2 * linux/drivers/net/ehea/ehea_main.c
4 * eHEA ethernet device driver for IBM eServer System p
6 * (C) Copyright IBM Corp. 2006
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 #include <linux/tcp.h>
32 #include <linux/udp.h>
34 #include <linux/list.h>
35 #include <linux/if_ether.h>
40 #include "ehea_phyp.h"
43 MODULE_LICENSE("GPL");
44 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
45 MODULE_DESCRIPTION("IBM eServer HEA Driver");
46 MODULE_VERSION(DRV_VERSION);
49 static int msg_level = -1;
50 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
51 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
52 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
53 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
54 static int use_mcs = 0;
55 static int num_tx_qps = EHEA_NUM_TX_QP;
57 module_param(msg_level, int, 0);
58 module_param(rq1_entries, int, 0);
59 module_param(rq2_entries, int, 0);
60 module_param(rq3_entries, int, 0);
61 module_param(sq_entries, int, 0);
62 module_param(use_mcs, int, 0);
63 module_param(num_tx_qps, int, 0);
65 MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
66 MODULE_PARM_DESC(msg_level, "msg_level");
67 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
68 "[2^x - 1], x = [6..14]. Default = "
69 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
70 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
71 "[2^x - 1], x = [6..14]. Default = "
72 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
73 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
74 "[2^x - 1], x = [6..14]. Default = "
75 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
76 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
77 "[2^x - 1], x = [6..14]. Default = "
78 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
79 MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 1 ");
81 static int port_name_cnt = 0;
83 static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
84 const struct of_device_id *id);
86 static int __devexit ehea_remove(struct ibmebus_dev *dev);
88 static struct of_device_id ehea_device_table[] = {
91 .compatible = "IBM,lhea",
96 static struct ibmebus_driver ehea_driver = {
98 .id_table = ehea_device_table,
99 .probe = ehea_probe_adapter,
100 .remove = ehea_remove,
103 void ehea_dump(void *adr, int len, char *msg) {
105 unsigned char *deb = adr;
106 for (x = 0; x < len; x += 16) {
107 printk(DRV_NAME " %s adr=%p ofs=%04x %016lx %016lx\n", msg,
108 deb, x, *((u64*)&deb[0]), *((u64*)&deb[8]));
113 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
115 struct ehea_port *port = netdev_priv(dev);
116 struct net_device_stats *stats = &port->stats;
117 struct hcp_ehea_port_cb2 *cb2;
118 u64 hret, rx_packets;
121 memset(stats, 0, sizeof(*stats));
123 cb2 = kzalloc(PAGE_SIZE, GFP_KERNEL);
125 ehea_error("no mem for cb2");
129 hret = ehea_h_query_ehea_port(port->adapter->handle,
130 port->logical_port_id,
131 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
132 if (hret != H_SUCCESS) {
133 ehea_error("query_ehea_port failed");
137 if (netif_msg_hw(port))
138 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
141 for (i = 0; i < port->num_def_qps; i++)
142 rx_packets += port->port_res[i].rx_packets;
144 stats->tx_packets = cb2->txucp + cb2->txmcp + cb2->txbcp;
145 stats->multicast = cb2->rxmcp;
146 stats->rx_errors = cb2->rxuerr;
147 stats->rx_bytes = cb2->rxo;
148 stats->tx_bytes = cb2->txo;
149 stats->rx_packets = rx_packets;
157 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
159 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
160 struct net_device *dev = pr->port->netdev;
161 int max_index_mask = pr->rq1_skba.len - 1;
167 for (i = 0; i < nr_of_wqes; i++) {
168 if (!skb_arr_rq1[index]) {
169 skb_arr_rq1[index] = netdev_alloc_skb(dev,
171 if (!skb_arr_rq1[index]) {
172 ehea_error("%s: no mem for skb/%d wqes filled",
178 index &= max_index_mask;
181 ehea_update_rq1a(pr->qp, i);
184 static int ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
187 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
188 struct net_device *dev = pr->port->netdev;
191 for (i = 0; i < pr->rq1_skba.len; i++) {
192 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
193 if (!skb_arr_rq1[i]) {
194 ehea_error("%s: no mem for skb/%d wqes filled",
201 ehea_update_rq1a(pr->qp, nr_rq1a);
206 static int ehea_refill_rq_def(struct ehea_port_res *pr,
207 struct ehea_q_skb_arr *q_skba, int rq_nr,
208 int num_wqes, int wqe_type, int packet_size)
210 struct net_device *dev = pr->port->netdev;
211 struct ehea_qp *qp = pr->qp;
212 struct sk_buff **skb_arr = q_skba->arr;
213 struct ehea_rwqe *rwqe;
214 int i, index, max_index_mask, fill_wqes;
217 fill_wqes = q_skba->os_skbs + num_wqes;
222 index = q_skba->index;
223 max_index_mask = q_skba->len - 1;
224 for (i = 0; i < fill_wqes; i++) {
225 struct sk_buff *skb = netdev_alloc_skb(dev, packet_size);
227 ehea_error("%s: no mem for skb/%d wqes filled",
228 pr->port->netdev->name, i);
229 q_skba->os_skbs = fill_wqes - i;
233 skb_reserve(skb, NET_IP_ALIGN);
235 skb_arr[index] = skb;
237 rwqe = ehea_get_next_rwqe(qp, rq_nr);
238 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
239 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
240 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
241 rwqe->sg_list[0].vaddr = (u64)skb->data;
242 rwqe->sg_list[0].len = packet_size;
243 rwqe->data_segments = 1;
246 index &= max_index_mask;
248 q_skba->index = index;
253 ehea_update_rq2a(pr->qp, i);
255 ehea_update_rq3a(pr->qp, i);
261 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
263 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
264 nr_of_wqes, EHEA_RWQE2_TYPE,
265 EHEA_RQ2_PKT_SIZE + NET_IP_ALIGN);
269 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
271 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
272 nr_of_wqes, EHEA_RWQE3_TYPE,
273 EHEA_MAX_PACKET_SIZE + NET_IP_ALIGN);
276 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
278 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
279 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
281 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
282 (cqe->header_length == 0))
287 static inline void ehea_fill_skb(struct net_device *dev,
288 struct sk_buff *skb, struct ehea_cqe *cqe)
290 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
292 skb_put(skb, length);
293 skb->ip_summed = CHECKSUM_UNNECESSARY;
294 skb->protocol = eth_type_trans(skb, dev);
297 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
299 struct ehea_cqe *cqe)
301 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
311 prefetchw(pref + EHEA_CACHE_LINE);
313 pref = (skb_array[x]->data);
315 prefetch(pref + EHEA_CACHE_LINE);
316 prefetch(pref + EHEA_CACHE_LINE * 2);
317 prefetch(pref + EHEA_CACHE_LINE * 3);
318 skb = skb_array[skb_index];
319 skb_array[skb_index] = NULL;
323 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
324 int arr_len, int wqe_index)
335 prefetchw(pref + EHEA_CACHE_LINE);
337 pref = (skb_array[x]->data);
339 prefetchw(pref + EHEA_CACHE_LINE);
341 skb = skb_array[wqe_index];
342 skb_array[wqe_index] = NULL;
346 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
347 struct ehea_cqe *cqe, int *processed_rq2,
352 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
353 pr->p_stats.err_tcp_cksum++;
354 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
355 pr->p_stats.err_ip_cksum++;
356 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
357 pr->p_stats.err_frame_crc++;
359 if (netif_msg_rx_err(pr->port)) {
360 ehea_error("CQE Error for QP %d", pr->qp->init_attr.qp_nr);
361 ehea_dump(cqe, sizeof(*cqe), "CQE");
366 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
368 } else if (rq == 3) {
370 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
