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
31 #include <linux/device.h>
34 #include <linux/tcp.h>
35 #include <linux/udp.h>
37 #include <linux/list.h>
38 #include <linux/slab.h>
39 #include <linux/if_ether.h>
40 #include <linux/notifier.h>
41 #include <linux/reboot.h>
42 #include <linux/memory.h>
43 #include <asm/kexec.h>
44 #include <linux/mutex.h>
45 #include <linux/prefetch.h>
51 #include "ehea_phyp.h"
54 MODULE_LICENSE("GPL");
55 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
56 MODULE_DESCRIPTION("IBM eServer HEA Driver");
57 MODULE_VERSION(DRV_VERSION);
60 static int msg_level = -1;
61 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
62 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
63 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
64 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
65 static int use_mcs = 1;
66 static int prop_carrier_state;
68 module_param(msg_level, int, 0);
69 module_param(rq1_entries, int, 0);
70 module_param(rq2_entries, int, 0);
71 module_param(rq3_entries, int, 0);
72 module_param(sq_entries, int, 0);
73 module_param(prop_carrier_state, int, 0);
74 module_param(use_mcs, int, 0);
76 MODULE_PARM_DESC(msg_level, "msg_level");
77 MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
78 "port to stack. 1:yes, 0:no. Default = 0 ");
79 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
80 "[2^x - 1], x = [7..14]. Default = "
81 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
82 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
83 "[2^x - 1], x = [7..14]. Default = "
84 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
85 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
86 "[2^x - 1], x = [7..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
88 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
89 "[2^x - 1], x = [7..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
91 MODULE_PARM_DESC(use_mcs, " Multiple receive queues, 1: enable, 0: disable, "
94 static int port_name_cnt;
95 static LIST_HEAD(adapter_list);
96 static unsigned long ehea_driver_flags;
97 static DEFINE_MUTEX(dlpar_mem_lock);
98 static struct ehea_fw_handle_array ehea_fw_handles;
99 static struct ehea_bcmc_reg_array ehea_bcmc_regs;
102 static int ehea_probe_adapter(struct platform_device *dev);
104 static int ehea_remove(struct platform_device *dev);
106 static const struct of_device_id ehea_module_device_table[] = {
109 .compatible = "IBM,lhea",
113 .compatible = "IBM,lhea-ethernet",
117 MODULE_DEVICE_TABLE(of, ehea_module_device_table);
119 static const struct of_device_id ehea_device_table[] = {
122 .compatible = "IBM,lhea",
127 static struct platform_driver ehea_driver = {
130 .owner = THIS_MODULE,
131 .of_match_table = ehea_device_table,
133 .probe = ehea_probe_adapter,
134 .remove = ehea_remove,
137 void ehea_dump(void *adr, int len, char *msg)
140 unsigned char *deb = adr;
141 for (x = 0; x < len; x += 16) {
142 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
143 msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
148 static void ehea_schedule_port_reset(struct ehea_port *port)
150 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
151 schedule_work(&port->reset_task);
154 static void ehea_update_firmware_handles(void)
156 struct ehea_fw_handle_entry *arr = NULL;
157 struct ehea_adapter *adapter;
158 int num_adapters = 0;
162 int num_fw_handles, k, l;
164 /* Determine number of handles */
165 mutex_lock(&ehea_fw_handles.lock);
167 list_for_each_entry(adapter, &adapter_list, list) {
