1 /**********************************************************************
4 * Contact: support@cavium.com
5 * Please include "LiquidIO" in the subject.
7 * Copyright (c) 2003-2016 Cavium, Inc.
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.
13 * This file is distributed in the hope that it will be useful, but
14 * AS-IS and WITHOUT ANY WARRANTY; without even the implied warranty
15 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, TITLE, or
16 * NONINFRINGEMENT. See the GNU General Public License for more details.
17 ***********************************************************************/
18 #include <linux/pci.h>
19 #include <linux/netdevice.h>
20 #include <linux/vmalloc.h>
21 #include "liquidio_common.h"
22 #include "octeon_droq.h"
23 #include "octeon_iq.h"
24 #include "response_manager.h"
25 #include "octeon_device.h"
26 #include "octeon_main.h"
27 #include "octeon_network.h"
28 #include "cn66xx_regs.h"
29 #include "cn66xx_device.h"
30 #include "cn23xx_pf_device.h"
31 #include "cn23xx_vf_device.h"
33 /** Default configuration
34 * for CN66XX OCTEON Models.
36 static struct octeon_config default_cn66xx_conf = {
37 .card_type = LIO_210SV,
38 .card_name = LIO_210SV_NAME,
42 .max_iqs = CN6XXX_CFG_IO_QUEUES,
44 (CN6XXX_MAX_IQ_DESCRIPTORS * CN6XXX_CFG_IO_QUEUES),
45 .instr_type = OCTEON_64BYTE_INSTR,
46 .db_min = CN6XXX_DB_MIN,
47 .db_timeout = CN6XXX_DB_TIMEOUT,
53 .max_oqs = CN6XXX_CFG_IO_QUEUES,
54 .refill_threshold = CN6XXX_OQ_REFIL_THRESHOLD,
55 .oq_intr_pkt = CN6XXX_OQ_INTR_PKT,
56 .oq_intr_time = CN6XXX_OQ_INTR_TIME,
57 .pkts_per_intr = CN6XXX_OQ_PKTSPER_INTR,
61 .num_nic_ports = DEFAULT_NUM_NIC_PORTS_66XX,
62 .num_def_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
63 .num_def_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
64 .def_rx_buf_size = CN6XXX_OQ_BUF_SIZE,
66 /* For ethernet interface 0: Port cfg Attributes */
68 /* Max Txqs: Half for each of the two ports :max_iq/2 */
69 .max_txqs = MAX_TXQS_PER_INTF,
71 /* Actual configured value. Range could be: 1...max_txqs */
72 .num_txqs = DEF_TXQS_PER_INTF,
74 /* Max Rxqs: Half for each of the two ports :max_oq/2 */
75 .max_rxqs = MAX_RXQS_PER_INTF,
77 /* Actual configured value. Range could be: 1...max_rxqs */
78 .num_rxqs = DEF_RXQS_PER_INTF,
80 /* Num of desc for rx rings */
81 .num_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
83 /* Num of desc for tx rings */
84 .num_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
86 /* SKB size, We need not change buf size even for Jumbo frames.
87 * Octeon can send jumbo frames in 4 consecutive descriptors,
89 .rx_buf_size = CN6XXX_OQ_BUF_SIZE,
91 .base_queue = BASE_QUEUE_NOT_REQUESTED,
97 /* Max Txqs: Half for each of the two ports :max_iq/2 */
98 .max_txqs = MAX_TXQS_PER_INTF,
100 /* Actual configured value. Range could be: 1...max_txqs */
101 .num_txqs = DEF_TXQS_PER_INTF,
103 /* Max Rxqs: Half for each of the two ports :max_oq/2 */
104 .max_rxqs = MAX_RXQS_PER_INTF,
106 /* Actual configured value. Range could be: 1...max_rxqs */
107 .num_rxqs = DEF_RXQS_PER_INTF,
109 /* Num of desc for rx rings */
110 .num_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
112 /* Num of desc for tx rings */
113 .num_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
115 /* SKB size, We need not change buf size even for Jumbo frames.
116 * Octeon can send jumbo frames in 4 consecutive descriptors,
118 .rx_buf_size = CN6XXX_OQ_BUF_SIZE,
120 .base_queue = BASE_QUEUE_NOT_REQUESTED,
125 /** Miscellaneous attributes */
127 /* Host driver link query interval */
128 .oct_link_query_interval = 100,
130 /* Octeon link query interval */
131 .host_link_query_interval = 500,
133 .enable_sli_oq_bp = 0,
135 /* Control queue group */
141 /** Default configuration
142 * for CN68XX OCTEON Model.
145 static struct octeon_config default_cn68xx_conf = {
146 .card_type = LIO_410NV,
147 .card_name = LIO_410NV_NAME,
151 .max_iqs = CN6XXX_CFG_IO_QUEUES,
153 (CN6XXX_MAX_IQ_DESCRIPTORS * CN6XXX_CFG_IO_QUEUES),
154 .instr_type = OCTEON_64BYTE_INSTR,
155 .db_min = CN6XXX_DB_MIN,
156 .db_timeout = CN6XXX_DB_TIMEOUT,
162 .max_oqs = CN6XXX_CFG_IO_QUEUES,
163 .refill_threshold = CN6XXX_OQ_REFIL_THRESHOLD,
164 .oq_intr_pkt = CN6XXX_OQ_INTR_PKT,
165 .oq_intr_time = CN6XXX_OQ_INTR_TIME,
166 .pkts_per_intr = CN6XXX_OQ_PKTSPER_INTR,
170 .num_nic_ports = DEFAULT_NUM_NIC_PORTS_68XX,
171 .num_def_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
172 .num_def_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
173 .def_rx_buf_size = CN6XXX_OQ_BUF_SIZE,
176 /* Max Txqs: Half for each of the two ports :max_iq/2 */
177 .max_txqs = MAX_TXQS_PER_INTF,
179 /* Actual configured value. Range could be: 1...max_txqs */
180 .num_txqs = DEF_TXQS_PER_INTF,
182 /* Max Rxqs: Half for each of the two ports :max_oq/2 */
183 .max_rxqs = MAX_RXQS_PER_INTF,
185 /* Actual configured value. Range could be: 1...max_rxqs */
186 .num_rxqs = DEF_RXQS_PER_INTF,
188 /* Num of desc for rx rings */
189 .num_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
191 /* Num of desc for tx rings */
192 .num_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
194 /* SKB size, We need not change buf size even for Jumbo frames.
