw_type, sizeof(fw_type), 0000); | |
81 | MODULE_PARM_DESC(fw_type, "Type of firmware to be loaded. Default \"nic\""); | |
82 | ||
83 | static int conf_type; | |
84 | module_param(conf_type, int, 0); | |
85 | MODULE_PARM_DESC(conf_type, "select octeon configuration 0 default 1 ovs"); | |
86 | ||
87 | /* Bit mask values for lio->ifstate */ | |
88 | #define LIO_IFSTATE_DROQ_OPS 0x01 | |
89 | #define LIO_IFSTATE_REGISTERED 0x02 | |
90 | #define LIO_IFSTATE_RUNNING 0x04 | |
91 | #define LIO_IFSTATE_RX_TIMESTAMP_ENABLED 0x08 | |
92 | ||
93 | /* Polling interval for determining when NIC application is alive */ | |
94 | #define LIQUIDIO_STARTER_POLL_INTERVAL_MS 100 | |
95 | ||
96 | /* runtime link query interval */ | |
97 | #define LIQUIDIO_LINK_QUERY_INTERVAL_MS 1000 | |
98 | ||
99 | struct liquidio_if_cfg_context { | |
100 | int octeon_id; | |
101 | ||
102 | wait_queue_head_t wc; | |
103 | ||
104 | int cond; | |
105 | }; | |
106 | ||
107 | struct liquidio_if_cfg_resp { | |
108 | u64 rh; | |
109 | struct liquidio_if_cfg_info cfg_info; | |
110 | u64 status; | |
111 | }; | |
112 | ||
113 | struct oct_link_status_resp { | |
114 | u64 rh; | |
115 | struct oct_link_info link_info; | |
116 | u64 status; | |
117 | }; | |
118 | ||
119 | struct oct_timestamp_resp { | |
120 | u64 rh; | |
121 | u64 timestamp; | |
122 | u64 status; | |
123 | }; | |
124 | ||
125 | #define OCT_TIMESTAMP_RESP_SIZE (sizeof(struct oct_timestamp_resp)) | |
126 | ||
127 | union tx_info { | |
128 | u64 u64; | |
129 | struct { | |
130 | #ifdef __BIG_ENDIAN_BITFIELD | |
131 | u16 gso_size; | |
132 | u16 gso_segs; | |
133 | u32 reserved; | |
134 | #else | |
135 | u32 reserved; | |
136 | u16 gso_segs; | |
137 | u16 gso_size; | |
138 | #endif | |
139 | } s; | |
140 | }; | |
141 | ||
142 | /** Octeon device properties to be used by the NIC module. | |
143 | * Each octeon device in the system will be represented | |
144 | * by this structure in the NIC module. | |
145 | */ | |
146 | ||
147 | #define OCTNIC_MAX_SG (MAX_SKB_FRAGS) | |
148 | ||
149 | #define OCTNIC_GSO_MAX_HEADER_SIZE 128 | |
150 | #define OCTNIC_GSO_MAX_SIZE (GSO_MAX_SIZE - OCTNIC_GSO_MAX_HEADER_SIZE) | |
151 | ||
152 | /** Structure of a node in list of gather components maintained by | |
153 | * NIC driver for each network device. | |
154 | */ | |
155 | struct octnic_gather { | |
156 | /** List manipulation. Next and prev pointers. */ | |
157 | struct list_head list; | |
158 | ||
159 | /** Size of the gather component at sg in bytes. */ | |
160 | int sg_size; | |
161 | ||
162 | /** Number of bytes that sg was adjusted to make it 8B-aligned. */ | |
163 | int adjust; | |
164 | ||
165 | /** Gather component that can accommodate max sized fragment list | |
166 | * received from the IP layer. | |
167 | */ | |
168 | struct octeon_sg_entry *sg; | |
169 | }; | |
170 | ||
171 | /** This structure is used by NIC driver to store information required | |
172 | * to free the sk_buff when the packet has been fetched by Octeon. | |
173 | * Bytes offset below assume worst-case of a 64-bit system. | |
174 | */ | |
175 | struct octnet_buf_free_info { | |
176 | /** Bytes 1-8. Pointer to network device private structure. */ | |
177 | struct lio *lio; | |
178 | ||
179 | /** Bytes 9-16. Pointer to sk_buff. */ | |
180 | struct sk_buff *skb; | |
181 | ||
182 | /** Bytes 17-24. Pointer to gather list. */ | |
183 | struct octnic_gather *g; | |
184 | ||
185 | /** Bytes 25-32. Physical address of skb->data or gather list. */ | |
186 | u64 dptr; | |
187 | ||
188 | /** Bytes 33-47. Piggybacked soft command, if any */ | |
189 | struct octeon_soft_command *sc; | |
190 | }; | |
191 | ||
192 | struct handshake { | |
193 | struct completion init; | |
194 | struct completion started; | |
195 | struct pci_dev *pci_dev; | |
196 | int init_ok; | |
197 | int started_ok; | |
198 | }; | |
199 | ||
200 | struct octeon_device_priv { | |
201 | /** Tasklet structures for this device. */ | |
202 | struct tasklet_struct droq_tasklet; | |
203 | unsigned long napi_mask; | |
204 | }; | |
205 | ||
206 | static int octeon_device_init(struct octeon_device *); | |
207 | static void liquidio_remove(struct pci_dev *pdev); | |
208 | static int liquidio_probe(struct pci_dev *pdev, | |
209 | const struct pci_device_id *ent); | |
210 | ||
211 | static struct handshake handshake[MAX_OCTEON_DEVICES]; | |
212 | static struct completion first_stage; | |
213 | ||
5b173cf9 | 214 | static void octeon_droq_bh(unsigned long pdev) |
f21fb3ed RV |
215 | { |
216 | int q_no; | |
217 | int reschedule = 0; | |
218 | struct octeon_device *oct = (struct octeon_device *)pdev; | |
219 | struct octeon_device_priv *oct_priv = | |
220 | (struct octeon_device_priv *)oct->priv; | |
221 | ||
222 | /* for (q_no = 0; q_no < oct->num_oqs; q_no++) { */ | |
223 | for (q_no = 0; q_no < MAX_OCTEON_OUTPUT_QUEUES; q_no++) { | |
224 | if (!(oct->io_qmask.oq & (1UL << q_no))) | |
225 | continue; | |
226 | reschedule |= octeon_droq_process_packets(oct, oct->droq[q_no], | |
227 | MAX_PACKET_BUDGET); | |
228 | } | |
229 | ||
230 | if (reschedule) | |
231 | tasklet_schedule(&oct_priv->droq_tasklet); | |
232 | } | |
233 | ||
5b173cf9 | 234 | static int lio_wait_for_oq_pkts(struct octeon_device *oct) |
f21fb3ed RV |
235 | { |
236 | struct octeon_device_priv *oct_priv = | |
237 | (struct octeon_device_priv *)oct->priv; | |
238 | int retry = 100, pkt_cnt = 0, pending_pkts = 0; | |
239 | int i; | |
240 | ||
241 | do { | |
242 | pending_pkts = 0; | |
243 | ||
244 | for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES; i++) { | |
245 | if (!(oct->io_qmask.oq & (1UL << i))) | |
246 | continue; | |
247 | pkt_cnt += octeon_droq_check_hw_for_pkts(oct, | |
248 | oct->droq[i]); | |
249 | } | |
250 | if (pkt_cnt > 0) { | |
251 | pending_pkts += pkt_cnt; | |
252 | tasklet_schedule(&oct_priv->droq_tasklet); | |
253 | } | |
254 | pkt_cnt = 0; | |
255 | schedule_timeout_uninterruptible(1); | |
256 | ||
257 | } while (retry-- && pending_pkts); | |
258 | ||
259 | return pkt_cnt; | |
260 | } | |
261 | ||
262 | void octeon_report_tx_completion_to_bql(void *txq, unsigned int pkts_compl, | |
263 | unsigned int bytes_compl) | |
264 | { | |
265 | struct netdev_queue *netdev_queue = txq; | |
266 | ||
267 | netdev_tx_completed_queue(netdev_queue, pkts_compl, bytes_compl); | |
268 | } | |
269 | ||
270 | void octeon_update_tx_completion_counters(void *buf, int reqtype, | |
271 | unsigned int *pkts_compl, | |
272 | unsigned int *bytes_compl) | |
273 | { | |
274 | struct octnet_buf_free_info *finfo; | |
275 | struct sk_buff *skb = NULL; | |
276 | struct octeon_soft_command *sc; | |
277 | ||
278 | switch (reqtype) { | |
279 | case REQTYPE_NORESP_NET: | |
280 | case REQTYPE_NORESP_NET_SG: | |
281 | finfo = buf; | |
282 | skb = finfo->skb; | |
283 | break; | |
284 | ||
285 | case REQTYPE_RESP_NET_SG: | |
286 | case REQTYPE_RESP_NET: | |
287 | sc = buf; | |
288 | skb = sc->callback_arg; | |
289 | break; | |
290 | ||
291 | default: | |
292 | return; | |
293 | } | |
294 | ||
295 | (*pkts_compl)++; | |
296 | *bytes_compl += skb->len; | |
297 | } | |
298 | ||
299 | void octeon_report_sent_bytes_to_bql(void *buf, int reqtype) | |
300 | { | |
301 | struct octnet_buf_free_info *finfo; | |
302 | struct sk_buff *skb; | |
303 | struct octeon_soft_command *sc; | |
304 | struct netdev_queue *txq; | |
305 | ||
306 | switch (reqtype) { | |
307 | case REQTYPE_NORESP_NET: | |
308 | case REQTYPE_NORESP_NET_SG: | |
309 | finfo = buf; | |
310 | skb = finfo->skb; | |
311 | break; | |
312 | ||
313 | case REQTYPE_RESP_NET_SG: | |
314 | case REQTYPE_RESP_NET: | |
315 | sc = buf; | |
316 | skb = sc->callback_arg; | |
317 | break; | |
318 | ||
319 | default: | |
320 | return; | |
321 | } | |
322 | ||
323 | txq = netdev_get_tx_queue(skb->dev, skb_get_queue_mapping(skb)); | |
324 | netdev_tx_sent_queue(txq, skb->len); | |
325 | } | |
326 | ||
327 | int octeon_console_debug_enabled(u32 console) | |
328 | { | |
329 | return (console_bitmask >> (console)) & 0x1; | |
330 | } | |
331 | ||
332 | /** | |
333 | * \brief Forces all IO queues off on a given device | |
334 | * @param oct Pointer to Octeon device | |
335 | */ | |
336 | static void force_io_queues_off(struct octeon_device *oct) | |
337 | { | |
338 | if ((oct->chip_id == OCTEON_CN66XX) || | |
339 | (oct->chip_id == OCTEON_CN68XX)) { | |
340 | /* Reset the Enable bits for Input Queues. */ | |
341 | octeon_write_csr(oct, CN6XXX_SLI_PKT_INSTR_ENB, 0); | |
342 | ||
343 | /* Reset the Enable bits for Output Queues. */ | |
344 | octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_ENB, 0); | |
345 | } | |
346 | } | |
347 | ||
348 | /** | |
349 | * \brief wait for all pending requests to complete | |
350 | * @param oct Pointer to Octeon device | |
351 | * | |
352 | * Called during shutdown sequence | |
353 | */ | |
354 | static int wait_for_pending_requests(struct octeon_device *oct) | |
355 | { | |
356 | int i, pcount = 0; | |
357 | ||
358 | for (i = 0; i < 100; i++) { | |
359 | pcount = | |
360 | atomic_read(&oct->response_list | |
361 | [OCTEON_ORDERED_SC_LIST].pending_req_count); | |
362 | if (pcount) | |
363 | schedule_timeout_uninterruptible(HZ / 10); | |
364 | else | |
365 | break; | |
366 | } | |
367 | ||
368 | if (pcount) | |
369 | return 1; | |
370 | ||
371 | return 0; | |
372 | } | |
373 | ||
374 | /** | |
375 | * \brief Cause device to go quiet so it can be safely removed/reset/etc | |
376 | * @param oct Pointer to Octeon device | |
377 | */ | |
378 | static inline void pcierror_quiesce_device(struct octeon_device *oct) | |
379 | { | |
380 | int i; | |
381 | ||
382 | /* Disable the input and output queues now. No more packets will | |
383 | * arrive from Octeon, but we should wait for all packet processing | |
384 | * to finish. | |
385 | */ | |
386 | force_io_queues_off(oct); | |
387 | ||
388 | /* To allow for in-flight requests */ | |
389 | schedule_timeout_uninterruptible(100); | |
390 | ||
391 | if (wait_for_pending_requests(oct)) | |
392 | dev_err(&oct->pci_dev->dev, "There were pending requests\n"); | |
393 | ||
394 | /* Force all requests waiting to be fetched by OCTEON to complete. */ | |
395 | for (i = 0; i < MAX_OCTEON_INSTR_QUEUES; i++) { | |
396 | struct octeon_instr_queue *iq; | |
397 | ||
398 | if (!(oct->io_qmask.iq & (1UL << i))) | |
399 | continue; | |
400 | iq = oct->instr_queue[i]; | |
401 | ||
402 | if (atomic_read(&iq->instr_pending)) { | |
403 | spin_lock_bh(&iq->lock); | |
404 | iq->fill_cnt = 0; | |
405 | iq->octeon_read_index = iq->host_write_index; | |
406 | iq->stats.instr_processed += | |
407 | atomic_read(&iq->instr_pending); | |
408 | lio_process_iq_request_list(oct, iq); | |
409 | spin_unlock_bh(&iq->lock); | |
410 | } | |
411 | } | |
412 | ||
413 | /* Force all pending ordered list requests to time out. */ | |
414 | lio_process_ordered_list(oct, 1); | |
415 | ||
416 | /* We do not need to wait for output queue packets to be processed. */ | |
417 | } | |
418 | ||
419 | /** | |
420 | * \brief Cleanup PCI AER uncorrectable error status | |
421 | * @param dev Pointer to PCI device | |
422 | */ | |
423 | static void cleanup_aer_uncorrect_error_status(struct pci_dev *dev) | |
424 | { | |
425 | int pos = 0x100; | |
426 | u32 status, mask; | |
427 | ||
428 | pr_info("%s :\n", __func__); | |
429 | ||
430 | pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, &status); | |
431 | pci_read_config_dword(dev, pos + PCI_ERR_UNCOR_SEVER, &mask); | |
432 | if (dev->error_state == pci_channel_io_normal) | |
433 | status &= ~mask; /* Clear corresponding nonfatal bits */ | |
434 | else | |
435 | status &= mask; /* Clear corresponding fatal bits */ | |
436 | pci_write_config_dword(dev, pos + PCI_ERR_UNCOR_STATUS, status); | |
437 | } | |
438 | ||
439 | /** | |
440 | * \brief Stop all PCI IO to a given device | |
441 | * @param dev Pointer to Octeon device | |
442 | */ | |
443 | static void stop_pci_io(struct octeon_device *oct) | |
444 | { | |
445 | /* No more instructions will be forwarded. */ | |
446 | atomic_set(&oct->status, OCT_DEV_IN_RESET); | |
447 | ||
448 | pci_disable_device(oct->pci_dev); | |
449 | ||
450 | /* Disable interrupts */ | |
451 | oct->fn_list.disable_interrupt(oct->chip); | |
452 | ||
453 | pcierror_quiesce_device(oct); | |
454 | ||
455 | /* Release the interrupt line */ | |
456 | free_irq(oct->pci_dev->irq, oct); | |
457 | ||
458 | if (oct->flags & LIO_FLAG_MSI_ENABLED) | |
459 | pci_disable_msi(oct->pci_dev); | |
460 | ||
461 | dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n", | |
462 | lio_get_state_string(&oct->status)); | |
463 | ||
464 | /* cn63xx_cleanup_aer_uncorrect_error_status(oct->pci_dev); */ | |
465 | /* making it a common function for all OCTEON models */ | |
466 | cleanup_aer_uncorrect_error_status(oct->pci_dev); | |
467 | } | |
468 | ||
469 | /** | |
470 | * \brief called when PCI error is detected | |
471 | * @param pdev Pointer to PCI device | |
472 | * @param state The current pci connection state | |
473 | * | |
474 | * This function is called after a PCI bus error affecting | |
475 | * this device has been detected. | |
476 | */ | |
477 | static pci_ers_result_t liquidio_pcie_error_detected(struct pci_dev *pdev, | |
478 | pci_channel_state_t state) | |
479 | { | |
480 | struct octeon_device *oct = pci_get_drvdata(pdev); | |
481 | ||
482 | /* Non-correctable Non-fatal errors */ | |
483 | if (state == pci_channel_io_normal) { | |
484 | dev_err(&oct->pci_dev->dev, "Non-correctable non-fatal error reported:\n"); | |
485 | cleanup_aer_uncorrect_error_status(oct->pci_dev); | |
486 | return PCI_ERS_RESULT_CAN_RECOVER; | |
487 | } | |
488 | ||
489 | /* Non-correctable Fatal errors */ | |
490 | dev_err(&oct->pci_dev->dev, "Non-correctable FATAL reported by PCI AER driver\n"); | |
491 | stop_pci_io(oct); | |
492 | ||
493 | /* Always return a DISCONNECT. There is no support for recovery but only | |
494 | * for a clean shutdown. | |
495 | */ | |
496 | return PCI_ERS_RESULT_DISCONNECT; | |
497 | } | |
498 | ||
499 | /** | |
500 | * \brief mmio handler | |
501 | * @param pdev Pointer to PCI device | |
502 | */ | |
503 | static pci_ers_result_t liquidio_pcie_mmio_enabled(struct pci_dev *pdev) | |
504 | { | |
505 | /* We should never hit this since we never ask for a reset for a Fatal | |
506 | * Error. We always return DISCONNECT in io_error above. | |
507 | * But play safe and return RECOVERED for now. | |
508 | */ | |
509 | return PCI_ERS_RESULT_RECOVERED; | |
510 | } | |
511 | ||
512 | /** | |
513 | * \brief called after the pci bus has been reset. | |
514 | * @param pdev Pointer to PCI device | |
515 | * | |
516 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
517 | * resembles the first-half of the octeon_resume routine. | |
518 | */ | |
519 | static pci_ers_result_t liquidio_pcie_slot_reset(struct pci_dev *pdev) | |
520 | { | |
521 | /* We should never hit this since we never ask for a reset for a Fatal | |
522 | * Error. We always return DISCONNECT in io_error above. | |
523 | * But play safe and return RECOVERED for now. | |
524 | */ | |
525 | return PCI_ERS_RESULT_RECOVERED; | |
526 | } | |
527 | ||
528 | /** | |
529 | * \brief called when traffic can start flowing again. | |
530 | * @param pdev Pointer to PCI device | |
531 | * | |
532 | * This callback is called when the error recovery driver tells us that | |
533 | * its OK to resume normal operation. Implementation resembles the | |
534 | * second-half of the octeon_resume routine. | |
535 | */ | |
536 | static void liquidio_pcie_resume(struct pci_dev *pdev) | |
537 | { | |
538 | /* Nothing to be done here. */ | |
539 | } | |
540 | ||
541 | #ifdef CONFIG_PM | |
542 | /** | |
