2 * linux/drivers/net/ethernet/ibm/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.
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
33 #include <linux/tcp.h>
34 #include <linux/udp.h>
36 #include <linux/list.h>
37 #include <linux/slab.h>
38 #include <linux/if_ether.h>
39 #include <linux/notifier.h>
40 #include <linux/reboot.h>
41 #include <linux/memory.h>
42 #include <asm/kexec.h>
43 #include <linux/mutex.h>
44 #include <linux/prefetch.h>
50 #include "ehea_phyp.h"
53 MODULE_LICENSE("GPL");
54 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
55 MODULE_DESCRIPTION("IBM eServer HEA Driver");
56 MODULE_VERSION(DRV_VERSION);
59 static int msg_level = -1;
60 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
61 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
62 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
63 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
64 static int use_mcs = 1;
65 static int prop_carrier_state;
67 module_param(msg_level, int, 0);
68 module_param(rq1_entries, int, 0);
69 module_param(rq2_entries, int, 0);
70 module_param(rq3_entries, int, 0);
71 module_param(sq_entries, int, 0);
72 module_param(prop_carrier_state, int, 0);
73 module_param(use_mcs, int, 0);
75 MODULE_PARM_DESC(msg_level, "msg_level");
76 MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
77 "port to stack. 1:yes, 0:no. Default = 0 ");
78 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
79 "[2^x - 1], x = [7..14]. Default = "
80 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
81 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
82 "[2^x - 1], x = [7..14]. Default = "
83 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
84 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
85 "[2^x - 1], x = [7..14]. Default = "
86 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
87 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
88 "[2^x - 1], x = [7..14]. Default = "
89 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
90 MODULE_PARM_DESC(use_mcs, " Multiple receive queues, 1: enable, 0: disable, "
93 static int port_name_cnt;
94 static LIST_HEAD(adapter_list);
95 static unsigned long ehea_driver_flags;
96 static DEFINE_MUTEX(dlpar_mem_lock);
97 static struct ehea_fw_handle_array ehea_fw_handles;
98 static struct ehea_bcmc_reg_array ehea_bcmc_regs;
101 static int ehea_probe_adapter(struct platform_device *dev,
102 const struct of_device_id *id);
104 static int ehea_remove(struct platform_device *dev);
106 static struct of_device_id ehea_device_table[] = {
109 .compatible = "IBM,lhea",
113 MODULE_DEVICE_TABLE(of, ehea_device_table);
115 static struct of_platform_driver ehea_driver = {
118 .owner = THIS_MODULE,
119 .of_match_table = ehea_device_table,
121 .probe = ehea_probe_adapter,
122 .remove = ehea_remove,
125 void ehea_dump(void *adr, int len, char *msg)
128 unsigned char *deb = adr;
129 for (x = 0; x < len; x += 16) {
130 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
131 msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
136 static void ehea_schedule_port_reset(struct ehea_port *port)
138 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
139 schedule_work(&port->reset_task);
142 static void ehea_update_firmware_handles(void)
144 struct ehea_fw_handle_entry *arr = NULL;
145 struct ehea_adapter *adapter;
146 int num_adapters = 0;
150 int num_fw_handles, k, l;
152 /* Determine number of handles */
153 mutex_lock(&ehea_fw_handles.lock);
155 list_for_each_entry(adapter, &adapter_list, list) {
158 for (k = 0; k < EHEA_MAX_PORTS; k++) {
159 struct ehea_port *port = adapter->port[k];
161 if (!port || (port->state != EHEA_PORT_UP))
165 num_portres += port->num_def_qps;
169 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
170 num_ports * EHEA_NUM_PORT_FW_HANDLES +
171 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
173 if (num_fw_handles) {
174 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
176 goto out; /* Keep the existing array */
180 list_for_each_entry(adapter, &adapter_list, list) {
181 if (num_adapters == 0)
184 for (k = 0; k < EHEA_MAX_PORTS; k++) {
185 struct ehea_port *port = adapter->port[k];
187 if (!port || (port->state != EHEA_PORT_UP) ||
191 for (l = 0; l < port->num_def_qps; l++) {
192 struct ehea_port_res *pr = &port->port_res[l];
194 arr[i].adh = adapter->handle;
195 arr[i++].fwh = pr->qp->fw_handle;
196 arr[i].adh = adapter->handle;
197 arr[i++].fwh = pr->send_cq->fw_handle;
198 arr[i].adh = adapter->handle;
199 arr[i++].fwh = pr->recv_cq->fw_handle;
200 arr[i].adh = adapter->handle;
201 arr[i++].fwh = pr->eq->fw_handle;
202 arr[i].adh = adapter->handle;
203 arr[i++].fwh = pr->send_mr.handle;
204 arr[i].adh = adapter->handle;
205 arr[i++].fwh = pr->recv_mr.handle;
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = port->qp_eq->fw_handle;
212 arr[i].adh = adapter->handle;
213 arr[i++].fwh = adapter->neq->fw_handle;
215 if (adapter->mr.handle) {
216 arr[i].adh = adapter->handle;
217 arr[i++].fwh = adapter->mr.handle;
223 kfree(ehea_fw_handles.arr);
224 ehea_fw_handles.arr = arr;
225 ehea_fw_handles.num_entries = i;
227 mutex_unlock(&ehea_fw_handles.lock);
230 static void ehea_update_bcmc_registrations(void)
233 struct ehea_bcmc_reg_entry *arr = NULL;
234 struct ehea_adapter *adapter;
235 struct ehea_mc_list *mc_entry;
236 int num_registrations = 0;
240 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
242 /* Determine number of registrations */
243 list_for_each_entry(adapter, &adapter_list, list)
244 for (k = 0; k < EHEA_MAX_PORTS; k++) {
245 struct ehea_port *port = adapter->port[k];
247 if (!port || (port->state != EHEA_PORT_UP))
250 num_registrations += 2; /* Broadcast registrations */
252 list_for_each_entry(mc_entry, &port->mc_list->list,list)
253 num_registrations += 2;
256 if (num_registrations) {
257 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
259 goto out; /* Keep the existing array */
263 list_for_each_entry(adapter, &adapter_list, list) {
264 for (k = 0; k < EHEA_MAX_PORTS; k++) {
265 struct ehea_port *port = adapter->port[k];
267 if (!port || (port->state != EHEA_PORT_UP))
270 if (num_registrations == 0)
273 arr[i].adh = adapter->handle;
274 arr[i].port_id = port->logical_port_id;
275 arr[i].reg_type = EHEA_BCMC_BROADCAST |
277 arr[i++].macaddr = port->mac_addr;
279 arr[i].adh = adapter->handle;
280 arr[i].port_id = port->logical_port_id;
281 arr[i].reg_type = EHEA_BCMC_BROADCAST |
282 EHEA_BCMC_VLANID_ALL;
283 arr[i++].macaddr = port->mac_addr;
284 num_registrations -= 2;
286 list_for_each_entry(mc_entry,
287 &port->mc_list->list, list) {
288 if (num_registrations == 0)
291 arr[i].adh = adapter->handle;
292 arr[i].port_id = port->logical_port_id;
293 arr[i].reg_type = EHEA_BCMC_MULTICAST |
295 if (mc_entry->macaddr == 0)
296 arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL;
297 arr[i++].macaddr = mc_entry->macaddr;
299 arr[i].adh = adapter->handle;
300 arr[i].port_id = port->logical_port_id;
301 arr[i].reg_type = EHEA_BCMC_MULTICAST |
302 EHEA_BCMC_VLANID_ALL;
303 if (mc_entry->macaddr == 0)
304 arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL;
305 arr[i++].macaddr = mc_entry->macaddr;
306 num_registrations -= 2;
312 kfree(ehea_bcmc_regs.arr);
313 ehea_bcmc_regs.arr = arr;
314 ehea_bcmc_regs.num_entries = i;
316 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
319 static struct rtnl_link_stats64 *ehea_get_stats64(struct net_device *dev,
320 struct rtnl_link_stats64 *stats)
322 struct ehea_port *port = netdev_priv(dev);
323 u64 rx_packets = 0, tx_packets = 0, rx_bytes = 0, tx_bytes = 0;
326 for (i = 0; i < port->num_def_qps; i++) {
327 rx_packets += port->port_res[i].rx_packets;
328 rx_bytes += port->port_res[i].rx_bytes;
331 for (i = 0; i < port->num_def_qps; i++) {
332 tx_packets += port->port_res[i].tx_packets;
333 tx_bytes += port->port_res[i].tx_bytes;
336 stats->tx_packets = tx_packets;
337 stats->rx_bytes = rx_bytes;
338 stats->tx_bytes = tx_bytes;
339 stats->rx_packets = rx_packets;
341 stats->multicast = port->stats.multicast;
342 stats->rx_errors = port->stats.rx_errors;
346 static void ehea_update_stats(struct work_struct *work)
348 struct ehea_port *port =