195 * Octeon can send jumbo frames in 4 consecutive descriptors,
197 .rx_buf_size = CN6XXX_OQ_BUF_SIZE,
199 .base_queue = BASE_QUEUE_NOT_REQUESTED,
205 /* Max Txqs: Half for each of the two ports :max_iq/2 */
206 .max_txqs = MAX_TXQS_PER_INTF,
208 /* Actual configured value. Range could be: 1...max_txqs */
209 .num_txqs = DEF_TXQS_PER_INTF,
211 /* Max Rxqs: Half for each of the two ports :max_oq/2 */
212 .max_rxqs = MAX_RXQS_PER_INTF,
214 /* Actual configured value. Range could be: 1...max_rxqs */
215 .num_rxqs = DEF_RXQS_PER_INTF,
217 /* Num of desc for rx rings */
218 .num_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
220 /* Num of desc for tx rings */
221 .num_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
223 /* SKB size, We need not change buf size even for Jumbo frames.
224 * Octeon can send jumbo frames in 4 consecutive descriptors,
226 .rx_buf_size = CN6XXX_OQ_BUF_SIZE,
228 .base_queue = BASE_QUEUE_NOT_REQUESTED,
234 /* Max Txqs: Half for each of the two ports :max_iq/2 */
235 .max_txqs = MAX_TXQS_PER_INTF,
237 /* Actual configured value. Range could be: 1...max_txqs */
238 .num_txqs = DEF_TXQS_PER_INTF,
240 /* Max Rxqs: Half for each of the two ports :max_oq/2 */
241 .max_rxqs = MAX_RXQS_PER_INTF,
243 /* Actual configured value. Range could be: 1...max_rxqs */
244 .num_rxqs = DEF_RXQS_PER_INTF,
246 /* Num of desc for rx rings */
247 .num_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
249 /* Num of desc for tx rings */
250 .num_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
252 /* SKB size, We need not change buf size even for Jumbo frames.
253 * Octeon can send jumbo frames in 4 consecutive descriptors,
255 .rx_buf_size = CN6XXX_OQ_BUF_SIZE,
257 .base_queue = BASE_QUEUE_NOT_REQUESTED,
263 /* Max Txqs: Half for each of the two ports :max_iq/2 */
264 .max_txqs = MAX_TXQS_PER_INTF,
266 /* Actual configured value. Range could be: 1...max_txqs */
267 .num_txqs = DEF_TXQS_PER_INTF,
269 /* Max Rxqs: Half for each of the two ports :max_oq/2 */
270 .max_rxqs = MAX_RXQS_PER_INTF,
272 /* Actual configured value. Range could be: 1...max_rxqs */
273 .num_rxqs = DEF_RXQS_PER_INTF,
275 /* Num of desc for rx rings */
276 .num_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
278 /* Num of desc for tx rings */
279 .num_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
281 /* SKB size, We need not change buf size even for Jumbo frames.
282 * Octeon can send jumbo frames in 4 consecutive descriptors,
284 .rx_buf_size = CN6XXX_OQ_BUF_SIZE,
286 .base_queue = BASE_QUEUE_NOT_REQUESTED,
291 /** Miscellaneous attributes */
293 /* Host driver link query interval */
294 .oct_link_query_interval = 100,
296 /* Octeon link query interval */
297 .host_link_query_interval = 500,
299 .enable_sli_oq_bp = 0,
301 /* Control queue group */
307 /** Default configuration
308 * for CN68XX OCTEON Model.
310 static struct octeon_config default_cn68xx_210nv_conf = {
311 .card_type = LIO_210NV,
312 .card_name = LIO_210NV_NAME,
317 .max_iqs = CN6XXX_CFG_IO_QUEUES,
319 (CN6XXX_MAX_IQ_DESCRIPTORS * CN6XXX_CFG_IO_QUEUES),
320 .instr_type = OCTEON_64BYTE_INSTR,
321 .db_min = CN6XXX_DB_MIN,
322 .db_timeout = CN6XXX_DB_TIMEOUT,
328 .max_oqs = CN6XXX_CFG_IO_QUEUES,
329 .refill_threshold = CN6XXX_OQ_REFIL_THRESHOLD,
330 .oq_intr_pkt = CN6XXX_OQ_INTR_PKT,
331 .oq_intr_time = CN6XXX_OQ_INTR_TIME,
332 .pkts_per_intr = CN6XXX_OQ_PKTSPER_INTR,
336 .num_nic_ports = DEFAULT_NUM_NIC_PORTS_68XX_210NV,
337 .num_def_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
338 .num_def_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
339 .def_rx_buf_size = CN6XXX_OQ_BUF_SIZE,
342 /* Max Txqs: Half for each of the two ports :max_iq/2 */
343 .max_txqs = MAX_TXQS_PER_INTF,
345 /* Actual configured value. Range could be: 1...max_txqs */
346 .num_txqs = DEF_TXQS_PER_INTF,
348 /* Max Rxqs: Half for each of the two ports :max_oq/2 */
349 .max_rxqs = MAX_RXQS_PER_INTF,
351 /* Actual configured value. Range could be: 1...max_rxqs */
352 .num_rxqs = DEF_RXQS_PER_INTF,
354 /* Num of desc for rx rings */
355 .num_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
357 /* Num of desc for tx rings */
358 .num_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
360 /* SKB size, We need not change buf size even for Jumbo frames.
361 * Octeon can send jumbo frames in 4 consecutive descriptors,
363 .rx_buf_size = CN6XXX_OQ_BUF_SIZE,
365 .base_queue = BASE_QUEUE_NOT_REQUESTED,
371 /* Max Txqs: Half for each of the two ports :max_iq/2 */
372 .max_txqs = MAX_TXQS_PER_INTF,
374 /* Actual configured value. Range could be: 1...max_txqs */
375 .num_txqs = DEF_TXQS_PER_INTF,
377 /* Max Rxqs: Half for each of the two ports :max_oq/2 */
378 .max_rxqs = MAX_RXQS_PER_INTF,
380 /* Actual configured value. Range could be: 1...max_rxqs */
381 .num_rxqs = DEF_RXQS_PER_INTF,
383 /* Num of desc for rx rings */
384 .num_rx_descs = CN6XXX_MAX_OQ_DESCRIPTORS,
386 /* Num of desc for tx rings */
387 .num_tx_descs = CN6XXX_MAX_IQ_DESCRIPTORS,
389 /* SKB size, We need not change buf size even for Jumbo frames.