543 | * \brief called when suspending | |
544 | * @param pdev Pointer to PCI device | |
545 | * @param state state to suspend to | |
546 | */ | |
547 | static int liquidio_suspend(struct pci_dev *pdev, pm_message_t state) | |
548 | { | |
549 | return 0; | |
550 | } | |
551 | ||
552 | /** | |
553 | * \brief called when resuming | |
554 | * @param pdev Pointer to PCI device | |
555 | */ | |
556 | static int liquidio_resume(struct pci_dev *pdev) | |
557 | { | |
558 | return 0; | |
559 | } | |
560 | #endif | |
561 | ||
562 | /* For PCI-E Advanced Error Recovery (AER) Interface */ | |
166e2362 | 563 | static const struct pci_error_handlers liquidio_err_handler = { |
f21fb3ed RV |
564 | .error_detected = liquidio_pcie_error_detected, |
565 | .mmio_enabled = liquidio_pcie_mmio_enabled, | |
566 | .slot_reset = liquidio_pcie_slot_reset, | |
567 | .resume = liquidio_pcie_resume, | |
568 | }; | |
569 | ||
570 | static const struct pci_device_id liquidio_pci_tbl[] = { | |
571 | { /* 68xx */ | |
572 | PCI_VENDOR_ID_CAVIUM, 0x91, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 | |
573 | }, | |
574 | { /* 66xx */ | |
575 | PCI_VENDOR_ID_CAVIUM, 0x92, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 | |
576 | }, | |
577 | { | |
578 | 0, 0, 0, 0, 0, 0, 0 | |
579 | } | |
580 | }; | |
581 | MODULE_DEVICE_TABLE(pci, liquidio_pci_tbl); | |
582 | ||
583 | static struct pci_driver liquidio_pci_driver = { | |
584 | .name = "LiquidIO", | |
585 | .id_table = liquidio_pci_tbl, | |
586 | .probe = liquidio_probe, | |
587 | .remove = liquidio_remove, | |
588 | .err_handler = &liquidio_err_handler, /* For AER */ | |
589 | ||
590 | #ifdef CONFIG_PM | |
591 | .suspend = liquidio_suspend, | |
592 | .resume = liquidio_resume, | |
593 | #endif | |
594 | ||
595 | }; | |
596 | ||
597 | /** | |
598 | * \brief register PCI driver | |
599 | */ | |
600 | static int liquidio_init_pci(void) | |
601 | { | |
602 | return pci_register_driver(&liquidio_pci_driver); | |
603 | } | |
604 | ||
605 | /** | |
606 | * \brief unregister PCI driver | |
607 | */ | |
608 | static void liquidio_deinit_pci(void) | |
609 | { | |
610 | pci_unregister_driver(&liquidio_pci_driver); | |
611 | } | |
612 | ||
613 | /** | |
614 | * \brief check interface state | |
615 | * @param lio per-network private data | |
616 | * @param state_flag flag state to check | |
617 | */ | |
618 | static inline int ifstate_check(struct lio *lio, int state_flag) | |
619 | { | |
620 | return atomic_read(&lio->ifstate) & state_flag; | |
621 | } | |
622 | ||
623 | /** | |
624 | * \brief set interface state | |
625 | * @param lio per-network private data | |
626 | * @param state_flag flag state to set | |
627 | */ | |
628 | static inline void ifstate_set(struct lio *lio, int state_flag) | |
629 | { | |
630 | atomic_set(&lio->ifstate, (atomic_read(&lio->ifstate) | state_flag)); | |
631 | } | |
632 | ||
633 | /** | |
634 | * \brief clear interface state | |
635 | * @param lio per-network private data | |
636 | * @param state_flag flag state to clear | |
637 | */ | |
638 | static inline void ifstate_reset(struct lio *lio, int state_flag) | |
639 | { | |
640 | atomic_set(&lio->ifstate, (atomic_read(&lio->ifstate) & ~(state_flag))); | |
641 | } | |
642 | ||
643 | /** | |
644 | * \brief Stop Tx queues | |
645 | * @param netdev network device | |
646 | */ | |
647 | static inline void txqs_stop(struct net_device *netdev) | |
648 | { | |
649 | if (netif_is_multiqueue(netdev)) { | |
650 | int i; | |
651 | ||
652 | for (i = 0; i < netdev->num_tx_queues; i++) | |
653 | netif_stop_subqueue(netdev, i); | |
654 | } else { | |
655 | netif_stop_queue(netdev); | |
656 | } | |
657 | } | |
658 | ||
659 | /** | |
660 | * \brief Start Tx queues | |
661 | * @param netdev network device | |
662 | */ | |
663 | static inline void txqs_start(struct net_device *netdev) | |
664 | { | |
665 | if (netif_is_multiqueue(netdev)) { | |
666 | int i; | |
667 | ||
668 | for (i = 0; i < netdev->num_tx_queues; i++) | |
669 | netif_start_subqueue(netdev, i); | |
670 | } else { | |
671 | netif_start_queue(netdev); | |
672 | } | |
673 | } | |
674 | ||
675 | /** | |
676 | * \brief Wake Tx queues | |
677 | * @param netdev network device | |
678 | */ | |
679 | static inline void txqs_wake(struct net_device *netdev) | |
680 | { | |
681 | if (netif_is_multiqueue(netdev)) { | |
682 | int i; | |
683 | ||
684 | for (i = 0; i < netdev->num_tx_queues; i++) | |
685 | netif_wake_subqueue(netdev, i); | |
686 | } else { | |
687 | netif_wake_queue(netdev); | |
688 | } | |
689 | } | |
690 | ||
691 | /** | |
692 | * \brief Stop Tx queue | |
693 | * @param netdev network device | |
694 | */ | |
695 | static void stop_txq(struct net_device *netdev) | |
696 | { | |
697 | txqs_stop(netdev); | |
698 | } | |
699 | ||
700 | /** | |
701 | * \brief Start Tx queue | |
702 | * @param netdev network device | |
703 | */ | |
704 | static void start_txq(struct net_device *netdev) | |
705 | { | |
706 | struct lio *lio = GET_LIO(netdev); | |
707 | ||
708 | if (lio->linfo.link.s.status) { | |
709 | txqs_start(netdev); | |
710 | return; | |
711 | } | |
712 | } | |
713 | ||
714 | /** | |
715 | * \brief Wake a queue | |
716 | * @param netdev network device | |
717 | * @param q which queue to wake | |
718 | */ | |
719 | static inline void wake_q(struct net_device *netdev, int q) | |
720 | { | |
721 | if (netif_is_multiqueue(netdev)) | |
722 | netif_wake_subqueue(netdev, q); | |
723 | else | |
724 | netif_wake_queue(netdev); | |
725 | } | |
726 | ||
727 | /** | |
728 | * \brief Stop a queue | |
729 | * @param netdev network device | |
730 | * @param q which queue to stop | |
731 | */ | |
732 | static inline void stop_q(struct net_device *netdev, int q) | |
733 | { | |
734 | if (netif_is_multiqueue(netdev)) | |
735 | netif_stop_subqueue(netdev, q); | |
736 | else | |
737 | netif_stop_queue(netdev); | |
738 | } | |
739 | ||
740 | /** | |
741 | * \brief Check Tx queue status, and take appropriate action | |
742 | * @param lio per-network private data | |
743 | * @returns 0 if full, number of queues woken up otherwise | |
744 | */ | |
745 | static inline int check_txq_status(struct lio *lio) | |
746 | { | |
747 | int ret_val = 0; | |
748 | ||
749 | if (netif_is_multiqueue(lio->netdev)) { | |
750 | int numqs = lio->netdev->num_tx_queues; | |
751 | int q, iq = 0; | |
752 | ||
753 | /* check each sub-queue state */ | |
754 | for (q = 0; q < numqs; q++) { | |
755 | iq = lio->linfo.txpciq[q & (lio->linfo.num_txpciq - 1)]; | |
756 | if (octnet_iq_is_full(lio->oct_dev, iq)) | |
757 | continue; | |
758 | wake_q(lio->netdev, q); | |
759 | ret_val++; | |
760 | } | |
761 | } else { | |
762 | if (octnet_iq_is_full(lio->oct_dev, lio->txq)) | |
763 | return 0; | |
764 | wake_q(lio->netdev, lio->txq); | |
765 | ret_val = 1; | |
766 | } | |
767 | return ret_val; | |
768 | } | |
769 | ||
770 | /** | |
771 | * Remove the node at the head of the list. The list would be empty at | |
772 | * the end of this call if there are no more nodes in the list. | |
773 | */ | |
774 | static inline struct list_head *list_delete_head(struct list_head *root) | |
775 | { | |
776 | struct list_head *node; | |
777 | ||
778 | if ((root->prev == root) && (root->next == root)) | |
779 | node = NULL; | |
780 | else | |
781 | node = root->next; | |
782 | ||
783 | if (node) | |
784 | list_del(node); | |
785 | ||
786 | return node; | |
787 | } | |
788 | ||
789 | /** | |
790 | * \brief Delete gather list | |
791 | * @param lio per-network private data | |
792 | */ | |
793 | static void delete_glist(struct lio *lio) | |
794 | { | |
795 | struct octnic_gather *g; | |
796 | ||
797 | do { | |
798 | g = (struct octnic_gather *) | |
799 | list_delete_head(&lio->glist); | |
800 | if (g) { | |
801 | if (g->sg) | |
802 | kfree((void *)((unsigned long)g->sg - | |
803 | g->adjust)); | |
804 | kfree(g); | |
805 | } | |
806 | } while (g); | |
807 | } | |
808 | ||
809 | /** | |
810 | * \brief Setup gather list | |
811 | * @param lio per-network private data | |
812 | */ | |
813 | static int setup_glist(struct lio *lio) | |
814 | { | |
815 | int i; | |
816 | struct octnic_gather *g; | |
817 | ||
818 | INIT_LIST_HEAD(&lio->glist); | |
819 | ||
820 | for (i = 0; i < lio->tx_qsize; i++) { | |
ce8e5c70 | 821 | g = kzalloc(sizeof(*g), GFP_KERNEL); |
f21fb3ed RV |
822 | if (!g) |
823 | break; | |
f21fb3ed RV |
824 | |
825 | g->sg_size = | |
826 | ((ROUNDUP4(OCTNIC_MAX_SG) >> 2) * OCT_SG_ENTRY_SIZE); | |
827 | ||
828 | g->sg = kmalloc(g->sg_size + 8, GFP_KERNEL); | |
829 | if (!g->sg) { | |
830 | kfree(g); | |
831 | break; | |
832 | } | |
833 | ||
834 | /* The gather component should be aligned on 64-bit boundary */ | |
835 | if (((unsigned long)g->sg) & 7) { | |
836 | g->adjust = 8 - (((unsigned long)g->sg) & 7); | |
837 | g->sg = (struct octeon_sg_entry *) | |
838 | ((unsigned long)g->sg + g->adjust); | |
839 | } | |
840 | list_add_tail(&g->list, &lio->glist); | |
841 | } | |
842 | ||
843 | if (i == lio->tx_qsize) | |
844 | return 0; | |
845 | ||
846 | delete_glist(lio); | |
847 | return 1; | |
848 | } | |
849 | ||
850 | /** | |
851 | * \brief Print link information | |
852 | * @param netdev network device | |
853 | */ | |
854 | static void print_link_info(struct net_device *netdev) | |
855 | { | |
856 | struct lio *lio = GET_LIO(netdev); | |
857 | ||
858 | if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED) { | |
859 | struct oct_link_info *linfo = &lio->linfo; | |
860 | ||
861 | if (linfo->link.s.status) { | |
862 | netif_info(lio, link, lio->netdev, "%d Mbps %s Duplex UP\n", | |
863 | linfo->link.s.speed, | |
864 | (linfo->link.s.duplex) ? "Full" : "Half"); | |
865 | } else { | |
866 | netif_info(lio, link, lio->netdev, "Link Down\n"); | |
867 | } | |
868 | } | |
869 | } | |
870 | ||
871 | /** | |
872 | * \brief Update link status | |
873 | * @param netdev network device | |
874 | * @param ls link status structure | |
875 | * | |
876 | * Called on receipt of a link status response from the core application to | |
877 | * update each interface's link status. | |
878 | */ | |
879 | static inline void update_link_status(struct net_device *netdev, | |
880 | union oct_link_status *ls) | |
881 | { | |
882 | struct lio *lio = GET_LIO(netdev); | |
883 | ||
884 | if ((lio->intf_open) && (lio->linfo.link.u64 != ls->u64)) { | |
885 | lio->linfo.link.u64 = ls->u64; | |
886 | ||
887 | print_link_info(netdev); | |
888 | ||
889 | if (lio->linfo.link.s.status) { | |
890 | netif_carrier_on(netdev); | |
891 | /* start_txq(netdev); */ | |
892 | txqs_wake(netdev); | |
893 | } else { | |
894 | netif_carrier_off(netdev); | |
895 | stop_txq(netdev); | |
896 | } | |
897 | } | |
898 | } | |
899 | ||
900 | /** | |
901 | * \brief Droq packet processor sceduler | |
902 | * @param oct octeon device | |
903 | */ | |
904 | static | |
905 | void liquidio_schedule_droq_pkt_handlers(struct octeon_device *oct) | |
906 | { | |
907 | struct octeon_device_priv *oct_priv = | |
908 | (struct octeon_device_priv *)oct->priv; | |
909 | u64 oq_no; | |
910 | struct octeon_droq *droq; | |
911 | ||
912 | if (oct->int_status & OCT_DEV_INTR_PKT_DATA) { | |
913 | for (oq_no = 0; oq_no < MAX_OCTEON_OUTPUT_QUEUES; oq_no++) { | |
914 | if (!(oct->droq_intr & (1 << oq_no))) | |
915 | continue; | |
916 | ||
917 | droq = oct->droq[oq_no]; | |
918 | ||
919 | if (droq->ops.poll_mode) { | |
920 | droq->ops.napi_fn(droq); | |
921 | oct_priv->napi_mask |= (1 << oq_no); | |
922 | } else { | |
923 | tasklet_schedule(&oct_priv->droq_tasklet); | |
924 | } | |
925 | } | |
926 | } | |
927 | } | |
928 | ||
929 | /** | |
930 | * \brief Interrupt handler for octeon | |
931 | * @param irq unused | |
932 | * @param dev octeon device | |
933 | */ | |
934 | static | |
935 | irqreturn_t liquidio_intr_handler(int irq __attribute__((unused)), void *dev) | |
936 | { | |
937 | struct octeon_device *oct = (struct octeon_device *)dev; | |
938 | irqreturn_t ret; | |
939 | ||
940 | /* Disable our interrupts for the duration of ISR */ | |
941 | oct->fn_list.disable_interrupt(oct->chip); | |
942 | ||
943 | ret = oct->fn_list.process_interrupt_regs(oct); | |
944 | ||
945 | if (ret == IRQ_HANDLED) | |
946 | liquidio_schedule_droq_pkt_handlers(oct); | |
947 | ||
948 | /* Re-enable our interrupts */ | |
949 | if (!(atomic_read(&oct->status) == OCT_DEV_IN_RESET)) | |
950 | oct->fn_list.enable_interrupt(oct->chip); | |
951 | ||
952 | return ret; | |
953 | } | |
954 | ||
955 | /** | |
956 | * \brief Setup interrupt for octeon device | |
957 | * @param oct octeon device | |
958 | * | |
959 | * Enable interrupt in Octeon device as given in the PCI interrupt mask. | |
960 | */ | |
961 | static int octeon_setup_interrupt(struct octeon_device *oct) | |
962 | { | |
963 | int irqret, err; | |
964 | ||
965 | err = pci_enable_msi(oct->pci_dev); | |
966 | if (err) | |
967 | dev_warn(&oct->pci_dev->dev, "Reverting to legacy interrupts. Error: %d\n", | |
968 | err); | |
969 | else | |
970 | oct->flags |= LIO_FLAG_MSI_ENABLED; | |
971 | ||
972 | irqret = request_irq(oct->pci_dev->irq, liquidio_intr_handler, | |
973 | IRQF_SHARED, "octeon", oct); | |
974 | if (irqret) { | |
975 | if (oct->flags & LIO_FLAG_MSI_ENABLED) | |
976 | pci_disable_msi(oct->pci_dev); | |
977 | dev_err(&oct->pci_dev->dev, "Request IRQ failed with code: %d\n", | |
978 | irqret); | |
979 | return 1; | |
980 | } | |
981 | ||
982 | return 0; | |
983 | } | |
984 | ||
985 | /** | |
986 | * \brief PCI probe handler | |
987 | * @param pdev PCI device structure | |
988 | * @param ent unused | |
989 | */ | |
990 | static int liquidio_probe(struct pci_dev *pdev, const struct pci_device_id *ent) | |
991 | { | |
992 | struct octeon_device *oct_dev = NULL; | |
993 | struct handshake *hs; | |
994 | ||
995 | oct_dev = octeon_allocate_device(pdev->device, | |
996 | sizeof(struct octeon_device_priv)); | |
997 | if (!oct_dev) { | |
998 | dev_err(&pdev->dev, "Unable to allocate device\n"); | |
999 | return -ENOMEM; | |
1000 | } | |
1001 | ||
1002 | dev_info(&pdev->dev, "Initializing device %x:%x.\n", | |
1003 | (u32)pdev->vendor, (u32)pdev->device); | |
1004 | ||
1005 | /* Assign octeon_device for this device to the private data area. */ | |
1006 | pci_set_drvdata(pdev, oct_dev); | |
1007 | ||
1008 | /* set linux specific device pointer */ | |
1009 | oct_dev->pci_dev = (void *)pdev; | |
1010 | ||
1011 | hs = &handshake[oct_dev->octeon_id]; | |
1012 | init_completion(&hs->init); | |
1013 | init_completion(&hs->started); | |
1014 | hs->pci_dev = pdev; | |
1015 | ||
1016 | if (oct_dev->octeon_id == 0) | |
1017 | /* first LiquidIO NIC is detected */ | |
1018 | complete(&first_stage); | |
1019 | ||
1020 | if (octeon_device_init(oct_dev)) { | |
1021 | liquidio_remove(pdev); | |
1022 | return -ENOMEM; | |
1023 | } | |
1024 | ||
1025 | dev_dbg(&oct_dev->pci_dev->dev, "Device is ready\n"); | |
1026 | ||
1027 | return 0; | |
1028 | } | |
1029 | ||
1030 | /** | |
1031 | *\brief Destroy resources associated with octeon device | |
1032 | * @param pdev PCI device structure | |
1033 | * @param ent unused | |
1034 | */ | |
1035 | static void octeon_destroy_resources(struct octeon_device *oct) | |
1036 | { | |
1037 | int i; | |
1038 | struct octeon_device_priv *oct_priv = | |
1039 | (struct octeon_device_priv *)oct->priv; | |
1040 | ||
1041 | struct handshake *hs; | |
1042 | ||
1043 | switch (atomic_read(&oct->status)) { | |
1044 | case OCT_DEV_RUNNING: | |
1045 | case OCT_DEV_CORE_OK: | |
1046 | ||
1047 | /* No more instructions will be forwarded. */ | |
1048 | atomic_set(&oct->status, OCT_DEV_IN_RESET); | |
1049 | ||
1050 | oct->app_mode = CVM_DRV_INVALID_APP; | |
1051 | dev_dbg(&oct->pci_dev->dev, "Device state is now %s\n", | |