374 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
375 ehea_error("Critical receive error. Resetting port.");
376 queue_work(pr->port->adapter->ehea_wq, &pr->port->reset_task);
383 static struct ehea_cqe *ehea_proc_rwqes(struct net_device *dev,
384 struct ehea_port_res *pr,
387 struct ehea_port *port = pr->port;
388 struct ehea_qp *qp = pr->qp;
389 struct ehea_cqe *cqe;
391 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
392 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
393 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
394 int skb_arr_rq1_len = pr->rq1_skba.len;
395 int skb_arr_rq2_len = pr->rq2_skba.len;
396 int skb_arr_rq3_len = pr->rq3_skba.len;
397 int processed, processed_rq1, processed_rq2, processed_rq3;
398 int wqe_index, last_wqe_index, rq, my_quota, port_reset;
400 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
402 my_quota = min(*budget, dev->quota);
404 cqe = ehea_poll_rq1(qp, &wqe_index);
405 while ((my_quota > 0) && cqe) {
410 if (netif_msg_rx_status(port))
411 ehea_dump(cqe, sizeof(*cqe), "CQE");
413 last_wqe_index = wqe_index;
415 if (!ehea_check_cqe(cqe, &rq)) {
416 if (rq == 1) { /* LL RQ1 */
417 skb = get_skb_by_index_ll(skb_arr_rq1,
420 if (unlikely(!skb)) {
421 if (netif_msg_rx_err(port))
422 ehea_error("LL rq1: skb=NULL");
424 skb = netdev_alloc_skb(port->netdev,
429 skb_copy_to_linear_data(skb, ((char*)cqe) + 64,
430 cqe->num_bytes_transfered - 4);
431 ehea_fill_skb(port->netdev, skb, cqe);
432 } else if (rq == 2) { /* RQ2 */
433 skb = get_skb_by_index(skb_arr_rq2,
434 skb_arr_rq2_len, cqe);
435 if (unlikely(!skb)) {
436 if (netif_msg_rx_err(port))
437 ehea_error("rq2: skb=NULL");
440 ehea_fill_skb(port->netdev, skb, cqe);
443 skb = get_skb_by_index(skb_arr_rq3,
444 skb_arr_rq3_len, cqe);
445 if (unlikely(!skb)) {
446 if (netif_msg_rx_err(port))
447 ehea_error("rq3: skb=NULL");
450 ehea_fill_skb(port->netdev, skb, cqe);
454 if ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
456 vlan_hwaccel_receive_skb(skb, port->vgrp,
459 netif_receive_skb(skb);
461 pr->p_stats.poll_receive_errors++;
462 port_reset = ehea_treat_poll_error(pr, rq, cqe,
468 cqe = ehea_poll_rq1(qp, &wqe_index);
471 pr->rx_packets += processed;
472 *budget -= processed;
474 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
475 ehea_refill_rq2(pr, processed_rq2);
476 ehea_refill_rq3(pr, processed_rq3);
478 cqe = ehea_poll_rq1(qp, &wqe_index);
482 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
485 struct ehea_cq *send_cq = pr->send_cq;
486 struct ehea_cqe *cqe;
487 int quota = my_quota;
493 cqe = ehea_poll_cq(send_cq);
494 while(cqe && (quota > 0)) {
495 ehea_inc_cq(send_cq);
499 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
500 ehea_error("Send Completion Error: Resetting port");
501 if (netif_msg_tx_err(pr->port))
502 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
503 queue_work(pr->port->adapter->ehea_wq,
504 &pr->port->reset_task);
508 if (netif_msg_tx_done(pr->port))
509 ehea_dump(cqe, sizeof(*cqe), "CQE");
511 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
512 == EHEA_SWQE2_TYPE)) {
514 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
515 skb = pr->sq_skba.arr[index];
517 pr->sq_skba.arr[index] = NULL;
520 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
523 cqe = ehea_poll_cq(send_cq);
526 ehea_update_feca(send_cq, cqe_counter);
527 atomic_add(swqe_av, &pr->swqe_avail);
529 spin_lock_irqsave(&pr->netif_queue, flags);
531 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
532 >= pr->swqe_refill_th)) {
533 netif_wake_queue(pr->port->netdev);
534 pr->queue_stopped = 0;
536 spin_unlock_irqrestore(&pr->netif_queue, flags);
541 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
543 static int ehea_poll(struct net_device *dev, int *budget)
545 struct ehea_port_res *pr = dev->priv;
546 struct ehea_cqe *cqe;
547 struct ehea_cqe *cqe_skb = NULL;
548 int force_irq, wqe_index;
550 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
551 cqe_skb = ehea_poll_cq(pr->send_cq);
553 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
555 if ((!cqe && !cqe_skb) || force_irq) {
556 pr->poll_counter = 0;
557 netif_rx_complete(dev);
558 ehea_reset_cq_ep(pr->recv_cq);
559 ehea_reset_cq_ep(pr->send_cq);
560 ehea_reset_cq_n1(pr->recv_cq);
561 ehea_reset_cq_n1(pr->send_cq);
562 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
563 cqe_skb = ehea_poll_cq(pr->send_cq);
565 if (!cqe && !cqe_skb)
568 if (!netif_rx_reschedule(dev, dev->quota))
572 cqe = ehea_proc_rwqes(dev, pr, budget);
573 cqe_skb = ehea_proc_cqes(pr, 300);
581 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
583 struct ehea_port_res *pr = param;
585 netif_rx_schedule(pr->d_netdev);
590 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
592 struct ehea_port *port = param;
593 struct ehea_eqe *eqe;
597 eqe = ehea_poll_eq(port->qp_eq);
600 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
601 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
602 eqe->entry, qp_token);
604 qp = port->port_res[qp_token].qp;
605 ehea_error_data(port->adapter, qp->fw_handle);
606 eqe = ehea_poll_eq(port->qp_eq);
609 queue_work(port->adapter->ehea_wq, &port->reset_task);
614 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
619 for (i = 0; i < EHEA_MAX_PORTS; i++)
620 if (adapter->port[i])
621 if (adapter->port[i]->logical_port_id == logical_port)
622 return adapter->port[i];
626 int ehea_sense_port_attr(struct ehea_port *port)
630 struct hcp_ehea_port_cb0 *cb0;
632 cb0 = kzalloc(PAGE_SIZE, GFP_ATOMIC); /* May be called via */
633 if (!cb0) { /* ehea_neq_tasklet() */
634 ehea_error("no mem for cb0");
639 hret = ehea_h_query_ehea_port(port->adapter->handle,
640 port->logical_port_id, H_PORT_CB0,
641 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
643 if (hret != H_SUCCESS) {
649 port->mac_addr = cb0->port_mac_addr << 16;
651 if (!is_valid_ether_addr((u8*)&port->mac_addr)) {
652 ret = -EADDRNOTAVAIL;
657 switch (cb0->port_speed) {
659 port->port_speed = EHEA_SPEED_10M;
660 port->full_duplex = 0;
663 port->port_speed = EHEA_SPEED_10M;
664 port->full_duplex = 1;
667 port->port_speed = EHEA_SPEED_100M;
668 port->full_duplex = 0;
671 port->port_speed = EHEA_SPEED_100M;
672 port->full_duplex = 1;
675 port->port_speed = EHEA_SPEED_1G;
676 port->full_duplex = 1;
679 port->port_speed = EHEA_SPEED_10G;
680 port->full_duplex = 1;
683 port->port_speed = 0;
684 port->full_duplex = 0;
689 port->num_mcs = cb0->num_default_qps;
691 /* Number of default QPs */
693 port->num_def_qps = cb0->num_default_qps;
695 port->num_def_qps = 1;
697 if (!port->num_def_qps) {
702 port->num_tx_qps = num_tx_qps;
704 if (port->num_def_qps >= port->num_tx_qps)
705 port->num_add_tx_qps = 0;
707 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
711 if (ret || netif_msg_probe(port))
712 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
718 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
720 struct hcp_ehea_port_cb4 *cb4;
724 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
726 ehea_error("no mem for cb4");
731 cb4->port_speed = port_speed;
733 netif_carrier_off(port->netdev);
735 hret = ehea_h_modify_ehea_port(port->adapter->handle,
736 port->logical_port_id,
737 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
738 if (hret == H_SUCCESS) {
739 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
741 hret = ehea_h_query_ehea_port(port->adapter->handle,
742 port->logical_port_id,
743 H_PORT_CB4, H_PORT_CB4_SPEED,
745 if (hret == H_SUCCESS) {
746 switch (cb4->port_speed) {
748 port->port_speed = EHEA_SPEED_10M;
749 port->full_duplex = 0;
752 port->port_speed = EHEA_SPEED_10M;
753 port->full_duplex = 1;
756 port->port_speed = EHEA_SPEED_100M;
757 port->full_duplex = 0;
760 port->port_speed = EHEA_SPEED_100M;