390 * Octeon can send jumbo frames in 4 consecutive descriptors,
392 .rx_buf_size = CN6XXX_OQ_BUF_SIZE,
394 .base_queue = BASE_QUEUE_NOT_REQUESTED,
399 /** Miscellaneous attributes */
401 /* Host driver link query interval */
402 .oct_link_query_interval = 100,
404 /* Octeon link query interval */
405 .host_link_query_interval = 500,
407 .enable_sli_oq_bp = 0,
409 /* Control queue group */
415 static struct octeon_config default_cn23xx_conf = {
416 .card_type = LIO_23XX,
417 .card_name = LIO_23XX_NAME,
420 .max_iqs = CN23XX_CFG_IO_QUEUES,
421 .pending_list_size = (CN23XX_DEFAULT_IQ_DESCRIPTORS *
422 CN23XX_CFG_IO_QUEUES),
423 .instr_type = OCTEON_64BYTE_INSTR,
424 .db_min = CN23XX_DB_MIN,
425 .db_timeout = CN23XX_DB_TIMEOUT,
426 .iq_intr_pkt = CN23XX_DEF_IQ_INTR_THRESHOLD,
431 .max_oqs = CN23XX_CFG_IO_QUEUES,
432 .pkts_per_intr = CN23XX_OQ_PKTSPER_INTR,
433 .refill_threshold = CN23XX_OQ_REFIL_THRESHOLD,
434 .oq_intr_pkt = CN23XX_OQ_INTR_PKT,
435 .oq_intr_time = CN23XX_OQ_INTR_TIME,
438 .num_nic_ports = DEFAULT_NUM_NIC_PORTS_23XX,
439 .num_def_rx_descs = CN23XX_DEFAULT_OQ_DESCRIPTORS,
440 .num_def_tx_descs = CN23XX_DEFAULT_IQ_DESCRIPTORS,
441 .def_rx_buf_size = CN23XX_OQ_BUF_SIZE,
443 /* For ethernet interface 0: Port cfg Attributes */
445 /* Max Txqs: Half for each of the two ports :max_iq/2 */
446 .max_txqs = MAX_TXQS_PER_INTF,
448 /* Actual configured value. Range could be: 1...max_txqs */
449 .num_txqs = DEF_TXQS_PER_INTF,
451 /* Max Rxqs: Half for each of the two ports :max_oq/2 */
452 .max_rxqs = MAX_RXQS_PER_INTF,
454 /* Actual configured value. Range could be: 1...max_rxqs */
455 .num_rxqs = DEF_RXQS_PER_INTF,
457 /* Num of desc for rx rings */
458 .num_rx_descs = CN23XX_DEFAULT_OQ_DESCRIPTORS,
460 /* Num of desc for tx rings */
461 .num_tx_descs = CN23XX_DEFAULT_IQ_DESCRIPTORS,
463 /* SKB size, We need not change buf size even for Jumbo frames.
464 * Octeon can send jumbo frames in 4 consecutive descriptors,
466 .rx_buf_size = CN23XX_OQ_BUF_SIZE,
468 .base_queue = BASE_QUEUE_NOT_REQUESTED,
474 /* Max Txqs: Half for each of the two ports :max_iq/2 */
475 .max_txqs = MAX_TXQS_PER_INTF,
477 /* Actual configured value. Range could be: 1...max_txqs */
478 .num_txqs = DEF_TXQS_PER_INTF,
480 /* Max Rxqs: Half for each of the two ports :max_oq/2 */
481 .max_rxqs = MAX_RXQS_PER_INTF,
483 /* Actual configured value. Range could be: 1...max_rxqs */
484 .num_rxqs = DEF_RXQS_PER_INTF,
486 /* Num of desc for rx rings */
487 .num_rx_descs = CN23XX_DEFAULT_OQ_DESCRIPTORS,
489 /* Num of desc for tx rings */
490 .num_tx_descs = CN23XX_DEFAULT_IQ_DESCRIPTORS,
492 /* SKB size, We need not change buf size even for Jumbo frames.