1052 | lio_get_state_string(&oct->status)); | |
1053 | ||
1054 | schedule_timeout_uninterruptible(HZ / 10); | |
1055 | ||
1056 | /* fallthrough */ | |
1057 | case OCT_DEV_HOST_OK: | |
1058 | ||
1059 | /* fallthrough */ | |
1060 | case OCT_DEV_CONSOLE_INIT_DONE: | |
1061 | /* Remove any consoles */ | |
1062 | octeon_remove_consoles(oct); | |
1063 | ||
1064 | /* fallthrough */ | |
1065 | case OCT_DEV_IO_QUEUES_DONE: | |
1066 | if (wait_for_pending_requests(oct)) | |
1067 | dev_err(&oct->pci_dev->dev, "There were pending requests\n"); | |
1068 | ||
1069 | if (lio_wait_for_instr_fetch(oct)) | |
1070 | dev_err(&oct->pci_dev->dev, "IQ had pending instructions\n"); | |
1071 | ||
1072 | /* Disable the input and output queues now. No more packets will | |
1073 | * arrive from Octeon, but we should wait for all packet | |
1074 | * processing to finish. | |
1075 | */ | |
1076 | oct->fn_list.disable_io_queues(oct); | |
1077 | ||
1078 | if (lio_wait_for_oq_pkts(oct)) | |
1079 | dev_err(&oct->pci_dev->dev, "OQ had pending packets\n"); | |
1080 | ||
1081 | /* Disable interrupts */ | |
1082 | oct->fn_list.disable_interrupt(oct->chip); | |
1083 | ||
1084 | /* Release the interrupt line */ | |
1085 | free_irq(oct->pci_dev->irq, oct); | |
1086 | ||
1087 | if (oct->flags & LIO_FLAG_MSI_ENABLED) | |
1088 | pci_disable_msi(oct->pci_dev); | |
1089 | ||
1090 | /* Soft reset the octeon device before exiting */ | |
1091 | oct->fn_list.soft_reset(oct); | |
1092 | ||
1093 | /* Disable the device, releasing the PCI INT */ | |
1094 | pci_disable_device(oct->pci_dev); | |
1095 | ||
1096 | /* fallthrough */ | |
1097 | case OCT_DEV_IN_RESET: | |
1098 | case OCT_DEV_DROQ_INIT_DONE: | |
1099 | /*atomic_set(&oct->status, OCT_DEV_DROQ_INIT_DONE);*/ | |
1100 | mdelay(100); | |
1101 | for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES; i++) { | |
1102 | if (!(oct->io_qmask.oq & (1UL << i))) | |
1103 | continue; | |
1104 | octeon_delete_droq(oct, i); | |
1105 | } | |
1106 | ||
1107 | /* Force any pending handshakes to complete */ | |
1108 | for (i = 0; i < MAX_OCTEON_DEVICES; i++) { | |
1109 | hs = &handshake[i]; | |
1110 | ||
1111 | if (hs->pci_dev) { | |
1112 | handshake[oct->octeon_id].init_ok = 0; | |
1113 | complete(&handshake[oct->octeon_id].init); | |
1114 | handshake[oct->octeon_id].started_ok = 0; | |
1115 | complete(&handshake[oct->octeon_id].started); | |
1116 | } | |
1117 | } | |
1118 | ||
1119 | /* fallthrough */ | |
1120 | case OCT_DEV_RESP_LIST_INIT_DONE: | |
1121 | octeon_delete_response_list(oct); | |
1122 | ||
1123 | /* fallthrough */ | |
1124 | case OCT_DEV_SC_BUFF_POOL_INIT_DONE: | |
1125 | octeon_free_sc_buffer_pool(oct); | |
1126 | ||
1127 | /* fallthrough */ | |
1128 | case OCT_DEV_INSTR_QUEUE_INIT_DONE: | |
1129 | for (i = 0; i < MAX_OCTEON_INSTR_QUEUES; i++) { | |
1130 | if (!(oct->io_qmask.iq & (1UL << i))) | |
1131 | continue; | |
1132 | octeon_delete_instr_queue(oct, i); | |
1133 | } | |
1134 | ||
1135 | /* fallthrough */ | |
1136 | case OCT_DEV_DISPATCH_INIT_DONE: | |
1137 | octeon_delete_dispatch_list(oct); | |
1138 | cancel_delayed_work_sync(&oct->nic_poll_work.work); | |
1139 | ||
1140 | /* fallthrough */ | |
1141 | case OCT_DEV_PCI_MAP_DONE: | |
1142 | octeon_unmap_pci_barx(oct, 0); | |
1143 | octeon_unmap_pci_barx(oct, 1); | |
1144 | ||
1145 | /* fallthrough */ | |
1146 | case OCT_DEV_BEGIN_STATE: | |
1147 | /* Nothing to be done here either */ | |
1148 | break; | |
1149 | } /* end switch(oct->status) */ | |
1150 | ||
1151 | tasklet_kill(&oct_priv->droq_tasklet); | |
1152 | } | |
1153 | ||
1154 | /** | |
1155 | * \brief Send Rx control command | |
1156 | * @param lio per-network private data | |
1157 | * @param start_stop whether to start or stop | |
1158 | */ | |
1159 | static void send_rx_ctrl_cmd(struct lio *lio, int start_stop) | |
1160 | { | |
1161 | struct octnic_ctrl_pkt nctrl; | |
1162 | struct octnic_ctrl_params nparams; | |
1163 | ||
1164 | memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); | |
1165 | ||
1166 | nctrl.ncmd.s.cmd = OCTNET_CMD_RX_CTL; | |
1167 | nctrl.ncmd.s.param1 = lio->linfo.ifidx; | |
1168 | nctrl.ncmd.s.param2 = start_stop; | |
1169 | nctrl.netpndev = (u64)lio->netdev; | |
1170 | ||
1171 | nparams.resp_order = OCTEON_RESP_NORESPONSE; | |
1172 | ||
1173 | if (octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl, nparams) < 0) | |
1174 | netif_info(lio, rx_err, lio->netdev, "Failed to send RX Control message\n"); | |
1175 | } | |
1176 | ||
1177 | /** | |
1178 | * \brief Destroy NIC device interface | |
1179 | * @param oct octeon device | |
1180 | * @param ifidx which interface to destroy | |
1181 | * | |
1182 | * Cleanup associated with each interface for an Octeon device when NIC | |
1183 | * module is being unloaded or if initialization fails during load. | |
1184 | */ | |
1185 | static void liquidio_destroy_nic_device(struct octeon_device *oct, int ifidx) | |
1186 | { | |
1187 | struct net_device *netdev = oct->props[ifidx].netdev; | |
1188 | struct lio *lio; | |
1189 | ||
1190 | if (!netdev) { | |
1191 | dev_err(&oct->pci_dev->dev, "%s No netdevice ptr for index %d\n", | |
1192 | __func__, ifidx); | |
1193 | return; | |
1194 | } | |
1195 | ||
1196 | lio = GET_LIO(netdev); | |
1197 | ||
1198 | dev_dbg(&oct->pci_dev->dev, "NIC device cleanup\n"); | |
1199 | ||
1200 | send_rx_ctrl_cmd(lio, 0); | |
1201 | ||
1202 | if (atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING) | |
1203 | txqs_stop(netdev); | |
1204 | ||
1205 | if (atomic_read(&lio->ifstate) & LIO_IFSTATE_REGISTERED) | |
1206 | unregister_netdev(netdev); | |
1207 | ||
1208 | delete_glist(lio); | |
1209 | ||
1210 | free_netdev(netdev); | |
1211 | ||
1212 | oct->props[ifidx].netdev = NULL; | |
1213 | } | |
1214 | ||
1215 | /** | |
1216 | * \brief Stop complete NIC functionality | |
1217 | * @param oct octeon device | |
1218 | */ | |
1219 | static int liquidio_stop_nic_module(struct octeon_device *oct) | |
1220 | { | |
1221 | int i, j; | |
1222 | struct lio *lio; | |
1223 | ||
1224 | dev_dbg(&oct->pci_dev->dev, "Stopping network interfaces\n"); | |
1225 | if (!oct->ifcount) { | |
1226 | dev_err(&oct->pci_dev->dev, "Init for Octeon was not completed\n"); | |
1227 | return 1; | |
1228 | } | |
1229 | ||
1230 | for (i = 0; i < oct->ifcount; i++) { | |
1231 | lio = GET_LIO(oct->props[i].netdev); | |
1232 | for (j = 0; j < lio->linfo.num_rxpciq; j++) | |
1233 | octeon_unregister_droq_ops(oct, lio->linfo.rxpciq[j]); | |
1234 | } | |
1235 | ||
1236 | for (i = 0; i < oct->ifcount; i++) | |
1237 | liquidio_destroy_nic_device(oct, i); | |
1238 | ||
1239 | dev_dbg(&oct->pci_dev->dev, "Network interfaces stopped\n"); | |
1240 | return 0; | |
1241 | } | |
1242 | ||
1243 | /** | |
1244 | * \brief Cleans up resources at unload time | |
1245 | * @param pdev PCI device structure | |
1246 | */ | |
1247 | static void liquidio_remove(struct pci_dev *pdev) | |
1248 | { | |
1249 | struct octeon_device *oct_dev = pci_get_drvdata(pdev); | |
1250 | ||
1251 | dev_dbg(&oct_dev->pci_dev->dev, "Stopping device\n"); | |
1252 | ||
1253 | if (oct_dev->app_mode && (oct_dev->app_mode == CVM_DRV_NIC_APP)) | |
1254 | liquidio_stop_nic_module(oct_dev); | |
1255 | ||
1256 | /* Reset the octeon device and cleanup all memory allocated for | |
1257 | * the octeon device by driver. | |
1258 | */ | |
1259 | octeon_destroy_resources(oct_dev); | |
1260 | ||
1261 | dev_info(&oct_dev->pci_dev->dev, "Device removed\n"); | |
1262 | ||
1263 | /* This octeon device has been removed. Update the global | |
1264 | * data structure to reflect this. Free the device structure. | |
1265 | */ | |
1266 | octeon_free_device_mem(oct_dev); | |
1267 | } | |
1268 | ||
1269 | /** | |
1270 | * \brief Identify the Octeon device and to map the BAR address space | |
1271 | * @param oct octeon device | |
1272 | */ | |
1273 | static int octeon_chip_specific_setup(struct octeon_device *oct) | |
1274 | { | |
1275 | u32 dev_id, rev_id; | |
1276 | int ret = 1; | |
1277 | ||
1278 | pci_read_config_dword(oct->pci_dev, 0, &dev_id); | |
1279 | pci_read_config_dword(oct->pci_dev, 8, &rev_id); | |
1280 | oct->rev_id = rev_id & 0xff; | |
1281 | ||
1282 | switch (dev_id) { | |
1283 | case OCTEON_CN68XX_PCIID: | |
1284 | oct->chip_id = OCTEON_CN68XX; | |
1285 | ret = lio_setup_cn68xx_octeon_device(oct); | |
1286 | break; | |
1287 | ||
1288 | case OCTEON_CN66XX_PCIID: | |
1289 | oct->chip_id = OCTEON_CN66XX; | |
1290 | ret = lio_setup_cn66xx_octeon_device(oct); | |
1291 | break; | |
1292 | default: | |
1293 | dev_err(&oct->pci_dev->dev, "Unknown device found (dev_id: %x)\n", | |
1294 | dev_id); | |
1295 | } | |
1296 | ||
1297 | if (!ret) | |
1298 | dev_info(&oct->pci_dev->dev, "CN68XX PASS%d.%d %s\n", | |
1299 | OCTEON_MAJOR_REV(oct), | |
1300 | OCTEON_MINOR_REV(oct), | |
1301 | octeon_get_conf(oct)->card_name); | |
1302 | ||
1303 | return ret; | |
1304 | } | |
1305 | ||
1306 | /** | |
1307 | * \brief PCI initialization for each Octeon device. | |
1308 | * @param oct octeon device | |
1309 | */ | |
1310 | static int octeon_pci_os_setup(struct octeon_device *oct) | |
1311 | { | |
1312 | /* setup PCI stuff first */ | |
1313 | if (pci_enable_device(oct->pci_dev)) { | |
1314 | dev_err(&oct->pci_dev->dev, "pci_enable_device failed\n"); | |
1315 | return 1; | |
1316 | } | |
1317 | ||
1318 | if (dma_set_mask_and_coherent(&oct->pci_dev->dev, DMA_BIT_MASK(64))) { | |
1319 | dev_err(&oct->pci_dev->dev, "Unexpected DMA device capability\n"); | |
1320 | return 1; | |
1321 | } | |
1322 | ||
1323 | /* Enable PCI DMA Master. */ | |
1324 | pci_set_master(oct->pci_dev); | |
1325 | ||
1326 | return 0; | |
1327 | } | |
1328 | ||
1329 | /** | |
1330 | * \brief Check Tx queue state for a given network buffer | |
1331 | * @param lio per-network private data | |
1332 | * @param skb network buffer | |
1333 | */ | |
1334 | static inline int check_txq_state(struct lio *lio, struct sk_buff *skb) | |
1335 | { | |
1336 | int q = 0, iq = 0; | |
1337 | ||
1338 | if (netif_is_multiqueue(lio->netdev)) { | |
1339 | q = skb->queue_mapping; | |
1340 | iq = lio->linfo.txpciq[(q & (lio->linfo.num_txpciq - 1))]; | |
1341 | } else { | |
1342 | iq = lio->txq; | |
1343 | } | |
1344 | ||
1345 | if (octnet_iq_is_full(lio->oct_dev, iq)) | |
1346 | return 0; | |
1347 | wake_q(lio->netdev, q); | |
1348 | return 1; | |
1349 | } | |
1350 | ||
1351 | /** | |
1352 | * \brief Unmap and free network buffer | |
1353 | * @param buf buffer | |
1354 | */ | |
1355 | static void free_netbuf(void *buf) | |
1356 | { | |
1357 | struct sk_buff *skb; | |
1358 | struct octnet_buf_free_info *finfo; | |
1359 | struct lio *lio; | |
1360 | ||
1361 | finfo = (struct octnet_buf_free_info *)buf; | |
1362 | skb = finfo->skb; | |
1363 | lio = finfo->lio; | |
1364 | ||
1365 | dma_unmap_single(&lio->oct_dev->pci_dev->dev, finfo->dptr, skb->len, | |
1366 | DMA_TO_DEVICE); | |
1367 | ||
1368 | check_txq_state(lio, skb); | |
1369 | ||
1370 | recv_buffer_free((struct sk_buff *)skb); | |
1371 | } | |
1372 | ||
1373 | /** | |
1374 | * \brief Unmap and free gather buffer | |
1375 | * @param buf buffer | |
1376 | */ | |
1377 | static void free_netsgbuf(void *buf) | |
1378 | { | |
1379 | struct octnet_buf_free_info *finfo; | |
1380 | struct sk_buff *skb; | |
1381 | struct lio *lio; | |
1382 | struct octnic_gather *g; | |
1383 | int i, frags; | |
1384 | ||
1385 | finfo = (struct octnet_buf_free_info *)buf; | |
1386 | skb = finfo->skb; | |
1387 | lio = finfo->lio; | |
1388 | g = finfo->g; | |
1389 | frags = skb_shinfo(skb)->nr_frags; | |
1390 | ||
1391 | dma_unmap_single(&lio->oct_dev->pci_dev->dev, | |
1392 | g->sg[0].ptr[0], (skb->len - skb->data_len), | |
1393 | DMA_TO_DEVICE); | |
1394 | ||
1395 | i = 1; | |
1396 | while (frags--) { | |
1397 | struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1]; | |
1398 | ||
1399 | pci_unmap_page((lio->oct_dev)->pci_dev, | |
1400 | g->sg[(i >> 2)].ptr[(i & 3)], | |
1401 | frag->size, DMA_TO_DEVICE); | |
1402 | i++; | |
1403 | } | |
1404 | ||
1405 | dma_unmap_single(&lio->oct_dev->pci_dev->dev, | |
1406 | finfo->dptr, g->sg_size, | |
1407 | DMA_TO_DEVICE); | |
1408 | ||
1409 | spin_lock(&lio->lock); | |
1410 | list_add_tail(&g->list, &lio->glist); | |
1411 | spin_unlock(&lio->lock); | |
1412 | ||
1413 | check_txq_state(lio, skb); /* mq support: sub-queue state check */ | |
1414 | ||
1415 | recv_buffer_free((struct sk_buff *)skb); | |
1416 | } | |
1417 | ||
1418 | /** | |
1419 | * \brief Unmap and free gather buffer with response | |
1420 | * @param buf buffer | |
1421 | */ | |
1422 | static void free_netsgbuf_with_resp(void *buf) | |
1423 | { | |
1424 | struct octeon_soft_command *sc; | |
1425 | struct octnet_buf_free_info *finfo; | |
1426 | struct sk_buff *skb; | |
1427 | struct lio *lio; | |
1428 | struct octnic_gather *g; | |
1429 | int i, frags; | |
1430 | ||
1431 | sc = (struct octeon_soft_command *)buf; | |
1432 | skb = (struct sk_buff *)sc->callback_arg; | |
1433 | finfo = (struct octnet_buf_free_info *)&skb->cb; | |
1434 | ||
1435 | lio = finfo->lio; | |
1436 | g = finfo->g; | |
1437 | frags = skb_shinfo(skb)->nr_frags; | |
1438 | ||
1439 | dma_unmap_single(&lio->oct_dev->pci_dev->dev, | |
1440 | g->sg[0].ptr[0], (skb->len - skb->data_len), | |
1441 | DMA_TO_DEVICE); | |
1442 | ||
1443 | i = 1; | |
1444 | while (frags--) { | |
1445 | struct skb_frag_struct *frag = &skb_shinfo(skb)->frags[i - 1]; | |
1446 | ||
1447 | pci_unmap_page((lio->oct_dev)->pci_dev, | |
1448 | g->sg[(i >> 2)].ptr[(i & 3)], | |
1449 | frag->size, DMA_TO_DEVICE); | |
1450 | i++; | |
1451 | } | |
1452 | ||
1453 | dma_unmap_single(&lio->oct_dev->pci_dev->dev, | |
1454 | finfo->dptr, g->sg_size, | |
1455 | DMA_TO_DEVICE); | |
1456 | ||
1457 | spin_lock(&lio->lock); | |
1458 | list_add_tail(&g->list, &lio->glist); | |
1459 | spin_unlock(&lio->lock); | |
1460 | ||
1461 | /* Don't free the skb yet */ | |
1462 | ||
1463 | check_txq_state(lio, skb); | |
1464 | } | |
1465 | ||
1466 | /** | |
1467 | * \brief Adjust ptp frequency | |
1468 | * @param ptp PTP clock info | |
1469 | * @param ppb how much to adjust by, in parts-per-billion | |
1470 | */ | |
1471 | static int liquidio_ptp_adjfreq(struct ptp_clock_info *ptp, s32 ppb) | |
1472 | { | |
1473 | struct lio *lio = container_of(ptp, struct lio, ptp_info); | |
1474 | struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; | |
1475 | u64 comp, delta; | |
1476 | unsigned long flags; | |
1477 | bool neg_adj = false; | |
1478 | ||
1479 | if (ppb < 0) { | |
1480 | neg_adj = true; | |
1481 | ppb = -ppb; | |
1482 | } | |
1483 | ||
1484 | /* The hardware adds the clock compensation value to the | |
1485 | * PTP clock on every coprocessor clock cycle, so we | |
1486 | * compute the delta in terms of coprocessor clocks. | |
1487 | */ | |
1488 | delta = (u64)ppb << 32; | |
1489 | do_div(delta, oct->coproc_clock_rate); | |
1490 | ||
1491 | spin_lock_irqsave(&lio->ptp_lock, flags); | |
1492 | comp = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_COMP); | |
1493 | if (neg_adj) | |
1494 | comp -= delta; | |
1495 | else | |
1496 | comp += delta; | |
1497 | lio_pci_writeq(oct, comp, CN6XXX_MIO_PTP_CLOCK_COMP); | |
1498 | spin_unlock_irqrestore(&lio->ptp_lock, flags); | |
1499 | ||
1500 | return 0; | |
1501 | } | |
1502 | ||
1503 | /** | |
1504 | * \brief Adjust ptp time | |
1505 | * @param ptp PTP clock info | |
1506 | * @param delta how much to adjust by, in nanosecs | |
1507 | */ | |
1508 | static int liquidio_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta) | |
1509 | { | |
1510 | unsigned long flags; | |
1511 | struct lio *lio = container_of(ptp, struct lio, ptp_info); | |
1512 | ||
1513 | spin_lock_irqsave(&lio->ptp_lock, flags); | |