761 port->full_duplex = 1;
764 port->port_speed = EHEA_SPEED_1G;
765 port->full_duplex = 1;
768 port->port_speed = EHEA_SPEED_10G;
769 port->full_duplex = 1;
772 port->port_speed = 0;
773 port->full_duplex = 0;
777 ehea_error("Failed sensing port speed");
781 if (hret == H_AUTHORITY) {
782 ehea_info("Hypervisor denied setting port speed");
786 ehea_error("Failed setting port speed");
789 netif_carrier_on(port->netdev);
795 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
800 struct ehea_port *port;
802 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
803 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
804 port = ehea_get_port(adapter, portnum);
807 case EHEA_EC_PORTSTATE_CHG: /* port state change */
810 ehea_error("unknown portnum %x", portnum);
814 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
815 if (!netif_carrier_ok(port->netdev)) {
816 ret = ehea_sense_port_attr(port);
818 ehea_error("failed resensing port "
823 if (netif_msg_link(port))
824 ehea_info("%s: Logical port up: %dMbps "
829 1 ? "Full" : "Half");
831 netif_carrier_on(port->netdev);
832 netif_wake_queue(port->netdev);
835 if (netif_carrier_ok(port->netdev)) {
836 if (netif_msg_link(port))
837 ehea_info("%s: Logical port down",
839 netif_carrier_off(port->netdev);
840 netif_stop_queue(port->netdev);
843 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
844 if (netif_msg_link(port))
845 ehea_info("%s: Physical port up",
848 if (netif_msg_link(port))
849 ehea_info("%s: Physical port down",
853 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
854 ehea_info("External switch port is primary port");
856 ehea_info("External switch port is backup port");
859 case EHEA_EC_ADAPTER_MALFUNC:
860 ehea_error("Adapter malfunction");
862 case EHEA_EC_PORT_MALFUNC:
863 ehea_info("Port malfunction: Device: %s", port->netdev->name);
864 netif_carrier_off(port->netdev);
865 netif_stop_queue(port->netdev);
868 ehea_error("unknown event code %x, eqe=0x%lX", ec, eqe);
873 static void ehea_neq_tasklet(unsigned long data)
875 struct ehea_adapter *adapter = (struct ehea_adapter*)data;
876 struct ehea_eqe *eqe;
879 eqe = ehea_poll_eq(adapter->neq);
880 ehea_debug("eqe=%p", eqe);
883 ehea_debug("*eqe=%lx", eqe->entry);
884 ehea_parse_eqe(adapter, eqe->entry);
885 eqe = ehea_poll_eq(adapter->neq);
886 ehea_debug("next eqe=%p", eqe);
889 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
890 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
891 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
893 ehea_h_reset_events(adapter->handle,
894 adapter->neq->fw_handle, event_mask);
897 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
899 struct ehea_adapter *adapter = param;
900 tasklet_hi_schedule(&adapter->neq_tasklet);
905 static int ehea_fill_port_res(struct ehea_port_res *pr)
908 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
910 ret = ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
911 - init_attr->act_nr_rwqes_rq2
912 - init_attr->act_nr_rwqes_rq3 - 1);
914 ret |= ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
916 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
921 static int ehea_reg_interrupts(struct net_device *dev)
923 struct ehea_port *port = netdev_priv(dev);
924 struct ehea_port_res *pr;
928 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
931 ret = ibmebus_request_irq(NULL, port->qp_eq->attr.ist1,
932 ehea_qp_aff_irq_handler,
933 IRQF_DISABLED, port->int_aff_name, port);
935 ehea_error("failed registering irq for qp_aff_irq_handler:"
936 "ist=%X", port->qp_eq->attr.ist1);
940 if (netif_msg_ifup(port))
941 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
942 "registered", port->qp_eq->attr.ist1);
945 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
946 pr = &port->port_res[i];
947 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
948 "%s-queue%d", dev->name, i);
949 ret = ibmebus_request_irq(NULL, pr->eq->attr.ist1,
950 ehea_recv_irq_handler,
951 IRQF_DISABLED, pr->int_send_name,
954 ehea_error("failed registering irq for ehea_queue "
955 "port_res_nr:%d, ist=%X", i,
959 if (netif_msg_ifup(port))
960 ehea_info("irq_handle 0x%X for function ehea_queue_int "
961 "%d registered", pr->eq->attr.ist1, i);
969 u32 ist = port->port_res[i].eq->attr.ist1;
970 ibmebus_free_irq(NULL, ist, &port->port_res[i]);
974 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
975 i = port->num_def_qps;
981 static void ehea_free_interrupts(struct net_device *dev)
983 struct ehea_port *port = netdev_priv(dev);
984 struct ehea_port_res *pr;
989 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
990 pr = &port->port_res[i];
991 ibmebus_free_irq(NULL, pr->eq->attr.ist1, pr);
992 if (netif_msg_intr(port))
993 ehea_info("free send irq for res %d with handle 0x%X",
994 i, pr->eq->attr.ist1);
997 /* associated events */
998 ibmebus_free_irq(NULL, port->qp_eq->attr.ist1, port);
999 if (netif_msg_intr(port))
1000 ehea_info("associated event interrupt for handle 0x%X freed",
1001 port->qp_eq->attr.ist1);
1004 static int ehea_configure_port(struct ehea_port *port)
1008 struct hcp_ehea_port_cb0 *cb0;
1011 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1015 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1016 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1017 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1018 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1019 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1020 PXLY_RC_VLAN_FILTER)
1021 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1023 for (i = 0; i < port->num_mcs; i++)
1025 cb0->default_qpn_arr[i] =
1026 port->port_res[i].qp->init_attr.qp_nr;
1028 cb0->default_qpn_arr[i] =
1029 port->port_res[0].qp->init_attr.qp_nr;
1031 if (netif_msg_ifup(port))
1032 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1034 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1035 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1037 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1038 port->logical_port_id,
1039 H_PORT_CB0, mask, cb0);
1041 if (hret != H_SUCCESS)
1052 int ehea_gen_smrs(struct ehea_port_res *pr)
1055 struct ehea_adapter *adapter = pr->port->adapter;
1057 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1061 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1068 ehea_rem_mr(&pr->send_mr);
1070 ehea_error("Generating SMRS failed\n");
1074 int ehea_rem_smrs(struct ehea_port_res *pr)
1076 if ((ehea_rem_mr(&pr->send_mr))
1077 || (ehea_rem_mr(&pr->recv_mr)))
1083 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1085 int arr_size = sizeof(void*) * max_q_entries;
1087 q_skba->arr = vmalloc(arr_size);
1091 memset(q_skba->arr, 0, arr_size);
1093 q_skba->len = max_q_entries;
1095 q_skba->os_skbs = 0;
1100 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1101 struct port_res_cfg *pr_cfg, int queue_token)
1103 struct ehea_adapter *adapter = port->adapter;
1104 enum ehea_eq_type eq_type = EHEA_EQ;
1105 struct ehea_qp_init_attr *init_attr = NULL;
1108 memset(pr, 0, sizeof(struct ehea_port_res));
1111 spin_lock_init(&pr->xmit_lock);
1112 spin_lock_init(&pr->netif_queue);
1114 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1116 ehea_error("create_eq failed (eq)");
1120 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1122 port->logical_port_id);
1124 ehea_error("create_cq failed (cq_recv)");
1128 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1130 port->logical_port_id);
1132 ehea_error("create_cq failed (cq_send)");
1136 if (netif_msg_ifup(port))
1137 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1138 pr->send_cq->attr.act_nr_of_cqes,
1139 pr->recv_cq->attr.act_nr_of_cqes);
1141 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1144 ehea_error("no mem for ehea_qp_init_attr");
1148 init_attr->low_lat_rq1 = 1;