493 * Octeon can send jumbo frames in 4 consecutive descriptors,
495 .rx_buf_size = CN23XX_OQ_BUF_SIZE,
497 .base_queue = BASE_QUEUE_NOT_REQUESTED,
503 /* Host driver link query interval */
504 .oct_link_query_interval = 100,
506 /* Octeon link query interval */
507 .host_link_query_interval = 500,
509 .enable_sli_oq_bp = 0,
511 /* Control queue group */
516 static struct octeon_config_ptr {
518 } oct_conf_info[MAX_OCTEON_DEVICES] = {
520 OCTEON_CONFIG_TYPE_DEFAULT,
522 OCTEON_CONFIG_TYPE_DEFAULT,
524 OCTEON_CONFIG_TYPE_DEFAULT,
526 OCTEON_CONFIG_TYPE_DEFAULT,
530 static char oct_dev_state_str[OCT_DEV_STATES + 1][32] = {
531 "BEGIN", "PCI-ENABLE-DONE", "PCI-MAP-DONE", "DISPATCH-INIT-DONE",
532 "IQ-INIT-DONE", "SCBUFF-POOL-INIT-DONE", "RESPLIST-INIT-DONE",
533 "DROQ-INIT-DONE", "MBOX-SETUP-DONE", "MSIX-ALLOC-VECTOR-DONE",
534 "INTR-SET-DONE", "IO-QUEUES-INIT-DONE", "CONSOLE-INIT-DONE",
535 "HOST-READY", "CORE-READY", "RUNNING", "IN-RESET",
539 static char oct_dev_app_str[CVM_DRV_APP_COUNT + 1][32] = {
540 "BASE", "NIC", "UNKNOWN"};
542 static struct octeon_device *octeon_device[MAX_OCTEON_DEVICES];
543 static atomic_t adapter_refcounts[MAX_OCTEON_DEVICES];
545 static u32 octeon_device_count;
546 /* locks device array (i.e. octeon_device[]) */
547 static spinlock_t octeon_devices_lock;
549 static struct octeon_core_setup core_setup[MAX_OCTEON_DEVICES];
551 static void oct_set_config_info(int oct_id, int conf_type)
553 if (conf_type < 0 || conf_type > (NUM_OCTEON_CONFS - 1))
554 conf_type = OCTEON_CONFIG_TYPE_DEFAULT;
555 oct_conf_info[oct_id].conf_type = conf_type;
558 void octeon_init_device_list(int conf_type)
562 memset(octeon_device, 0, (sizeof(void *) * MAX_OCTEON_DEVICES));
563 for (i = 0; i < MAX_OCTEON_DEVICES; i++)
564 oct_set_config_info(i, conf_type);
565 spin_lock_init(&octeon_devices_lock);
568 static void *__retrieve_octeon_config_info(struct octeon_device *oct,
571 u32 oct_id = oct->octeon_id;
574 switch (oct_conf_info[oct_id].conf_type) {
575 case OCTEON_CONFIG_TYPE_DEFAULT:
576 if (oct->chip_id == OCTEON_CN66XX) {
577 ret = &default_cn66xx_conf;
578 } else if ((oct->chip_id == OCTEON_CN68XX) &&
579 (card_type == LIO_210NV)) {
580 ret = &default_cn68xx_210nv_conf;
581 } else if ((oct->chip_id == OCTEON_CN68XX) &&
582 (card_type == LIO_410NV)) {
583 ret = &default_cn68xx_conf;
584 } else if (oct->chip_id == OCTEON_CN23XX_PF_VID) {
585 ret = &default_cn23xx_conf;
586 } else if (oct->chip_id == OCTEON_CN23XX_VF_VID) {
587 ret = &default_cn23xx_conf;
596 static int __verify_octeon_config_info(struct octeon_device *oct, void *conf)
598 switch (oct->chip_id) {
601 return lio_validate_cn6xxx_config_info(oct, conf);
602 case OCTEON_CN23XX_PF_VID:
603 case OCTEON_CN23XX_VF_VID:
612 void *oct_get_config_info(struct octeon_device *oct, u16 card_type)
616 conf = __retrieve_octeon_config_info(oct, card_type);
620 if (__verify_octeon_config_info(oct, conf)) {
621 dev_err(&oct->pci_dev->dev, "Configuration verification failed\n");
628 char *lio_get_state_string(atomic_t *state_ptr)
630 s32 istate = (s32)atomic_read(state_ptr);
632 if (istate > OCT_DEV_STATES || istate < 0)
633 return oct_dev_state_str[OCT_DEV_STATE_INVALID];
634 return oct_dev_state_str[istate];
637 static char *get_oct_app_string(u32 app_mode)
639 if (app_mode <= CVM_DRV_APP_END)
640 return oct_dev_app_str[app_mode - CVM_DRV_APP_START];
641 return oct_dev_app_str[CVM_DRV_INVALID_APP - CVM_DRV_APP_START];
644 void octeon_free_device_mem(struct octeon_device *oct)
648 for (i = 0; i < MAX_OCTEON_OUTPUT_QUEUES(oct); i++) {
649 if (oct->io_qmask.oq & BIT_ULL(i))
653 for (i = 0; i < MAX_OCTEON_INSTR_QUEUES(oct); i++) {
654 if (oct->io_qmask.iq & BIT_ULL(i))
655 vfree(oct->instr_queue[i]);
661 octeon_device[i] = NULL;
662 octeon_device_count--;
665 static struct octeon_device *octeon_allocate_device_mem(u32 pci_id,
668 struct octeon_device *oct;
670 u32 octdevsize = 0, configsize = 0, size;
675 configsize = sizeof(struct octeon_cn6xxx);
678 case OCTEON_CN23XX_PF_VID:
679 configsize = sizeof(struct octeon_cn23xx_pf);
681 case OCTEON_CN23XX_VF_VID:
682 configsize = sizeof(struct octeon_cn23xx_vf);
685 pr_err("%s: Unknown PCI Device: 0x%x\n",
691 if (configsize & 0x7)
692 configsize += (8 - (configsize & 0x7));
694 octdevsize = sizeof(struct octeon_device);
695 if (octdevsize & 0x7)
696 octdevsize += (8 - (octdevsize & 0x7));
699 priv_size += (8 - (priv_size & 0x7));
701 size = octdevsize + priv_size + configsize +
702 (sizeof(struct octeon_dispatch) * DISPATCH_LIST_SIZE);
708 memset(buf, 0, size);
710 oct = (struct octeon_device *)buf;
711 oct->priv = (void *)(buf + octdevsize);
712 oct->chip = (void *)(buf + octdevsize + priv_size);
713 oct->dispatch.dlist = (struct octeon_dispatch *)
714 (buf + octdevsize + priv_size + configsize);
719 struct octeon_device *octeon_allocate_device(u32 pci_id,
723 struct octeon_device *oct = NULL;
725 spin_lock(&octeon_devices_lock);
727 for (oct_idx = 0; oct_idx < MAX_OCTEON_DEVICES; oct_idx++)
728 if (!octeon_device[oct_idx])
731 if (oct_idx < MAX_OCTEON_DEVICES) {
732 oct = octeon_allocate_device_mem(pci_id, priv_size);
734 octeon_device_count++;
735 octeon_device[oct_idx] = oct;
739 spin_unlock(&octeon_devices_lock);
743 spin_lock_init(&oct->pci_win_lock);
744 spin_lock_init(&oct->mem_access_lock);
746 oct->octeon_id = oct_idx;
747 snprintf(oct->device_name, sizeof(oct->device_name),
748 "LiquidIO%d", (oct->octeon_id));
753 /** Register a device's bus location at initialization time.
754 * @param octeon_dev - pointer to the octeon device structure.