1514 | lio->ptp_adjust += delta; | |
1515 | spin_unlock_irqrestore(&lio->ptp_lock, flags); | |
1516 | ||
1517 | return 0; | |
1518 | } | |
1519 | ||
1520 | /** | |
1521 | * \brief Get hardware clock time, including any adjustment | |
1522 | * @param ptp PTP clock info | |
1523 | * @param ts timespec | |
1524 | */ | |
1525 | static int liquidio_ptp_gettime(struct ptp_clock_info *ptp, | |
1526 | struct timespec64 *ts) | |
1527 | { | |
1528 | u64 ns; | |
f21fb3ed RV |
1529 | unsigned long flags; |
1530 | struct lio *lio = container_of(ptp, struct lio, ptp_info); | |
1531 | struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; | |
1532 | ||
1533 | spin_lock_irqsave(&lio->ptp_lock, flags); | |
1534 | ns = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_HI); | |
1535 | ns += lio->ptp_adjust; | |
1536 | spin_unlock_irqrestore(&lio->ptp_lock, flags); | |
1537 | ||
286af315 | 1538 | *ts = ns_to_timespec64(ns); |
f21fb3ed RV |
1539 | |
1540 | return 0; | |
1541 | } | |
1542 | ||
1543 | /** | |
1544 | * \brief Set hardware clock time. Reset adjustment | |
1545 | * @param ptp PTP clock info | |
1546 | * @param ts timespec | |
1547 | */ | |
1548 | static int liquidio_ptp_settime(struct ptp_clock_info *ptp, | |
1549 | const struct timespec64 *ts) | |
1550 | { | |
1551 | u64 ns; | |
1552 | unsigned long flags; | |
1553 | struct lio *lio = container_of(ptp, struct lio, ptp_info); | |
1554 | struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; | |
1555 | ||
1556 | ns = timespec_to_ns(ts); | |
1557 | ||
1558 | spin_lock_irqsave(&lio->ptp_lock, flags); | |
1559 | lio_pci_writeq(oct, ns, CN6XXX_MIO_PTP_CLOCK_HI); | |
1560 | lio->ptp_adjust = 0; | |
1561 | spin_unlock_irqrestore(&lio->ptp_lock, flags); | |
1562 | ||
1563 | return 0; | |
1564 | } | |
1565 | ||
1566 | /** | |
1567 | * \brief Check if PTP is enabled | |
1568 | * @param ptp PTP clock info | |
1569 | * @param rq request | |
1570 | * @param on is it on | |
1571 | */ | |
1572 | static int liquidio_ptp_enable(struct ptp_clock_info *ptp, | |
1573 | struct ptp_clock_request *rq, int on) | |
1574 | { | |
1575 | return -EOPNOTSUPP; | |
1576 | } | |
1577 | ||
1578 | /** | |
1579 | * \brief Open PTP clock source | |
1580 | * @param netdev network device | |
1581 | */ | |
1582 | static void oct_ptp_open(struct net_device *netdev) | |
1583 | { | |
1584 | struct lio *lio = GET_LIO(netdev); | |
1585 | struct octeon_device *oct = (struct octeon_device *)lio->oct_dev; | |
1586 | ||
1587 | spin_lock_init(&lio->ptp_lock); | |
1588 | ||
1589 | snprintf(lio->ptp_info.name, 16, "%s", netdev->name); | |
1590 | lio->ptp_info.owner = THIS_MODULE; | |
1591 | lio->ptp_info.max_adj = 250000000; | |
1592 | lio->ptp_info.n_alarm = 0; | |
1593 | lio->ptp_info.n_ext_ts = 0; | |
1594 | lio->ptp_info.n_per_out = 0; | |
1595 | lio->ptp_info.pps = 0; | |
1596 | lio->ptp_info.adjfreq = liquidio_ptp_adjfreq; | |
1597 | lio->ptp_info.adjtime = liquidio_ptp_adjtime; | |
1598 | lio->ptp_info.gettime64 = liquidio_ptp_gettime; | |
1599 | lio->ptp_info.settime64 = liquidio_ptp_settime; | |
1600 | lio->ptp_info.enable = liquidio_ptp_enable; | |
1601 | ||
1602 | lio->ptp_adjust = 0; | |
1603 | ||
1604 | lio->ptp_clock = ptp_clock_register(&lio->ptp_info, | |
1605 | &oct->pci_dev->dev); | |
1606 | ||
1607 | if (IS_ERR(lio->ptp_clock)) | |
1608 | lio->ptp_clock = NULL; | |
1609 | } | |
1610 | ||
1611 | /** | |
1612 | * \brief Init PTP clock | |
1613 | * @param oct octeon device | |
1614 | */ | |
1615 | static void liquidio_ptp_init(struct octeon_device *oct) | |
1616 | { | |
1617 | u64 clock_comp, cfg; | |
1618 | ||
1619 | clock_comp = (u64)NSEC_PER_SEC << 32; | |
1620 | do_div(clock_comp, oct->coproc_clock_rate); | |
1621 | lio_pci_writeq(oct, clock_comp, CN6XXX_MIO_PTP_CLOCK_COMP); | |
1622 | ||
1623 | /* Enable */ | |
1624 | cfg = lio_pci_readq(oct, CN6XXX_MIO_PTP_CLOCK_CFG); | |
1625 | lio_pci_writeq(oct, cfg | 0x01, CN6XXX_MIO_PTP_CLOCK_CFG); | |
1626 | } | |
1627 | ||
1628 | /** | |
1629 | * \brief Load firmware to device | |
1630 | * @param oct octeon device | |
1631 | * | |
1632 | * Maps device to firmware filename, requests firmware, and downloads it | |
1633 | */ | |
1634 | static int load_firmware(struct octeon_device *oct) | |
1635 | { | |
1636 | int ret = 0; | |
1637 | const struct firmware *fw; | |
1638 | char fw_name[LIO_MAX_FW_FILENAME_LEN]; | |
1639 | char *tmp_fw_type; | |
1640 | ||
1641 | if (strncmp(fw_type, LIO_FW_NAME_TYPE_NONE, | |
1642 | sizeof(LIO_FW_NAME_TYPE_NONE)) == 0) { | |
1643 | dev_info(&oct->pci_dev->dev, "Skipping firmware load\n"); | |
1644 | return ret; | |
1645 | } | |
1646 | ||
1647 | if (fw_type[0] == '\0') | |
1648 | tmp_fw_type = LIO_FW_NAME_TYPE_NIC; | |
1649 | else | |
1650 | tmp_fw_type = fw_type; | |
1651 | ||
1652 | sprintf(fw_name, "%s%s%s_%s%s", LIO_FW_DIR, LIO_FW_BASE_NAME, | |
1653 | octeon_get_conf(oct)->card_name, tmp_fw_type, | |
1654 | LIO_FW_NAME_SUFFIX); | |
1655 | ||
1656 | ret = request_firmware(&fw, fw_name, &oct->pci_dev->dev); | |
1657 | if (ret) { | |
1658 | dev_err(&oct->pci_dev->dev, "Request firmware failed. Could not find file %s.\n.", | |
1659 | fw_name); | |
1660 | return ret; | |
1661 | } | |
1662 | ||
1663 | ret = octeon_download_firmware(oct, fw->data, fw->size); | |
1664 | ||
1665 | release_firmware(fw); | |
1666 | ||
1667 | return ret; | |
1668 | } | |
1669 | ||
1670 | /** | |
1671 | * \brief Setup output queue | |
1672 | * @param oct octeon device | |
1673 | * @param q_no which queue | |
1674 | * @param num_descs how many descriptors | |
1675 | * @param desc_size size of each descriptor | |
1676 | * @param app_ctx application context | |
1677 | */ | |
1678 | static int octeon_setup_droq(struct octeon_device *oct, int q_no, int num_descs, | |
1679 | int desc_size, void *app_ctx) | |
1680 | { | |
1681 | int ret_val = 0; | |
1682 | ||
1683 | dev_dbg(&oct->pci_dev->dev, "Creating Droq: %d\n", q_no); | |
1684 | /* droq creation and local register settings. */ | |
1685 | ret_val = octeon_create_droq(oct, q_no, num_descs, desc_size, app_ctx); | |
08a965ec | 1686 | if (ret_val < 0) |
f21fb3ed RV |
1687 | return ret_val; |
1688 | ||
1689 | if (ret_val == 1) { | |
1690 | dev_dbg(&oct->pci_dev->dev, "Using default droq %d\n", q_no); | |
1691 | return 0; | |
1692 | } | |
1693 | /* tasklet creation for the droq */ | |
1694 | ||
1695 | /* Enable the droq queues */ | |
1696 | octeon_set_droq_pkt_op(oct, q_no, 1); | |
1697 | ||
1698 | /* Send Credit for Octeon Output queues. Credits are always | |
1699 | * sent after the output queue is enabled. | |
1700 | */ | |
1701 | writel(oct->droq[q_no]->max_count, | |
1702 | oct->droq[q_no]->pkts_credit_reg); | |
1703 | ||
1704 | return ret_val; | |
1705 | } | |
1706 | ||
1707 | /** | |
1708 | * \brief Callback for getting interface configuration | |
1709 | * @param status status of request | |
1710 | * @param buf pointer to resp structure | |
1711 | */ | |
1712 | static void if_cfg_callback(struct octeon_device *oct, | |
1713 | u32 status, | |
1714 | void *buf) | |
1715 | { | |
1716 | struct octeon_soft_command *sc = (struct octeon_soft_command *)buf; | |
1717 | struct liquidio_if_cfg_resp *resp; | |
1718 | struct liquidio_if_cfg_context *ctx; | |
1719 | ||
1720 | resp = (struct liquidio_if_cfg_resp *)sc->virtrptr; | |
1721 | ctx = (struct liquidio_if_cfg_context *)sc->ctxptr; | |
1722 | ||
1723 | oct = lio_get_device(ctx->octeon_id); | |
1724 | if (resp->status) | |
1725 | dev_err(&oct->pci_dev->dev, "nic if cfg instruction failed. Status: %llx\n", | |
1726 | CVM_CAST64(resp->status)); | |
1727 | ACCESS_ONCE(ctx->cond) = 1; | |
1728 | ||
1729 | /* This barrier is required to be sure that the response has been | |
1730 | * written fully before waking up the handler | |
1731 | */ | |
1732 | wmb(); | |
1733 | ||
1734 | wake_up_interruptible(&ctx->wc); | |
1735 | } | |
1736 | ||
1737 | /** | |
1738 | * \brief Select queue based on hash | |
1739 | * @param dev Net device | |
1740 | * @param skb sk_buff structure | |
1741 | * @returns selected queue number | |
1742 | */ | |
1743 | static u16 select_q(struct net_device *dev, struct sk_buff *skb, | |
1744 | void *accel_priv, select_queue_fallback_t fallback) | |
1745 | { | |
1746 | int qindex; | |
1747 | struct lio *lio; | |
1748 | ||
1749 | lio = GET_LIO(dev); | |
1750 | /* select queue on chosen queue_mapping or core */ | |
1751 | qindex = skb_rx_queue_recorded(skb) ? | |
1752 | skb_get_rx_queue(skb) : smp_processor_id(); | |
1753 | return (u16)(qindex & (lio->linfo.num_txpciq - 1)); | |
1754 | } | |
1755 | ||
1756 | /** Routine to push packets arriving on Octeon interface upto network layer. | |
1757 | * @param oct_id - octeon device id. | |
1758 | * @param skbuff - skbuff struct to be passed to network layer. | |
1759 | * @param len - size of total data received. | |
1760 | * @param rh - Control header associated with the packet | |
1761 | * @param param - additional control data with the packet | |
1762 | */ | |
1763 | static void | |
1764 | liquidio_push_packet(u32 octeon_id, | |
1765 | void *skbuff, | |
1766 | u32 len, | |
1767 | union octeon_rh *rh, | |
1768 | void *param) | |
1769 | { | |
1770 | struct napi_struct *napi = param; | |
1771 | struct octeon_device *oct = lio_get_device(octeon_id); | |
1772 | struct sk_buff *skb = (struct sk_buff *)skbuff; | |
1773 | struct skb_shared_hwtstamps *shhwtstamps; | |
1774 | u64 ns; | |
1775 | struct net_device *netdev = | |
1776 | (struct net_device *)oct->props[rh->r_dh.link].netdev; | |
1777 | struct octeon_droq *droq = container_of(param, struct octeon_droq, | |
1778 | napi); | |
1779 | if (netdev) { | |
1780 | int packet_was_received; | |
1781 | struct lio *lio = GET_LIO(netdev); | |
1782 | ||
1783 | /* Do not proceed if the interface is not in RUNNING state. */ | |
1784 | if (!ifstate_check(lio, LIO_IFSTATE_RUNNING)) { | |
1785 | recv_buffer_free(skb); | |
1786 | droq->stats.rx_dropped++; | |
1787 | return; | |
1788 | } | |
1789 | ||
1790 | skb->dev = netdev; | |
1791 | ||
1792 | if (rh->r_dh.has_hwtstamp) { | |
1793 | /* timestamp is included from the hardware at the | |
1794 | * beginning of the packet. | |
1795 | */ | |
1796 | if (ifstate_check(lio, | |
1797 | LIO_IFSTATE_RX_TIMESTAMP_ENABLED)) { | |
1798 | /* Nanoseconds are in the first 64-bits | |
1799 | * of the packet. | |
1800 | */ | |
1801 | memcpy(&ns, (skb->data), sizeof(ns)); | |
1802 | shhwtstamps = skb_hwtstamps(skb); | |
1803 | shhwtstamps->hwtstamp = | |
1804 | ns_to_ktime(ns + lio->ptp_adjust); | |
1805 | } | |
1806 | skb_pull(skb, sizeof(ns)); | |
1807 | } | |
1808 | ||
1809 | skb->protocol = eth_type_trans(skb, skb->dev); | |
1810 | ||
1811 | if ((netdev->features & NETIF_F_RXCSUM) && | |
1812 | (rh->r_dh.csum_verified == CNNIC_CSUM_VERIFIED)) | |
1813 | /* checksum has already been verified */ | |
1814 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
1815 | else | |
1816 | skb->ip_summed = CHECKSUM_NONE; | |
1817 | ||
1818 | packet_was_received = napi_gro_receive(napi, skb) != GRO_DROP; | |
1819 | ||
1820 | if (packet_was_received) { | |
1821 | droq->stats.rx_bytes_received += len; | |
1822 | droq->stats.rx_pkts_received++; | |
1823 | netdev->last_rx = jiffies; | |
1824 | } else { | |
1825 | droq->stats.rx_dropped++; | |
1826 | netif_info(lio, rx_err, lio->netdev, | |
1827 | "droq:%d error rx_dropped:%llu\n", | |
1828 | droq->q_no, droq->stats.rx_dropped); | |
1829 | } | |
1830 | ||
1831 | } else { | |
1832 | recv_buffer_free(skb); | |
1833 | } | |
1834 | } | |
1835 | ||
1836 | /** | |
1837 | * \brief wrapper for calling napi_schedule | |
1838 | * @param param parameters to pass to napi_schedule | |
1839 | * | |
1840 | * Used when scheduling on different CPUs | |
1841 | */ | |
1842 | static void napi_schedule_wrapper(void *param) | |
1843 | { | |
1844 | struct napi_struct *napi = param; | |
1845 | ||
1846 | napi_schedule(napi); | |
1847 | } | |
1848 | ||
1849 | /** | |
1850 | * \brief callback when receive interrupt occurs and we are in NAPI mode | |
1851 | * @param arg pointer to octeon output queue | |
1852 | */ | |
1853 | static void liquidio_napi_drv_callback(void *arg) | |
1854 | { | |
1855 | struct octeon_droq *droq = arg; | |
1856 | int this_cpu = smp_processor_id(); | |
1857 | ||
1858 | if (droq->cpu_id == this_cpu) { | |
1859 | napi_schedule(&droq->napi); | |
1860 | } else { | |
1861 | struct call_single_data *csd = &droq->csd; | |
1862 | ||
1863 | csd->func = napi_schedule_wrapper; | |
1864 | csd->info = &droq->napi; | |
1865 | csd->flags = 0; | |
1866 | ||
1867 | smp_call_function_single_async(droq->cpu_id, csd); | |
1868 | } | |
1869 | } | |
1870 | ||
1871 | /** | |
1872 | * \brief Main NAPI poll function | |
1873 | * @param droq octeon output queue | |
1874 | * @param budget maximum number of items to process | |
1875 | */ | |
1876 | static int liquidio_napi_do_rx(struct octeon_droq *droq, int budget) | |
1877 | { | |
1878 | int work_done; | |
1879 | struct lio *lio = GET_LIO(droq->napi.dev); | |
1880 | struct octeon_device *oct = lio->oct_dev; | |
1881 | ||
1882 | work_done = octeon_process_droq_poll_cmd(oct, droq->q_no, | |
1883 | POLL_EVENT_PROCESS_PKTS, | |
1884 | budget); | |
1885 | if (work_done < 0) { | |
1886 | netif_info(lio, rx_err, lio->netdev, | |
1887 | "Receive work_done < 0, rxq:%d\n", droq->q_no); | |
1888 | goto octnet_napi_finish; | |
1889 | } | |
1890 | ||
1891 | if (work_done > budget) | |
1892 | dev_err(&oct->pci_dev->dev, ">>>> %s work_done: %d budget: %d\n", | |
1893 | __func__, work_done, budget); | |
1894 | ||
1895 | return work_done; | |
1896 | ||
1897 | octnet_napi_finish: | |
1898 | napi_complete(&droq->napi); | |
1899 | octeon_process_droq_poll_cmd(oct, droq->q_no, POLL_EVENT_ENABLE_INTR, | |
1900 | 0); | |
1901 | return 0; | |
1902 | } | |
1903 | ||
1904 | /** | |
1905 | * \brief Entry point for NAPI polling | |
1906 | * @param napi NAPI structure | |
1907 | * @param budget maximum number of items to process | |
1908 | */ | |
1909 | static int liquidio_napi_poll(struct napi_struct *napi, int budget) | |
1910 | { | |
1911 | struct octeon_droq *droq; | |
1912 | int work_done; | |
1913 | ||
1914 | droq = container_of(napi, struct octeon_droq, napi); | |
1915 | ||
1916 | work_done = liquidio_napi_do_rx(droq, budget); | |
1917 | ||
1918 | if (work_done < budget) { | |
1919 | napi_complete(napi); | |
1920 | octeon_process_droq_poll_cmd(droq->oct_dev, droq->q_no, | |
1921 | POLL_EVENT_ENABLE_INTR, 0); | |
1922 | return 0; | |
1923 | } | |
1924 | ||
1925 | return work_done; | |
1926 | } | |
1927 | ||
1928 | /** | |
1929 | * \brief Setup input and output queues | |
1930 | * @param octeon_dev octeon device | |
1931 | * @param net_device Net device | |
1932 | * | |
1933 | * Note: Queues are with respect to the octeon device. Thus | |
1934 | * an input queue is for egress packets, and output queues | |
1935 | * are for ingress packets. | |
1936 | */ | |
1937 | static inline int setup_io_queues(struct octeon_device *octeon_dev, | |
1938 | struct net_device *net_device) | |
1939 | { | |
1940 | static int first_time = 1; | |
1941 | static struct octeon_droq_ops droq_ops; | |
1942 | static int cpu_id; | |
1943 | static int cpu_id_modulus; | |
1944 | struct octeon_droq *droq; | |
1945 | struct napi_struct *napi; | |
1946 | int q, q_no, retval = 0; | |
1947 | struct lio *lio; | |
1948 | int num_tx_descs; | |
1949 | ||
1950 | lio = GET_LIO(net_device); | |
1951 | if (first_time) { | |
1952 | first_time = 0; | |
1953 | memset(&droq_ops, 0, sizeof(struct octeon_droq_ops)); | |
1954 | ||
1955 | droq_ops.fptr = liquidio_push_packet; | |
1956 | ||
1957 | droq_ops.poll_mode = 1; | |
1958 | droq_ops.napi_fn = liquidio_napi_drv_callback; | |