1149 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1150 init_attr->rq_count = 3;
1151 init_attr->qp_token = queue_token;
1152 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1153 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1154 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1155 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1156 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1157 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1158 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1159 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1160 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1161 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1162 init_attr->port_nr = port->logical_port_id;
1163 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1164 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1165 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1167 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1169 ehea_error("create_qp failed");
1174 if (netif_msg_ifup(port))
1175 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1176 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1177 init_attr->act_nr_send_wqes,
1178 init_attr->act_nr_rwqes_rq1,
1179 init_attr->act_nr_rwqes_rq2,
1180 init_attr->act_nr_rwqes_rq3);
1182 ret = ehea_init_q_skba(&pr->sq_skba, init_attr->act_nr_send_wqes + 1);
1183 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1184 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1185 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1189 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1190 if (ehea_gen_smrs(pr) != 0) {
1195 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1199 pr->d_netdev = alloc_netdev(0, "", ether_setup);
1202 pr->d_netdev->priv = pr;
1203 pr->d_netdev->weight = 64;
1204 pr->d_netdev->poll = ehea_poll;
1205 set_bit(__LINK_STATE_START, &pr->d_netdev->state);
1206 strcpy(pr->d_netdev->name, port->netdev->name);
1213 vfree(pr->sq_skba.arr);
1214 vfree(pr->rq1_skba.arr);
1215 vfree(pr->rq2_skba.arr);
1216 vfree(pr->rq3_skba.arr);
1217 ehea_destroy_qp(pr->qp);
1218 ehea_destroy_cq(pr->send_cq);
1219 ehea_destroy_cq(pr->recv_cq);
1220 ehea_destroy_eq(pr->eq);
1225 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1229 free_netdev(pr->d_netdev);
1231 ret = ehea_destroy_qp(pr->qp);
1234 ehea_destroy_cq(pr->send_cq);
1235 ehea_destroy_cq(pr->recv_cq);
1236 ehea_destroy_eq(pr->eq);
1238 for (i = 0; i < pr->rq1_skba.len; i++)
1239 if (pr->rq1_skba.arr[i])
1240 dev_kfree_skb(pr->rq1_skba.arr[i]);
1242 for (i = 0; i < pr->rq2_skba.len; i++)
1243 if (pr->rq2_skba.arr[i])
1244 dev_kfree_skb(pr->rq2_skba.arr[i]);
1246 for (i = 0; i < pr->rq3_skba.len; i++)
1247 if (pr->rq3_skba.arr[i])
1248 dev_kfree_skb(pr->rq3_skba.arr[i]);
1250 for (i = 0; i < pr->sq_skba.len; i++)
1251 if (pr->sq_skba.arr[i])
1252 dev_kfree_skb(pr->sq_skba.arr[i]);
1254 vfree(pr->rq1_skba.arr);
1255 vfree(pr->rq2_skba.arr);
1256 vfree(pr->rq3_skba.arr);
1257 vfree(pr->sq_skba.arr);
1258 ret = ehea_rem_smrs(pr);
1264 * The write_* functions store information in swqe which is used by
1265 * the hardware to calculate the ip/tcp/udp checksum
1268 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1269 const struct sk_buff *skb)
1271 swqe->ip_start = skb_network_offset(skb);
1272 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1275 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1276 const struct sk_buff *skb)
1279 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1281 swqe->tcp_end = (u16)skb->len - 1;
1284 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1285 const struct sk_buff *skb)
1288 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1290 swqe->tcp_end = (u16)skb->len - 1;
1294 static void write_swqe2_TSO(struct sk_buff *skb,
1295 struct ehea_swqe *swqe, u32 lkey)
1297 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1298 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1299 int skb_data_size = skb->len - skb->data_len;
1303 /* Packet is TCP with TSO enabled */
1304 swqe->tx_control |= EHEA_SWQE_TSO;
1305 swqe->mss = skb_shinfo(skb)->gso_size;
1306 /* copy only eth/ip/tcp headers to immediate data and
1307 * the rest of skb->data to sg1entry
1309 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1311 skb_data_size = skb->len - skb->data_len;
1313 if (skb_data_size >= headersize) {
1314 /* copy immediate data */
1315 skb_copy_from_linear_data(skb, imm_data, headersize);
1316 swqe->immediate_data_length = headersize;
1318 if (skb_data_size > headersize) {
1319 /* set sg1entry data */
1320 sg1entry->l_key = lkey;
1321 sg1entry->len = skb_data_size - headersize;
1323 tmp_addr = (u64)(skb->data + headersize);
1324 sg1entry->vaddr = tmp_addr;
1325 swqe->descriptors++;
1328 ehea_error("cannot handle fragmented headers");
1331 static void write_swqe2_nonTSO(struct sk_buff *skb,
1332 struct ehea_swqe *swqe, u32 lkey)
1334 int skb_data_size = skb->len - skb->data_len;
1335 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1336 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1339 /* Packet is any nonTSO type
1341 * Copy as much as possible skb->data to immediate data and
1342 * the rest to sg1entry
1344 if (skb_data_size >= SWQE2_MAX_IMM) {
1345 /* copy immediate data */
1346 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1348 swqe->immediate_data_length = SWQE2_MAX_IMM;
1350 if (skb_data_size > SWQE2_MAX_IMM) {
1351 /* copy sg1entry data */
1352 sg1entry->l_key = lkey;
1353 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1354 tmp_addr = (u64)(skb->data + SWQE2_MAX_IMM);
1355 sg1entry->vaddr = tmp_addr;
1356 swqe->descriptors++;
1359 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1360 swqe->immediate_data_length = skb_data_size;
1364 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1365 struct ehea_swqe *swqe, u32 lkey)
1367 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1369 int nfrags, sg1entry_contains_frag_data, i;
1372 nfrags = skb_shinfo(skb)->nr_frags;
1373 sg1entry = &swqe->u.immdata_desc.sg_entry;
1374 sg_list = (struct ehea_vsgentry*)&swqe->u.immdata_desc.sg_list;
1375 swqe->descriptors = 0;
1376 sg1entry_contains_frag_data = 0;
1378 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1379 write_swqe2_TSO(skb, swqe, lkey);
1381 write_swqe2_nonTSO(skb, swqe, lkey);
1383 /* write descriptors */
1385 if (swqe->descriptors == 0) {
1386 /* sg1entry not yet used */
1387 frag = &skb_shinfo(skb)->frags[0];
1389 /* copy sg1entry data */
1390 sg1entry->l_key = lkey;
1391 sg1entry->len = frag->size;
1392 tmp_addr = (u64)(page_address(frag->page)
1393 + frag->page_offset);
1394 sg1entry->vaddr = tmp_addr;
1395 swqe->descriptors++;
1396 sg1entry_contains_frag_data = 1;
1399 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1401 frag = &skb_shinfo(skb)->frags[i];
1402 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1404 sgentry->l_key = lkey;
1405 sgentry->len = frag->size;
1407 tmp_addr = (u64)(page_address(frag->page)
1408 + frag->page_offset);
1409 sgentry->vaddr = tmp_addr;
1410 swqe->descriptors++;
1415 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1421 /* De/Register untagged packets */
1422 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1423 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1424 port->logical_port_id,
1425 reg_type, port->mac_addr, 0, hcallid);
1426 if (hret != H_SUCCESS) {
1427 ehea_error("reg_dereg_bcmc failed (tagged)");
1432 /* De/Register VLAN packets */
1433 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1434 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1435 port->logical_port_id,
1436 reg_type, port->mac_addr, 0, hcallid);
1437 if (hret != H_SUCCESS) {
1438 ehea_error("reg_dereg_bcmc failed (vlan)");