170 for (k = 0; k < EHEA_MAX_PORTS; k++) {
171 struct ehea_port *port = adapter->port[k];
173 if (!port || (port->state != EHEA_PORT_UP))
177 num_portres += port->num_def_qps;
181 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
182 num_ports * EHEA_NUM_PORT_FW_HANDLES +
183 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
185 if (num_fw_handles) {
186 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
188 goto out; /* Keep the existing array */
192 list_for_each_entry(adapter, &adapter_list, list) {
193 if (num_adapters == 0)
196 for (k = 0; k < EHEA_MAX_PORTS; k++) {
197 struct ehea_port *port = adapter->port[k];
199 if (!port || (port->state != EHEA_PORT_UP) ||
203 for (l = 0; l < port->num_def_qps; l++) {
204 struct ehea_port_res *pr = &port->port_res[l];
206 arr[i].adh = adapter->handle;
207 arr[i++].fwh = pr->qp->fw_handle;
208 arr[i].adh = adapter->handle;
209 arr[i++].fwh = pr->send_cq->fw_handle;
210 arr[i].adh = adapter->handle;
211 arr[i++].fwh = pr->recv_cq->fw_handle;
212 arr[i].adh = adapter->handle;
213 arr[i++].fwh = pr->eq->fw_handle;
214 arr[i].adh = adapter->handle;
215 arr[i++].fwh = pr->send_mr.handle;
216 arr[i].adh = adapter->handle;
217 arr[i++].fwh = pr->recv_mr.handle;
219 arr[i].adh = adapter->handle;
220 arr[i++].fwh = port->qp_eq->fw_handle;
224 arr[i].adh = adapter->handle;
225 arr[i++].fwh = adapter->neq->fw_handle;
227 if (adapter->mr.handle) {
228 arr[i].adh = adapter->handle;
229 arr[i++].fwh = adapter->mr.handle;
235 kfree(ehea_fw_handles.arr);
236 ehea_fw_handles.arr = arr;
237 ehea_fw_handles.num_entries = i;
239 mutex_unlock(&ehea_fw_handles.lock);
242 static void ehea_update_bcmc_registrations(void)
245 struct ehea_bcmc_reg_entry *arr = NULL;
246 struct ehea_adapter *adapter;
247 struct ehea_mc_list *mc_entry;
248 int num_registrations = 0;
252 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
254 /* Determine number of registrations */
255 list_for_each_entry(adapter, &adapter_list, list)
256 for (k = 0; k < EHEA_MAX_PORTS; k++) {
257 struct ehea_port *port = adapter->port[k];
259 if (!port || (port->state != EHEA_PORT_UP))
262 num_registrations += 2; /* Broadcast registrations */
264 list_for_each_entry(mc_entry, &port->mc_list->list,list)
265 num_registrations += 2;
268 if (num_registrations) {
269 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
271 goto out; /* Keep the existing array */
275 list_for_each_entry(adapter, &adapter_list, list) {
276 for (k = 0; k < EHEA_MAX_PORTS; k++) {
277 struct ehea_port *port = adapter->port[k];
279 if (!port || (port->state != EHEA_PORT_UP))
282 if (num_registrations == 0)
285 arr[i].adh = adapter->handle;
286 arr[i].port_id = port->logical_port_id;
287 arr[i].reg_type = EHEA_BCMC_BROADCAST |
289 arr[i++].macaddr = port->mac_addr;
291 arr[i].adh = adapter->handle;
292 arr[i].port_id = port->logical_port_id;
293 arr[i].reg_type = EHEA_BCMC_BROADCAST |
294 EHEA_BCMC_VLANID_ALL;
295 arr[i++].macaddr = port->mac_addr;
296 num_registrations -= 2;
298 list_for_each_entry(mc_entry,
299 &port->mc_list->list, list) {
300 if (num_registrations == 0)
303 arr[i].adh = adapter->handle;
304 arr[i].port_id = port->logical_port_id;
305 arr[i].reg_type = EHEA_BCMC_MULTICAST |
307 if (mc_entry->macaddr == 0)
308 arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL;
309 arr[i++].macaddr = mc_entry->macaddr;
311 arr[i].adh = adapter->handle;
312 arr[i].port_id = port->logical_port_id;
313 arr[i].reg_type = EHEA_BCMC_MULTICAST |
314 EHEA_BCMC_VLANID_ALL;
315 if (mc_entry->macaddr == 0)