1959 | cpu_id = 0; | |
1960 | cpu_id_modulus = num_present_cpus(); | |
1961 | } | |
1962 | ||
1963 | /* set up DROQs. */ | |
1964 | for (q = 0; q < lio->linfo.num_rxpciq; q++) { | |
1965 | q_no = lio->linfo.rxpciq[q]; | |
1966 | ||
1967 | retval = octeon_setup_droq(octeon_dev, q_no, | |
1968 | CFG_GET_NUM_RX_DESCS_NIC_IF | |
1969 | (octeon_get_conf(octeon_dev), | |
1970 | lio->ifidx), | |
1971 | CFG_GET_NUM_RX_BUF_SIZE_NIC_IF | |
1972 | (octeon_get_conf(octeon_dev), | |
1973 | lio->ifidx), NULL); | |
1974 | if (retval) { | |
1975 | dev_err(&octeon_dev->pci_dev->dev, | |
1976 | " %s : Runtime DROQ(RxQ) creation failed.\n", | |
1977 | __func__); | |
1978 | return 1; | |
1979 | } | |
1980 | ||
1981 | droq = octeon_dev->droq[q_no]; | |
1982 | napi = &droq->napi; | |
1983 | netif_napi_add(net_device, napi, liquidio_napi_poll, 64); | |
1984 | ||
1985 | /* designate a CPU for this droq */ | |
1986 | droq->cpu_id = cpu_id; | |
1987 | cpu_id++; | |
1988 | if (cpu_id >= cpu_id_modulus) | |
1989 | cpu_id = 0; | |
1990 | ||
1991 | octeon_register_droq_ops(octeon_dev, q_no, &droq_ops); | |
1992 | } | |
1993 | ||
1994 | /* set up IQs. */ | |
1995 | for (q = 0; q < lio->linfo.num_txpciq; q++) { | |
1996 | num_tx_descs = CFG_GET_NUM_TX_DESCS_NIC_IF(octeon_get_conf | |
1997 | (octeon_dev), | |
1998 | lio->ifidx); | |
1999 | retval = octeon_setup_iq(octeon_dev, lio->linfo.txpciq[q], | |
2000 | num_tx_descs, | |
2001 | netdev_get_tx_queue(net_device, q)); | |
2002 | if (retval) { | |
2003 | dev_err(&octeon_dev->pci_dev->dev, | |
2004 | " %s : Runtime IQ(TxQ) creation failed.\n", | |
2005 | __func__); | |
2006 | return 1; | |
2007 | } | |
2008 | } | |
2009 | ||
2010 | return 0; | |
2011 | } | |
2012 | ||
2013 | /** | |
2014 | * \brief Poll routine for checking transmit queue status | |
2015 | * @param work work_struct data structure | |
2016 | */ | |
2017 | static void octnet_poll_check_txq_status(struct work_struct *work) | |
2018 | { | |
2019 | struct cavium_wk *wk = (struct cavium_wk *)work; | |
2020 | struct lio *lio = (struct lio *)wk->ctxptr; | |
2021 | ||
2022 | if (!ifstate_check(lio, LIO_IFSTATE_RUNNING)) | |
2023 | return; | |
2024 | ||
2025 | check_txq_status(lio); | |
2026 | queue_delayed_work(lio->txq_status_wq.wq, | |
2027 | &lio->txq_status_wq.wk.work, msecs_to_jiffies(1)); | |
2028 | } | |
2029 | ||
2030 | /** | |
2031 | * \brief Sets up the txq poll check | |
2032 | * @param netdev network device | |
2033 | */ | |
2034 | static inline void setup_tx_poll_fn(struct net_device *netdev) | |
2035 | { | |
2036 | struct lio *lio = GET_LIO(netdev); | |
2037 | struct octeon_device *oct = lio->oct_dev; | |
2038 | ||
2039 | lio->txq_status_wq.wq = create_workqueue("txq-status"); | |
2040 | if (!lio->txq_status_wq.wq) { | |
2041 | dev_err(&oct->pci_dev->dev, "unable to create cavium txq status wq\n"); | |
2042 | return; | |
2043 | } | |
2044 | INIT_DELAYED_WORK(&lio->txq_status_wq.wk.work, | |
2045 | octnet_poll_check_txq_status); | |
2046 | lio->txq_status_wq.wk.ctxptr = lio; | |
2047 | queue_delayed_work(lio->txq_status_wq.wq, | |
2048 | &lio->txq_status_wq.wk.work, msecs_to_jiffies(1)); | |
2049 | } | |
2050 | ||
2051 | /** | |
2052 | * \brief Net device open for LiquidIO | |
2053 | * @param netdev network device | |
2054 | */ | |
2055 | static int liquidio_open(struct net_device *netdev) | |
2056 | { | |
2057 | struct lio *lio = GET_LIO(netdev); | |
2058 | struct octeon_device *oct = lio->oct_dev; | |
2059 | struct napi_struct *napi, *n; | |
2060 | ||
2061 | list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list) | |
2062 | napi_enable(napi); | |
2063 | ||
2064 | oct_ptp_open(netdev); | |
2065 | ||
2066 | ifstate_set(lio, LIO_IFSTATE_RUNNING); | |
2067 | setup_tx_poll_fn(netdev); | |
2068 | start_txq(netdev); | |
2069 | ||
2070 | netif_info(lio, ifup, lio->netdev, "Interface Open, ready for traffic\n"); | |
2071 | try_module_get(THIS_MODULE); | |
2072 | ||
2073 | /* tell Octeon to start forwarding packets to host */ | |
2074 | send_rx_ctrl_cmd(lio, 1); | |
2075 | ||
2076 | /* Ready for link status updates */ | |
2077 | lio->intf_open = 1; | |
2078 | ||
2079 | dev_info(&oct->pci_dev->dev, "%s interface is opened\n", | |
2080 | netdev->name); | |
2081 | ||
2082 | return 0; | |
2083 | } | |
2084 | ||
2085 | /** | |
2086 | * \brief Net device stop for LiquidIO | |
2087 | * @param netdev network device | |
2088 | */ | |
2089 | static int liquidio_stop(struct net_device *netdev) | |
2090 | { | |
2091 | struct napi_struct *napi, *n; | |
2092 | struct lio *lio = GET_LIO(netdev); | |
2093 | struct octeon_device *oct = lio->oct_dev; | |
2094 | ||
2095 | netif_info(lio, ifdown, lio->netdev, "Stopping interface!\n"); | |
2096 | /* Inform that netif carrier is down */ | |
2097 | lio->intf_open = 0; | |
2098 | lio->linfo.link.s.status = 0; | |
2099 | ||
2100 | netif_carrier_off(netdev); | |
2101 | ||
2102 | /* tell Octeon to stop forwarding packets to host */ | |
2103 | send_rx_ctrl_cmd(lio, 0); | |
2104 | ||
2105 | cancel_delayed_work_sync(&lio->txq_status_wq.wk.work); | |
2106 | flush_workqueue(lio->txq_status_wq.wq); | |
2107 | destroy_workqueue(lio->txq_status_wq.wq); | |
2108 | ||
2109 | if (lio->ptp_clock) { | |
2110 | ptp_clock_unregister(lio->ptp_clock); | |
2111 | lio->ptp_clock = NULL; | |
2112 | } | |
2113 | ||
2114 | ifstate_reset(lio, LIO_IFSTATE_RUNNING); | |
2115 | ||
2116 | /* This is a hack that allows DHCP to continue working. */ | |
2117 | set_bit(__LINK_STATE_START, &lio->netdev->state); | |
2118 | ||
2119 | list_for_each_entry_safe(napi, n, &netdev->napi_list, dev_list) | |
2120 | napi_disable(napi); | |
2121 | ||
2122 | txqs_stop(netdev); | |
2123 | ||
2124 | dev_info(&oct->pci_dev->dev, "%s interface is stopped\n", netdev->name); | |
2125 | module_put(THIS_MODULE); | |
2126 | ||
2127 | return 0; | |
2128 | } | |
2129 | ||
2130 | void liquidio_link_ctrl_cmd_completion(void *nctrl_ptr) | |
2131 | { | |
2132 | struct octnic_ctrl_pkt *nctrl = (struct octnic_ctrl_pkt *)nctrl_ptr; | |
2133 | struct net_device *netdev = (struct net_device *)nctrl->netpndev; | |
2134 | struct lio *lio = GET_LIO(netdev); | |
2135 | struct octeon_device *oct = lio->oct_dev; | |
2136 | ||
2137 | switch (nctrl->ncmd.s.cmd) { | |
2138 | case OCTNET_CMD_CHANGE_DEVFLAGS: | |
2139 | case OCTNET_CMD_SET_MULTI_LIST: | |
2140 | break; | |
2141 | ||
2142 | case OCTNET_CMD_CHANGE_MACADDR: | |
2143 | /* If command is successful, change the MACADDR. */ | |
2144 | netif_info(lio, probe, lio->netdev, " MACAddr changed to 0x%llx\n", | |
2145 | CVM_CAST64(nctrl->udd[0])); | |
2146 | dev_info(&oct->pci_dev->dev, "%s MACAddr changed to 0x%llx\n", | |
2147 | netdev->name, CVM_CAST64(nctrl->udd[0])); | |
2148 | memcpy(netdev->dev_addr, ((u8 *)&nctrl->udd[0]) + 2, ETH_ALEN); | |
2149 | break; | |
2150 | ||
2151 | case OCTNET_CMD_CHANGE_MTU: | |
2152 | /* If command is successful, change the MTU. */ | |
2153 | netif_info(lio, probe, lio->netdev, " MTU Changed from %d to %d\n", | |
2154 | netdev->mtu, nctrl->ncmd.s.param2); | |
2155 | dev_info(&oct->pci_dev->dev, "%s MTU Changed from %d to %d\n", | |
2156 | netdev->name, netdev->mtu, | |
2157 | nctrl->ncmd.s.param2); | |
2158 | netdev->mtu = nctrl->ncmd.s.param2; | |
2159 | break; | |
2160 | ||
2161 | case OCTNET_CMD_GPIO_ACCESS: | |
2162 | netif_info(lio, probe, lio->netdev, "LED Flashing visual identification\n"); | |
2163 | ||
2164 | break; | |
2165 | ||
2166 | case OCTNET_CMD_LRO_ENABLE: | |
2167 | dev_info(&oct->pci_dev->dev, "%s LRO Enabled\n", netdev->name); | |
2168 | break; | |
2169 | ||
2170 | case OCTNET_CMD_LRO_DISABLE: | |
2171 | dev_info(&oct->pci_dev->dev, "%s LRO Disabled\n", | |
2172 | netdev->name); | |
2173 | break; | |
2174 | ||
2175 | case OCTNET_CMD_VERBOSE_ENABLE: | |
2176 | dev_info(&oct->pci_dev->dev, "%s LRO Enabled\n", netdev->name); | |
2177 | break; | |
2178 | ||
2179 | case OCTNET_CMD_VERBOSE_DISABLE: | |
2180 | dev_info(&oct->pci_dev->dev, "%s LRO Disabled\n", | |
2181 | netdev->name); | |
2182 | break; | |
2183 | ||
2184 | case OCTNET_CMD_SET_SETTINGS: | |
2185 | dev_info(&oct->pci_dev->dev, "%s settings changed\n", | |
2186 | netdev->name); | |
2187 | ||
2188 | break; | |
2189 | ||
2190 | default: | |
2191 | dev_err(&oct->pci_dev->dev, "%s Unknown cmd %d\n", __func__, | |
2192 | nctrl->ncmd.s.cmd); | |
2193 | } | |
2194 | } | |
2195 | ||
2196 | /** | |
2197 | * \brief Converts a mask based on net device flags | |
2198 | * @param netdev network device | |
2199 | * | |
2200 | * This routine generates a octnet_ifflags mask from the net device flags | |
2201 | * received from the OS. | |
2202 | */ | |
2203 | static inline enum octnet_ifflags get_new_flags(struct net_device *netdev) | |
2204 | { | |
2205 | enum octnet_ifflags f = OCTNET_IFFLAG_UNICAST; | |
2206 | ||
2207 | if (netdev->flags & IFF_PROMISC) | |
2208 | f |= OCTNET_IFFLAG_PROMISC; | |
2209 | ||
2210 | if (netdev->flags & IFF_ALLMULTI) | |
2211 | f |= OCTNET_IFFLAG_ALLMULTI; | |
2212 | ||
2213 | if (netdev->flags & IFF_MULTICAST) { | |
2214 | f |= OCTNET_IFFLAG_MULTICAST; | |
2215 | ||
2216 | /* Accept all multicast addresses if there are more than we | |
2217 | * can handle | |
2218 | */ | |
2219 | if (netdev_mc_count(netdev) > MAX_OCTEON_MULTICAST_ADDR) | |
2220 | f |= OCTNET_IFFLAG_ALLMULTI; | |
2221 | } | |
2222 | ||
2223 | if (netdev->flags & IFF_BROADCAST) | |
2224 | f |= OCTNET_IFFLAG_BROADCAST; | |
2225 | ||
2226 | return f; | |
2227 | } | |
2228 | ||
2229 | /** | |
2230 | * \brief Net device set_multicast_list | |
2231 | * @param netdev network device | |
2232 | */ | |
2233 | static void liquidio_set_mcast_list(struct net_device *netdev) | |
2234 | { | |
2235 | struct lio *lio = GET_LIO(netdev); | |
2236 | struct octeon_device *oct = lio->oct_dev; | |
2237 | struct octnic_ctrl_pkt nctrl; | |
2238 | struct octnic_ctrl_params nparams; | |
2239 | struct netdev_hw_addr *ha; | |
2240 | u64 *mc; | |
2241 | int ret, i; | |
2242 | int mc_count = min(netdev_mc_count(netdev), MAX_OCTEON_MULTICAST_ADDR); | |
2243 | ||
2244 | memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); | |
2245 | ||
2246 | /* Create a ctrl pkt command to be sent to core app. */ | |
2247 | nctrl.ncmd.u64 = 0; | |
2248 | nctrl.ncmd.s.cmd = OCTNET_CMD_SET_MULTI_LIST; | |
2249 | nctrl.ncmd.s.param1 = lio->linfo.ifidx; | |
2250 | nctrl.ncmd.s.param2 = get_new_flags(netdev); | |
2251 | nctrl.ncmd.s.param3 = mc_count; | |
2252 | nctrl.ncmd.s.more = mc_count; | |
2253 | nctrl.netpndev = (u64)netdev; | |
2254 | nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; | |
2255 | ||
2256 | /* copy all the addresses into the udd */ | |
2257 | i = 0; | |
2258 | mc = &nctrl.udd[0]; | |
2259 | netdev_for_each_mc_addr(ha, netdev) { | |
2260 | *mc = 0; | |
2261 | memcpy(((u8 *)mc) + 2, ha->addr, ETH_ALEN); | |
2262 | /* no need to swap bytes */ | |
2263 | ||
2264 | if (++mc > &nctrl.udd[mc_count]) | |
2265 | break; | |
2266 | } | |
2267 | ||
2268 | /* Apparently, any activity in this call from the kernel has to | |
2269 | * be atomic. So we won't wait for response. | |
2270 | */ | |
2271 | nctrl.wait_time = 0; | |
2272 | ||
2273 | nparams.resp_order = OCTEON_RESP_NORESPONSE; | |
2274 | ||
2275 | ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl, nparams); | |
2276 | if (ret < 0) { | |
2277 | dev_err(&oct->pci_dev->dev, "DEVFLAGS change failed in core (ret: 0x%x)\n", | |
2278 | ret); | |
2279 | } | |
2280 | } | |
2281 | ||
2282 | /** | |
2283 | * \brief Net device set_mac_address | |
2284 | * @param netdev network device | |
2285 | */ | |
2286 | static int liquidio_set_mac(struct net_device *netdev, void *p) | |
2287 | { | |
2288 | int ret = 0; | |
2289 | struct lio *lio = GET_LIO(netdev); | |
2290 | struct octeon_device *oct = lio->oct_dev; | |
2291 | struct sockaddr *addr = (struct sockaddr *)p; | |
2292 | struct octnic_ctrl_pkt nctrl; | |
2293 | struct octnic_ctrl_params nparams; | |
2294 | ||
2295 | if ((!is_valid_ether_addr(addr->sa_data)) || | |
2296 | (ifstate_check(lio, LIO_IFSTATE_RUNNING))) | |
2297 | return -EADDRNOTAVAIL; | |
2298 | ||
2299 | memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); | |
2300 | ||
2301 | nctrl.ncmd.u64 = 0; | |
2302 | nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MACADDR; | |
2303 | nctrl.ncmd.s.param1 = lio->linfo.ifidx; | |
2304 | nctrl.ncmd.s.param2 = 0; | |
2305 | nctrl.ncmd.s.more = 1; | |
2306 | nctrl.netpndev = (u64)netdev; | |
2307 | nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; | |
2308 | nctrl.wait_time = 100; | |
2309 | ||
2310 | nctrl.udd[0] = 0; | |
2311 | /* The MAC Address is presented in network byte order. */ | |
2312 | memcpy((u8 *)&nctrl.udd[0] + 2, addr->sa_data, ETH_ALEN); | |
2313 | ||
2314 | nparams.resp_order = OCTEON_RESP_ORDERED; | |
2315 | ||
2316 | ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl, nparams); | |
2317 | if (ret < 0) { | |
2318 | dev_err(&oct->pci_dev->dev, "MAC Address change failed\n"); | |
2319 | return -ENOMEM; | |
2320 | } | |
2321 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
2322 | memcpy(((u8 *)&lio->linfo.hw_addr) + 2, addr->sa_data, ETH_ALEN); | |
2323 | ||
2324 | return 0; | |
2325 | } | |
2326 | ||
2327 | /** | |
2328 | * \brief Net device get_stats | |
2329 | * @param netdev network device | |
2330 | */ | |
2331 | static struct net_device_stats *liquidio_get_stats(struct net_device *netdev) | |
2332 | { | |
2333 | struct lio *lio = GET_LIO(netdev); | |
2334 | struct net_device_stats *stats = &netdev->stats; | |
2335 | struct octeon_device *oct; | |
2336 | u64 pkts = 0, drop = 0, bytes = 0; | |
2337 | struct oct_droq_stats *oq_stats; | |
2338 | struct oct_iq_stats *iq_stats; | |
2339 | int i, iq_no, oq_no; | |
2340 | ||
2341 | oct = lio->oct_dev; | |
2342 | ||
2343 | for (i = 0; i < lio->linfo.num_txpciq; i++) { | |
2344 | iq_no = lio->linfo.txpciq[i]; | |
2345 | iq_stats = &oct->instr_queue[iq_no]->stats; | |
2346 | pkts += iq_stats->tx_done; | |
2347 | drop += iq_stats->tx_dropped; | |
2348 | bytes += iq_stats->tx_tot_bytes; | |
2349 | } | |
2350 | ||
2351 | stats->tx_packets = pkts; | |
2352 | stats->tx_bytes = bytes; | |
2353 | stats->tx_dropped = drop; | |
2354 | ||
2355 | pkts = 0; | |
2356 | drop = 0; | |
2357 | bytes = 0; | |
2358 | ||
2359 | for (i = 0; i < lio->linfo.num_rxpciq; i++) { | |
2360 | oq_no = lio->linfo.rxpciq[i]; | |
2361 | oq_stats = &oct->droq[oq_no]->stats; | |
2362 | pkts += oq_stats->rx_pkts_received; | |
2363 | drop += (oq_stats->rx_dropped + | |
2364 | oq_stats->dropped_nodispatch + | |
2365 | oq_stats->dropped_toomany + | |
2366 | oq_stats->dropped_nomem); | |
2367 | bytes += oq_stats->rx_bytes_received; | |
2368 | } | |
2369 | ||
2370 | stats->rx_bytes = bytes; | |
2371 | stats->rx_packets = pkts; | |
2372 | stats->rx_dropped = drop; | |
2373 | ||
2374 | return stats; | |
2375 | } | |
2376 | ||
2377 | /** | |
2378 | * \brief Net device change_mtu | |
2379 | * @param netdev network device | |
2380 | */ | |
2381 | static int liquidio_change_mtu(struct net_device *netdev, int new_mtu) | |
2382 | { | |
2383 | struct lio *lio = GET_LIO(netdev); | |
2384 | struct octeon_device *oct = lio->oct_dev; | |
2385 | struct octnic_ctrl_pkt nctrl; | |
2386 | struct octnic_ctrl_params nparams; | |
2387 | int max_frm_size = new_mtu + OCTNET_FRM_HEADER_SIZE; | |
2388 | int ret = 0; | |
2389 | ||
2390 | /* Limit the MTU to make sure the ethernet packets are between 64 bytes | |
2391 | * and 65535 bytes | |
2392 | */ | |
2393 | if ((max_frm_size < OCTNET_MIN_FRM_SIZE) || | |
2394 | (max_frm_size > OCTNET_MAX_FRM_SIZE)) { | |
2395 | dev_err(&oct->pci_dev->dev, "Invalid MTU: %d\n", new_mtu); | |