1445 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1447 struct ehea_port *port = netdev_priv(dev);
1448 struct sockaddr *mac_addr = sa;
1449 struct hcp_ehea_port_cb0 *cb0;
1453 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1454 ret = -EADDRNOTAVAIL;
1458 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1460 ehea_error("no mem for cb0");
1465 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1467 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1469 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1470 port->logical_port_id, H_PORT_CB0,
1471 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1472 if (hret != H_SUCCESS) {
1477 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1479 /* Deregister old MAC in pHYP */
1480 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1484 port->mac_addr = cb0->port_mac_addr << 16;
1486 /* Register new MAC in pHYP */
1487 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1498 static void ehea_promiscuous_error(u64 hret, int enable)
1500 if (hret == H_AUTHORITY)
1501 ehea_info("Hypervisor denied %sabling promiscuous mode",
1502 enable == 1 ? "en" : "dis");
1504 ehea_error("failed %sabling promiscuous mode",
1505 enable == 1 ? "en" : "dis");
1508 static void ehea_promiscuous(struct net_device *dev, int enable)
1510 struct ehea_port *port = netdev_priv(dev);
1511 struct hcp_ehea_port_cb7 *cb7;
1514 if ((enable && port->promisc) || (!enable && !port->promisc))
1517 cb7 = kzalloc(PAGE_SIZE, GFP_ATOMIC);
1519 ehea_error("no mem for cb7");
1523 /* Modify Pxs_DUCQPN in CB7 */
1524 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1526 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1527 port->logical_port_id,
1528 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1530 ehea_promiscuous_error(hret, enable);
1534 port->promisc = enable;
1540 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1546 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1547 | EHEA_BCMC_UNTAGGED;
1549 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1550 port->logical_port_id,
1551 reg_type, mc_mac_addr, 0, hcallid);
1555 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1556 | EHEA_BCMC_VLANID_ALL;
1558 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1559 port->logical_port_id,
1560 reg_type, mc_mac_addr, 0, hcallid);
1565 static int ehea_drop_multicast_list(struct net_device *dev)
1567 struct ehea_port *port = netdev_priv(dev);
1568 struct ehea_mc_list *mc_entry = port->mc_list;
1569 struct list_head *pos;
1570 struct list_head *temp;
1574 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1575 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1577 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1580 ehea_error("failed deregistering mcast MAC");
1590 static void ehea_allmulti(struct net_device *dev, int enable)
1592 struct ehea_port *port = netdev_priv(dev);
1595 if (!port->allmulti) {
1597 /* Enable ALLMULTI */
1598 ehea_drop_multicast_list(dev);
1599 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1603 ehea_error("failed enabling IFF_ALLMULTI");
1607 /* Disable ALLMULTI */
1608 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1612 ehea_error("failed disabling IFF_ALLMULTI");
1616 static void ehea_add_multicast_entry(struct ehea_port* port, u8* mc_mac_addr)
1618 struct ehea_mc_list *ehea_mcl_entry;
1621 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1622 if (!ehea_mcl_entry) {
1623 ehea_error("no mem for mcl_entry");
1627 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1629 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1631 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1634 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1636 ehea_error("failed registering mcast MAC");
1637 kfree(ehea_mcl_entry);
1641 static void ehea_set_multicast_list(struct net_device *dev)
1643 struct ehea_port *port = netdev_priv(dev);
1644 struct dev_mc_list *k_mcl_entry;
1647 if (dev->flags & IFF_PROMISC) {
1648 ehea_promiscuous(dev, 1);
1651 ehea_promiscuous(dev, 0);
1653 if (dev->flags & IFF_ALLMULTI) {
1654 ehea_allmulti(dev, 1);
1657 ehea_allmulti(dev, 0);
1659 if (dev->mc_count) {
1660 ret = ehea_drop_multicast_list(dev);
1662 /* Dropping the current multicast list failed.
1663 * Enabling ALL_MULTI is the best we can do.
1665 ehea_allmulti(dev, 1);
1668 if (dev->mc_count > port->adapter->max_mc_mac) {
1669 ehea_info("Mcast registration limit reached (0x%lx). "
1671 port->adapter->max_mc_mac);
1675 for (i = 0, k_mcl_entry = dev->mc_list;
1677 i++, k_mcl_entry = k_mcl_entry->next) {
1678 ehea_add_multicast_entry(port, k_mcl_entry->dmi_addr);
1685 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1687 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1693 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
1694 struct ehea_swqe *swqe, u32 lkey)
1696 if (skb->protocol == htons(ETH_P_IP)) {
1697 const struct iphdr *iph = ip_hdr(skb);
1699 swqe->tx_control |= EHEA_SWQE_CRC
1700 | EHEA_SWQE_IP_CHECKSUM
1701 | EHEA_SWQE_TCP_CHECKSUM
1702 | EHEA_SWQE_IMM_DATA_PRESENT
1703 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1705 write_ip_start_end(swqe, skb);
1707 if (iph->protocol == IPPROTO_UDP) {
1708 if ((iph->frag_off & IP_MF) ||
1709 (iph->frag_off & IP_OFFSET))
1710 /* IP fragment, so don't change cs */
1711 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
1713 write_udp_offset_end(swqe, skb);
1715 } else if (iph->protocol == IPPROTO_TCP) {
1716 write_tcp_offset_end(swqe, skb);
1719 /* icmp (big data) and ip segmentation packets (all other ip
1720 packets) do not require any special handling */
1723 /* Other Ethernet Protocol */
1724 swqe->tx_control |= EHEA_SWQE_CRC
1725 | EHEA_SWQE_IMM_DATA_PRESENT
1726 | EHEA_SWQE_DESCRIPTORS_PRESENT;
1729 write_swqe2_data(skb, dev, swqe, lkey);
1732 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
1733 struct ehea_swqe *swqe)
1735 int nfrags = skb_shinfo(skb)->nr_frags;
1736 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
1740 if (skb->protocol == htons(ETH_P_IP)) {
1741 const struct iphdr *iph = ip_hdr(skb);
1743 write_ip_start_end(swqe, skb);
1745 if (iph->protocol == IPPROTO_TCP) {
1746 swqe->tx_control |= EHEA_SWQE_CRC
1747 | EHEA_SWQE_IP_CHECKSUM
1748 | EHEA_SWQE_TCP_CHECKSUM
1749 | EHEA_SWQE_IMM_DATA_PRESENT;
1751 write_tcp_offset_end(swqe, skb);
1753 } else if (iph->protocol == IPPROTO_UDP) {
1754 if ((iph->frag_off & IP_MF) ||
1755 (iph->frag_off & IP_OFFSET))
1756 /* IP fragment, so don't change cs */
1757 swqe->tx_control |= EHEA_SWQE_CRC
1758 | EHEA_SWQE_IMM_DATA_PRESENT;
1760 swqe->tx_control |= EHEA_SWQE_CRC
1761 | EHEA_SWQE_IP_CHECKSUM
1762 | EHEA_SWQE_TCP_CHECKSUM
1763 | EHEA_SWQE_IMM_DATA_PRESENT;
1765 write_udp_offset_end(swqe, skb);
1768 /* icmp (big data) and
1769 ip segmentation packets (all other ip packets) */
1770 swqe->tx_control |= EHEA_SWQE_CRC
1771 | EHEA_SWQE_IP_CHECKSUM
1772 | EHEA_SWQE_IMM_DATA_PRESENT;
1775 /* Other Ethernet Protocol */
1776 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
1778 /* copy (immediate) data */
1780 /* data is in a single piece */
1781 skb_copy_from_linear_data(skb, imm_data, skb->len);
1783 /* first copy data from the skb->data buffer ... */
1784 skb_copy_from_linear_data(skb, imm_data,
1785 skb->len - skb->data_len);
1786 imm_data += skb->len - skb->data_len;
1788 /* ... then copy data from the fragments */
1789 for (i = 0; i < nfrags; i++) {
1790 frag = &skb_shinfo(skb)->frags[i];
1792 page_address(frag->page) + frag->page_offset,
1794 imm_data += frag->size;
1797 swqe->immediate_data_length = skb->len;
1801 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
1806 if ((skb->protocol == htons(ETH_P_IP)) &&
1807 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