316 arr[i].reg_type |= EHEA_BCMC_SCOPE_ALL;
317 arr[i++].macaddr = mc_entry->macaddr;
318 num_registrations -= 2;
324 kfree(ehea_bcmc_regs.arr);
325 ehea_bcmc_regs.arr = arr;
326 ehea_bcmc_regs.num_entries = i;
328 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
331 static void ehea_get_stats64(struct net_device *dev,
332 struct rtnl_link_stats64 *stats)
334 struct ehea_port *port = netdev_priv(dev);
335 u64 rx_packets = 0, tx_packets = 0, rx_bytes = 0, tx_bytes = 0;
338 for (i = 0; i < port->num_def_qps; i++) {
339 rx_packets += port->port_res[i].rx_packets;
340 rx_bytes += port->port_res[i].rx_bytes;
343 for (i = 0; i < port->num_def_qps; i++) {
344 tx_packets += port->port_res[i].tx_packets;
345 tx_bytes += port->port_res[i].tx_bytes;
348 stats->tx_packets = tx_packets;
349 stats->rx_bytes = rx_bytes;
350 stats->tx_bytes = tx_bytes;
351 stats->rx_packets = rx_packets;
353 stats->multicast = port->stats.multicast;
354 stats->rx_errors = port->stats.rx_errors;
357 static void ehea_update_stats(struct work_struct *work)
359 struct ehea_port *port =
360 container_of(work, struct ehea_port, stats_work.work);
361 struct net_device *dev = port->netdev;
362 struct rtnl_link_stats64 *stats = &port->stats;
363 struct hcp_ehea_port_cb2 *cb2;
366 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
368 netdev_err(dev, "No mem for cb2. Some interface statistics were not updated\n");
372 hret = ehea_h_query_ehea_port(port->adapter->handle,
373 port->logical_port_id,
374 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
375 if (hret != H_SUCCESS) {
376 netdev_err(dev, "query_ehea_port failed\n");
380 if (netif_msg_hw(port))
381 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
383 stats->multicast = cb2->rxmcp;
384 stats->rx_errors = cb2->rxuerr;
387 free_page((unsigned long)cb2);
389 schedule_delayed_work(&port->stats_work,
390 round_jiffies_relative(msecs_to_jiffies(1000)));
393 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
395 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
396 struct net_device *dev = pr->port->netdev;
397 int max_index_mask = pr->rq1_skba.len - 1;
398 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
402 pr->rq1_skba.os_skbs = 0;
404 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
406 pr->rq1_skba.index = index;
407 pr->rq1_skba.os_skbs = fill_wqes;
411 for (i = 0; i < fill_wqes; i++) {
412 if (!skb_arr_rq1[index]) {
413 skb_arr_rq1[index] = netdev_alloc_skb(dev,
415 if (!skb_arr_rq1[index]) {
416 pr->rq1_skba.os_skbs = fill_wqes - i;
421 index &= max_index_mask;
429 ehea_update_rq1a(pr->qp, adder);
432 static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
434 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
435 struct net_device *dev = pr->port->netdev;
438 if (nr_rq1a > pr->rq1_skba.len) {
439 netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
443 for (i = 0; i < nr_rq1a; i++) {
444 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
449 ehea_update_rq1a(pr->qp, i - 1);
452 static int ehea_refill_rq_def(struct ehea_port_res *pr,
453 struct ehea_q_skb_arr *q_skba, int rq_nr,
454 int num_wqes, int wqe_type, int packet_size)
456 struct net_device *dev = pr->port->netdev;
457 struct ehea_qp *qp = pr->qp;
458 struct sk_buff **skb_arr = q_skba->arr;
459 struct ehea_rwqe *rwqe;
460 int i, index, max_index_mask, fill_wqes;
464 fill_wqes = q_skba->os_skbs + num_wqes;
467 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
468 q_skba->os_skbs = fill_wqes;
472 index = q_skba->index;
473 max_index_mask = q_skba->len - 1;