755 * @param bus - PCIe bus #
756 * @param dev - PCIe device #
757 * @param func - PCIe function #
758 * @param is_pf - TRUE for PF, FALSE for VF
759 * @return reference count of device's adapter
761 int octeon_register_device(struct octeon_device *oct,
762 int bus, int dev, int func, int is_pf)
768 oct->loc.func = func;
770 oct->adapter_refcount = &adapter_refcounts[oct->octeon_id];
771 atomic_set(oct->adapter_refcount, 0);
773 spin_lock(&octeon_devices_lock);
774 for (idx = (int)oct->octeon_id - 1; idx >= 0; idx--) {
775 if (!octeon_device[idx]) {
776 dev_err(&oct->pci_dev->dev,
777 "%s: Internal driver error, missing dev",
779 spin_unlock(&octeon_devices_lock);
780 atomic_inc(oct->adapter_refcount);
781 return 1; /* here, refcount is guaranteed to be 1 */
783 /* if another device is at same bus/dev, use its refcounter */
784 if ((octeon_device[idx]->loc.bus == bus) &&
785 (octeon_device[idx]->loc.dev == dev)) {
786 oct->adapter_refcount =
787 octeon_device[idx]->adapter_refcount;
791 spin_unlock(&octeon_devices_lock);
793 atomic_inc(oct->adapter_refcount);
794 refcount = atomic_read(oct->adapter_refcount);
796 dev_dbg(&oct->pci_dev->dev, "%s: %02x:%02x:%d refcount %u", __func__,
797 oct->loc.bus, oct->loc.dev, oct->loc.func, refcount);
802 /** Deregister a device at de-initialization time.
803 * @param octeon_dev - pointer to the octeon device structure.
804 * @return reference count of device's adapter
806 int octeon_deregister_device(struct octeon_device *oct)
810 atomic_dec(oct->adapter_refcount);
811 refcount = atomic_read(oct->adapter_refcount);
813 dev_dbg(&oct->pci_dev->dev, "%s: %04d:%02d:%d refcount %u", __func__,
814 oct->loc.bus, oct->loc.dev, oct->loc.func, refcount);
820 octeon_allocate_ioq_vector(struct octeon_device *oct)
823 struct octeon_ioq_vector *ioq_vector;
827 if (OCTEON_CN23XX_PF(oct))
828 num_ioqs = oct->sriov_info.num_pf_rings;
829 else if (OCTEON_CN23XX_VF(oct))
830 num_ioqs = oct->sriov_info.rings_per_vf;
832 size = sizeof(struct octeon_ioq_vector) * num_ioqs;
834 oct->ioq_vector = vmalloc(size);
835 if (!oct->ioq_vector)
837 memset(oct->ioq_vector, 0, size);
838 for (i = 0; i < num_ioqs; i++) {
839 ioq_vector = &oct->ioq_vector[i];
840 ioq_vector->oct_dev = oct;
841 ioq_vector->iq_index = i;
842 ioq_vector->droq_index = i;
843 ioq_vector->mbox = oct->mbox[i];
845 cpu_num = i % num_online_cpus();
846 cpumask_set_cpu(cpu_num, &ioq_vector->affinity_mask);
848 if (oct->chip_id == OCTEON_CN23XX_PF_VID)
849 ioq_vector->ioq_num = i + oct->sriov_info.pf_srn;
851 ioq_vector->ioq_num = i;
857 octeon_free_ioq_vector(struct octeon_device *oct)
859 vfree(oct->ioq_vector);
862 /* this function is only for setting up the first queue */
863 int octeon_setup_instr_queues(struct octeon_device *oct)
867 union oct_txpciq txpciq;
868 int numa_node = dev_to_node(&oct->pci_dev->dev);
870 if (OCTEON_CN6XXX(oct))
872 CFG_GET_NUM_DEF_TX_DESCS(CHIP_CONF(oct, cn6xxx));
873 else if (OCTEON_CN23XX_PF(oct))
874 num_descs = CFG_GET_NUM_DEF_TX_DESCS(CHIP_CONF(oct, cn23xx_pf));
875 else if (OCTEON_CN23XX_VF(oct))
876 num_descs = CFG_GET_NUM_DEF_TX_DESCS(CHIP_CONF(oct, cn23xx_vf));
880 oct->instr_queue[0] = vzalloc_node(sizeof(*oct->instr_queue[0]),
882 if (!oct->instr_queue[0])
883 oct->instr_queue[0] =
884 vzalloc(sizeof(struct octeon_instr_queue));
885 if (!oct->instr_queue[0])
887 memset(oct->instr_queue[0], 0, sizeof(struct octeon_instr_queue));
888 oct->instr_queue[0]->q_index = 0;
889 oct->instr_queue[0]->app_ctx = (void *)(size_t)0;
890 oct->instr_queue[0]->ifidx = 0;
892 txpciq.s.q_no = iq_no;
893 txpciq.s.pkind = oct->pfvf_hsword.pkind;
894 txpciq.s.use_qpg = 0;
896 if (octeon_init_instr_queue(oct, txpciq, num_descs)) {
897 /* prevent memory leak */
898 vfree(oct->instr_queue[0]);
899 oct->instr_queue[0] = NULL;
907 int octeon_setup_output_queues(struct octeon_device *oct)
912 int numa_node = dev_to_node(&oct->pci_dev->dev);
914 if (OCTEON_CN6XXX(oct)) {
916 CFG_GET_NUM_DEF_RX_DESCS(CHIP_CONF(oct, cn6xxx));
918 CFG_GET_DEF_RX_BUF_SIZE(CHIP_CONF(oct, cn6xxx));
919 } else if (OCTEON_CN23XX_PF(oct)) {
920 num_descs = CFG_GET_NUM_DEF_RX_DESCS(CHIP_CONF(oct, cn23xx_pf));
921 desc_size = CFG_GET_DEF_RX_BUF_SIZE(CHIP_CONF(oct, cn23xx_pf));
922 } else if (OCTEON_CN23XX_VF(oct)) {
923 num_descs = CFG_GET_NUM_DEF_RX_DESCS(CHIP_CONF(oct, cn23xx_vf));
924 desc_size = CFG_GET_DEF_RX_BUF_SIZE(CHIP_CONF(oct, cn23xx_vf));
927 oct->droq[0] = vzalloc_node(sizeof(*oct->droq[0]), numa_node);
929 oct->droq[0] = vzalloc(sizeof(*oct->droq[0]));
933 if (octeon_init_droq(oct, oq_no, num_descs, desc_size, NULL)) {
934 vfree(oct->droq[oq_no]);
935 oct->droq[oq_no] = NULL;
943 int octeon_set_io_queues_off(struct octeon_device *oct)
945 int loop = BUSY_READING_REG_VF_LOOP_COUNT;
947 if (OCTEON_CN6XXX(oct)) {
948 octeon_write_csr(oct, CN6XXX_SLI_PKT_INSTR_ENB, 0);
949 octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_ENB, 0);
950 } else if (oct->chip_id == OCTEON_CN23XX_VF_VID) {
953 /* IOQs will already be in reset.