1808 tcp = (struct tcphdr*)(skb_network_header(skb) + (ip_hdr(skb)->ihl * 4));
1809 tmp = (tcp->source + (tcp->dest << 16)) % 31;
1810 tmp += ip_hdr(skb)->daddr % 31;
1811 return tmp % num_qps;
1817 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
1819 struct ehea_port *port = netdev_priv(dev);
1820 struct ehea_swqe *swqe;
1821 unsigned long flags;
1824 struct ehea_port_res *pr;
1826 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
1828 if (!spin_trylock(&pr->xmit_lock))
1829 return NETDEV_TX_BUSY;
1831 if (pr->queue_stopped) {
1832 spin_unlock(&pr->xmit_lock);
1833 return NETDEV_TX_BUSY;
1836 swqe = ehea_get_swqe(pr->qp, &swqe_index);
1837 memset(swqe, 0, SWQE_HEADER_SIZE);
1838 atomic_dec(&pr->swqe_avail);
1840 if (skb->len <= SWQE3_MAX_IMM) {
1841 u32 sig_iv = port->sig_comp_iv;
1842 u32 swqe_num = pr->swqe_id_counter;
1843 ehea_xmit3(skb, dev, swqe);
1844 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
1845 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
1846 if (pr->swqe_ll_count >= (sig_iv - 1)) {
1847 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
1849 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1850 pr->swqe_ll_count = 0;
1852 pr->swqe_ll_count += 1;
1855 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
1856 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
1857 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
1858 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
1859 pr->sq_skba.arr[pr->sq_skba.index] = skb;
1861 pr->sq_skba.index++;
1862 pr->sq_skba.index &= (pr->sq_skba.len - 1);
1864 lkey = pr->send_mr.lkey;
1865 ehea_xmit2(skb, dev, swqe, lkey);
1866 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
1868 pr->swqe_id_counter += 1;
1870 if (port->vgrp && vlan_tx_tag_present(skb)) {
1871 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
1872 swqe->vlan_tag = vlan_tx_tag_get(skb);
1875 if (netif_msg_tx_queued(port)) {
1876 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
1877 ehea_dump(swqe, 512, "swqe");
1880 ehea_post_swqe(pr->qp, swqe);
1883 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1884 spin_lock_irqsave(&pr->netif_queue, flags);
1885 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
1886 pr->p_stats.queue_stopped++;
1887 netif_stop_queue(dev);
1888 pr->queue_stopped = 1;
1890 spin_unlock_irqrestore(&pr->netif_queue, flags);
1892 dev->trans_start = jiffies;
1893 spin_unlock(&pr->xmit_lock);
1895 return NETDEV_TX_OK;
1898 static void ehea_vlan_rx_register(struct net_device *dev,
1899 struct vlan_group *grp)
1901 struct ehea_port *port = netdev_priv(dev);
1902 struct ehea_adapter *adapter = port->adapter;
1903 struct hcp_ehea_port_cb1 *cb1;
1908 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1910 ehea_error("no mem for cb1");
1914 memset(cb1->vlan_filter, 0, sizeof(cb1->vlan_filter));
1916 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1917 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1918 if (hret != H_SUCCESS)
1919 ehea_error("modify_ehea_port failed");
1926 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
1928 struct ehea_port *port = netdev_priv(dev);
1929 struct ehea_adapter *adapter = port->adapter;
1930 struct hcp_ehea_port_cb1 *cb1;
1934 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1936 ehea_error("no mem for cb1");
1940 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1941 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1942 if (hret != H_SUCCESS) {
1943 ehea_error("query_ehea_port failed");
1948 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
1950 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1951 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1952 if (hret != H_SUCCESS)
1953 ehea_error("modify_ehea_port failed");
1959 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
1961 struct ehea_port *port = netdev_priv(dev);
1962 struct ehea_adapter *adapter = port->adapter;
1963 struct hcp_ehea_port_cb1 *cb1;
1967 vlan_group_set_device(port->vgrp, vid, NULL);
1969 cb1 = kzalloc(PAGE_SIZE, GFP_KERNEL);
1971 ehea_error("no mem for cb1");
1975 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
1976 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1977 if (hret != H_SUCCESS) {
1978 ehea_error("query_ehea_port failed");
1983 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
1985 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
1986 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
1987 if (hret != H_SUCCESS)
1988 ehea_error("modify_ehea_port failed");
1994 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2000 struct hcp_modify_qp_cb0* cb0;
2002 cb0 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2008 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2009 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2010 if (hret != H_SUCCESS) {
2011 ehea_error("query_ehea_qp failed (1)");
2015 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2016 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2017 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2018 &dummy64, &dummy64, &dummy16, &dummy16);
2019 if (hret != H_SUCCESS) {
2020 ehea_error("modify_ehea_qp failed (1)");
2024 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2025 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2026 if (hret != H_SUCCESS) {
2027 ehea_error("query_ehea_qp failed (2)");
2031 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2032 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2033 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2034 &dummy64, &dummy64, &dummy16, &dummy16);
2035 if (hret != H_SUCCESS) {
2036 ehea_error("modify_ehea_qp failed (2)");
2040 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2041 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2042 if (hret != H_SUCCESS) {
2043 ehea_error("query_ehea_qp failed (3)");
2047 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2048 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2049 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2050 &dummy64, &dummy64, &dummy16, &dummy16);
2051 if (hret != H_SUCCESS) {
2052 ehea_error("modify_ehea_qp failed (3)");
2056 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2057 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2058 if (hret != H_SUCCESS) {
2059 ehea_error("query_ehea_qp failed (4)");
2069 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2073 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2074 enum ehea_eq_type eq_type = EHEA_EQ;
2076 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2077 EHEA_MAX_ENTRIES_EQ, 1);
2080 ehea_error("ehea_create_eq failed (qp_eq)");
2084 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2085 pr_cfg.max_entries_scq = sq_entries * 2;
2086 pr_cfg.max_entries_sq = sq_entries;
2087 pr_cfg.max_entries_rq1 = rq1_entries;
2088 pr_cfg.max_entries_rq2 = rq2_entries;
2089 pr_cfg.max_entries_rq3 = rq3_entries;
2091 pr_cfg_small_rx.max_entries_rcq = 1;
2092 pr_cfg_small_rx.max_entries_scq = sq_entries;
2093 pr_cfg_small_rx.max_entries_sq = sq_entries;
2094 pr_cfg_small_rx.max_entries_rq1 = 1;
2095 pr_cfg_small_rx.max_entries_rq2 = 1;
2096 pr_cfg_small_rx.max_entries_rq3 = 1;
2098 for (i = 0; i < def_qps; i++) {
2099 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2103 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2104 ret = ehea_init_port_res(port, &port->port_res[i],
2105 &pr_cfg_small_rx, i);
2114 ehea_clean_portres(port, &port->port_res[i]);
2117 ehea_destroy_eq(port->qp_eq);
2121 static int ehea_clean_all_portres(struct ehea_port *port)
2126 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2127 ret |= ehea_clean_portres(port, &port->port_res[i]);
2129 ret |= ehea_destroy_eq(port->qp_eq);
2134 static void ehea_remove_adapter_mr (struct ehea_adapter *adapter)
2138 for (i=0; i < EHEA_MAX_PORTS; i++)