349 container_of(work, struct ehea_port, stats_work.work);
350 struct net_device *dev = port->netdev;
351 struct rtnl_link_stats64 *stats = &port->stats;
352 struct hcp_ehea_port_cb2 *cb2;
355 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
357 netdev_err(dev, "No mem for cb2. Some interface statistics were not updated\n");
361 hret = ehea_h_query_ehea_port(port->adapter->handle,
362 port->logical_port_id,
363 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
364 if (hret != H_SUCCESS) {
365 netdev_err(dev, "query_ehea_port failed\n");
369 if (netif_msg_hw(port))
370 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
372 stats->multicast = cb2->rxmcp;
373 stats->rx_errors = cb2->rxuerr;
376 free_page((unsigned long)cb2);
378 schedule_delayed_work(&port->stats_work,
379 round_jiffies_relative(msecs_to_jiffies(1000)));
382 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
384 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
385 struct net_device *dev = pr->port->netdev;
386 int max_index_mask = pr->rq1_skba.len - 1;
387 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
391 pr->rq1_skba.os_skbs = 0;
393 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
395 pr->rq1_skba.index = index;
396 pr->rq1_skba.os_skbs = fill_wqes;
400 for (i = 0; i < fill_wqes; i++) {
401 if (!skb_arr_rq1[index]) {
402 skb_arr_rq1[index] = netdev_alloc_skb(dev,
404 if (!skb_arr_rq1[index]) {
405 pr->rq1_skba.os_skbs = fill_wqes - i;
410 index &= max_index_mask;
418 ehea_update_rq1a(pr->qp, adder);
421 static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
423 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
424 struct net_device *dev = pr->port->netdev;
427 if (nr_rq1a > pr->rq1_skba.len) {
428 netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
432 for (i = 0; i < nr_rq1a; i++) {
433 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
438 ehea_update_rq1a(pr->qp, i - 1);
441 static int ehea_refill_rq_def(struct ehea_port_res *pr,
442 struct ehea_q_skb_arr *q_skba, int rq_nr,
443 int num_wqes, int wqe_type, int packet_size)
445 struct net_device *dev = pr->port->netdev;
446 struct ehea_qp *qp = pr->qp;
447 struct sk_buff **skb_arr = q_skba->arr;
448 struct ehea_rwqe *rwqe;
449 int i, index, max_index_mask, fill_wqes;
453 fill_wqes = q_skba->os_skbs + num_wqes;
456 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
457 q_skba->os_skbs = fill_wqes;
461 index = q_skba->index;
462 max_index_mask = q_skba->len - 1;
463 for (i = 0; i < fill_wqes; i++) {
467 skb = netdev_alloc_skb_ip_align(dev, packet_size);
469 q_skba->os_skbs = fill_wqes - i;
470 if (q_skba->os_skbs == q_skba->len - 2) {
471 netdev_info(pr->port->netdev,
472 "rq%i ran dry - no mem for skb\n",
479 skb_arr[index] = skb;
480 tmp_addr = ehea_map_vaddr(skb->data);
481 if (tmp_addr == -1) {
483 q_skba->os_skbs = fill_wqes - i;
488 rwqe = ehea_get_next_rwqe(qp, rq_nr);
489 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
490 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
491 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
492 rwqe->sg_list[0].vaddr = tmp_addr;
493 rwqe->sg_list[0].len = packet_size;
494 rwqe->data_segments = 1;
497 index &= max_index_mask;
501 q_skba->index = index;
508 ehea_update_rq2a(pr->qp, adder);
510 ehea_update_rq3a(pr->qp, adder);
516 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
518 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
519 nr_of_wqes, EHEA_RWQE2_TYPE,
524 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
526 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
527 nr_of_wqes, EHEA_RWQE3_TYPE,
528 EHEA_MAX_PACKET_SIZE);
531 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
533 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
534 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
536 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
537 (cqe->header_length == 0))
542 static inline void ehea_fill_skb(struct net_device *dev,
543 struct sk_buff *skb, struct ehea_cqe *cqe,
544 struct ehea_port_res *pr)
546 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
548 skb_put(skb, length);
549 skb->protocol = eth_type_trans(skb, dev);
551 /* The packet was not an IPV4 packet so a complemented checksum was
552 calculated. The value is found in the Internet Checksum field. */
553 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
554 skb->ip_summed = CHECKSUM_COMPLETE;
555 skb->csum = csum_unfold(~cqe->inet_checksum_value);
557 skb->ip_summed = CHECKSUM_UNNECESSARY;
559 skb_record_rx_queue(skb, pr - &pr->port->port_res[0]);
562 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
564 struct ehea_cqe *cqe)
566 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
577 prefetchw(pref + EHEA_CACHE_LINE);
579 pref = (skb_array[x]->data);
581 prefetch(pref + EHEA_CACHE_LINE);
582 prefetch(pref + EHEA_CACHE_LINE * 2);
583 prefetch(pref + EHEA_CACHE_LINE * 3);
586 skb = skb_array[skb_index];
587 skb_array[skb_index] = NULL;
591 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
592 int arr_len, int wqe_index)
604 prefetchw(pref + EHEA_CACHE_LINE);
606 pref = (skb_array[x]->data);
608 prefetchw(pref + EHEA_CACHE_LINE);
611 skb = skb_array[wqe_index];
612 skb_array[wqe_index] = NULL;
616 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
617 struct ehea_cqe *cqe, int *processed_rq2,
622 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
623 pr->p_stats.err_tcp_cksum++;
624 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
625 pr->p_stats.err_ip_cksum++;
626 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
627 pr->p_stats.err_frame_crc++;
631 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
633 } else if (rq == 3) {
635 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
639 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
640 if (netif_msg_rx_err(pr->port)) {
641 pr_err("Critical receive error for QP %d. Resetting port.\n",
642 pr->qp->init_attr.qp_nr);
643 ehea_dump(cqe, sizeof(*cqe), "CQE");
645 ehea_schedule_port_reset(pr->port);
652 static int ehea_proc_rwqes(struct net_device *dev,
653 struct ehea_port_res *pr,
656 struct ehea_port *port = pr->port;
657 struct ehea_qp *qp = pr->qp;
658 struct ehea_cqe *cqe;
660 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
661 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
662 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
663 int skb_arr_rq1_len = pr->rq1_skba.len;
664 int skb_arr_rq2_len = pr->rq2_skba.len;
665 int skb_arr_rq3_len = pr->rq3_skba.len;
666 int processed, processed_rq1, processed_rq2, processed_rq3;
667 u64 processed_bytes = 0;
668 int wqe_index, last_wqe_index, rq, port_reset;
670 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
673 cqe = ehea_poll_rq1(qp, &wqe_index);
674 while ((processed < budget) && cqe) {
678 if (netif_msg_rx_status(port))
679 ehea_dump(cqe, sizeof(*cqe), "CQE");
681 last_wqe_index = wqe_index;
683 if (!ehea_check_cqe(cqe, &rq)) {
686 skb = get_skb_by_index_ll(skb_arr_rq1,
689 if (unlikely(!skb)) {
690 netif_info(port, rx_err, dev,
691 "LL rq1: skb=NULL\n");
693 skb = netdev_alloc_skb(dev,
698 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
699 cqe->num_bytes_transfered - 4);
700 ehea_fill_skb(dev, skb, cqe, pr);
701 } else if (rq == 2) {
703 skb = get_skb_by_index(skb_arr_rq2,
704 skb_arr_rq2_len, cqe);
705 if (unlikely(!skb)) {
706 netif_err(port, rx_err, dev,
710 ehea_fill_skb(dev, skb, cqe, pr);
714 skb = get_skb_by_index(skb_arr_rq3,
715 skb_arr_rq3_len, cqe);
716 if (unlikely(!skb)) {
717 netif_err(port, rx_err, dev,
721 ehea_fill_skb(dev, skb, cqe, pr);
725 processed_bytes += skb->len;
727 if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
728 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
731 napi_gro_receive(&pr->napi, skb);
733 pr->p_stats.poll_receive_errors++;
734 port_reset = ehea_treat_poll_error(pr, rq, cqe,
740 cqe = ehea_poll_rq1(qp, &wqe_index);
743 pr->rx_packets += processed;
744 pr->rx_bytes += processed_bytes;
746 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
747 ehea_refill_rq2(pr, processed_rq2);
748 ehea_refill_rq3(pr, processed_rq3);
753 #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
755 static void reset_sq_restart_flag(struct ehea_port *port)