2396 | dev_err(&oct->pci_dev->dev, "Valid range %d and %d\n", | |
2397 | (OCTNET_MIN_FRM_SIZE - OCTNET_FRM_HEADER_SIZE), | |
2398 | (OCTNET_MAX_FRM_SIZE - OCTNET_FRM_HEADER_SIZE)); | |
2399 | return -EINVAL; | |
2400 | } | |
2401 | ||
2402 | memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); | |
2403 | ||
2404 | nctrl.ncmd.u64 = 0; | |
2405 | nctrl.ncmd.s.cmd = OCTNET_CMD_CHANGE_MTU; | |
2406 | nctrl.ncmd.s.param1 = lio->linfo.ifidx; | |
2407 | nctrl.ncmd.s.param2 = new_mtu; | |
2408 | nctrl.wait_time = 100; | |
2409 | nctrl.netpndev = (u64)netdev; | |
2410 | nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; | |
2411 | ||
2412 | nparams.resp_order = OCTEON_RESP_ORDERED; | |
2413 | ||
2414 | ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl, nparams); | |
2415 | if (ret < 0) { | |
2416 | dev_err(&oct->pci_dev->dev, "Failed to set MTU\n"); | |
2417 | return -1; | |
2418 | } | |
2419 | ||
2420 | lio->mtu = new_mtu; | |
2421 | ||
2422 | return 0; | |
2423 | } | |
2424 | ||
2425 | /** | |
2426 | * \brief Handler for SIOCSHWTSTAMP ioctl | |
2427 | * @param netdev network device | |
2428 | * @param ifr interface request | |
2429 | * @param cmd command | |
2430 | */ | |
2431 | static int hwtstamp_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2432 | { | |
2433 | struct hwtstamp_config conf; | |
2434 | struct lio *lio = GET_LIO(netdev); | |
2435 | ||
2436 | if (copy_from_user(&conf, ifr->ifr_data, sizeof(conf))) | |
2437 | return -EFAULT; | |
2438 | ||
2439 | if (conf.flags) | |
2440 | return -EINVAL; | |
2441 | ||
2442 | switch (conf.tx_type) { | |
2443 | case HWTSTAMP_TX_ON: | |
2444 | case HWTSTAMP_TX_OFF: | |
2445 | break; | |
2446 | default: | |
2447 | return -ERANGE; | |
2448 | } | |
2449 | ||
2450 | switch (conf.rx_filter) { | |
2451 | case HWTSTAMP_FILTER_NONE: | |
2452 | break; | |
2453 | case HWTSTAMP_FILTER_ALL: | |
2454 | case HWTSTAMP_FILTER_SOME: | |
2455 | case HWTSTAMP_FILTER_PTP_V1_L4_EVENT: | |
2456 | case HWTSTAMP_FILTER_PTP_V1_L4_SYNC: | |
2457 | case HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ: | |
2458 | case HWTSTAMP_FILTER_PTP_V2_L4_EVENT: | |
2459 | case HWTSTAMP_FILTER_PTP_V2_L4_SYNC: | |
2460 | case HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ: | |
2461 | case HWTSTAMP_FILTER_PTP_V2_L2_EVENT: | |
2462 | case HWTSTAMP_FILTER_PTP_V2_L2_SYNC: | |
2463 | case HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ: | |
2464 | case HWTSTAMP_FILTER_PTP_V2_EVENT: | |
2465 | case HWTSTAMP_FILTER_PTP_V2_SYNC: | |
2466 | case HWTSTAMP_FILTER_PTP_V2_DELAY_REQ: | |
2467 | conf.rx_filter = HWTSTAMP_FILTER_ALL; | |
2468 | break; | |
2469 | default: | |
2470 | return -ERANGE; | |
2471 | } | |
2472 | ||
2473 | if (conf.rx_filter == HWTSTAMP_FILTER_ALL) | |
2474 | ifstate_set(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED); | |
2475 | ||
2476 | else | |
2477 | ifstate_reset(lio, LIO_IFSTATE_RX_TIMESTAMP_ENABLED); | |
2478 | ||
2479 | return copy_to_user(ifr->ifr_data, &conf, sizeof(conf)) ? -EFAULT : 0; | |
2480 | } | |
2481 | ||
2482 | /** | |
2483 | * \brief ioctl handler | |
2484 | * @param netdev network device | |
2485 | * @param ifr interface request | |
2486 | * @param cmd command | |
2487 | */ | |
2488 | static int liquidio_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2489 | { | |
2490 | switch (cmd) { | |
2491 | case SIOCSHWTSTAMP: | |
2492 | return hwtstamp_ioctl(netdev, ifr, cmd); | |
2493 | default: | |
2494 | return -EOPNOTSUPP; | |
2495 | } | |
2496 | } | |
2497 | ||
2498 | /** | |
2499 | * \brief handle a Tx timestamp response | |
2500 | * @param status response status | |
2501 | * @param buf pointer to skb | |
2502 | */ | |
2503 | static void handle_timestamp(struct octeon_device *oct, | |
2504 | u32 status, | |
2505 | void *buf) | |
2506 | { | |
2507 | struct octnet_buf_free_info *finfo; | |
2508 | struct octeon_soft_command *sc; | |
2509 | struct oct_timestamp_resp *resp; | |
2510 | struct lio *lio; | |
2511 | struct sk_buff *skb = (struct sk_buff *)buf; | |
2512 | ||
2513 | finfo = (struct octnet_buf_free_info *)skb->cb; | |
2514 | lio = finfo->lio; | |
2515 | sc = finfo->sc; | |
2516 | oct = lio->oct_dev; | |
2517 | resp = (struct oct_timestamp_resp *)sc->virtrptr; | |
2518 | ||
2519 | if (status != OCTEON_REQUEST_DONE) { | |
2520 | dev_err(&oct->pci_dev->dev, "Tx timestamp instruction failed. Status: %llx\n", | |
2521 | CVM_CAST64(status)); | |
2522 | resp->timestamp = 0; | |
2523 | } | |
2524 | ||
2525 | octeon_swap_8B_data(&resp->timestamp, 1); | |
2526 | ||
2527 | if (unlikely((skb_shinfo(skb)->tx_flags | SKBTX_IN_PROGRESS) != 0)) { | |
2528 | struct skb_shared_hwtstamps ts; | |
2529 | u64 ns = resp->timestamp; | |
2530 | ||
2531 | netif_info(lio, tx_done, lio->netdev, | |
2532 | "Got resulting SKBTX_HW_TSTAMP skb=%p ns=%016llu\n", | |
2533 | skb, (unsigned long long)ns); | |
2534 | ts.hwtstamp = ns_to_ktime(ns + lio->ptp_adjust); | |
2535 | skb_tstamp_tx(skb, &ts); | |
2536 | } | |
2537 | ||
2538 | octeon_free_soft_command(oct, sc); | |
2539 | recv_buffer_free(skb); | |
2540 | } | |
2541 | ||
2542 | /* \brief Send a data packet that will be timestamped | |
2543 | * @param oct octeon device | |
2544 | * @param ndata pointer to network data | |
2545 | * @param finfo pointer to private network data | |
2546 | */ | |
2547 | static inline int send_nic_timestamp_pkt(struct octeon_device *oct, | |
2548 | struct octnic_data_pkt *ndata, | |
2549 | struct octnet_buf_free_info *finfo, | |
2550 | int xmit_more) | |
2551 | { | |
2552 | int retval; | |
2553 | struct octeon_soft_command *sc; | |
2554 | struct octeon_instr_ih *ih; | |
2555 | struct octeon_instr_rdp *rdp; | |
2556 | struct lio *lio; | |
2557 | int ring_doorbell; | |
2558 | ||
2559 | lio = finfo->lio; | |
2560 | ||
2561 | sc = octeon_alloc_soft_command_resp(oct, &ndata->cmd, | |
2562 | sizeof(struct oct_timestamp_resp)); | |
2563 | finfo->sc = sc; | |
2564 | ||
2565 | if (!sc) { | |
2566 | dev_err(&oct->pci_dev->dev, "No memory for timestamped data packet\n"); | |
2567 | return IQ_SEND_FAILED; | |
2568 | } | |
2569 | ||
2570 | if (ndata->reqtype == REQTYPE_NORESP_NET) | |
2571 | ndata->reqtype = REQTYPE_RESP_NET; | |
2572 | else if (ndata->reqtype == REQTYPE_NORESP_NET_SG) | |
2573 | ndata->reqtype = REQTYPE_RESP_NET_SG; | |
2574 | ||
2575 | sc->callback = handle_timestamp; | |
2576 | sc->callback_arg = finfo->skb; | |
2577 | sc->iq_no = ndata->q_no; | |
2578 | ||
2579 | ih = (struct octeon_instr_ih *)&sc->cmd.ih; | |
2580 | rdp = (struct octeon_instr_rdp *)&sc->cmd.rdp; | |
2581 | ||
2582 | ring_doorbell = !xmit_more; | |
2583 | retval = octeon_send_command(oct, sc->iq_no, ring_doorbell, &sc->cmd, | |
2584 | sc, ih->dlengsz, ndata->reqtype); | |
2585 | ||
2586 | if (retval) { | |
2587 | dev_err(&oct->pci_dev->dev, "timestamp data packet failed status: %x\n", | |
2588 | retval); | |
2589 | octeon_free_soft_command(oct, sc); | |
2590 | } else { | |
2591 | netif_info(lio, tx_queued, lio->netdev, "Queued timestamp packet\n"); | |
2592 | } | |
2593 | ||
2594 | return retval; | |
2595 | } | |
2596 | ||
2597 | static inline int is_ipv4(struct sk_buff *skb) | |
2598 | { | |
2599 | return (skb->protocol == htons(ETH_P_IP)) && | |
2600 | (ip_hdr(skb)->version == 4); | |
2601 | } | |
2602 | ||
2603 | static inline int is_vlan(struct sk_buff *skb) | |
2604 | { | |
2605 | return skb->protocol == htons(ETH_P_8021Q); | |
2606 | } | |
2607 | ||
2608 | static inline int is_ip_fragmented(struct sk_buff *skb) | |
2609 | { | |
2610 | /* The Don't fragment and Reserved flag fields are ignored. | |
2611 | * IP is fragmented if | |
2612 | * - the More fragments bit is set (indicating this IP is a fragment | |
2613 | * with more to follow; the current offset could be 0 ). | |
2614 | * - ths offset field is non-zero. | |
2615 | */ | |
5b173cf9 | 2616 | return (ip_hdr(skb)->frag_off & htons(IP_MF | IP_OFFSET)) ? 1 : 0; |
f21fb3ed RV |
2617 | } |
2618 | ||
2619 | static inline int is_ipv6(struct sk_buff *skb) | |
2620 | { | |
2621 | return (skb->protocol == htons(ETH_P_IPV6)) && | |
2622 | (ipv6_hdr(skb)->version == 6); | |
2623 | } | |
2624 | ||
2625 | static inline int is_with_extn_hdr(struct sk_buff *skb) | |
2626 | { | |
2627 | return (ipv6_hdr(skb)->nexthdr != IPPROTO_TCP) && | |
2628 | (ipv6_hdr(skb)->nexthdr != IPPROTO_UDP); | |
2629 | } | |
2630 | ||
2631 | static inline int is_tcpudp(struct sk_buff *skb) | |
2632 | { | |
2633 | return (ip_hdr(skb)->protocol == IPPROTO_TCP) || | |
2634 | (ip_hdr(skb)->protocol == IPPROTO_UDP); | |
2635 | } | |
2636 | ||
2637 | static inline u32 get_ipv4_5tuple_tag(struct sk_buff *skb) | |
2638 | { | |
2639 | u32 tag; | |
2640 | struct iphdr *iphdr = ip_hdr(skb); | |
2641 | ||
2642 | tag = crc32(0, &iphdr->protocol, 1); | |
2643 | tag = crc32(tag, (u8 *)&iphdr->saddr, 8); | |
2644 | tag = crc32(tag, skb_transport_header(skb), 4); | |
2645 | return tag; | |
2646 | } | |
2647 | ||
2648 | static inline u32 get_ipv6_5tuple_tag(struct sk_buff *skb) | |
2649 | { | |
2650 | u32 tag; | |
2651 | struct ipv6hdr *ipv6hdr = ipv6_hdr(skb); | |
2652 | ||
2653 | tag = crc32(0, &ipv6hdr->nexthdr, 1); | |
2654 | tag = crc32(tag, (u8 *)&ipv6hdr->saddr, 32); | |
2655 | tag = crc32(tag, skb_transport_header(skb), 4); | |
2656 | return tag; | |
2657 | } | |
2658 | ||
2659 | /** \brief Transmit networks packets to the Octeon interface | |
2660 | * @param skbuff skbuff struct to be passed to network layer. | |
2661 | * @param netdev pointer to network device | |
2662 | * @returns whether the packet was transmitted to the device okay or not | |
2663 | * (NETDEV_TX_OK or NETDEV_TX_BUSY) | |
2664 | */ | |
2665 | static int liquidio_xmit(struct sk_buff *skb, struct net_device *netdev) | |
2666 | { | |
2667 | struct lio *lio; | |
2668 | struct octnet_buf_free_info *finfo; | |
2669 | union octnic_cmd_setup cmdsetup; | |
2670 | struct octnic_data_pkt ndata; | |
2671 | struct octeon_device *oct; | |
2672 | struct oct_iq_stats *stats; | |
2673 | int cpu = 0, status = 0; | |
2674 | int q_idx = 0, iq_no = 0; | |
2675 | int xmit_more; | |
2676 | u32 tag = 0; | |
2677 | ||
2678 | lio = GET_LIO(netdev); | |
2679 | oct = lio->oct_dev; | |
2680 | ||
2681 | if (netif_is_multiqueue(netdev)) { | |
2682 | cpu = skb->queue_mapping; | |
2683 | q_idx = (cpu & (lio->linfo.num_txpciq - 1)); | |
2684 | iq_no = lio->linfo.txpciq[q_idx]; | |
2685 | } else { | |
2686 | iq_no = lio->txq; | |
2687 | } | |
2688 | ||
2689 | stats = &oct->instr_queue[iq_no]->stats; | |
2690 | ||
2691 | /* Check for all conditions in which the current packet cannot be | |
2692 | * transmitted. | |
2693 | */ | |
2694 | if (!(atomic_read(&lio->ifstate) & LIO_IFSTATE_RUNNING) || | |
2695 | (!lio->linfo.link.s.status) || | |
2696 | (skb->len <= 0)) { | |
2697 | netif_info(lio, tx_err, lio->netdev, | |
2698 | "Transmit failed link_status : %d\n", | |
2699 | lio->linfo.link.s.status); | |
2700 | goto lio_xmit_failed; | |
2701 | } | |
2702 | ||
2703 | /* Use space in skb->cb to store info used to unmap and | |
2704 | * free the buffers. | |
2705 | */ | |
2706 | finfo = (struct octnet_buf_free_info *)skb->cb; | |
2707 | finfo->lio = lio; | |
2708 | finfo->skb = skb; | |
2709 | finfo->sc = NULL; | |
2710 | ||
2711 | /* Prepare the attributes for the data to be passed to OSI. */ | |
2712 | memset(&ndata, 0, sizeof(struct octnic_data_pkt)); | |
2713 | ||
2714 | ndata.buf = (void *)finfo; | |
2715 | ||
2716 | ndata.q_no = iq_no; | |
2717 | ||
2718 | if (netif_is_multiqueue(netdev)) { | |
2719 | if (octnet_iq_is_full(oct, ndata.q_no)) { | |
2720 | /* defer sending if queue is full */ | |
2721 | netif_info(lio, tx_err, lio->netdev, "Transmit failed iq:%d full\n", | |
2722 | ndata.q_no); | |
2723 | stats->tx_iq_busy++; | |
2724 | return NETDEV_TX_BUSY; | |
2725 | } | |
2726 | } else { | |
2727 | if (octnet_iq_is_full(oct, lio->txq)) { | |
2728 | /* defer sending if queue is full */ | |
2729 | stats->tx_iq_busy++; | |
2730 | netif_info(lio, tx_err, lio->netdev, "Transmit failed iq:%d full\n", | |
2731 | ndata.q_no); | |
2732 | return NETDEV_TX_BUSY; | |
2733 | } | |
2734 | } | |
2735 | /* pr_info(" XMIT - valid Qs: %d, 1st Q no: %d, cpu: %d, q_no:%d\n", | |
2736 | * lio->linfo.num_txpciq, lio->txq, cpu, ndata.q_no ); | |
2737 | */ | |
2738 | ||
2739 | ndata.datasize = skb->len; | |
2740 | ||
2741 | cmdsetup.u64 = 0; | |
2742 | cmdsetup.s.ifidx = lio->linfo.ifidx; | |
2743 | ||
2744 | if (skb->ip_summed == CHECKSUM_PARTIAL) { | |
2745 | if (is_ipv4(skb) && !is_ip_fragmented(skb) && is_tcpudp(skb)) { | |
2746 | tag = get_ipv4_5tuple_tag(skb); | |
2747 | ||
2748 | cmdsetup.s.cksum_offset = sizeof(struct ethhdr) + 1; | |
2749 | ||
2750 | if (ip_hdr(skb)->ihl > 5) | |
2751 | cmdsetup.s.ipv4opts_ipv6exthdr = | |
2752 | OCT_PKT_PARAM_IPV4OPTS; | |
2753 | ||
2754 | } else if (is_ipv6(skb)) { | |
2755 | tag = get_ipv6_5tuple_tag(skb); | |
2756 | ||
2757 | cmdsetup.s.cksum_offset = sizeof(struct ethhdr) + 1; | |
2758 | ||
2759 | if (is_with_extn_hdr(skb)) | |
2760 | cmdsetup.s.ipv4opts_ipv6exthdr = | |
2761 | OCT_PKT_PARAM_IPV6EXTHDR; | |
2762 | ||
2763 | } else if (is_vlan(skb)) { | |
2764 | if (vlan_eth_hdr(skb)->h_vlan_encapsulated_proto | |
2765 | == htons(ETH_P_IP) && | |
2766 | !is_ip_fragmented(skb) && is_tcpudp(skb)) { | |
2767 | tag = get_ipv4_5tuple_tag(skb); | |
2768 | ||
2769 | cmdsetup.s.cksum_offset = | |
2770 | sizeof(struct vlan_ethhdr) + 1; | |
2771 | ||
2772 | if (ip_hdr(skb)->ihl > 5) | |
2773 | cmdsetup.s.ipv4opts_ipv6exthdr = | |
2774 | OCT_PKT_PARAM_IPV4OPTS; | |
2775 | ||
2776 | } else if (vlan_eth_hdr(skb)->h_vlan_encapsulated_proto | |
2777 | == htons(ETH_P_IPV6)) { | |
2778 | tag = get_ipv6_5tuple_tag(skb); | |
2779 | ||
2780 | cmdsetup.s.cksum_offset = | |
2781 | sizeof(struct vlan_ethhdr) + 1; | |
2782 | ||
2783 | if (is_with_extn_hdr(skb)) | |
2784 | cmdsetup.s.ipv4opts_ipv6exthdr = | |
2785 | OCT_PKT_PARAM_IPV6EXTHDR; | |
2786 | } | |
2787 | } | |
2788 | } | |
2789 | if (unlikely(skb_shinfo(skb)->tx_flags & SKBTX_HW_TSTAMP)) { | |
2790 | skb_shinfo(skb)->tx_flags |= SKBTX_IN_PROGRESS; | |
2791 | cmdsetup.s.timestamp = 1; | |
2792 | } | |
2793 | ||
2794 | if (skb_shinfo(skb)->nr_frags == 0) { | |
2795 | cmdsetup.s.u.datasize = skb->len; | |
2796 | octnet_prepare_pci_cmd(&ndata.cmd, &cmdsetup, tag); | |
2797 | /* Offload checksum calculation for TCP/UDP packets */ | |
2798 | ndata.cmd.dptr = dma_map_single(&oct->pci_dev->dev, | |
2799 | skb->data, | |
2800 | skb->len, | |
2801 | DMA_TO_DEVICE); | |
2802 | if (dma_mapping_error(&oct->pci_dev->dev, ndata.cmd.dptr)) { | |
2803 | dev_err(&oct->pci_dev->dev, "%s DMA mapping error 1\n", | |
2804 | __func__); | |
2805 | return NETDEV_TX_BUSY; | |
2806 | } | |
2807 | ||
2808 | finfo->dptr = ndata.cmd.dptr; | |
2809 | ||
2810 | ndata.reqtype = REQTYPE_NORESP_NET; | |
2811 | ||
2812 | } else { | |
2813 | int i, frags; | |
2814 | struct skb_frag_struct *frag; | |
2815 | struct octnic_gather *g; | |
2816 | ||
2817 | spin_lock(&lio->lock); | |
2818 | g = (struct octnic_gather *)list_delete_head(&lio->glist); | |
2819 | spin_unlock(&lio->lock); | |
2820 | ||
2821 | if (!g) { | |
2822 | netif_info(lio, tx_err, lio->netdev, | |
2823 | "Transmit scatter gather: glist null!\n"); | |
2824 | goto lio_xmit_failed; | |
2825 | } | |
2826 | ||
2827 | cmdsetup.s.gather = 1; | |
2828 | cmdsetup.s.u.gatherptrs = (skb_shinfo(skb)->nr_frags + 1); | |
2829 | octnet_prepare_pci_cmd(&ndata.cmd, &cmdsetup, tag); | |
2830 | ||
2831 | memset(g->sg, 0, g->sg_size); | |
2832 | ||
2833 | g->sg[0].ptr[0] = dma_map_single(&oct->pci_dev->dev, | |
2834 | skb->data, | |
2835 | (skb->len - skb->data_len), | |
2836 | DMA_TO_DEVICE); | |