2139 if (adapter->port[i])
2142 ehea_rem_mr(&adapter->mr);
2145 static int ehea_add_adapter_mr (struct ehea_adapter *adapter)
2149 for (i=0; i < EHEA_MAX_PORTS; i++)
2150 if (adapter->port[i])
2153 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2156 static int ehea_up(struct net_device *dev)
2159 struct ehea_port *port = netdev_priv(dev);
2162 if (port->state == EHEA_PORT_UP)
2165 ret = ehea_port_res_setup(port, port->num_def_qps,
2166 port->num_add_tx_qps);
2168 ehea_error("port_res_failed");
2172 /* Set default QP for this port */
2173 ret = ehea_configure_port(port);
2175 ehea_error("ehea_configure_port failed. ret:%d", ret);
2179 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2182 ehea_error("out_clean_pr");
2185 mac_addr = (*(u64*)dev->dev_addr) >> 16;
2187 ret = ehea_reg_interrupts(dev);
2189 ehea_error("out_dereg_bc");
2193 for(i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2194 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2196 ehea_error("activate_qp failed");
2201 for(i = 0; i < port->num_def_qps; i++) {
2202 ret = ehea_fill_port_res(&port->port_res[i]);
2204 ehea_error("out_free_irqs");
2210 port->state = EHEA_PORT_UP;
2214 ehea_free_interrupts(dev);
2217 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2220 ehea_clean_all_portres(port);
2225 static int ehea_open(struct net_device *dev)
2228 struct ehea_port *port = netdev_priv(dev);
2230 down(&port->port_lock);
2232 if (netif_msg_ifup(port))
2233 ehea_info("enabling port %s", dev->name);
2237 netif_start_queue(dev);
2239 up(&port->port_lock);
2244 static int ehea_down(struct net_device *dev)
2247 struct ehea_port *port = netdev_priv(dev);
2249 if (port->state == EHEA_PORT_DOWN)
2252 ehea_drop_multicast_list(dev);
2253 ehea_free_interrupts(dev);
2255 for (i = 0; i < port->num_def_qps; i++)
2256 while (test_bit(__LINK_STATE_RX_SCHED,
2257 &port->port_res[i].d_netdev->state))
2260 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2261 ret = ehea_clean_all_portres(port);
2262 port->state = EHEA_PORT_DOWN;
2266 static int ehea_stop(struct net_device *dev)
2269 struct ehea_port *port = netdev_priv(dev);
2271 if (netif_msg_ifdown(port))
2272 ehea_info("disabling port %s", dev->name);
2274 flush_workqueue(port->adapter->ehea_wq);
2275 down(&port->port_lock);
2276 netif_stop_queue(dev);
2277 ret = ehea_down(dev);
2278 up(&port->port_lock);
2282 static void ehea_reset_port(struct work_struct *work)
2285 struct ehea_port *port =
2286 container_of(work, struct ehea_port, reset_task);
2287 struct net_device *dev = port->netdev;
2290 down(&port->port_lock);
2291 netif_stop_queue(dev);
2292 netif_poll_disable(dev);
2294 ret = ehea_down(dev);
2296 ehea_error("ehea_down failed. not all resources are freed");
2300 ehea_error("Reset device %s failed: ret=%d", dev->name, ret);
2304 if (netif_msg_timer(port))
2305 ehea_info("Device %s resetted successfully", dev->name);
2307 netif_poll_enable(dev);
2308 netif_wake_queue(dev);
2310 up(&port->port_lock);
2314 static void ehea_tx_watchdog(struct net_device *dev)
2316 struct ehea_port *port = netdev_priv(dev);
2318 if (netif_carrier_ok(dev))
2319 queue_work(port->adapter->ehea_wq, &port->reset_task);
2322 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2324 struct hcp_query_ehea *cb;
2328 cb = kzalloc(PAGE_SIZE, GFP_KERNEL);
2334 hret = ehea_h_query_ehea(adapter->handle, cb);
2336 if (hret != H_SUCCESS) {
2341 adapter->max_mc_mac = cb->max_mc_mac - 1;
2350 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
2352 struct hcp_ehea_port_cb4 *cb4;
2358 /* (Try to) enable *jumbo frames */
2359 cb4 = kzalloc(PAGE_SIZE, GFP_KERNEL);
2361 ehea_error("no mem for cb4");
2365 hret = ehea_h_query_ehea_port(port->adapter->handle,
2366 port->logical_port_id,
2368 H_PORT_CB4_JUMBO, cb4);
2369 if (hret == H_SUCCESS) {
2370 if (cb4->jumbo_frame)
2373 cb4->jumbo_frame = 1;
2374 hret = ehea_h_modify_ehea_port(port->adapter->
2381 if (hret == H_SUCCESS)
2393 static ssize_t ehea_show_port_id(struct device *dev,
2394 struct device_attribute *attr, char *buf)
2396 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2397 return sprintf(buf, "0x%X", port->logical_port_id);
2400 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2403 static void __devinit logical_port_release(struct device *dev)
2405 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2406 of_node_put(port->ofdev.node);
2409 static int ehea_driver_sysfs_add(struct device *dev,
2410 struct device_driver *driver)
2414 ret = sysfs_create_link(&driver->kobj, &dev->kobj,
2415 kobject_name(&dev->kobj));
2417 ret = sysfs_create_link(&dev->kobj, &driver->kobj,
2420 sysfs_remove_link(&driver->kobj,
2421 kobject_name(&dev->kobj));
2426 static void ehea_driver_sysfs_remove(struct device *dev,
2427 struct device_driver *driver)
2429 struct device_driver *drv = driver;
2432 sysfs_remove_link(&drv->kobj, kobject_name(&dev->kobj));
2433 sysfs_remove_link(&dev->kobj, "driver");
2437 static struct device *ehea_register_port(struct ehea_port *port,
2438 struct device_node *dn)
2442 port->ofdev.node = of_node_get(dn);
2443 port->ofdev.dev.parent = &port->adapter->ebus_dev->ofdev.dev;
2444 port->ofdev.dev.bus = &ibmebus_bus_type;
2446 sprintf(port->ofdev.dev.bus_id, "port%d", port_name_cnt++);
2447 port->ofdev.dev.release = logical_port_release;
2449 ret = of_device_register(&port->ofdev);
2451 ehea_error("failed to register device. ret=%d", ret);
2455 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
2457 ehea_error("failed to register attributes, ret=%d", ret);
2458 goto out_unreg_of_dev;
2461 ret = ehea_driver_sysfs_add(&port->ofdev.dev, &ehea_driver.driver);
2463 ehea_error("failed to register sysfs driver link");
2464 goto out_rem_dev_file;
2467 return &port->ofdev.dev;
2470 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2472 of_device_unregister(&port->ofdev);
2477 static void ehea_unregister_port(struct ehea_port *port)
2479 ehea_driver_sysfs_remove(&port->ofdev.dev, &ehea_driver.driver);
2480 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2481 of_device_unregister(&port->ofdev);
2484 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
2485 u32 logical_port_id,
2486 struct device_node *dn)
2489 struct net_device *dev;
2490 struct ehea_port *port;
2491 struct device *port_dev;
2494 /* allocate memory for the port structures */
2495 dev = alloc_etherdev(sizeof(struct ehea_port));
2498 ehea_error("no mem for net_device");
2503 port = netdev_priv(dev);
2505 sema_init(&port->port_lock, 1);
2506 port->state = EHEA_PORT_DOWN;
2507 port->sig_comp_iv = sq_entries / 10;
2509 port->adapter = adapter;
2511 port->logical_port_id = logical_port_id;
2513 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2515 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2516 if (!port->mc_list) {
2518 goto out_free_ethdev;
2521 INIT_LIST_HEAD(&port->mc_list->list);
2523 ret = ehea_sense_port_attr(port);
2525 goto out_free_mc_list;
2527 port_dev = ehea_register_port(port, dn);
2529 goto out_free_mc_list;
2531 SET_NETDEV_DEV(dev, port_dev);
2533 /* initialize net_device structure */
2534 SET_MODULE_OWNER(dev);
2536 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
2538 dev->open = ehea_open;
2539 dev->poll = ehea_poll;
2541 dev->stop = ehea_stop;
2542 dev->hard_start_xmit = ehea_start_xmit;
2543 dev->get_stats = ehea_get_stats;
2544 dev->set_multicast_list = ehea_set_multicast_list;
2545 dev->set_mac_address = ehea_set_mac_addr;
2546 dev->change_mtu = ehea_change_mtu;
2547 dev->vlan_rx_register = ehea_vlan_rx_register;
2548 dev->vlan_rx_add_vid = ehea_vlan_rx_add_vid;
2549 dev->vlan_rx_kill_vid = ehea_vlan_rx_kill_vid;
2550 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
2551 | NETIF_F_HIGHDMA | NETIF_F_HW_CSUM | NETIF_F_HW_VLAN_TX