759 for (i = 0; i < port->num_def_qps; i++) {
760 struct ehea_port_res *pr = &port->port_res[i];
761 pr->sq_restart_flag = 0;
763 wake_up(&port->restart_wq);
766 static void check_sqs(struct ehea_port *port)
768 struct ehea_swqe *swqe;
772 for (i = 0; i < port->num_def_qps; i++) {
773 struct ehea_port_res *pr = &port->port_res[i];
776 swqe = ehea_get_swqe(pr->qp, &swqe_index);
777 memset(swqe, 0, SWQE_HEADER_SIZE);
778 atomic_dec(&pr->swqe_avail);
780 swqe->tx_control |= EHEA_SWQE_PURGE;
781 swqe->wr_id = SWQE_RESTART_CHECK;
782 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
783 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
784 swqe->immediate_data_length = 80;
786 ehea_post_swqe(pr->qp, swqe);
788 ret = wait_event_timeout(port->restart_wq,
789 pr->sq_restart_flag == 0,
790 msecs_to_jiffies(100));
793 pr_err("HW/SW queues out of sync\n");
794 ehea_schedule_port_reset(pr->port);
801 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
804 struct ehea_cq *send_cq = pr->send_cq;
805 struct ehea_cqe *cqe;
806 int quota = my_quota;
810 struct netdev_queue *txq = netdev_get_tx_queue(pr->port->netdev,
811 pr - &pr->port->port_res[0]);
813 cqe = ehea_poll_cq(send_cq);
814 while (cqe && (quota > 0)) {
815 ehea_inc_cq(send_cq);
820 if (cqe->wr_id == SWQE_RESTART_CHECK) {
821 pr->sq_restart_flag = 1;
826 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
827 pr_err("Bad send completion status=0x%04X\n",
830 if (netif_msg_tx_err(pr->port))
831 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
833 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
834 pr_err("Resetting port\n");
835 ehea_schedule_port_reset(pr->port);
840 if (netif_msg_tx_done(pr->port))
841 ehea_dump(cqe, sizeof(*cqe), "CQE");
843 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
844 == EHEA_SWQE2_TYPE)) {
846 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
847 skb = pr->sq_skba.arr[index];
849 pr->sq_skba.arr[index] = NULL;
852 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
855 cqe = ehea_poll_cq(send_cq);
858 ehea_update_feca(send_cq, cqe_counter);
859 atomic_add(swqe_av, &pr->swqe_avail);
861 if (unlikely(netif_tx_queue_stopped(txq) &&
862 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))) {
863 __netif_tx_lock(txq, smp_processor_id());
864 if (netif_tx_queue_stopped(txq) &&
865 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))
866 netif_tx_wake_queue(txq);
867 __netif_tx_unlock(txq);
870 wake_up(&pr->port->swqe_avail_wq);
875 #define EHEA_POLL_MAX_CQES 65535
877 static int ehea_poll(struct napi_struct *napi, int budget)
879 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
881 struct net_device *dev = pr->port->netdev;
882 struct ehea_cqe *cqe;
883 struct ehea_cqe *cqe_skb = NULL;
887 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
888 rx += ehea_proc_rwqes(dev, pr, budget - rx);
890 while (rx != budget) {
892 ehea_reset_cq_ep(pr->recv_cq);
893 ehea_reset_cq_ep(pr->send_cq);
894 ehea_reset_cq_n1(pr->recv_cq);
895 ehea_reset_cq_n1(pr->send_cq);
897 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
898 cqe_skb = ehea_poll_cq(pr->send_cq);
900 if (!cqe && !cqe_skb)
903 if (!napi_reschedule(napi))
906 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
907 rx += ehea_proc_rwqes(dev, pr, budget - rx);
913 #ifdef CONFIG_NET_POLL_CONTROLLER
914 static void ehea_netpoll(struct net_device *dev)
916 struct ehea_port *port = netdev_priv(dev);
919 for (i = 0; i < port->num_def_qps; i++)
920 napi_schedule(&port->port_res[i].napi);
924 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
926 struct ehea_port_res *pr = param;
928 napi_schedule(&pr->napi);
933 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
935 struct ehea_port *port = param;
936 struct ehea_eqe *eqe;
939 u64 resource_type, aer, aerr;
942 eqe = ehea_poll_eq(port->qp_eq);
945 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
946 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
947 eqe->entry, qp_token);
949 qp = port->port_res[qp_token].qp;
951 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
954 if (resource_type == EHEA_AER_RESTYPE_QP) {
955 if ((aer & EHEA_AER_RESET_MASK) ||
956 (aerr & EHEA_AERR_RESET_MASK))
959 reset_port = 1; /* Reset in case of CQ or EQ error */
961 eqe = ehea_poll_eq(port->qp_eq);
965 pr_err("Resetting port\n");
966 ehea_schedule_port_reset(port);
972 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
977 for (i = 0; i < EHEA_MAX_PORTS; i++)
978 if (adapter->port[i])
979 if (adapter->port[i]->logical_port_id == logical_port)
980 return adapter->port[i];
984 int ehea_sense_port_attr(struct ehea_port *port)
988 struct hcp_ehea_port_cb0 *cb0;
990 /* may be called via ehea_neq_tasklet() */
991 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
993 pr_err("no mem for cb0\n");
998 hret = ehea_h_query_ehea_port(port->adapter->handle,
999 port->logical_port_id, H_PORT_CB0,
1000 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1002 if (hret != H_SUCCESS) {
1008 port->mac_addr = cb0->port_mac_addr << 16;
1010 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
1011 ret = -EADDRNOTAVAIL;
1016 switch (cb0->port_speed) {
1018 port->port_speed = EHEA_SPEED_10M;
1019 port->full_duplex = 0;
1022 port->port_speed = EHEA_SPEED_10M;
1023 port->full_duplex = 1;
1025 case H_SPEED_100M_H:
1026 port->port_speed = EHEA_SPEED_100M;
1027 port->full_duplex = 0;
1029 case H_SPEED_100M_F:
1030 port->port_speed = EHEA_SPEED_100M;
1031 port->full_duplex = 1;
1034 port->port_speed = EHEA_SPEED_1G;
1035 port->full_duplex = 1;
1038 port->port_speed = EHEA_SPEED_10G;
1039 port->full_duplex = 1;
1042 port->port_speed = 0;
1043 port->full_duplex = 0;
1048 port->num_mcs = cb0->num_default_qps;
1050 /* Number of default QPs */
1052 port->num_def_qps = cb0->num_default_qps;
1054 port->num_def_qps = 1;
1056 if (!port->num_def_qps) {
1063 if (ret || netif_msg_probe(port))
1064 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
1065 free_page((unsigned long)cb0);
1070 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1072 struct hcp_ehea_port_cb4 *cb4;
1076 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
1078 pr_err("no mem for cb4\n");
1083 cb4->port_speed = port_speed;
1085 netif_carrier_off(port->netdev);
1087 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1088 port->logical_port_id,
1089 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1090 if (hret == H_SUCCESS) {
1091 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1093 hret = ehea_h_query_ehea_port(port->adapter->handle,
1094 port->logical_port_id,
1095 H_PORT_CB4, H_PORT_CB4_SPEED,
1097 if (hret == H_SUCCESS) {
1098 switch (cb4->port_speed) {
1100 port->port_speed = EHEA_SPEED_10M;
1101 port->full_duplex = 0;
1104 port->port_speed = EHEA_SPEED_10M;
1105 port->full_duplex = 1;
1107 case H_SPEED_100M_H:
1108 port->port_speed = EHEA_SPEED_100M;
1109 port->full_duplex = 0;
1111 case H_SPEED_100M_F:
1112 port->port_speed = EHEA_SPEED_100M;
1113 port->full_duplex = 1;
1116 port->port_speed = EHEA_SPEED_1G;
1117 port->full_duplex = 1;
1120 port->port_speed = EHEA_SPEED_10G;
1121 port->full_duplex = 1;
1124 port->port_speed = 0;
1125 port->full_duplex = 0;
1129 pr_err("Failed sensing port speed\n");
1133 if (hret == H_AUTHORITY) {
1134 pr_info("Hypervisor denied setting port speed\n");
1138 pr_err("Failed setting port speed\n");
1141 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1142 netif_carrier_on(port->netdev);
1144 free_page((unsigned long)cb4);
1149 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1154 struct ehea_port *port;
1155 struct net_device *dev;
1157 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1158 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1159 port = ehea_get_port(adapter, portnum);
1163 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1166 netdev_err(dev, "unknown portnum %x\n", portnum);
1170 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1171 if (!netif_carrier_ok(dev)) {
1172 ret = ehea_sense_port_attr(port);
1174 netdev_err(dev, "failed resensing port attributes\n");
1178 netif_info(port, link, dev,
1179 "Logical port up: %dMbps %s Duplex\n",
1181 port->full_duplex == 1 ?