474 for (i = 0; i < fill_wqes; i++) {
478 skb = netdev_alloc_skb_ip_align(dev, packet_size);
480 q_skba->os_skbs = fill_wqes - i;
481 if (q_skba->os_skbs == q_skba->len - 2) {
482 netdev_info(pr->port->netdev,
483 "rq%i ran dry - no mem for skb\n",
490 skb_arr[index] = skb;
491 tmp_addr = ehea_map_vaddr(skb->data);
492 if (tmp_addr == -1) {
493 dev_consume_skb_any(skb);
494 q_skba->os_skbs = fill_wqes - i;
499 rwqe = ehea_get_next_rwqe(qp, rq_nr);
500 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
501 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
502 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
503 rwqe->sg_list[0].vaddr = tmp_addr;
504 rwqe->sg_list[0].len = packet_size;
505 rwqe->data_segments = 1;
508 index &= max_index_mask;
512 q_skba->index = index;
519 ehea_update_rq2a(pr->qp, adder);
521 ehea_update_rq3a(pr->qp, adder);
527 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
529 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
530 nr_of_wqes, EHEA_RWQE2_TYPE,
535 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
537 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
538 nr_of_wqes, EHEA_RWQE3_TYPE,
539 EHEA_MAX_PACKET_SIZE);
542 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
544 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
545 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
547 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
548 (cqe->header_length == 0))
553 static inline void ehea_fill_skb(struct net_device *dev,
554 struct sk_buff *skb, struct ehea_cqe *cqe,
555 struct ehea_port_res *pr)
557 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
559 skb_put(skb, length);
560 skb->protocol = eth_type_trans(skb, dev);
562 /* The packet was not an IPV4 packet so a complemented checksum was
563 calculated. The value is found in the Internet Checksum field. */
564 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
565 skb->ip_summed = CHECKSUM_COMPLETE;
566 skb->csum = csum_unfold(~cqe->inet_checksum_value);
568 skb->ip_summed = CHECKSUM_UNNECESSARY;
570 skb_record_rx_queue(skb, pr - &pr->port->port_res[0]);
573 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
575 struct ehea_cqe *cqe)
577 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
588 prefetchw(pref + EHEA_CACHE_LINE);
590 pref = (skb_array[x]->data);
592 prefetch(pref + EHEA_CACHE_LINE);
593 prefetch(pref + EHEA_CACHE_LINE * 2);
594 prefetch(pref + EHEA_CACHE_LINE * 3);
597 skb = skb_array[skb_index];
598 skb_array[skb_index] = NULL;
602 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
603 int arr_len, int wqe_index)
615 prefetchw(pref + EHEA_CACHE_LINE);
617 pref = (skb_array[x]->data);
619 prefetchw(pref + EHEA_CACHE_LINE);
622 skb = skb_array[wqe_index];
623 skb_array[wqe_index] = NULL;
627 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
628 struct ehea_cqe *cqe, int *processed_rq2,
633 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
634 pr->p_stats.err_tcp_cksum++;
635 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
636 pr->p_stats.err_ip_cksum++;
637 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
638 pr->p_stats.err_frame_crc++;
642 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
644 } else if (rq == 3) {
646 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
650 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
651 if (netif_msg_rx_err(pr->port)) {
652 pr_err("Critical receive error for QP %d. Resetting port.\n",
653 pr->qp->init_attr.qp_nr);
654 ehea_dump(cqe, sizeof(*cqe), "CQE");
656 ehea_schedule_port_reset(pr->port);