2837 | if (dma_mapping_error(&oct->pci_dev->dev, g->sg[0].ptr[0])) { | |
2838 | dev_err(&oct->pci_dev->dev, "%s DMA mapping error 2\n", | |
2839 | __func__); | |
2840 | return NETDEV_TX_BUSY; | |
2841 | } | |
2842 | add_sg_size(&g->sg[0], (skb->len - skb->data_len), 0); | |
2843 | ||
2844 | frags = skb_shinfo(skb)->nr_frags; | |
2845 | i = 1; | |
2846 | while (frags--) { | |
2847 | frag = &skb_shinfo(skb)->frags[i - 1]; | |
2848 | ||
2849 | g->sg[(i >> 2)].ptr[(i & 3)] = | |
2850 | dma_map_page(&oct->pci_dev->dev, | |
2851 | frag->page.p, | |
2852 | frag->page_offset, | |
2853 | frag->size, | |
2854 | DMA_TO_DEVICE); | |
2855 | ||
2856 | add_sg_size(&g->sg[(i >> 2)], frag->size, (i & 3)); | |
2857 | i++; | |
2858 | } | |
2859 | ||
2860 | ndata.cmd.dptr = dma_map_single(&oct->pci_dev->dev, | |
2861 | g->sg, g->sg_size, | |
2862 | DMA_TO_DEVICE); | |
2863 | if (dma_mapping_error(&oct->pci_dev->dev, ndata.cmd.dptr)) { | |
2864 | dev_err(&oct->pci_dev->dev, "%s DMA mapping error 3\n", | |
2865 | __func__); | |
2866 | dma_unmap_single(&oct->pci_dev->dev, g->sg[0].ptr[0], | |
2867 | skb->len - skb->data_len, | |
2868 | DMA_TO_DEVICE); | |
2869 | return NETDEV_TX_BUSY; | |
2870 | } | |
2871 | ||
2872 | finfo->dptr = ndata.cmd.dptr; | |
2873 | finfo->g = g; | |
2874 | ||
2875 | ndata.reqtype = REQTYPE_NORESP_NET_SG; | |
2876 | } | |
2877 | ||
2878 | if (skb_shinfo(skb)->gso_size) { | |
2879 | struct octeon_instr_irh *irh = | |
2880 | (struct octeon_instr_irh *)&ndata.cmd.irh; | |
2881 | union tx_info *tx_info = (union tx_info *)&ndata.cmd.ossp[0]; | |
2882 | ||
2883 | irh->len = 1; /* to indicate that ossp[0] contains tx_info */ | |
2884 | tx_info->s.gso_size = skb_shinfo(skb)->gso_size; | |
2885 | tx_info->s.gso_segs = skb_shinfo(skb)->gso_segs; | |
2886 | } | |
2887 | ||
2888 | xmit_more = skb->xmit_more; | |
2889 | ||
2890 | if (unlikely(cmdsetup.s.timestamp)) | |
2891 | status = send_nic_timestamp_pkt(oct, &ndata, finfo, xmit_more); | |
2892 | else | |
2893 | status = octnet_send_nic_data_pkt(oct, &ndata, xmit_more); | |
2894 | if (status == IQ_SEND_FAILED) | |
2895 | goto lio_xmit_failed; | |
2896 | ||
2897 | netif_info(lio, tx_queued, lio->netdev, "Transmit queued successfully\n"); | |
2898 | ||
2899 | if (status == IQ_SEND_STOP) | |
2900 | stop_q(lio->netdev, q_idx); | |
2901 | ||
2902 | netdev->trans_start = jiffies; | |
2903 | ||
2904 | stats->tx_done++; | |
2905 | stats->tx_tot_bytes += skb->len; | |
2906 | ||
2907 | return NETDEV_TX_OK; | |
2908 | ||
2909 | lio_xmit_failed: | |
2910 | stats->tx_dropped++; | |
2911 | netif_info(lio, tx_err, lio->netdev, "IQ%d Transmit dropped:%llu\n", | |
2912 | iq_no, stats->tx_dropped); | |
2913 | dma_unmap_single(&oct->pci_dev->dev, ndata.cmd.dptr, | |
2914 | ndata.datasize, DMA_TO_DEVICE); | |
2915 | recv_buffer_free(skb); | |
2916 | return NETDEV_TX_OK; | |
2917 | } | |
2918 | ||
2919 | /** \brief Network device Tx timeout | |
2920 | * @param netdev pointer to network device | |
2921 | */ | |
2922 | static void liquidio_tx_timeout(struct net_device *netdev) | |
2923 | { | |
2924 | struct lio *lio; | |
2925 | ||
2926 | lio = GET_LIO(netdev); | |
2927 | ||
2928 | netif_info(lio, tx_err, lio->netdev, | |
2929 | "Transmit timeout tx_dropped:%ld, waking up queues now!!\n", | |
2930 | netdev->stats.tx_dropped); | |
2931 | netdev->trans_start = jiffies; | |
2932 | txqs_wake(netdev); | |
2933 | } | |
2934 | ||
2935 | int liquidio_set_feature(struct net_device *netdev, int cmd) | |
2936 | { | |
2937 | struct lio *lio = GET_LIO(netdev); | |
2938 | struct octeon_device *oct = lio->oct_dev; | |
2939 | struct octnic_ctrl_pkt nctrl; | |
2940 | struct octnic_ctrl_params nparams; | |
2941 | int ret = 0; | |
2942 | ||
2943 | memset(&nctrl, 0, sizeof(struct octnic_ctrl_pkt)); | |
2944 | ||
2945 | nctrl.ncmd.u64 = 0; | |
2946 | nctrl.ncmd.s.cmd = cmd; | |
2947 | nctrl.ncmd.s.param1 = lio->linfo.ifidx; | |
2948 | nctrl.ncmd.s.param2 = OCTNIC_LROIPV4 | OCTNIC_LROIPV6; | |
2949 | nctrl.wait_time = 100; | |
2950 | nctrl.netpndev = (u64)netdev; | |
2951 | nctrl.cb_fn = liquidio_link_ctrl_cmd_completion; | |
2952 | ||
2953 | nparams.resp_order = OCTEON_RESP_NORESPONSE; | |
2954 | ||
2955 | ret = octnet_send_nic_ctrl_pkt(lio->oct_dev, &nctrl, nparams); | |
2956 | if (ret < 0) { | |
2957 | dev_err(&oct->pci_dev->dev, "Feature change failed in core (ret: 0x%x)\n", | |
2958 | ret); | |
2959 | } | |
2960 | return ret; | |
2961 | } | |
2962 | ||
2963 | /** \brief Net device fix features | |
2964 | * @param netdev pointer to network device | |
2965 | * @param request features requested | |
2966 | * @returns updated features list | |
2967 | */ | |
2968 | static netdev_features_t liquidio_fix_features(struct net_device *netdev, | |
2969 | netdev_features_t request) | |
2970 | { | |
2971 | struct lio *lio = netdev_priv(netdev); | |
2972 | ||
2973 | if ((request & NETIF_F_RXCSUM) && | |
2974 | !(lio->dev_capability & NETIF_F_RXCSUM)) | |
2975 | request &= ~NETIF_F_RXCSUM; | |
2976 | ||
2977 | if ((request & NETIF_F_HW_CSUM) && | |
2978 | !(lio->dev_capability & NETIF_F_HW_CSUM)) | |
2979 | request &= ~NETIF_F_HW_CSUM; | |
2980 | ||
2981 | if ((request & NETIF_F_TSO) && !(lio->dev_capability & NETIF_F_TSO)) | |
2982 | request &= ~NETIF_F_TSO; | |
2983 | ||
2984 | if ((request & NETIF_F_TSO6) && !(lio->dev_capability & NETIF_F_TSO6)) | |
2985 | request &= ~NETIF_F_TSO6; | |
2986 | ||
2987 | if ((request & NETIF_F_LRO) && !(lio->dev_capability & NETIF_F_LRO)) | |
2988 | request &= ~NETIF_F_LRO; | |
2989 | ||
2990 | /*Disable LRO if RXCSUM is off */ | |
2991 | if (!(request & NETIF_F_RXCSUM) && (netdev->features & NETIF_F_LRO) && | |
2992 | (lio->dev_capability & NETIF_F_LRO)) | |
2993 | request &= ~NETIF_F_LRO; | |
2994 | ||
2995 | return request; | |
2996 | } | |
2997 | ||
2998 | /** \brief Net device set features | |
2999 | * @param netdev pointer to network device | |
3000 | * @param features features to enable/disable | |
3001 | */ | |
3002 | static int liquidio_set_features(struct net_device *netdev, | |
3003 | netdev_features_t features) | |
3004 | { | |
3005 | struct lio *lio = netdev_priv(netdev); | |
3006 | ||
3007 | if (!((netdev->features ^ features) & NETIF_F_LRO)) | |
3008 | return 0; | |
3009 | ||
3010 | if ((features & NETIF_F_LRO) && (lio->dev_capability & NETIF_F_LRO)) | |
3011 | liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE); | |
3012 | else if (!(features & NETIF_F_LRO) && | |
3013 | (lio->dev_capability & NETIF_F_LRO)) | |
3014 | liquidio_set_feature(netdev, OCTNET_CMD_LRO_DISABLE); | |
3015 | ||
3016 | return 0; | |
3017 | } | |
3018 | ||
3019 | static struct net_device_ops lionetdevops = { | |
3020 | .ndo_open = liquidio_open, | |
3021 | .ndo_stop = liquidio_stop, | |
3022 | .ndo_start_xmit = liquidio_xmit, | |
3023 | .ndo_get_stats = liquidio_get_stats, | |
3024 | .ndo_set_mac_address = liquidio_set_mac, | |
3025 | .ndo_set_rx_mode = liquidio_set_mcast_list, | |
3026 | .ndo_tx_timeout = liquidio_tx_timeout, | |
3027 | .ndo_change_mtu = liquidio_change_mtu, | |
3028 | .ndo_do_ioctl = liquidio_ioctl, | |
3029 | .ndo_fix_features = liquidio_fix_features, | |
3030 | .ndo_set_features = liquidio_set_features, | |
3031 | }; | |
3032 | ||
3033 | /** \brief Entry point for the liquidio module | |
3034 | */ | |
3035 | static int __init liquidio_init(void) | |
3036 | { | |
3037 | int i; | |
3038 | struct handshake *hs; | |
3039 | ||
3040 | init_completion(&first_stage); | |
3041 | ||
3042 | octeon_init_device_list(conf_type); | |
3043 | ||
3044 | if (liquidio_init_pci()) | |
3045 | return -EINVAL; | |
3046 | ||
3047 | wait_for_completion_timeout(&first_stage, msecs_to_jiffies(1000)); | |
3048 | ||
3049 | for (i = 0; i < MAX_OCTEON_DEVICES; i++) { | |
3050 | hs = &handshake[i]; | |
3051 | if (hs->pci_dev) { | |
3052 | wait_for_completion(&hs->init); | |
3053 | if (!hs->init_ok) { | |
3054 | /* init handshake failed */ | |
3055 | dev_err(&hs->pci_dev->dev, | |
3056 | "Failed to init device\n"); | |
3057 | liquidio_deinit_pci(); | |
3058 | return -EIO; | |
3059 | } | |
3060 | } | |
3061 | } | |
3062 | ||
3063 | for (i = 0; i < MAX_OCTEON_DEVICES; i++) { | |
3064 | hs = &handshake[i]; | |
3065 | if (hs->pci_dev) { | |
3066 | wait_for_completion_timeout(&hs->started, | |
3067 | msecs_to_jiffies(30000)); | |
3068 | if (!hs->started_ok) { | |
3069 | /* starter handshake failed */ | |
3070 | dev_err(&hs->pci_dev->dev, | |
3071 | "Firmware failed to start\n"); | |
3072 | liquidio_deinit_pci(); | |
3073 | return -EIO; | |
3074 | } | |
3075 | } | |
3076 | } | |
3077 | ||
3078 | return 0; | |
3079 | } | |
3080 | ||
5b173cf9 | 3081 | static int lio_nic_info(struct octeon_recv_info *recv_info, void *buf) |
f21fb3ed RV |
3082 | { |
3083 | struct octeon_device *oct = (struct octeon_device *)buf; | |
3084 | struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt; | |
3085 | int ifidx = 0; | |
3086 | union oct_link_status *ls; | |
3087 | int i; | |
3088 | ||
3089 | if ((recv_pkt->buffer_size[0] != sizeof(*ls)) || | |
3090 | (recv_pkt->rh.r_nic_info.ifidx > oct->ifcount)) { | |
3091 | dev_err(&oct->pci_dev->dev, "Malformed NIC_INFO, len=%d, ifidx=%d\n", | |
3092 | recv_pkt->buffer_size[0], | |
3093 | recv_pkt->rh.r_nic_info.ifidx); | |
3094 | goto nic_info_err; | |
3095 | } | |
3096 | ||
3097 | ifidx = recv_pkt->rh.r_nic_info.ifidx; | |
3098 | ls = (union oct_link_status *)get_rbd(recv_pkt->buffer_ptr[0]); | |
3099 | ||
3100 | octeon_swap_8B_data((u64 *)ls, (sizeof(union oct_link_status)) >> 3); | |
3101 | ||
3102 | update_link_status(oct->props[ifidx].netdev, ls); | |
3103 | ||
3104 | nic_info_err: | |
3105 | for (i = 0; i < recv_pkt->buffer_count; i++) | |
3106 | recv_buffer_free(recv_pkt->buffer_ptr[i]); | |
3107 | octeon_free_recv_info(recv_info); | |
3108 | return 0; | |
3109 | } | |
3110 | ||
3111 | /** | |
3112 | * \brief Setup network interfaces | |
3113 | * @param octeon_dev octeon device | |
3114 | * | |
3115 | * Called during init time for each device. It assumes the NIC | |
3116 | * is already up and running. The link information for each | |
3117 | * interface is passed in link_info. | |
3118 | */ | |
3119 | static int setup_nic_devices(struct octeon_device *octeon_dev) | |
3120 | { | |
3121 | struct lio *lio = NULL; | |
3122 | struct net_device *netdev; | |
3123 | u8 mac[6], i, j; | |
3124 | struct octeon_soft_command *sc; | |
3125 | struct liquidio_if_cfg_context *ctx; | |
3126 | struct liquidio_if_cfg_resp *resp; | |
3127 | struct octdev_props *props; | |
3128 | int retval, num_iqueues, num_oqueues, q_no; | |
3129 | u64 q_mask; | |
3130 | int num_cpus = num_online_cpus(); | |
3131 | union oct_nic_if_cfg if_cfg; | |
3132 | unsigned int base_queue; | |
3133 | unsigned int gmx_port_id; | |
3134 | u32 resp_size, ctx_size; | |
3135 | ||
3136 | /* This is to handle link status changes */ | |
3137 | octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC, | |
3138 | OPCODE_NIC_INFO, | |
3139 | lio_nic_info, octeon_dev); | |
3140 | ||
3141 | /* REQTYPE_RESP_NET and REQTYPE_SOFT_COMMAND do not have free functions. | |
3142 | * They are handled directly. | |
3143 | */ | |
3144 | octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET, | |
3145 | free_netbuf); | |
3146 | ||
3147 | octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_NORESP_NET_SG, | |
3148 | free_netsgbuf); | |
3149 | ||
3150 | octeon_register_reqtype_free_fn(octeon_dev, REQTYPE_RESP_NET_SG, | |
3151 | free_netsgbuf_with_resp); | |
3152 | ||
3153 | for (i = 0; i < octeon_dev->ifcount; i++) { | |
3154 | resp_size = sizeof(struct liquidio_if_cfg_resp); | |
3155 | ctx_size = sizeof(struct liquidio_if_cfg_context); | |
3156 | sc = (struct octeon_soft_command *) | |
3157 | octeon_alloc_soft_command(octeon_dev, 0, | |
3158 | resp_size, ctx_size); | |
3159 | resp = (struct liquidio_if_cfg_resp *)sc->virtrptr; | |
3160 | ctx = (struct liquidio_if_cfg_context *)sc->ctxptr; | |
3161 | ||
3162 | num_iqueues = | |
3163 | CFG_GET_NUM_TXQS_NIC_IF(octeon_get_conf(octeon_dev), i); | |
3164 | num_oqueues = | |
3165 | CFG_GET_NUM_RXQS_NIC_IF(octeon_get_conf(octeon_dev), i); | |
3166 | base_queue = | |
3167 | CFG_GET_BASE_QUE_NIC_IF(octeon_get_conf(octeon_dev), i); | |
3168 | gmx_port_id = | |
3169 | CFG_GET_GMXID_NIC_IF(octeon_get_conf(octeon_dev), i); | |
3170 | if (num_iqueues > num_cpus) | |
3171 | num_iqueues = num_cpus; | |
3172 | if (num_oqueues > num_cpus) | |
3173 | num_oqueues = num_cpus; | |
3174 | dev_dbg(&octeon_dev->pci_dev->dev, | |
3175 | "requesting config for interface %d, iqs %d, oqs %d\n", | |
3176 | i, num_iqueues, num_oqueues); | |
3177 | ACCESS_ONCE(ctx->cond) = 0; | |
3178 | ctx->octeon_id = lio_get_device_id(octeon_dev); | |
3179 | init_waitqueue_head(&ctx->wc); | |
3180 | ||
3181 | if_cfg.u64 = 0; | |
3182 | if_cfg.s.num_iqueues = num_iqueues; | |
3183 | if_cfg.s.num_oqueues = num_oqueues; | |
3184 | if_cfg.s.base_queue = base_queue; | |
3185 | if_cfg.s.gmx_port_id = gmx_port_id; | |
3186 | octeon_prepare_soft_command(octeon_dev, sc, OPCODE_NIC, | |
3187 | OPCODE_NIC_IF_CFG, i, | |
3188 | if_cfg.u64, 0); | |
3189 | ||
3190 | sc->callback = if_cfg_callback; | |
3191 | sc->callback_arg = sc; | |
3192 | sc->wait_time = 1000; | |
3193 | ||
3194 | retval = octeon_send_soft_command(octeon_dev, sc); | |
3195 | if (retval) { | |
3196 | dev_err(&octeon_dev->pci_dev->dev, | |
3197 | "iq/oq config failed status: %x\n", | |
3198 | retval); | |
3199 | /* Soft instr is freed by driver in case of failure. */ | |
3200 | goto setup_nic_dev_fail; | |
3201 | } | |
3202 | ||
3203 | /* Sleep on a wait queue till the cond flag indicates that the | |
3204 | * response arrived or timed-out. | |
3205 | */ | |
3206 | sleep_cond(&ctx->wc, &ctx->cond); | |
3207 | retval = resp->status; | |
3208 | if (retval) { | |
3209 | dev_err(&octeon_dev->pci_dev->dev, "iq/oq config failed\n"); | |
3210 | goto setup_nic_dev_fail; | |
3211 | } | |
3212 | ||
3213 | octeon_swap_8B_data((u64 *)(&resp->cfg_info), | |
3214 | (sizeof(struct liquidio_if_cfg_info)) >> 3); | |
3215 | ||
3216 | num_iqueues = hweight64(resp->cfg_info.iqmask); | |
3217 | num_oqueues = hweight64(resp->cfg_info.oqmask); | |
3218 | ||
3219 | if (!(num_iqueues) || !(num_oqueues)) { | |
3220 | dev_err(&octeon_dev->pci_dev->dev, | |
3221 | "Got bad iqueues (%016llx) or oqueues (%016llx) from firmware.\n", | |
3222 | resp->cfg_info.iqmask, | |
3223 | resp->cfg_info.oqmask); | |
3224 | goto setup_nic_dev_fail; | |
3225 | } | |
3226 | dev_dbg(&octeon_dev->pci_dev->dev, | |
3227 | "interface %d, iqmask %016llx, oqmask %016llx, numiqueues %d, numoqueues %d\n", | |
3228 | i, resp->cfg_info.iqmask, resp->cfg_info.oqmask, | |
3229 | num_iqueues, num_oqueues); | |
3230 | netdev = alloc_etherdev_mq(LIO_SIZE, num_iqueues); | |
3231 | ||
3232 | if (!netdev) { | |
3233 | dev_err(&octeon_dev->pci_dev->dev, "Device allocation failed\n"); | |
3234 | goto setup_nic_dev_fail; | |
3235 | } | |
3236 | ||
3237 | props = &octeon_dev->props[i]; | |
3238 | props->netdev = netdev; | |
3239 | ||
3240 | if (num_iqueues > 1) | |
3241 | lionetdevops.ndo_select_queue = select_q; | |
3242 | ||
3243 | /* Associate the routines that will handle different | |
3244 | * netdev tasks. | |
3245 | */ | |
3246 | netdev->netdev_ops = &lionetdevops; | |
3247 | ||
3248 | lio = GET_LIO(netdev); | |
3249 | ||
3250 | memset(lio, 0, sizeof(struct lio)); | |
3251 | ||
3252 | lio->linfo.ifidx = resp->cfg_info.ifidx; | |
3253 | lio->ifidx = resp->cfg_info.ifidx; | |
3254 | ||
3255 | lio->linfo.num_rxpciq = num_oqueues; | |
3256 | lio->linfo.num_txpciq = num_iqueues; | |
3257 | q_mask = resp->cfg_info.oqmask; | |
3258 | /* q_mask is 0-based and already verified mask is nonzero */ | |