1184 netif_carrier_on(dev);
1185 netif_wake_queue(dev);
1188 if (netif_carrier_ok(dev)) {
1189 netif_info(port, link, dev,
1190 "Logical port down\n");
1191 netif_carrier_off(dev);
1192 netif_tx_disable(dev);
1195 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1196 port->phy_link = EHEA_PHY_LINK_UP;
1197 netif_info(port, link, dev,
1198 "Physical port up\n");
1199 if (prop_carrier_state)
1200 netif_carrier_on(dev);
1202 port->phy_link = EHEA_PHY_LINK_DOWN;
1203 netif_info(port, link, dev,
1204 "Physical port down\n");
1205 if (prop_carrier_state)
1206 netif_carrier_off(dev);
1209 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1211 "External switch port is primary port\n");
1214 "External switch port is backup port\n");
1217 case EHEA_EC_ADAPTER_MALFUNC:
1218 netdev_err(dev, "Adapter malfunction\n");
1220 case EHEA_EC_PORT_MALFUNC:
1221 netdev_info(dev, "Port malfunction\n");
1222 netif_carrier_off(dev);
1223 netif_tx_disable(dev);
1226 netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe);
1231 static void ehea_neq_tasklet(unsigned long data)
1233 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1234 struct ehea_eqe *eqe;
1237 eqe = ehea_poll_eq(adapter->neq);
1238 pr_debug("eqe=%p\n", eqe);
1241 pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
1242 ehea_parse_eqe(adapter, eqe->entry);
1243 eqe = ehea_poll_eq(adapter->neq);
1244 pr_debug("next eqe=%p\n", eqe);
1247 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1248 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1249 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1251 ehea_h_reset_events(adapter->handle,
1252 adapter->neq->fw_handle, event_mask);
1255 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1257 struct ehea_adapter *adapter = param;
1258 tasklet_hi_schedule(&adapter->neq_tasklet);
1263 static int ehea_fill_port_res(struct ehea_port_res *pr)
1266 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1268 ehea_init_fill_rq1(pr, pr->rq1_skba.len);
1270 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1272 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1277 static int ehea_reg_interrupts(struct net_device *dev)
1279 struct ehea_port *port = netdev_priv(dev);
1280 struct ehea_port_res *pr;
1284 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1287 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1288 ehea_qp_aff_irq_handler,
1289 IRQF_DISABLED, port->int_aff_name, port);
1291 netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1292 port->qp_eq->attr.ist1);
1296 netif_info(port, ifup, dev,
1297 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1298 port->qp_eq->attr.ist1);
1301 for (i = 0; i < port->num_def_qps; i++) {
1302 pr = &port->port_res[i];
1303 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1304 "%s-queue%d", dev->name, i);
1305 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1306 ehea_recv_irq_handler,
1307 IRQF_DISABLED, pr->int_send_name,
1310 netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1311 i, pr->eq->attr.ist1);
1314 netif_info(port, ifup, dev,
1315 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1316 pr->eq->attr.ist1, i);
1324 u32 ist = port->port_res[i].eq->attr.ist1;
1325 ibmebus_free_irq(ist, &port->port_res[i]);
1329 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1330 i = port->num_def_qps;
1336 static void ehea_free_interrupts(struct net_device *dev)
1338 struct ehea_port *port = netdev_priv(dev);
1339 struct ehea_port_res *pr;
1344 for (i = 0; i < port->num_def_qps; i++) {
1345 pr = &port->port_res[i];
1346 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1347 netif_info(port, intr, dev,
1348 "free send irq for res %d with handle 0x%X\n",
1349 i, pr->eq->attr.ist1);
1352 /* associated events */
1353 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1354 netif_info(port, intr, dev,
1355 "associated event interrupt for handle 0x%X freed\n",
1356 port->qp_eq->attr.ist1);
1359 static int ehea_configure_port(struct ehea_port *port)
1363 struct hcp_ehea_port_cb0 *cb0;
1366 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1370 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1371 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1372 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1373 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1374 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1375 PXLY_RC_VLAN_FILTER)
1376 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1378 for (i = 0; i < port->num_mcs; i++)
1380 cb0->default_qpn_arr[i] =
1381 port->port_res[i].qp->init_attr.qp_nr;
1383 cb0->default_qpn_arr[i] =
1384 port->port_res[0].qp->init_attr.qp_nr;
1386 if (netif_msg_ifup(port))
1387 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1389 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1390 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1392 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1393 port->logical_port_id,
1394 H_PORT_CB0, mask, cb0);
1396 if (hret != H_SUCCESS)
1402 free_page((unsigned long)cb0);
1407 static int ehea_gen_smrs(struct ehea_port_res *pr)
1410 struct ehea_adapter *adapter = pr->port->adapter;
1412 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1416 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1423 ehea_rem_mr(&pr->send_mr);
1425 pr_err("Generating SMRS failed\n");
1429 static int ehea_rem_smrs(struct ehea_port_res *pr)
1431 if ((ehea_rem_mr(&pr->send_mr)) ||
1432 (ehea_rem_mr(&pr->recv_mr)))
1438 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1440 int arr_size = sizeof(void *) * max_q_entries;
1442 q_skba->arr = vzalloc(arr_size);
1446 q_skba->len = max_q_entries;
1448 q_skba->os_skbs = 0;
1453 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1454 struct port_res_cfg *pr_cfg, int queue_token)
1456 struct ehea_adapter *adapter = port->adapter;
1457 enum ehea_eq_type eq_type = EHEA_EQ;
1458 struct ehea_qp_init_attr *init_attr = NULL;
1460 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1462 tx_bytes = pr->tx_bytes;
1463 tx_packets = pr->tx_packets;
1464 rx_bytes = pr->rx_bytes;
1465 rx_packets = pr->rx_packets;
1467 memset(pr, 0, sizeof(struct ehea_port_res));
1469 pr->tx_bytes = rx_bytes;
1470 pr->tx_packets = tx_packets;
1471 pr->rx_bytes = rx_bytes;
1472 pr->rx_packets = rx_packets;
1476 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1478 pr_err("create_eq failed (eq)\n");
1482 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1484 port->logical_port_id);
1486 pr_err("create_cq failed (cq_recv)\n");
1490 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1492 port->logical_port_id);
1494 pr_err("create_cq failed (cq_send)\n");
1498 if (netif_msg_ifup(port))
1499 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1500 pr->send_cq->attr.act_nr_of_cqes,
1501 pr->recv_cq->attr.act_nr_of_cqes);
1503 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1506 pr_err("no mem for ehea_qp_init_attr\n");
1510 init_attr->low_lat_rq1 = 1;
1511 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1512 init_attr->rq_count = 3;
1513 init_attr->qp_token = queue_token;
1514 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1515 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1516 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1517 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1518 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1519 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1520 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1521 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1522 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1523 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1524 init_attr->port_nr = port->logical_port_id;
1525 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1526 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1527 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1529 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1531 pr_err("create_qp failed\n");
1536 if (netif_msg_ifup(port))
1537 pr_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d\n",
1539 init_attr->act_nr_send_wqes,
1540 init_attr->act_nr_rwqes_rq1,
1541 init_attr->act_nr_rwqes_rq2,
1542 init_attr->act_nr_rwqes_rq3);
1544 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1546 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1547 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1548 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1549 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1553 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1554 if (ehea_gen_smrs(pr) != 0) {
1559 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1563 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1570 vfree(pr->sq_skba.arr);
1571 vfree(pr->rq1_skba.arr);
1572 vfree(pr->rq2_skba.arr);
1573 vfree(pr->rq3_skba.arr);
1574 ehea_destroy_qp(pr->qp);
1575 ehea_destroy_cq(pr->send_cq);
1576 ehea_destroy_cq(pr->recv_cq);
1577 ehea_destroy_eq(pr->eq);
1582 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1587 netif_napi_del(&pr->napi);
1589 ret = ehea_destroy_qp(pr->qp);
1592 ehea_destroy_cq(pr->send_cq);
1593 ehea_destroy_cq(pr->recv_cq);
1594 ehea_destroy_eq(pr->eq);
1596 for (i = 0; i < pr->rq1_skba.len; i++)
1597 if (pr->rq1_skba.arr[i])
1598 dev_kfree_skb(pr->rq1_skba.arr[i]);
1600 for (i = 0; i < pr->rq2_skba.len; i++)
1601 if (pr->rq2_skba.arr[i])
1602 dev_kfree_skb(pr->rq2_skba.arr[i]);
1604 for (i = 0; i < pr->rq3_skba.len; i++)
1605 if (pr->rq3_skba.arr[i])
1606 dev_kfree_skb(pr->rq3_skba.arr[i]);
1608 for (i = 0; i < pr->sq_skba.len; i++)
1609 if (pr->sq_skba.arr[i])
1610 dev_kfree_skb(pr->sq_skba.arr[i]);
1612 vfree(pr->rq1_skba.arr);
1613 vfree(pr->rq2_skba.arr);
1614 vfree(pr->rq3_skba.arr);
1615 vfree(pr->sq_skba.arr);
1616 ret = ehea_rem_smrs(pr);
1621 static void write_swqe2_immediate(struct sk_buff *skb, struct ehea_swqe *swqe,
1624 int skb_data_size = skb_headlen(skb);
1625 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1626 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1627 unsigned int immediate_len = SWQE2_MAX_IMM;
1629 swqe->descriptors = 0;
1631 if (skb_is_gso(skb)) {
1632 swqe->tx_control |= EHEA_SWQE_TSO;
1633 swqe->mss = skb_shinfo(skb)->gso_size;