954 * If RST bit is set, wait for quiet bit to be set.
955 * Once quiet bit is set, clear the RST bit.
957 for (q_no = 0; q_no < oct->sriov_info.rings_per_vf; q_no++) {
958 u64 reg_val = octeon_read_csr64(
959 oct, CN23XX_VF_SLI_IQ_PKT_CONTROL64(q_no));
961 while ((reg_val & CN23XX_PKT_INPUT_CTL_RST) &&
962 !(reg_val & CN23XX_PKT_INPUT_CTL_QUIET) &&
964 reg_val = octeon_read_csr64(
965 oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
969 dev_err(&oct->pci_dev->dev,
970 "clearing the reset reg failed or setting the quiet reg failed for qno: %u\n",
975 reg_val = reg_val & ~CN23XX_PKT_INPUT_CTL_RST;
976 octeon_write_csr64(oct,
977 CN23XX_SLI_IQ_PKT_CONTROL64(q_no),
980 reg_val = octeon_read_csr64(
981 oct, CN23XX_SLI_IQ_PKT_CONTROL64(q_no));
982 if (reg_val & CN23XX_PKT_INPUT_CTL_RST) {
983 dev_err(&oct->pci_dev->dev,
984 "unable to reset qno %u\n", q_no);
992 void octeon_set_droq_pkt_op(struct octeon_device *oct,
998 /* Disable the i/p and o/p queues for this Octeon. */
999 if (OCTEON_CN6XXX(oct)) {
1000 reg_val = octeon_read_csr(oct, CN6XXX_SLI_PKT_OUT_ENB);
1003 reg_val = reg_val | (1 << q_no);
1005 reg_val = reg_val & (~(1 << q_no));
1007 octeon_write_csr(oct, CN6XXX_SLI_PKT_OUT_ENB, reg_val);
1011 int octeon_init_dispatch_list(struct octeon_device *oct)
1015 oct->dispatch.count = 0;
1017 for (i = 0; i < DISPATCH_LIST_SIZE; i++) {
1018 oct->dispatch.dlist[i].opcode = 0;
1019 INIT_LIST_HEAD(&oct->dispatch.dlist[i].list);
1022 for (i = 0; i <= REQTYPE_LAST; i++)
1023 octeon_register_reqtype_free_fn(oct, i, NULL);
1025 spin_lock_init(&oct->dispatch.lock);
1030 void octeon_delete_dispatch_list(struct octeon_device *oct)
1033 struct list_head freelist, *temp, *tmp2;
1035 INIT_LIST_HEAD(&freelist);
1037 spin_lock_bh(&oct->dispatch.lock);
1039 for (i = 0; i < DISPATCH_LIST_SIZE; i++) {
1040 struct list_head *dispatch;
1042 dispatch = &oct->dispatch.dlist[i].list;
1043 while (dispatch->next != dispatch) {
1044 temp = dispatch->next;
1046 list_add_tail(temp, &freelist);
1049 oct->dispatch.dlist[i].opcode = 0;
1052 oct->dispatch.count = 0;
1054 spin_unlock_bh(&oct->dispatch.lock);
1056 list_for_each_safe(temp, tmp2, &freelist) {
1062 octeon_dispatch_fn_t
1063 octeon_get_dispatch(struct octeon_device *octeon_dev, u16 opcode,
1067 struct list_head *dispatch;
1068 octeon_dispatch_fn_t fn = NULL;
1069 u16 combined_opcode = OPCODE_SUBCODE(opcode, subcode);
1071 idx = combined_opcode & OCTEON_OPCODE_MASK;
1073 spin_lock_bh(&octeon_dev->dispatch.lock);
1075 if (octeon_dev->dispatch.count == 0) {
1076 spin_unlock_bh(&octeon_dev->dispatch.lock);
1080 if (!(octeon_dev->dispatch.dlist[idx].opcode)) {
1081 spin_unlock_bh(&octeon_dev->dispatch.lock);
1085 if (octeon_dev->dispatch.dlist[idx].opcode == combined_opcode) {
1086 fn = octeon_dev->dispatch.dlist[idx].dispatch_fn;
1088 list_for_each(dispatch,
1089 &octeon_dev->dispatch.dlist[idx].list) {
1090 if (((struct octeon_dispatch *)dispatch)->opcode ==
1092 fn = ((struct octeon_dispatch *)
1093 dispatch)->dispatch_fn;
1099 spin_unlock_bh(&octeon_dev->dispatch.lock);
1103 /* octeon_register_dispatch_fn
1105 * octeon_id - id of the octeon device.
1106 * opcode - opcode for which driver should call the registered function
1107 * subcode - subcode for which driver should call the registered function
1108 * fn - The function to call when a packet with "opcode" arrives in
1109 * octeon output queues.
1110 * fn_arg - The argument to be passed when calling function "fn".
1112 * Registers a function and its argument to be called when a packet
1113 * arrives in Octeon output queues with "opcode".
1118 * No locks are held.