3259 | for (j = 0; j < num_oqueues; j++) { | |
3260 | q_no = __ffs64(q_mask); | |
3261 | q_mask &= (~(1UL << q_no)); | |
3262 | lio->linfo.rxpciq[j] = q_no; | |
3263 | } | |
3264 | q_mask = resp->cfg_info.iqmask; | |
3265 | for (j = 0; j < num_iqueues; j++) { | |
3266 | q_no = __ffs64(q_mask); | |
3267 | q_mask &= (~(1UL << q_no)); | |
3268 | lio->linfo.txpciq[j] = q_no; | |
3269 | } | |
3270 | lio->linfo.hw_addr = resp->cfg_info.linfo.hw_addr; | |
3271 | lio->linfo.gmxport = resp->cfg_info.linfo.gmxport; | |
3272 | lio->linfo.link.u64 = resp->cfg_info.linfo.link.u64; | |
3273 | ||
3274 | lio->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); | |
3275 | ||
3276 | lio->dev_capability = NETIF_F_HIGHDMA | |
3277 | | NETIF_F_IP_CSUM | NETIF_F_IPV6_CSUM | |
3278 | | NETIF_F_SG | NETIF_F_RXCSUM | |
3279 | | NETIF_F_TSO | NETIF_F_TSO6 | |
3280 | | NETIF_F_LRO; | |
3281 | netif_set_gso_max_size(netdev, OCTNIC_GSO_MAX_SIZE); | |
3282 | ||
3283 | netdev->features = lio->dev_capability; | |
3284 | netdev->vlan_features = lio->dev_capability; | |
3285 | ||
3286 | netdev->hw_features = lio->dev_capability; | |
3287 | ||
3288 | /* Point to the properties for octeon device to which this | |
3289 | * interface belongs. | |
3290 | */ | |
3291 | lio->oct_dev = octeon_dev; | |
3292 | lio->octprops = props; | |
3293 | lio->netdev = netdev; | |
3294 | spin_lock_init(&lio->lock); | |
3295 | ||
3296 | dev_dbg(&octeon_dev->pci_dev->dev, | |
3297 | "if%d gmx: %d hw_addr: 0x%llx\n", i, | |
3298 | lio->linfo.gmxport, CVM_CAST64(lio->linfo.hw_addr)); | |
3299 | ||
3300 | /* 64-bit swap required on LE machines */ | |
3301 | octeon_swap_8B_data(&lio->linfo.hw_addr, 1); | |
3302 | for (j = 0; j < 6; j++) | |
3303 | mac[j] = *((u8 *)(((u8 *)&lio->linfo.hw_addr) + 2 + j)); | |
3304 | ||
3305 | /* Copy MAC Address to OS network device structure */ | |
3306 | ||
3307 | ether_addr_copy(netdev->dev_addr, mac); | |
3308 | ||
3309 | if (setup_io_queues(octeon_dev, netdev)) { | |
3310 | dev_err(&octeon_dev->pci_dev->dev, "I/O queues creation failed\n"); | |
3311 | goto setup_nic_dev_fail; | |
3312 | } | |
3313 | ||
3314 | ifstate_set(lio, LIO_IFSTATE_DROQ_OPS); | |
3315 | ||
3316 | /* By default all interfaces on a single Octeon uses the same | |
3317 | * tx and rx queues | |
3318 | */ | |
3319 | lio->txq = lio->linfo.txpciq[0]; | |
3320 | lio->rxq = lio->linfo.rxpciq[0]; | |
3321 | ||
3322 | lio->tx_qsize = octeon_get_tx_qsize(octeon_dev, lio->txq); | |
3323 | lio->rx_qsize = octeon_get_rx_qsize(octeon_dev, lio->rxq); | |
3324 | ||
3325 | if (setup_glist(lio)) { | |
3326 | dev_err(&octeon_dev->pci_dev->dev, | |
3327 | "Gather list allocation failed\n"); | |
3328 | goto setup_nic_dev_fail; | |
3329 | } | |
3330 | ||
3331 | /* Register ethtool support */ | |
3332 | liquidio_set_ethtool_ops(netdev); | |
3333 | ||
3334 | liquidio_set_feature(netdev, OCTNET_CMD_LRO_ENABLE); | |
3335 | ||
3336 | if ((debug != -1) && (debug & NETIF_MSG_HW)) | |
3337 | liquidio_set_feature(netdev, OCTNET_CMD_VERBOSE_ENABLE); | |
3338 | ||
3339 | /* Register the network device with the OS */ | |
3340 | if (register_netdev(netdev)) { | |
3341 | dev_err(&octeon_dev->pci_dev->dev, "Device registration failed\n"); | |
3342 | goto setup_nic_dev_fail; | |
3343 | } | |
3344 | ||
3345 | dev_dbg(&octeon_dev->pci_dev->dev, | |
3346 | "Setup NIC ifidx:%d mac:%02x%02x%02x%02x%02x%02x\n", | |
3347 | i, mac[0], mac[1], mac[2], mac[3], mac[4], mac[5]); | |
3348 | netif_carrier_off(netdev); | |
3349 | ||
3350 | if (lio->linfo.link.s.status) { | |
3351 | netif_carrier_on(netdev); | |
3352 | start_txq(netdev); | |
3353 | } else { | |
3354 | netif_carrier_off(netdev); | |
3355 | } | |
3356 | ||
3357 | ifstate_set(lio, LIO_IFSTATE_REGISTERED); | |
3358 | ||
3359 | dev_dbg(&octeon_dev->pci_dev->dev, | |
3360 | "NIC ifidx:%d Setup successful\n", i); | |
3361 | ||
3362 | octeon_free_soft_command(octeon_dev, sc); | |
3363 | } | |
3364 | ||
3365 | return 0; | |
3366 | ||
3367 | setup_nic_dev_fail: | |
3368 | ||
3369 | octeon_free_soft_command(octeon_dev, sc); | |
3370 | ||
3371 | while (i--) { | |
3372 | dev_err(&octeon_dev->pci_dev->dev, | |
3373 | "NIC ifidx:%d Setup failed\n", i); | |
3374 | liquidio_destroy_nic_device(octeon_dev, i); | |
3375 | } | |
3376 | return -ENODEV; | |
3377 | } | |
3378 | ||
3379 | /** | |
3380 | * \brief initialize the NIC | |
3381 | * @param oct octeon device | |
3382 | * | |
3383 | * This initialization routine is called once the Octeon device application is | |
3384 | * up and running | |
3385 | */ | |
3386 | static int liquidio_init_nic_module(struct octeon_device *oct) | |
3387 | { | |
3388 | struct oct_intrmod_cfg *intrmod_cfg; | |
3389 | int retval = 0; | |
3390 | int num_nic_ports = CFG_GET_NUM_NIC_PORTS(octeon_get_conf(oct)); | |
3391 | ||
3392 | dev_dbg(&oct->pci_dev->dev, "Initializing network interfaces\n"); | |
3393 | ||
3394 | /* only default iq and oq were initialized | |
3395 | * initialize the rest as well | |
3396 | */ | |
3397 | /* run port_config command for each port */ | |
3398 | oct->ifcount = num_nic_ports; | |
3399 | ||
3400 | memset(oct->props, 0, | |
3401 | sizeof(struct octdev_props) * num_nic_ports); | |
3402 | ||
3403 | retval = setup_nic_devices(oct); | |
3404 | if (retval) { | |
3405 | dev_err(&oct->pci_dev->dev, "Setup NIC devices failed\n"); | |
3406 | goto octnet_init_failure; | |
3407 | } | |
3408 | ||
3409 | liquidio_ptp_init(oct); | |
3410 | ||
3411 | /* Initialize interrupt moderation params */ | |
3412 | intrmod_cfg = &((struct octeon_device *)oct)->intrmod; | |
3413 | intrmod_cfg->intrmod_enable = 1; | |
3414 | intrmod_cfg->intrmod_check_intrvl = LIO_INTRMOD_CHECK_INTERVAL; | |
3415 | intrmod_cfg->intrmod_maxpkt_ratethr = LIO_INTRMOD_MAXPKT_RATETHR; | |
3416 | intrmod_cfg->intrmod_minpkt_ratethr = LIO_INTRMOD_MINPKT_RATETHR; | |
3417 | intrmod_cfg->intrmod_maxcnt_trigger = LIO_INTRMOD_MAXCNT_TRIGGER; | |
3418 | intrmod_cfg->intrmod_maxtmr_trigger = LIO_INTRMOD_MAXTMR_TRIGGER; | |
3419 | intrmod_cfg->intrmod_mintmr_trigger = LIO_INTRMOD_MINTMR_TRIGGER; | |
3420 | intrmod_cfg->intrmod_mincnt_trigger = LIO_INTRMOD_MINCNT_TRIGGER; | |
3421 | ||
3422 | dev_dbg(&oct->pci_dev->dev, "Network interfaces ready\n"); | |
3423 | ||
3424 | return retval; | |
3425 | ||
3426 | octnet_init_failure: | |
3427 | ||
3428 | oct->ifcount = 0; | |
3429 | ||
3430 | return retval; | |
3431 | } | |
3432 | ||
3433 | /** | |
3434 | * \brief starter callback that invokes the remaining initialization work after | |
3435 | * the NIC is up and running. | |
3436 | * @param octptr work struct work_struct | |
3437 | */ | |
3438 | static void nic_starter(struct work_struct *work) | |
3439 | { | |
3440 | struct octeon_device *oct; | |
3441 | struct cavium_wk *wk = (struct cavium_wk *)work; | |
3442 | ||
3443 | oct = (struct octeon_device *)wk->ctxptr; | |
3444 | ||
3445 | if (atomic_read(&oct->status) == OCT_DEV_RUNNING) | |
3446 | return; | |
3447 | ||
3448 | /* If the status of the device is CORE_OK, the core | |
3449 | * application has reported its application type. Call | |
3450 | * any registered handlers now and move to the RUNNING | |
3451 | * state. | |
3452 | */ | |
3453 | if (atomic_read(&oct->status) != OCT_DEV_CORE_OK) { | |
3454 | schedule_delayed_work(&oct->nic_poll_work.work, | |
3455 | LIQUIDIO_STARTER_POLL_INTERVAL_MS); | |
3456 | return; | |
3457 | } | |
3458 | ||
3459 | atomic_set(&oct->status, OCT_DEV_RUNNING); | |
3460 | ||
3461 | if (oct->app_mode && oct->app_mode == CVM_DRV_NIC_APP) { | |
3462 | dev_dbg(&oct->pci_dev->dev, "Starting NIC module\n"); | |
3463 | ||
3464 | if (liquidio_init_nic_module(oct)) | |
3465 | dev_err(&oct->pci_dev->dev, "NIC initialization failed\n"); | |
3466 | else | |
3467 | handshake[oct->octeon_id].started_ok = 1; | |
3468 | } else { | |
3469 | dev_err(&oct->pci_dev->dev, | |
3470 | "Unexpected application running on NIC (%d). Check firmware.\n", | |
3471 | oct->app_mode); | |
3472 | } | |
3473 | ||
3474 | complete(&handshake[oct->octeon_id].started); | |
3475 | } | |
3476 | ||
3477 | /** | |
3478 | * \brief Device initialization for each Octeon device that is probed | |
3479 | * @param octeon_dev octeon device | |
3480 | */ | |
3481 | static int octeon_device_init(struct octeon_device *octeon_dev) | |
3482 | { | |
3483 | int j, ret; | |
3484 | struct octeon_device_priv *oct_priv = | |
3485 | (struct octeon_device_priv *)octeon_dev->priv; | |
3486 | atomic_set(&octeon_dev->status, OCT_DEV_BEGIN_STATE); | |
3487 | ||
3488 | /* Enable access to the octeon device and make its DMA capability | |
3489 | * known to the OS. | |
3490 | */ | |
3491 | if (octeon_pci_os_setup(octeon_dev)) | |
3492 | return 1; | |
3493 | ||
3494 | /* Identify the Octeon type and map the BAR address space. */ | |
3495 | if (octeon_chip_specific_setup(octeon_dev)) { | |
3496 | dev_err(&octeon_dev->pci_dev->dev, "Chip specific setup failed\n"); | |
3497 | return 1; | |
3498 | } | |
3499 | ||
3500 | atomic_set(&octeon_dev->status, OCT_DEV_PCI_MAP_DONE); | |
3501 | ||
3502 | octeon_dev->app_mode = CVM_DRV_INVALID_APP; | |
3503 | ||
3504 | /* Do a soft reset of the Octeon device. */ | |
3505 | if (octeon_dev->fn_list.soft_reset(octeon_dev)) | |
3506 | return 1; | |
3507 | ||
3508 | /* Initialize the dispatch mechanism used to push packets arriving on | |
3509 | * Octeon Output queues. | |
3510 | */ | |
3511 | if (octeon_init_dispatch_list(octeon_dev)) | |
3512 | return 1; | |
3513 | ||
3514 | octeon_register_dispatch_fn(octeon_dev, OPCODE_NIC, | |
3515 | OPCODE_NIC_CORE_DRV_ACTIVE, | |
3516 | octeon_core_drv_init, | |
3517 | octeon_dev); | |
3518 | ||
3519 | INIT_DELAYED_WORK(&octeon_dev->nic_poll_work.work, nic_starter); | |
3520 | octeon_dev->nic_poll_work.ctxptr = (void *)octeon_dev; | |
3521 | schedule_delayed_work(&octeon_dev->nic_poll_work.work, | |
3522 | LIQUIDIO_STARTER_POLL_INTERVAL_MS); | |
3523 | ||
3524 | atomic_set(&octeon_dev->status, OCT_DEV_DISPATCH_INIT_DONE); | |
3525 | ||
3526 | octeon_set_io_queues_off(octeon_dev); | |
3527 | ||
3528 | /* Setup the data structures that manage this Octeon's Input queues. */ | |
3529 | if (octeon_setup_instr_queues(octeon_dev)) { | |
3530 | dev_err(&octeon_dev->pci_dev->dev, | |
3531 | "instruction queue initialization failed\n"); | |
3532 | /* On error, release any previously allocated queues */ | |
3533 | for (j = 0; j < octeon_dev->num_iqs; j++) | |
3534 | octeon_delete_instr_queue(octeon_dev, j); | |
3535 | return 1; | |
3536 | } | |
3537 | atomic_set(&octeon_dev->status, OCT_DEV_INSTR_QUEUE_INIT_DONE); | |
3538 | ||
3539 | /* Initialize soft command buffer pool | |
3540 | */ | |
3541 | if (octeon_setup_sc_buffer_pool(octeon_dev)) { | |
3542 | dev_err(&octeon_dev->pci_dev->dev, "sc buffer pool allocation failed\n"); | |
3543 | return 1; | |
3544 | } | |
3545 | atomic_set(&octeon_dev->status, OCT_DEV_SC_BUFF_POOL_INIT_DONE); | |
3546 | ||
3547 | /* Initialize lists to manage the requests of different types that | |
3548 | * arrive from user & kernel applications for this octeon device. | |
3549 | */ | |
3550 | if (octeon_setup_response_list(octeon_dev)) { | |
3551 | dev_err(&octeon_dev->pci_dev->dev, "Response list allocation failed\n"); | |
3552 | return 1; | |
3553 | } | |
3554 | atomic_set(&octeon_dev->status, OCT_DEV_RESP_LIST_INIT_DONE); | |
3555 | ||
3556 | if (octeon_setup_output_queues(octeon_dev)) { | |
3557 | dev_err(&octeon_dev->pci_dev->dev, "Output queue initialization failed\n"); | |
3558 | /* Release any previously allocated queues */ | |
3559 | for (j = 0; j < octeon_dev->num_oqs; j++) | |
3560 | octeon_delete_droq(octeon_dev, j); | |
3561 | } | |
3562 | ||
3563 | atomic_set(&octeon_dev->status, OCT_DEV_DROQ_INIT_DONE); | |
3564 | ||
3565 | /* The input and output queue registers were setup earlier (the queues | |
3566 | * were not enabled). Any additional registers that need to be | |
3567 | * programmed should be done now. | |
3568 | */ | |
3569 | ret = octeon_dev->fn_list.setup_device_regs(octeon_dev); | |
3570 | if (ret) { | |
3571 | dev_err(&octeon_dev->pci_dev->dev, | |
3572 | "Failed to configure device registers\n"); | |
3573 | return ret; | |
3574 | } | |
3575 | ||
3576 | /* Initialize the tasklet that handles output queue packet processing.*/ | |
3577 | dev_dbg(&octeon_dev->pci_dev->dev, "Initializing droq tasklet\n"); | |
3578 | tasklet_init(&oct_priv->droq_tasklet, octeon_droq_bh, | |
3579 | (unsigned long)octeon_dev); | |
3580 | ||
3581 | /* Setup the interrupt handler and record the INT SUM register address | |
3582 | */ | |
3583 | octeon_setup_interrupt(octeon_dev); | |
3584 | ||
3585 | /* Enable Octeon device interrupts */ | |
3586 | octeon_dev->fn_list.enable_interrupt(octeon_dev->chip); | |
3587 | ||
3588 | /* Enable the input and output queues for this Octeon device */ | |
3589 | octeon_dev->fn_list.enable_io_queues(octeon_dev); | |
3590 | ||
3591 | atomic_set(&octeon_dev->status, OCT_DEV_IO_QUEUES_DONE); | |
3592 | ||
3593 | dev_dbg(&octeon_dev->pci_dev->dev, "Waiting for DDR initialization...\n"); | |
3594 | ||
3595 | if (ddr_timeout == 0) { | |
3596 | dev_info(&octeon_dev->pci_dev->dev, | |
3597 | "WAITING. Set ddr_timeout to non-zero value to proceed with initialization.\n"); | |
3598 | } | |
3599 | ||
3600 | schedule_timeout_uninterruptible(HZ * LIO_RESET_SECS); | |
3601 | ||
3602 | /* Wait for the octeon to initialize DDR after the soft-reset. */ | |
3603 | ret = octeon_wait_for_ddr_init(octeon_dev, &ddr_timeout); | |
3604 | if (ret) { | |
3605 | dev_err(&octeon_dev->pci_dev->dev, | |
3606 | "DDR not initialized. Please confirm that board is configured to boot from Flash, ret: %d\n", | |
3607 | ret); | |
3608 | return 1; | |
3609 | } | |
3610 | ||
3611 | if (octeon_wait_for_bootloader(octeon_dev, 1000) != 0) { | |
3612 | dev_err(&octeon_dev->pci_dev->dev, "Board not responding\n"); | |
3613 | return 1; | |
3614 | } | |
3615 | ||
3616 | dev_dbg(&octeon_dev->pci_dev->dev, "Initializing consoles\n"); | |
3617 | ret = octeon_init_consoles(octeon_dev); | |
3618 | if (ret) { | |
3619 | dev_err(&octeon_dev->pci_dev->dev, "Could not access board consoles\n"); | |
3620 | return 1; | |
3621 | } | |
3622 | ret = octeon_add_console(octeon_dev, 0); | |
3623 | if (ret) { | |
3624 | dev_err(&octeon_dev->pci_dev->dev, "Could not access board console\n"); | |
3625 | return 1; | |
3626 | } | |
3627 | ||
3628 | atomic_set(&octeon_dev->status, OCT_DEV_CONSOLE_INIT_DONE); | |
3629 | ||
3630 | dev_dbg(&octeon_dev->pci_dev->dev, "Loading firmware\n"); | |
3631 | ret = load_firmware(octeon_dev); | |
3632 | if (ret) { | |
3633 | dev_err(&octeon_dev->pci_dev->dev, "Could not load firmware to board\n"); | |
3634 | return 1; | |
3635 | } | |
3636 | ||
3637 | handshake[octeon_dev->octeon_id].init_ok = 1; | |
3638 | complete(&handshake[octeon_dev->octeon_id].init); | |
3639 | ||
3640 | atomic_set(&octeon_dev->status, OCT_DEV_HOST_OK); | |
3641 | ||
3642 | /* Send Credit for Octeon Output queues. Credits are always sent after | |
3643 | * the output queue is enabled. | |
3644 | */ | |
3645 | for (j = 0; j < octeon_dev->num_oqs; j++) | |
3646 | writel(octeon_dev->droq[j]->max_count, | |
3647 | octeon_dev->droq[j]->pkts_credit_reg); | |
3648 | ||
3649 | /* Packets can start arriving on the output queues from this point. */ | |
3650 | ||
3651 | return 0; | |
3652 | } | |
3653 | ||
3654 | /** | |
3655 | * \brief Exits the module | |
3656 | */ | |
3657 | static void __exit liquidio_exit(void) | |
3658 | { | |
3659 | liquidio_deinit_pci(); | |
3660 | ||
3661 | pr_info("LiquidIO network module is now unloaded\n"); | |
3662 | } | |
3663 | ||
3664 | module_init(liquidio_init); | |
3665 | module_exit(liquidio_exit); |