1635 * For TSO packets we only copy the headers into the
1638 immediate_len = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1641 if (skb_is_gso(skb) || skb_data_size >= SWQE2_MAX_IMM) {
1642 skb_copy_from_linear_data(skb, imm_data, immediate_len);
1643 swqe->immediate_data_length = immediate_len;
1645 if (skb_data_size > immediate_len) {
1646 sg1entry->l_key = lkey;
1647 sg1entry->len = skb_data_size - immediate_len;
1649 ehea_map_vaddr(skb->data + immediate_len);
1650 swqe->descriptors++;
1653 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1654 swqe->immediate_data_length = skb_data_size;
1658 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1659 struct ehea_swqe *swqe, u32 lkey)
1661 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1663 int nfrags, sg1entry_contains_frag_data, i;
1665 nfrags = skb_shinfo(skb)->nr_frags;
1666 sg1entry = &swqe->u.immdata_desc.sg_entry;
1667 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1668 sg1entry_contains_frag_data = 0;
1670 write_swqe2_immediate(skb, swqe, lkey);
1672 /* write descriptors */
1674 if (swqe->descriptors == 0) {
1675 /* sg1entry not yet used */
1676 frag = &skb_shinfo(skb)->frags[0];
1678 /* copy sg1entry data */
1679 sg1entry->l_key = lkey;
1680 sg1entry->len = skb_frag_size(frag);
1682 ehea_map_vaddr(skb_frag_address(frag));
1683 swqe->descriptors++;
1684 sg1entry_contains_frag_data = 1;
1687 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1689 frag = &skb_shinfo(skb)->frags[i];
1690 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1692 sgentry->l_key = lkey;
1693 sgentry->len = skb_frag_size(frag);
1694 sgentry->vaddr = ehea_map_vaddr(skb_frag_address(frag));
1695 swqe->descriptors++;
1700 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1706 /* De/Register untagged packets */
1707 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1708 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1709 port->logical_port_id,
1710 reg_type, port->mac_addr, 0, hcallid);
1711 if (hret != H_SUCCESS) {
1712 pr_err("%sregistering bc address failed (tagged)\n",
1713 hcallid == H_REG_BCMC ? "" : "de");
1718 /* De/Register VLAN packets */
1719 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1720 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1721 port->logical_port_id,
1722 reg_type, port->mac_addr, 0, hcallid);
1723 if (hret != H_SUCCESS) {
1724 pr_err("%sregistering bc address failed (vlan)\n",
1725 hcallid == H_REG_BCMC ? "" : "de");
1732 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1734 struct ehea_port *port = netdev_priv(dev);
1735 struct sockaddr *mac_addr = sa;
1736 struct hcp_ehea_port_cb0 *cb0;
1740 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1741 ret = -EADDRNOTAVAIL;
1745 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1747 pr_err("no mem for cb0\n");
1752 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1754 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1756 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1757 port->logical_port_id, H_PORT_CB0,
1758 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1759 if (hret != H_SUCCESS) {
1764 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1766 /* Deregister old MAC in pHYP */
1767 if (port->state == EHEA_PORT_UP) {
1768 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1773 port->mac_addr = cb0->port_mac_addr << 16;
1775 /* Register new MAC in pHYP */
1776 if (port->state == EHEA_PORT_UP) {
1777 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1785 ehea_update_bcmc_registrations();
1787 free_page((unsigned long)cb0);
1792 static void ehea_promiscuous_error(u64 hret, int enable)
1794 if (hret == H_AUTHORITY)
1795 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1796 enable == 1 ? "en" : "dis");
1798 pr_err("failed %sabling promiscuous mode\n",
1799 enable == 1 ? "en" : "dis");
1802 static void ehea_promiscuous(struct net_device *dev, int enable)
1804 struct ehea_port *port = netdev_priv(dev);
1805 struct hcp_ehea_port_cb7 *cb7;
1808 if (enable == port->promisc)
1811 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
1813 pr_err("no mem for cb7\n");
1817 /* Modify Pxs_DUCQPN in CB7 */
1818 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1820 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1821 port->logical_port_id,
1822 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1824 ehea_promiscuous_error(hret, enable);
1828 port->promisc = enable;
1830 free_page((unsigned long)cb7);
1833 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1839 reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_UNTAGGED;
1840 if (mc_mac_addr == 0)
1841 reg_type |= EHEA_BCMC_SCOPE_ALL;
1843 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1844 port->logical_port_id,
1845 reg_type, mc_mac_addr, 0, hcallid);
1849 reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_VLANID_ALL;
1850 if (mc_mac_addr == 0)
1851 reg_type |= EHEA_BCMC_SCOPE_ALL;
1853 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1854 port->logical_port_id,
1855 reg_type, mc_mac_addr, 0, hcallid);
1860 static int ehea_drop_multicast_list(struct net_device *dev)
1862 struct ehea_port *port = netdev_priv(dev);
1863 struct ehea_mc_list *mc_entry = port->mc_list;
1864 struct list_head *pos;
1865 struct list_head *temp;
1869 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1870 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1872 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1875 pr_err("failed deregistering mcast MAC\n");
1885 static void ehea_allmulti(struct net_device *dev, int enable)
1887 struct ehea_port *port = netdev_priv(dev);
1890 if (!port->allmulti) {
1892 /* Enable ALLMULTI */
1893 ehea_drop_multicast_list(dev);
1894 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1899 "failed enabling IFF_ALLMULTI\n");
1903 /* Disable ALLMULTI */
1904 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1909 "failed disabling IFF_ALLMULTI\n");
1914 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1916 struct ehea_mc_list *ehea_mcl_entry;
1919 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1920 if (!ehea_mcl_entry)
1923 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1925 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1927 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1930 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1932 pr_err("failed registering mcast MAC\n");
1933 kfree(ehea_mcl_entry);
1937 static void ehea_set_multicast_list(struct net_device *dev)
1939 struct ehea_port *port = netdev_priv(dev);
1940 struct netdev_hw_addr *ha;
1943 ehea_promiscuous(dev, !!(dev->flags & IFF_PROMISC));
1945 if (dev->flags & IFF_ALLMULTI) {
1946 ehea_allmulti(dev, 1);
1949 ehea_allmulti(dev, 0);
1951 if (!netdev_mc_empty(dev)) {
1952 ret = ehea_drop_multicast_list(dev);
1954 /* Dropping the current multicast list failed.
1955 * Enabling ALL_MULTI is the best we can do.
1957 ehea_allmulti(dev, 1);
1960 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
1961 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
1962 port->adapter->max_mc_mac);
1966 netdev_for_each_mc_addr(ha, dev)
1967 ehea_add_multicast_entry(port, ha->addr);
1971 ehea_update_bcmc_registrations();
1974 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
1976 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
1982 static void xmit_common(struct sk_buff *skb, struct ehea_swqe *swqe)
1984 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT | EHEA_SWQE_CRC;
1986 if (skb->protocol != htons(ETH_P_IP))
1989 if (skb->ip_summed == CHECKSUM_PARTIAL)
1990 swqe->tx_control |= EHEA_SWQE_IP_CHECKSUM;
1992 swqe->ip_start = skb_network_offset(skb);
1993 swqe->ip_end = swqe->ip_start + ip_hdrlen(skb) - 1;
1995 switch (ip_hdr(skb)->protocol) {
1997 if (skb->ip_summed == CHECKSUM_PARTIAL)
1998 swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
2000 swqe->tcp_offset = swqe->ip_end + 1 +
2001 offsetof(struct udphdr, check);
2005 if (skb->ip_summed == CHECKSUM_PARTIAL)
2006 swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
2008 swqe->tcp_offset = swqe->ip_end + 1 +
2009 offsetof(struct tcphdr, check);
2014 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2015 struct ehea_swqe *swqe, u32 lkey)
2017 swqe->tx_control |= EHEA_SWQE_DESCRIPTORS_PRESENT;
2019 xmit_common(skb, swqe);
2021 write_swqe2_data(skb, dev, swqe, lkey);
2024 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2025 struct ehea_swqe *swqe)
2027 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2029 xmit_common(skb, swqe);
2032 skb_copy_from_linear_data(skb, imm_data, skb->len);
2034 skb_copy_bits(skb, 0, imm_data, skb->len);
2036 swqe->immediate_data_length = skb->len;
2040 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2042 struct ehea_port *port = netdev_priv(dev);
2043 struct ehea_swqe *swqe;
2046 struct ehea_port_res *pr;
2047 struct netdev_queue *txq;
2049 pr = &port->port_res[skb_get_queue_mapping(skb)];
2050 txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
2052 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2053 memset(swqe, 0, SWQE_HEADER_SIZE);
2054 atomic_dec(&pr->swqe_avail);
2056 if (vlan_tx_tag_present(skb)) {
2057 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2058 swqe->vlan_tag = vlan_tx_tag_get(skb);
2062 pr->tx_bytes += skb->len;
2064 if (skb->len <= SWQE3_MAX_IMM) {
2065 u32 sig_iv = port->sig_comp_iv;
2066 u32 swqe_num = pr->swqe_id_counter;
2067 ehea_xmit3(skb, dev, swqe);
2068 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2069 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2070 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2071 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2073 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2074 pr->swqe_ll_count = 0;
2076 pr->swqe_ll_count += 1;
2079 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2080 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2081 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2082 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2083 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2085 pr->sq_skba.index++;
2086 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2088 lkey = pr->send_mr.lkey;
2089 ehea_xmit2(skb, dev, swqe, lkey);