1121 octeon_register_dispatch_fn(struct octeon_device *oct,
1124 octeon_dispatch_fn_t fn, void *fn_arg)
1127 octeon_dispatch_fn_t pfn;
1128 u16 combined_opcode = OPCODE_SUBCODE(opcode, subcode);
1130 idx = combined_opcode & OCTEON_OPCODE_MASK;
1132 spin_lock_bh(&oct->dispatch.lock);
1133 /* Add dispatch function to first level of lookup table */
1134 if (oct->dispatch.dlist[idx].opcode == 0) {
1135 oct->dispatch.dlist[idx].opcode = combined_opcode;
1136 oct->dispatch.dlist[idx].dispatch_fn = fn;
1137 oct->dispatch.dlist[idx].arg = fn_arg;
1138 oct->dispatch.count++;
1139 spin_unlock_bh(&oct->dispatch.lock);
1143 spin_unlock_bh(&oct->dispatch.lock);
1145 /* Check if there was a function already registered for this
1148 pfn = octeon_get_dispatch(oct, opcode, subcode);
1150 struct octeon_dispatch *dispatch;
1152 dev_dbg(&oct->pci_dev->dev,
1153 "Adding opcode to dispatch list linked list\n");
1154 dispatch = (struct octeon_dispatch *)
1155 vmalloc(sizeof(struct octeon_dispatch));
1157 dev_err(&oct->pci_dev->dev,
1158 "No memory to add dispatch function\n");
1161 dispatch->opcode = combined_opcode;
1162 dispatch->dispatch_fn = fn;
1163 dispatch->arg = fn_arg;
1165 /* Add dispatch function to linked list of fn ptrs
1166 * at the hashed index.
1168 spin_lock_bh(&oct->dispatch.lock);
1169 list_add(&dispatch->list, &oct->dispatch.dlist[idx].list);
1170 oct->dispatch.count++;
1171 spin_unlock_bh(&oct->dispatch.lock);
1174 dev_err(&oct->pci_dev->dev,
1175 "Found previously registered dispatch fn for opcode/subcode: %x/%x\n",
1183 int octeon_core_drv_init(struct octeon_recv_info *recv_info, void *buf)
1187 struct octeon_device *oct = (struct octeon_device *)buf;
1188 struct octeon_recv_pkt *recv_pkt = recv_info->recv_pkt;
1189 struct octeon_core_setup *cs = NULL;
1190 u32 num_nic_ports = 0;
1192 if (OCTEON_CN6XXX(oct))
1194 CFG_GET_NUM_NIC_PORTS(CHIP_CONF(oct, cn6xxx));
1195 else if (OCTEON_CN23XX_PF(oct))
1197 CFG_GET_NUM_NIC_PORTS(CHIP_CONF(oct, cn23xx_pf));
1199 if (atomic_read(&oct->status) >= OCT_DEV_RUNNING) {
1200 dev_err(&oct->pci_dev->dev, "Received CORE OK when device state is 0x%x\n",
1201 atomic_read(&oct->status));
1202 goto core_drv_init_err;
1207 (u32)recv_pkt->rh.r_core_drv_init.app_mode),
1208 sizeof(app_name) - 1);
1209 oct->app_mode = (u32)recv_pkt->rh.r_core_drv_init.app_mode;
1210 if (recv_pkt->rh.r_core_drv_init.app_mode == CVM_DRV_NIC_APP) {
1211 oct->fw_info.max_nic_ports =
1212 (u32)recv_pkt->rh.r_core_drv_init.max_nic_ports;
1213 oct->fw_info.num_gmx_ports =
1214 (u32)recv_pkt->rh.r_core_drv_init.num_gmx_ports;
1217 if (oct->fw_info.max_nic_ports < num_nic_ports) {
1218 dev_err(&oct->pci_dev->dev,
1219 "Config has more ports than firmware allows (%d > %d).\n",
1220 num_nic_ports, oct->fw_info.max_nic_ports);
1221 goto core_drv_init_err;
1223 oct->fw_info.app_cap_flags = recv_pkt->rh.r_core_drv_init.app_cap_flags;
1224 oct->fw_info.app_mode = (u32)recv_pkt->rh.r_core_drv_init.app_mode;
1225 oct->pfvf_hsword.app_mode = (u32)recv_pkt->rh.r_core_drv_init.app_mode;
1227 oct->pfvf_hsword.pkind = recv_pkt->rh.r_core_drv_init.pkind;
1229 for (i = 0; i < oct->num_iqs; i++)
1230 oct->instr_queue[i]->txpciq.s.pkind = oct->pfvf_hsword.pkind;
1232 atomic_set(&oct->status, OCT_DEV_CORE_OK);
1234 cs = &core_setup[oct->octeon_id];
1236 if (recv_pkt->buffer_size[0] != (sizeof(*cs) + OCT_DROQ_INFO_SIZE)) {
1237 dev_dbg(&oct->pci_dev->dev, "Core setup bytes expected %u found %d\n",
1239 recv_pkt->buffer_size[0]);
1243 recv_pkt->buffer_ptr[0]) + OCT_DROQ_INFO_SIZE, sizeof(*cs));
1245 strncpy(oct->boardinfo.name, cs->boardname, OCT_BOARD_NAME);
1246 strncpy(oct->boardinfo.serial_number, cs->board_serial_number,
1249 octeon_swap_8B_data((u64 *)cs, (sizeof(*cs) >> 3));
1251 oct->boardinfo.major = cs->board_rev_major;
1252 oct->boardinfo.minor = cs->board_rev_minor;
1254 dev_info(&oct->pci_dev->dev,
1255 "Running %s (%llu Hz)\n",
1256 app_name, CVM_CAST64(cs->corefreq));
1259 for (i = 0; i < recv_pkt->buffer_count; i++)
1260 recv_buffer_free(recv_pkt->buffer_ptr[i]);
1261 octeon_free_recv_info(recv_info);
1265 int octeon_get_tx_qsize(struct octeon_device *oct, u32 q_no)
1268 if (oct && (q_no < MAX_OCTEON_INSTR_QUEUES(oct)) &&
1269 (oct->io_qmask.iq & BIT_ULL(q_no)))
1270 return oct->instr_queue[q_no]->max_count;
1275 int octeon_get_rx_qsize(struct octeon_device *oct, u32 q_no)
1277 if (oct && (q_no < MAX_OCTEON_OUTPUT_QUEUES(oct)) &&
1278 (oct->io_qmask.oq & BIT_ULL(q_no)))
1279 return oct->droq[q_no]->max_count;
1283 /* Retruns the host firmware handshake OCTEON specific configuration */
1284 struct octeon_config *octeon_get_conf(struct octeon_device *oct)
1286 struct octeon_config *default_oct_conf = NULL;
1288 /* check the OCTEON Device model & return the corresponding octeon
1292 if (OCTEON_CN6XXX(oct)) {
1294 (struct octeon_config *)(CHIP_CONF(oct, cn6xxx));
1295 } else if (OCTEON_CN23XX_PF(oct)) {
1296 default_oct_conf = (struct octeon_config *)
1297 (CHIP_CONF(oct, cn23xx_pf));
1298 } else if (OCTEON_CN23XX_VF(oct)) {
1299 default_oct_conf = (struct octeon_config *)
1300 (CHIP_CONF(oct, cn23xx_vf));
1302 return default_oct_conf;
1305 /* scratch register address is same in all the OCT-II and CN70XX models */
1306 #define CNXX_SLI_SCRATCH1 0x3C0
1308 /** Get the octeon device pointer.