2552 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
2554 dev->tx_timeout = &ehea_tx_watchdog;
2555 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
2557 INIT_WORK(&port->reset_task, ehea_reset_port);
2559 ehea_set_ethtool_ops(dev);
2561 ret = register_netdev(dev);
2563 ehea_error("register_netdev failed. ret=%d", ret);
2564 goto out_unreg_port;
2567 ret = ehea_get_jumboframe_status(port, &jumbo);
2569 ehea_error("failed determining jumbo frame status for %s",
2570 port->netdev->name);
2572 ehea_info("%s: Jumbo frames are %sabled", dev->name,
2573 jumbo == 1 ? "en" : "dis");
2578 ehea_unregister_port(port);
2581 kfree(port->mc_list);
2587 ehea_error("setting up logical port with id=%d failed, ret=%d",
2588 logical_port_id, ret);
2592 static void ehea_shutdown_single_port(struct ehea_port *port)
2594 unregister_netdev(port->netdev);
2595 ehea_unregister_port(port);
2596 kfree(port->mc_list);
2597 free_netdev(port->netdev);
2600 static int ehea_setup_ports(struct ehea_adapter *adapter)
2602 struct device_node *lhea_dn;
2603 struct device_node *eth_dn = NULL;
2604 const u32 *dn_log_port_id;
2607 lhea_dn = adapter->ebus_dev->ofdev.node;
2608 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
2610 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
2612 if (!dn_log_port_id) {
2613 ehea_error("bad device node: eth_dn name=%s",
2618 if (ehea_add_adapter_mr(adapter)) {
2619 ehea_error("creating MR failed");
2620 of_node_put(eth_dn);
2624 adapter->port[i] = ehea_setup_single_port(adapter,
2627 if (adapter->port[i])
2628 ehea_info("%s -> logical port id #%d",
2629 adapter->port[i]->netdev->name,
2632 ehea_remove_adapter_mr(adapter);
2640 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
2641 u32 logical_port_id)
2643 struct device_node *lhea_dn;
2644 struct device_node *eth_dn = NULL;
2645 const u32 *dn_log_port_id;
2647 lhea_dn = adapter->ebus_dev->ofdev.node;
2648 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
2650 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
2653 if (*dn_log_port_id == logical_port_id)
2660 static ssize_t ehea_probe_port(struct device *dev,
2661 struct device_attribute *attr,
2662 const char *buf, size_t count)
2664 struct ehea_adapter *adapter = dev->driver_data;
2665 struct ehea_port *port;
2666 struct device_node *eth_dn = NULL;
2669 u32 logical_port_id;
2671 sscanf(buf, "%X", &logical_port_id);
2673 port = ehea_get_port(adapter, logical_port_id);
2676 ehea_info("adding port with logical port id=%d failed. port "
2677 "already configured as %s.", logical_port_id,
2678 port->netdev->name);
2682 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
2685 ehea_info("no logical port with id %d found", logical_port_id);
2689 if (ehea_add_adapter_mr(adapter)) {
2690 ehea_error("creating MR failed");
2694 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
2696 of_node_put(eth_dn);
2699 for (i=0; i < EHEA_MAX_PORTS; i++)
2700 if (!adapter->port[i]) {
2701 adapter->port[i] = port;
2705 ehea_info("added %s (logical port id=%d)", port->netdev->name,
2708 ehea_remove_adapter_mr(adapter);
2712 return (ssize_t) count;
2715 static ssize_t ehea_remove_port(struct device *dev,
2716 struct device_attribute *attr,
2717 const char *buf, size_t count)
2719 struct ehea_adapter *adapter = dev->driver_data;
2720 struct ehea_port *port;
2722 u32 logical_port_id;
2724 sscanf(buf, "%X", &logical_port_id);
2726 port = ehea_get_port(adapter, logical_port_id);
2729 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
2732 ehea_shutdown_single_port(port);
2734 for (i=0; i < EHEA_MAX_PORTS; i++)
2735 if (adapter->port[i] == port) {
2736 adapter->port[i] = NULL;
2740 ehea_error("removing port with logical port id=%d failed. port "
2741 "not configured.", logical_port_id);
2745 ehea_remove_adapter_mr(adapter);
2747 return (ssize_t) count;
2750 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
2751 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
2753 int ehea_create_device_sysfs(struct ibmebus_dev *dev)
2755 int ret = device_create_file(&dev->ofdev.dev, &dev_attr_probe_port);
2759 ret = device_create_file(&dev->ofdev.dev, &dev_attr_remove_port);
2764 void ehea_remove_device_sysfs(struct ibmebus_dev *dev)
2766 device_remove_file(&dev->ofdev.dev, &dev_attr_probe_port);
2767 device_remove_file(&dev->ofdev.dev, &dev_attr_remove_port);
2770 static int __devinit ehea_probe_adapter(struct ibmebus_dev *dev,
2771 const struct of_device_id *id)
2773 struct ehea_adapter *adapter;
2774 const u64 *adapter_handle;
2777 if (!dev || !dev->ofdev.node) {
2778 ehea_error("Invalid ibmebus device probed");
2782 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
2785 dev_err(&dev->ofdev.dev, "no mem for ehea_adapter\n");
2789 adapter->ebus_dev = dev;
2791 adapter_handle = of_get_property(dev->ofdev.node, "ibm,hea-handle",
2794 adapter->handle = *adapter_handle;
2796 if (!adapter->handle) {
2797 dev_err(&dev->ofdev.dev, "failed getting handle for adapter"
2798 " '%s'\n", dev->ofdev.node->full_name);
2803 adapter->pd = EHEA_PD_ID;
2805 dev->ofdev.dev.driver_data = adapter;
2808 /* initialize adapter and ports */
2809 /* get adapter properties */
2810 ret = ehea_sense_adapter_attr(adapter);
2812 dev_err(&dev->ofdev.dev, "sense_adapter_attr failed: %d", ret);
2816 adapter->neq = ehea_create_eq(adapter,
2817 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
2818 if (!adapter->neq) {
2820 dev_err(&dev->ofdev.dev, "NEQ creation failed");
2824 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
2825 (unsigned long)adapter);
2827 ret = ibmebus_request_irq(NULL, adapter->neq->attr.ist1,
2828 ehea_interrupt_neq, IRQF_DISABLED,
2829 "ehea_neq", adapter);
2831 dev_err(&dev->ofdev.dev, "requesting NEQ IRQ failed");
2835 adapter->ehea_wq = create_workqueue("ehea_wq");
2836 if (!adapter->ehea_wq) {
2841 ret = ehea_create_device_sysfs(dev);
2845 ret = ehea_setup_ports(adapter);
2847 dev_err(&dev->ofdev.dev, "setup_ports failed");
2848 goto out_rem_dev_sysfs;
2855 ehea_remove_device_sysfs(dev);
2858 destroy_workqueue(adapter->ehea_wq);
2861 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2864 ehea_destroy_eq(adapter->neq);
2872 static int __devexit ehea_remove(struct ibmebus_dev *dev)
2874 struct ehea_adapter *adapter = dev->ofdev.dev.driver_data;
2877 for (i = 0; i < EHEA_MAX_PORTS; i++)
2878 if (adapter->port[i]) {
2879 ehea_shutdown_single_port(adapter->port[i]);
2880 adapter->port[i] = NULL;
2883 ehea_remove_device_sysfs(dev);
2885 destroy_workqueue(adapter->ehea_wq);
2887 ibmebus_free_irq(NULL, adapter->neq->attr.ist1, adapter);
2888 tasklet_kill(&adapter->neq_tasklet);
2890 ehea_destroy_eq(adapter->neq);
2891 ehea_remove_adapter_mr(adapter);
2896 static int check_module_parm(void)
2900 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
2901 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
2902 ehea_info("Bad parameter: rq1_entries");
2905 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
2906 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
2907 ehea_info("Bad parameter: rq2_entries");
2910 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
2911 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
2912 ehea_info("Bad parameter: rq3_entries");
2915 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
2916 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
2917 ehea_info("Bad parameter: sq_entries");
2924 int __init ehea_module_init(void)
2928 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
2931 ret = check_module_parm();
2934 ret = ibmebus_register_driver(&ehea_driver);
2936 ehea_error("failed registering eHEA device driver on ebus");
2942 static void __exit ehea_module_exit(void)
2944 ibmebus_unregister_driver(&ehea_driver);
2947 module_init(ehea_module_init);
2948 module_exit(ehea_module_exit);