2090 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2092 pr->swqe_id_counter += 1;
2094 netif_info(port, tx_queued, dev,
2095 "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
2096 if (netif_msg_tx_queued(port))
2097 ehea_dump(swqe, 512, "swqe");
2099 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2100 netif_tx_stop_queue(txq);
2101 swqe->tx_control |= EHEA_SWQE_PURGE;
2104 ehea_post_swqe(pr->qp, swqe);
2106 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2107 pr->p_stats.queue_stopped++;
2108 netif_tx_stop_queue(txq);
2111 return NETDEV_TX_OK;
2114 static int ehea_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
2116 struct ehea_port *port = netdev_priv(dev);
2117 struct ehea_adapter *adapter = port->adapter;
2118 struct hcp_ehea_port_cb1 *cb1;
2123 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2125 pr_err("no mem for cb1\n");
2130 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2131 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2132 if (hret != H_SUCCESS) {
2133 pr_err("query_ehea_port failed\n");
2139 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2141 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2142 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2143 if (hret != H_SUCCESS) {
2144 pr_err("modify_ehea_port failed\n");
2148 free_page((unsigned long)cb1);
2152 static int ehea_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
2154 struct ehea_port *port = netdev_priv(dev);
2155 struct ehea_adapter *adapter = port->adapter;
2156 struct hcp_ehea_port_cb1 *cb1;
2161 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2163 pr_err("no mem for cb1\n");
2168 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2169 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2170 if (hret != H_SUCCESS) {
2171 pr_err("query_ehea_port failed\n");
2177 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2179 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2180 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2181 if (hret != H_SUCCESS) {
2182 pr_err("modify_ehea_port failed\n");
2186 free_page((unsigned long)cb1);
2190 static int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2196 struct hcp_modify_qp_cb0 *cb0;
2198 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2204 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2205 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2206 if (hret != H_SUCCESS) {
2207 pr_err("query_ehea_qp failed (1)\n");
2211 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2212 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2213 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2214 &dummy64, &dummy64, &dummy16, &dummy16);
2215 if (hret != H_SUCCESS) {
2216 pr_err("modify_ehea_qp failed (1)\n");
2220 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2221 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2222 if (hret != H_SUCCESS) {
2223 pr_err("query_ehea_qp failed (2)\n");
2227 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2228 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2229 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2230 &dummy64, &dummy64, &dummy16, &dummy16);
2231 if (hret != H_SUCCESS) {
2232 pr_err("modify_ehea_qp failed (2)\n");
2236 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2237 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2238 if (hret != H_SUCCESS) {
2239 pr_err("query_ehea_qp failed (3)\n");
2243 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2244 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2245 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2246 &dummy64, &dummy64, &dummy16, &dummy16);
2247 if (hret != H_SUCCESS) {
2248 pr_err("modify_ehea_qp failed (3)\n");
2252 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2253 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2254 if (hret != H_SUCCESS) {
2255 pr_err("query_ehea_qp failed (4)\n");
2261 free_page((unsigned long)cb0);
2265 static int ehea_port_res_setup(struct ehea_port *port, int def_qps)
2268 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2269 enum ehea_eq_type eq_type = EHEA_EQ;
2271 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2272 EHEA_MAX_ENTRIES_EQ, 1);
2275 pr_err("ehea_create_eq failed (qp_eq)\n");
2279 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2280 pr_cfg.max_entries_scq = sq_entries * 2;
2281 pr_cfg.max_entries_sq = sq_entries;
2282 pr_cfg.max_entries_rq1 = rq1_entries;
2283 pr_cfg.max_entries_rq2 = rq2_entries;
2284 pr_cfg.max_entries_rq3 = rq3_entries;
2286 pr_cfg_small_rx.max_entries_rcq = 1;
2287 pr_cfg_small_rx.max_entries_scq = sq_entries;
2288 pr_cfg_small_rx.max_entries_sq = sq_entries;
2289 pr_cfg_small_rx.max_entries_rq1 = 1;
2290 pr_cfg_small_rx.max_entries_rq2 = 1;
2291 pr_cfg_small_rx.max_entries_rq3 = 1;
2293 for (i = 0; i < def_qps; i++) {
2294 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2298 for (i = def_qps; i < def_qps; i++) {
2299 ret = ehea_init_port_res(port, &port->port_res[i],
2300 &pr_cfg_small_rx, i);
2309 ehea_clean_portres(port, &port->port_res[i]);
2312 ehea_destroy_eq(port->qp_eq);
2316 static int ehea_clean_all_portres(struct ehea_port *port)
2321 for (i = 0; i < port->num_def_qps; i++)
2322 ret |= ehea_clean_portres(port, &port->port_res[i]);
2324 ret |= ehea_destroy_eq(port->qp_eq);
2329 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2331 if (adapter->active_ports)
2334 ehea_rem_mr(&adapter->mr);
2337 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2339 if (adapter->active_ports)
2342 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2345 static int ehea_up(struct net_device *dev)
2348 struct ehea_port *port = netdev_priv(dev);
2350 if (port->state == EHEA_PORT_UP)
2353 ret = ehea_port_res_setup(port, port->num_def_qps);
2355 netdev_err(dev, "port_res_failed\n");
2359 /* Set default QP for this port */
2360 ret = ehea_configure_port(port);
2362 netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
2366 ret = ehea_reg_interrupts(dev);
2368 netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
2372 for (i = 0; i < port->num_def_qps; i++) {
2373 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2375 netdev_err(dev, "activate_qp failed\n");
2380 for (i = 0; i < port->num_def_qps; i++) {
2381 ret = ehea_fill_port_res(&port->port_res[i]);
2383 netdev_err(dev, "out_free_irqs\n");
2388 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2394 port->state = EHEA_PORT_UP;
2400 ehea_free_interrupts(dev);
2403 ehea_clean_all_portres(port);
2406 netdev_info(dev, "Failed starting. ret=%i\n", ret);
2408 ehea_update_bcmc_registrations();
2409 ehea_update_firmware_handles();
2414 static void port_napi_disable(struct ehea_port *port)
2418 for (i = 0; i < port->num_def_qps; i++)
2419 napi_disable(&port->port_res[i].napi);
2422 static void port_napi_enable(struct ehea_port *port)
2426 for (i = 0; i < port->num_def_qps; i++)
2427 napi_enable(&port->port_res[i].napi);
2430 static int ehea_open(struct net_device *dev)
2433 struct ehea_port *port = netdev_priv(dev);
2435 mutex_lock(&port->port_lock);
2437 netif_info(port, ifup, dev, "enabling port\n");
2441 port_napi_enable(port);
2442 netif_tx_start_all_queues(dev);
2445 mutex_unlock(&port->port_lock);
2446 schedule_delayed_work(&port->stats_work,
2447 round_jiffies_relative(msecs_to_jiffies(1000)));
2452 static int ehea_down(struct net_device *dev)
2455 struct ehea_port *port = netdev_priv(dev);
2457 if (port->state == EHEA_PORT_DOWN)
2460 ehea_drop_multicast_list(dev);
2461 ehea_allmulti(dev, 0);
2462 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2464 ehea_free_interrupts(dev);
2466 port->state = EHEA_PORT_DOWN;
2468 ehea_update_bcmc_registrations();
2470 ret = ehea_clean_all_portres(port);
2472 netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
2474 ehea_update_firmware_handles();
2479 static int ehea_stop(struct net_device *dev)
2482 struct ehea_port *port = netdev_priv(dev);
2484 netif_info(port, ifdown, dev, "disabling port\n");
2486 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2487 cancel_work_sync(&port->reset_task);
2488 cancel_delayed_work_sync(&port->stats_work);
2489 mutex_lock(&port->port_lock);
2490 netif_tx_stop_all_queues(dev);
2491 port_napi_disable(port);
2492 ret = ehea_down(dev);
2493 mutex_unlock(&port->port_lock);
2494 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2498 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2500 struct ehea_qp qp = *orig_qp;
2501 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2502 struct ehea_swqe *swqe;
2506 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2507 swqe = ehea_get_swqe(&qp, &wqe_index);
2508 swqe->tx_control |= EHEA_SWQE_PURGE;
2512 static void ehea_flush_sq(struct ehea_port *port)
2516 for (i = 0; i < port->num_def_qps; i++) {
2517 struct ehea_port_res *pr = &port->port_res[i];
2518 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2521 ret = wait_event_timeout(port->swqe_avail_wq,
2522 atomic_read(&pr->swqe_avail) >= swqe_max,
2523 msecs_to_jiffies(100));
2526 pr_err("WARNING: sq not flushed completely\n");
2532 static int ehea_stop_qps(struct net_device *dev)
2534 struct ehea_port *port = netdev_priv(dev);
2535 struct ehea_adapter *adapter = port->adapter;
2536 struct hcp_modify_qp_cb0 *cb0;
2544 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2550 for (i = 0; i < (port->num_def_qps); i++) {
2551 struct ehea_port_res *pr = &port->port_res[i];
2552 struct ehea_qp *qp = pr->qp;
2554 /* Purge send queue */
2557 /* Disable queue pair */
2558 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2559 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2561 if (hret != H_SUCCESS) {
2562 pr_err("query_ehea_qp failed (1)\n");
2566 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2567 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2569 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2570 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2572 &dummy64, &dummy16, &dummy16);
2573 if (hret != H_SUCCESS) {
2574 pr_err("modify_ehea_qp failed (1)\n");
2578 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2579 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2581 if (hret != H_SUCCESS) {
2582 pr_err("query_ehea_qp failed (2)\n");
2586 /* deregister shared memory regions */