663 static int ehea_proc_rwqes(struct net_device *dev,
664 struct ehea_port_res *pr,
667 struct ehea_port *port = pr->port;
668 struct ehea_qp *qp = pr->qp;
669 struct ehea_cqe *cqe;
671 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
672 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
673 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
674 int skb_arr_rq1_len = pr->rq1_skba.len;
675 int skb_arr_rq2_len = pr->rq2_skba.len;
676 int skb_arr_rq3_len = pr->rq3_skba.len;
677 int processed, processed_rq1, processed_rq2, processed_rq3;
678 u64 processed_bytes = 0;
679 int wqe_index, last_wqe_index, rq, port_reset;
681 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
684 cqe = ehea_poll_rq1(qp, &wqe_index);
685 while ((processed < budget) && cqe) {
689 if (netif_msg_rx_status(port))
690 ehea_dump(cqe, sizeof(*cqe), "CQE");
692 last_wqe_index = wqe_index;
694 if (!ehea_check_cqe(cqe, &rq)) {
697 skb = get_skb_by_index_ll(skb_arr_rq1,
700 if (unlikely(!skb)) {
701 netif_info(port, rx_err, dev,
702 "LL rq1: skb=NULL\n");
704 skb = netdev_alloc_skb(dev,
709 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
710 cqe->num_bytes_transfered - 4);
711 ehea_fill_skb(dev, skb, cqe, pr);
712 } else if (rq == 2) {
714 skb = get_skb_by_index(skb_arr_rq2,
715 skb_arr_rq2_len, cqe);
716 if (unlikely(!skb)) {
717 netif_err(port, rx_err, dev,
721 ehea_fill_skb(dev, skb, cqe, pr);
725 skb = get_skb_by_index(skb_arr_rq3,
726 skb_arr_rq3_len, cqe);
727 if (unlikely(!skb)) {
728 netif_err(port, rx_err, dev,
732 ehea_fill_skb(dev, skb, cqe, pr);
736 processed_bytes += skb->len;
738 if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
739 __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q),
742 napi_gro_receive(&pr->napi, skb);
744 pr->p_stats.poll_receive_errors++;
745 port_reset = ehea_treat_poll_error(pr, rq, cqe,
751 cqe = ehea_poll_rq1(qp, &wqe_index);
754 pr->rx_packets += processed;
755 pr->rx_bytes += processed_bytes;
757 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
758 ehea_refill_rq2(pr, processed_rq2);
759 ehea_refill_rq3(pr, processed_rq3);
764 #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
766 static void reset_sq_restart_flag(struct ehea_port *port)
770 for (i = 0; i < port->num_def_qps; i++) {
771 struct ehea_port_res *pr = &port->port_res[i];
772 pr->sq_restart_flag = 0;
774 wake_up(&port->restart_wq);
777 static void check_sqs(struct ehea_port *port)
779 struct ehea_swqe *swqe;
783 for (i = 0; i < port->num_def_qps; i++) {
784 struct ehea_port_res *pr = &port->port_res[i];
787 swqe = ehea_get_swqe(pr->qp, &swqe_index);
788 memset(swqe, 0, SWQE_HEADER_SIZE);
789 atomic_dec(&pr->swqe_avail);
791 swqe->tx_control |= EHEA_SWQE_PURGE;
792 swqe->wr_id = SWQE_RESTART_CHECK;
793 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
794 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
795 swqe->immediate_data_length = 80;
797 ehea_post_swqe(pr->qp, swqe);
799 ret = wait_event_timeout(port->restart_wq,
800 pr->sq_restart_flag == 0,
801 msecs_to_jiffies(100));
804 pr_err("HW/SW queues out of sync\n");
805 ehea_schedule_port_reset(pr->port);
812 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
815 struct ehea_cq *send_cq = pr->send_cq;
816 struct ehea_cqe *cqe;
817 int quota = my_quota;
821 struct netdev_queue *txq = netdev_get_tx_queue(pr->port->netdev,
822 pr - &pr->port->port_res[0]);
824 cqe = ehea_poll_cq(send_cq);
825 while (cqe && (quota > 0)) {
826 ehea_inc_cq(send_cq);
831 if (cqe->wr_id == SWQE_RESTART_CHECK) {