1309 * @param octeon_id - The id for which the octeon device pointer is required.
1310 * @return Success: Octeon device pointer.
1311 * @return Failure: NULL.
1313 struct octeon_device *lio_get_device(u32 octeon_id)
1315 if (octeon_id >= MAX_OCTEON_DEVICES)
1318 return octeon_device[octeon_id];
1321 u64 lio_pci_readq(struct octeon_device *oct, u64 addr)
1324 unsigned long flags;
1327 spin_lock_irqsave(&oct->pci_win_lock, flags);
1329 /* The windowed read happens when the LSB of the addr is written.
1330 * So write MSB first
1332 addrhi = (addr >> 32);
1333 if ((oct->chip_id == OCTEON_CN66XX) ||
1334 (oct->chip_id == OCTEON_CN68XX) ||
1335 (oct->chip_id == OCTEON_CN23XX_PF_VID))
1336 addrhi |= 0x00060000;
1337 writel(addrhi, oct->reg_list.pci_win_rd_addr_hi);
1339 /* Read back to preserve ordering of writes */
1340 val32 = readl(oct->reg_list.pci_win_rd_addr_hi);
1342 writel(addr & 0xffffffff, oct->reg_list.pci_win_rd_addr_lo);
1343 val32 = readl(oct->reg_list.pci_win_rd_addr_lo);
1345 val64 = readq(oct->reg_list.pci_win_rd_data);
1347 spin_unlock_irqrestore(&oct->pci_win_lock, flags);
1352 void lio_pci_writeq(struct octeon_device *oct,
1357 unsigned long flags;
1359 spin_lock_irqsave(&oct->pci_win_lock, flags);
1361 writeq(addr, oct->reg_list.pci_win_wr_addr);
1363 /* The write happens when the LSB is written. So write MSB first. */
1364 writel(val >> 32, oct->reg_list.pci_win_wr_data_hi);
1365 /* Read the MSB to ensure ordering of writes. */
1366 val32 = readl(oct->reg_list.pci_win_wr_data_hi);
1368 writel(val & 0xffffffff, oct->reg_list.pci_win_wr_data_lo);
1370 spin_unlock_irqrestore(&oct->pci_win_lock, flags);
1373 int octeon_mem_access_ok(struct octeon_device *oct)
1375 u64 access_okay = 0;
1378 /* Check to make sure a DDR interface is enabled */
1379 if (OCTEON_CN23XX_PF(oct)) {
1380 lmc0_reset_ctl = lio_pci_readq(oct, CN23XX_LMC0_RESET_CTL);
1382 (lmc0_reset_ctl & CN23XX_LMC0_RESET_CTL_DDR3RST_MASK);
1384 lmc0_reset_ctl = lio_pci_readq(oct, CN6XXX_LMC0_RESET_CTL);
1386 (lmc0_reset_ctl & CN6XXX_LMC0_RESET_CTL_DDR3RST_MASK);
1389 return access_okay ? 0 : 1;
1392 int octeon_wait_for_ddr_init(struct octeon_device *oct, u32 *timeout)
1400 for (ms = 0; (ret != 0) && ((*timeout == 0) || (ms <= *timeout));
1402 ret = octeon_mem_access_ok(oct);
1406 schedule_timeout_uninterruptible(HZ / 10);
1412 /** Get the octeon id assigned to the octeon device passed as argument.
1413 * This function is exported to other modules.
1414 * @param dev - octeon device pointer passed as a void *.
1415 * @return octeon device id
1417 int lio_get_device_id(void *dev)
1419 struct octeon_device *octeon_dev = (struct octeon_device *)dev;
1422 for (i = 0; i < MAX_OCTEON_DEVICES; i++)
1423 if (octeon_device[i] == octeon_dev)
1424 return octeon_dev->octeon_id;
1428 void lio_enable_irq(struct octeon_droq *droq, struct octeon_instr_queue *iq)
1432 struct octeon_device *oct = NULL;
1434 /* the whole thing needs to be atomic, ideally */
1436 pkts_pend = (u32)atomic_read(&droq->pkts_pending);
1437 spin_lock_bh(&droq->lock);
1438 writel(droq->pkt_count - pkts_pend, droq->pkts_sent_reg);
1439 droq->pkt_count = pkts_pend;
1440 /* this write needs to be flushed before we release the lock */
1442 spin_unlock_bh(&droq->lock);
1443 oct = droq->oct_dev;
1446 spin_lock_bh(&iq->lock);
1447 writel(iq->pkts_processed, iq->inst_cnt_reg);
1448 iq->pkt_in_done -= iq->pkts_processed;
1449 iq->pkts_processed = 0;
1450 /* this write needs to be flushed before we release the lock */
1452 spin_unlock_bh(&iq->lock);
1455 /*write resend. Writing RESEND in SLI_PKTX_CNTS should be enough
1456 *to trigger tx interrupts as well, if they are pending.
1458 if (oct && (OCTEON_CN23XX_PF(oct) || OCTEON_CN23XX_VF(oct))) {
1460 writeq(CN23XX_INTR_RESEND, droq->pkts_sent_reg);
1461 /*we race with firmrware here. read and write the IN_DONE_CNTS*/
1463 instr_cnt = readq(iq->inst_cnt_reg);
1464 writeq(((instr_cnt & 0xFFFFFFFF00000000ULL) |
1465 CN23XX_INTR_RESEND),