2587 dret = ehea_rem_smrs(pr);
2589 pr_err("unreg shared memory region failed\n");
2596 free_page((unsigned long)cb0);
2601 static void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2603 struct ehea_qp qp = *orig_qp;
2604 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2605 struct ehea_rwqe *rwqe;
2606 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2607 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2608 struct sk_buff *skb;
2609 u32 lkey = pr->recv_mr.lkey;
2615 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2616 rwqe = ehea_get_next_rwqe(&qp, 2);
2617 rwqe->sg_list[0].l_key = lkey;
2618 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2619 skb = skba_rq2[index];
2621 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2624 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2625 rwqe = ehea_get_next_rwqe(&qp, 3);
2626 rwqe->sg_list[0].l_key = lkey;
2627 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2628 skb = skba_rq3[index];
2630 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2634 static int ehea_restart_qps(struct net_device *dev)
2636 struct ehea_port *port = netdev_priv(dev);
2637 struct ehea_adapter *adapter = port->adapter;
2641 struct hcp_modify_qp_cb0 *cb0;
2646 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2652 for (i = 0; i < (port->num_def_qps); i++) {
2653 struct ehea_port_res *pr = &port->port_res[i];
2654 struct ehea_qp *qp = pr->qp;
2656 ret = ehea_gen_smrs(pr);
2658 netdev_err(dev, "creation of shared memory regions failed\n");
2662 ehea_update_rqs(qp, pr);
2664 /* Enable queue pair */
2665 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2666 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2668 if (hret != H_SUCCESS) {
2669 netdev_err(dev, "query_ehea_qp failed (1)\n");
2673 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2674 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2676 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2677 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2679 &dummy64, &dummy16, &dummy16);
2680 if (hret != H_SUCCESS) {
2681 netdev_err(dev, "modify_ehea_qp failed (1)\n");
2685 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2686 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2688 if (hret != H_SUCCESS) {
2689 netdev_err(dev, "query_ehea_qp failed (2)\n");
2693 /* refill entire queue */
2694 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2695 ehea_refill_rq2(pr, 0);
2696 ehea_refill_rq3(pr, 0);
2699 free_page((unsigned long)cb0);
2704 static void ehea_reset_port(struct work_struct *work)
2707 struct ehea_port *port =
2708 container_of(work, struct ehea_port, reset_task);
2709 struct net_device *dev = port->netdev;
2711 mutex_lock(&dlpar_mem_lock);
2713 mutex_lock(&port->port_lock);
2714 netif_tx_disable(dev);
2716 port_napi_disable(port);
2724 ehea_set_multicast_list(dev);
2726 netif_info(port, timer, dev, "reset successful\n");
2728 port_napi_enable(port);
2730 netif_tx_wake_all_queues(dev);
2732 mutex_unlock(&port->port_lock);
2733 mutex_unlock(&dlpar_mem_lock);
2736 static void ehea_rereg_mrs(void)
2739 struct ehea_adapter *adapter;
2741 pr_info("LPAR memory changed - re-initializing driver\n");
2743 list_for_each_entry(adapter, &adapter_list, list)
2744 if (adapter->active_ports) {
2745 /* Shutdown all ports */
2746 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2747 struct ehea_port *port = adapter->port[i];
2748 struct net_device *dev;
2755 if (dev->flags & IFF_UP) {
2756 mutex_lock(&port->port_lock);
2757 netif_tx_disable(dev);
2758 ehea_flush_sq(port);
2759 ret = ehea_stop_qps(dev);
2761 mutex_unlock(&port->port_lock);
2764 port_napi_disable(port);
2765 mutex_unlock(&port->port_lock);
2767 reset_sq_restart_flag(port);
2770 /* Unregister old memory region */
2771 ret = ehea_rem_mr(&adapter->mr);
2773 pr_err("unregister MR failed - driver inoperable!\n");
2778 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2780 list_for_each_entry(adapter, &adapter_list, list)
2781 if (adapter->active_ports) {
2782 /* Register new memory region */
2783 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2785 pr_err("register MR failed - driver inoperable!\n");
2789 /* Restart all ports */
2790 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2791 struct ehea_port *port = adapter->port[i];
2794 struct net_device *dev = port->netdev;
2796 if (dev->flags & IFF_UP) {
2797 mutex_lock(&port->port_lock);
2798 ret = ehea_restart_qps(dev);
2801 port_napi_enable(port);
2802 netif_tx_wake_all_queues(dev);
2804 netdev_err(dev, "Unable to restart QPS\n");
2806 mutex_unlock(&port->port_lock);
2811 pr_info("re-initializing driver complete\n");
2816 static void ehea_tx_watchdog(struct net_device *dev)
2818 struct ehea_port *port = netdev_priv(dev);
2820 if (netif_carrier_ok(dev) &&
2821 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2822 ehea_schedule_port_reset(port);
2825 static int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2827 struct hcp_query_ehea *cb;
2831 cb = (void *)get_zeroed_page(GFP_KERNEL);
2837 hret = ehea_h_query_ehea(adapter->handle, cb);
2839 if (hret != H_SUCCESS) {
2844 adapter->max_mc_mac = cb->max_mc_mac - 1;
2848 free_page((unsigned long)cb);
2853 static int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
2855 struct hcp_ehea_port_cb4 *cb4;
2861 /* (Try to) enable *jumbo frames */
2862 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
2864 pr_err("no mem for cb4\n");
2868 hret = ehea_h_query_ehea_port(port->adapter->handle,
2869 port->logical_port_id,
2871 H_PORT_CB4_JUMBO, cb4);
2872 if (hret == H_SUCCESS) {
2873 if (cb4->jumbo_frame)
2876 cb4->jumbo_frame = 1;
2877 hret = ehea_h_modify_ehea_port(port->adapter->
2884 if (hret == H_SUCCESS)
2890 free_page((unsigned long)cb4);
2896 static ssize_t ehea_show_port_id(struct device *dev,
2897 struct device_attribute *attr, char *buf)
2899 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2900 return sprintf(buf, "%d", port->logical_port_id);
2903 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2906 static void logical_port_release(struct device *dev)
2908 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2909 of_node_put(port->ofdev.dev.of_node);
2912 static struct device *ehea_register_port(struct ehea_port *port,
2913 struct device_node *dn)
2917 port->ofdev.dev.of_node = of_node_get(dn);
2918 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
2919 port->ofdev.dev.bus = &ibmebus_bus_type;
2921 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
2922 port->ofdev.dev.release = logical_port_release;
2924 ret = of_device_register(&port->ofdev);
2926 pr_err("failed to register device. ret=%d\n", ret);
2930 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
2932 pr_err("failed to register attributes, ret=%d\n", ret);
2933 goto out_unreg_of_dev;
2936 return &port->ofdev.dev;
2939 of_device_unregister(&port->ofdev);
2944 static void ehea_unregister_port(struct ehea_port *port)
2946 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2947 of_device_unregister(&port->ofdev);
2950 static const struct net_device_ops ehea_netdev_ops = {
2951 .ndo_open = ehea_open,
2952 .ndo_stop = ehea_stop,
2953 .ndo_start_xmit = ehea_start_xmit,
2954 #ifdef CONFIG_NET_POLL_CONTROLLER
2955 .ndo_poll_controller = ehea_netpoll,
2957 .ndo_get_stats64 = ehea_get_stats64,
2958 .ndo_set_mac_address = ehea_set_mac_addr,
2959 .ndo_validate_addr = eth_validate_addr,
2960 .ndo_set_rx_mode = ehea_set_multicast_list,
2961 .ndo_change_mtu = ehea_change_mtu,
2962 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
2963 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
2964 .ndo_tx_timeout = ehea_tx_watchdog,
2967 static struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
2968 u32 logical_port_id,
2969 struct device_node *dn)
2972 struct net_device *dev;
2973 struct ehea_port *port;
2974 struct device *port_dev;
2977 /* allocate memory for the port structures */
2978 dev = alloc_etherdev_mq(sizeof(struct ehea_port), EHEA_MAX_PORT_RES);
2985 port = netdev_priv(dev);
2987 mutex_init(&port->port_lock);
2988 port->state = EHEA_PORT_DOWN;
2989 port->sig_comp_iv = sq_entries / 10;
2991 port->adapter = adapter;
2993 port->logical_port_id = logical_port_id;
2995 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
2997 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
2998 if (!port->mc_list) {
3000 goto out_free_ethdev;
3003 INIT_LIST_HEAD(&port->mc_list->list);
3005 ret = ehea_sense_port_attr(port);
3007 goto out_free_mc_list;
3009 netif_set_real_num_rx_queues(dev, port->num_def_qps);
3010 netif_set_real_num_tx_queues(dev, port->num_def_qps);
3012 port_dev = ehea_register_port(port, dn);
3014 goto out_free_mc_list;
3016 SET_NETDEV_DEV(dev, port_dev);
3018 /* initialize net_device structure */
3019 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3021 dev->netdev_ops = &ehea_netdev_ops;
3022 ehea_set_ethtool_ops(dev);
3024 dev->hw_features = NETIF_F_SG | NETIF_F_TSO |
3025 NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_CTAG_TX;
3026 dev->features = NETIF_F_SG | NETIF_F_TSO |
3027 NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
3028 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3029 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXCSUM;
3030 dev->vlan_features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HIGHDMA |
3032 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3034 INIT_WORK(&port->reset_task, ehea_reset_port);
3035 INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats);
3037 init_waitqueue_head(&port->swqe_avail_wq);
3038 init_waitqueue_head(&port->restart_wq);
3040 memset(&port->stats, 0, sizeof(struct net_device_stats));
3041 ret = register_netdev(dev);
3043 pr_err("register_netdev failed. ret=%d\n", ret);
3044 goto out_unreg_port;
3047 ret = ehea_get_jumboframe_status(port, &jumbo);
3049 netdev_err(dev, "failed determining jumbo frame status\n");
3051 netdev_info(dev, "Jumbo frames are %sabled\n",
3052 jumbo == 1 ? "en" : "dis");
3054 adapter->active_ports++;
3059 ehea_unregister_port(port);
3062 kfree(port->mc_list);
3068 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3069 logical_port_id, ret);
3073 static void ehea_shutdown_single_port(struct ehea_port *port)