832 pr->sq_restart_flag = 1;
837 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
838 pr_err("Bad send completion status=0x%04X\n",
841 if (netif_msg_tx_err(pr->port))
842 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
844 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
845 pr_err("Resetting port\n");
846 ehea_schedule_port_reset(pr->port);
851 if (netif_msg_tx_done(pr->port))
852 ehea_dump(cqe, sizeof(*cqe), "CQE");
854 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
855 == EHEA_SWQE2_TYPE)) {
857 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
858 skb = pr->sq_skba.arr[index];
859 dev_consume_skb_any(skb);
860 pr->sq_skba.arr[index] = NULL;
863 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
866 cqe = ehea_poll_cq(send_cq);
869 ehea_update_feca(send_cq, cqe_counter);
870 atomic_add(swqe_av, &pr->swqe_avail);
872 if (unlikely(netif_tx_queue_stopped(txq) &&
873 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))) {
874 __netif_tx_lock(txq, smp_processor_id());
875 if (netif_tx_queue_stopped(txq) &&
876 (atomic_read(&pr->swqe_avail) >= pr->swqe_refill_th))
877 netif_tx_wake_queue(txq);
878 __netif_tx_unlock(txq);
881 wake_up(&pr->port->swqe_avail_wq);
886 #define EHEA_POLL_MAX_CQES 65535
888 static int ehea_poll(struct napi_struct *napi, int budget)
890 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
892 struct net_device *dev = pr->port->netdev;
893 struct ehea_cqe *cqe;
894 struct ehea_cqe *cqe_skb = NULL;
898 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
899 rx += ehea_proc_rwqes(dev, pr, budget - rx);
901 while (rx != budget) {
903 ehea_reset_cq_ep(pr->recv_cq);
904 ehea_reset_cq_ep(pr->send_cq);
905 ehea_reset_cq_n1(pr->recv_cq);
906 ehea_reset_cq_n1(pr->send_cq);
908 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
909 cqe_skb = ehea_poll_cq(pr->send_cq);
911 if (!cqe && !cqe_skb)
914 if (!napi_reschedule(napi))
917 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
918 rx += ehea_proc_rwqes(dev, pr, budget - rx);
924 #ifdef CONFIG_NET_POLL_CONTROLLER
925 static void ehea_netpoll(struct net_device *dev)
927 struct ehea_port *port = netdev_priv(dev);
930 for (i = 0; i < port->num_def_qps; i++)
931 napi_schedule(&port->port_res[i].napi);
935 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
937 struct ehea_port_res *pr = param;
939 napi_schedule(&pr->napi);
944 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
946 struct ehea_port *port = param;
947 struct ehea_eqe *eqe;
950 u64 resource_type, aer, aerr;
953 eqe = ehea_poll_eq(port->qp_eq);
956 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
957 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
958 eqe->entry, qp_token);
960 qp = port->port_res[qp_token].qp;
962 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
965 if (resource_type == EHEA_AER_RESTYPE_QP) {
966 if ((aer & EHEA_AER_RESET_MASK) ||
967 (aerr & EHEA_AERR_RESET_MASK))
970 reset_port = 1; /* Reset in case of CQ or EQ error */
972 eqe = ehea_poll_eq(port->qp_eq);
976 pr_err("Resetting port\n");
977 ehea_schedule_port_reset(port);
983 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
988 for (i = 0; i < EHEA_MAX_PORTS; i++)
989 if (adapter->port[i])
990 if (adapter->port[i]->logical_port_id == logical_port)
991 return adapter->port[i];
995 int ehea_sense_port_attr(struct ehea_port *port)
999 struct hcp_ehea_port_cb0 *cb0;
1001 /* may be called via ehea_neq_tasklet() */
1002 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
1004 pr_err("no mem for cb0\n");