3075 struct ehea_adapter *adapter = port->adapter;
3077 cancel_work_sync(&port->reset_task);
3078 cancel_delayed_work_sync(&port->stats_work);
3079 unregister_netdev(port->netdev);
3080 ehea_unregister_port(port);
3081 kfree(port->mc_list);
3082 free_netdev(port->netdev);
3083 adapter->active_ports--;
3086 static int ehea_setup_ports(struct ehea_adapter *adapter)
3088 struct device_node *lhea_dn;
3089 struct device_node *eth_dn = NULL;
3091 const u32 *dn_log_port_id;
3094 lhea_dn = adapter->ofdev->dev.of_node;
3095 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3097 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3099 if (!dn_log_port_id) {
3100 pr_err("bad device node: eth_dn name=%s\n",
3105 if (ehea_add_adapter_mr(adapter)) {
3106 pr_err("creating MR failed\n");
3107 of_node_put(eth_dn);
3111 adapter->port[i] = ehea_setup_single_port(adapter,
3114 if (adapter->port[i])
3115 netdev_info(adapter->port[i]->netdev,
3116 "logical port id #%d\n", *dn_log_port_id);
3118 ehea_remove_adapter_mr(adapter);
3125 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3126 u32 logical_port_id)
3128 struct device_node *lhea_dn;
3129 struct device_node *eth_dn = NULL;
3130 const u32 *dn_log_port_id;
3132 lhea_dn = adapter->ofdev->dev.of_node;
3133 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3135 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3138 if (*dn_log_port_id == logical_port_id)
3145 static ssize_t ehea_probe_port(struct device *dev,
3146 struct device_attribute *attr,
3147 const char *buf, size_t count)
3149 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3150 struct ehea_port *port;
3151 struct device_node *eth_dn = NULL;
3154 u32 logical_port_id;
3156 sscanf(buf, "%d", &logical_port_id);
3158 port = ehea_get_port(adapter, logical_port_id);
3161 netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
3166 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3169 pr_info("no logical port with id %d found\n", logical_port_id);
3173 if (ehea_add_adapter_mr(adapter)) {
3174 pr_err("creating MR failed\n");
3178 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3180 of_node_put(eth_dn);
3183 for (i = 0; i < EHEA_MAX_PORTS; i++)
3184 if (!adapter->port[i]) {
3185 adapter->port[i] = port;
3189 netdev_info(port->netdev, "added: (logical port id=%d)\n",
3192 ehea_remove_adapter_mr(adapter);
3196 return (ssize_t) count;
3199 static ssize_t ehea_remove_port(struct device *dev,
3200 struct device_attribute *attr,
3201 const char *buf, size_t count)
3203 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3204 struct ehea_port *port;
3206 u32 logical_port_id;
3208 sscanf(buf, "%d", &logical_port_id);
3210 port = ehea_get_port(adapter, logical_port_id);
3213 netdev_info(port->netdev, "removed: (logical port id=%d)\n",
3216 ehea_shutdown_single_port(port);
3218 for (i = 0; i < EHEA_MAX_PORTS; i++)
3219 if (adapter->port[i] == port) {
3220 adapter->port[i] = NULL;
3224 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3229 ehea_remove_adapter_mr(adapter);
3231 return (ssize_t) count;
3234 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3235 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3237 static int ehea_create_device_sysfs(struct platform_device *dev)
3239 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3243 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3248 static void ehea_remove_device_sysfs(struct platform_device *dev)
3250 device_remove_file(&dev->dev, &dev_attr_probe_port);
3251 device_remove_file(&dev->dev, &dev_attr_remove_port);
3254 static int ehea_probe_adapter(struct platform_device *dev,
3255 const struct of_device_id *id)
3257 struct ehea_adapter *adapter;
3258 const u64 *adapter_handle;
3262 if (!dev || !dev->dev.of_node) {
3263 pr_err("Invalid ibmebus device probed\n");
3267 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3270 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3274 list_add(&adapter->list, &adapter_list);
3276 adapter->ofdev = dev;
3278 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
3281 adapter->handle = *adapter_handle;
3283 if (!adapter->handle) {
3284 dev_err(&dev->dev, "failed getting handle for adapter"
3285 " '%s'\n", dev->dev.of_node->full_name);
3290 adapter->pd = EHEA_PD_ID;
3292 dev_set_drvdata(&dev->dev, adapter);
3295 /* initialize adapter and ports */
3296 /* get adapter properties */
3297 ret = ehea_sense_adapter_attr(adapter);
3299 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3303 adapter->neq = ehea_create_eq(adapter,
3304 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3305 if (!adapter->neq) {
3307 dev_err(&dev->dev, "NEQ creation failed\n");
3311 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3312 (unsigned long)adapter);
3314 ret = ehea_create_device_sysfs(dev);
3318 ret = ehea_setup_ports(adapter);
3320 dev_err(&dev->dev, "setup_ports failed\n");
3321 goto out_rem_dev_sysfs;
3324 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3325 ehea_interrupt_neq, IRQF_DISABLED,
3326 "ehea_neq", adapter);
3328 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3329 goto out_shutdown_ports;
3332 /* Handle any events that might be pending. */
3333 tasklet_hi_schedule(&adapter->neq_tasklet);
3339 for (i = 0; i < EHEA_MAX_PORTS; i++)
3340 if (adapter->port[i]) {
3341 ehea_shutdown_single_port(adapter->port[i]);
3342 adapter->port[i] = NULL;
3346 ehea_remove_device_sysfs(dev);
3349 ehea_destroy_eq(adapter->neq);
3352 list_del(&adapter->list);
3356 ehea_update_firmware_handles();
3361 static int ehea_remove(struct platform_device *dev)
3363 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
3366 for (i = 0; i < EHEA_MAX_PORTS; i++)
3367 if (adapter->port[i]) {
3368 ehea_shutdown_single_port(adapter->port[i]);
3369 adapter->port[i] = NULL;
3372 ehea_remove_device_sysfs(dev);
3374 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3375 tasklet_kill(&adapter->neq_tasklet);
3377 ehea_destroy_eq(adapter->neq);
3378 ehea_remove_adapter_mr(adapter);
3379 list_del(&adapter->list);
3382 ehea_update_firmware_handles();
3387 static void ehea_crash_handler(void)
3391 if (ehea_fw_handles.arr)
3392 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3393 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3394 ehea_fw_handles.arr[i].fwh,
3397 if (ehea_bcmc_regs.arr)
3398 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3399 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3400 ehea_bcmc_regs.arr[i].port_id,
3401 ehea_bcmc_regs.arr[i].reg_type,
3402 ehea_bcmc_regs.arr[i].macaddr,
3406 static int ehea_mem_notifier(struct notifier_block *nb,
3407 unsigned long action, void *data)
3409 int ret = NOTIFY_BAD;
3410 struct memory_notify *arg = data;
3412 mutex_lock(&dlpar_mem_lock);
3415 case MEM_CANCEL_OFFLINE:
3416 pr_info("memory offlining canceled");
3417 /* Readd canceled memory block */
3419 pr_info("memory is going online");
3420 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3421 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3425 case MEM_GOING_OFFLINE:
3426 pr_info("memory is going offline");
3427 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3428 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3436 ehea_update_firmware_handles();
3440 mutex_unlock(&dlpar_mem_lock);
3444 static struct notifier_block ehea_mem_nb = {
3445 .notifier_call = ehea_mem_notifier,
3448 static int ehea_reboot_notifier(struct notifier_block *nb,
3449 unsigned long action, void *unused)
3451 if (action == SYS_RESTART) {
3452 pr_info("Reboot: freeing all eHEA resources\n");
3453 ibmebus_unregister_driver(&ehea_driver);
3458 static struct notifier_block ehea_reboot_nb = {
3459 .notifier_call = ehea_reboot_notifier,
3462 static int check_module_parm(void)
3466 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3467 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3468 pr_info("Bad parameter: rq1_entries\n");
3471 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3472 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3473 pr_info("Bad parameter: rq2_entries\n");
3476 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3477 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3478 pr_info("Bad parameter: rq3_entries\n");
3481 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3482 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3483 pr_info("Bad parameter: sq_entries\n");
3490 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3493 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3496 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3497 ehea_show_capabilities, NULL);
3499 static int __init ehea_module_init(void)
3503 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
3505 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3506 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3508 mutex_init(&ehea_fw_handles.lock);
3509 spin_lock_init(&ehea_bcmc_regs.lock);
3511 ret = check_module_parm();
3515 ret = ehea_create_busmap();
3519 ret = register_reboot_notifier(&ehea_reboot_nb);
3521 pr_info("failed registering reboot notifier\n");
3523 ret = register_memory_notifier(&ehea_mem_nb);
3525 pr_info("failed registering memory remove notifier\n");
3527 ret = crash_shutdown_register(ehea_crash_handler);
3529 pr_info("failed registering crash handler\n");
3531 ret = ibmebus_register_driver(&ehea_driver);
3533 pr_err("failed registering eHEA device driver on ebus\n");
3537 ret = driver_create_file(&ehea_driver.driver,
3538 &driver_attr_capabilities);
3540 pr_err("failed to register capabilities attribute, ret=%d\n",
3548 ibmebus_unregister_driver(&ehea_driver);
3550 unregister_memory_notifier(&ehea_mem_nb);
3551 unregister_reboot_notifier(&ehea_reboot_nb);
3552 crash_shutdown_unregister(ehea_crash_handler);
3557 static void __exit ehea_module_exit(void)
3561 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3562 ibmebus_unregister_driver(&ehea_driver);
3563 unregister_reboot_notifier(&ehea_reboot_nb);
3564 ret = crash_shutdown_unregister(ehea_crash_handler);
3566 pr_info("failed unregistering crash handler\n");
3567 unregister_memory_notifier(&ehea_mem_nb);
3568 kfree(ehea_fw_handles.arr);
3569 kfree(ehea_bcmc_regs.arr);
3570 ehea_destroy_busmap();
3573 module_init(ehea_module_init);
3574 module_exit(ehea_module_exit);