1009 hret = ehea_h_query_ehea_port(port->adapter->handle,
1010 port->logical_port_id, H_PORT_CB0,
1011 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1013 if (hret != H_SUCCESS) {
1019 port->mac_addr = cb0->port_mac_addr << 16;
1021 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
1022 ret = -EADDRNOTAVAIL;
1027 switch (cb0->port_speed) {
1029 port->port_speed = EHEA_SPEED_10M;
1030 port->full_duplex = 0;
1033 port->port_speed = EHEA_SPEED_10M;
1034 port->full_duplex = 1;
1036 case H_SPEED_100M_H:
1037 port->port_speed = EHEA_SPEED_100M;
1038 port->full_duplex = 0;
1040 case H_SPEED_100M_F:
1041 port->port_speed = EHEA_SPEED_100M;
1042 port->full_duplex = 1;
1045 port->port_speed = EHEA_SPEED_1G;
1046 port->full_duplex = 1;
1049 port->port_speed = EHEA_SPEED_10G;
1050 port->full_duplex = 1;
1053 port->port_speed = 0;
1054 port->full_duplex = 0;
1059 port->num_mcs = cb0->num_default_qps;
1061 /* Number of default QPs */
1063 port->num_def_qps = cb0->num_default_qps;
1065 port->num_def_qps = 1;
1067 if (!port->num_def_qps) {
1074 if (ret || netif_msg_probe(port))
1075 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
1076 free_page((unsigned long)cb0);
1081 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1083 struct hcp_ehea_port_cb4 *cb4;
1087 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
1089 pr_err("no mem for cb4\n");
1094 cb4->port_speed = port_speed;
1096 netif_carrier_off(port->netdev);
1098 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1099 port->logical_port_id,
1100 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1101 if (hret == H_SUCCESS) {
1102 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1104 hret = ehea_h_query_ehea_port(port->adapter->handle,
1105 port->logical_port_id,
1106 H_PORT_CB4, H_PORT_CB4_SPEED,
1108 if (hret == H_SUCCESS) {
1109 switch (cb4->port_speed) {
1111 port->port_speed = EHEA_SPEED_10M;
1112 port->full_duplex = 0;
1115 port->port_speed = EHEA_SPEED_10M;
1116 port->full_duplex = 1;
1118 case H_SPEED_100M_H:
1119 port->port_speed = EHEA_SPEED_100M;
1120 port->full_duplex = 0;
1122 case H_SPEED_100M_F:
1123 port->port_speed = EHEA_SPEED_100M;
1124 port->full_duplex = 1;
1127 port->port_speed = EHEA_SPEED_1G;
1128 port->full_duplex = 1;
1131 port->port_speed = EHEA_SPEED_10G;
1132 port->full_duplex = 1;
1135 port->port_speed = 0;
1136 port->full_duplex = 0;
1140 pr_err("Failed sensing port speed\n");
1144 if (hret == H_AUTHORITY) {
1145 pr_info("Hypervisor denied setting port speed\n");
1149 pr_err("Failed setting port speed\n");
1152 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1153 netif_carrier_on(port->netdev);
1155 free_page((unsigned long)cb4);
1160 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1165 struct ehea_port *port;
1166 struct net_device *dev;
1168 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1169 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1170 port = ehea_get_port(adapter, portnum);
1172 netdev_err(NULL, "unknown portnum %x\n", portnum);
1178 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1180 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1181 if (!netif_carrier_ok(dev)) {
1182 ret = ehea_sense_port_attr(port);
1184 netdev_err(dev, "failed resensing port attributes\n");
1188 netif_info(port, link, dev,
1189 "Logical port up: %dMbps %s Duplex\n",
1191 port->full_duplex == 1 ?
1194 netif_carrier_on(dev);
1195 netif_wake_queue(dev);
1198 if (netif_carrier_ok(dev)) {
1199 netif_info(port, link, dev,
1200 "Logical port down\n");
1201 netif_carrier_off(dev);
1202 netif_tx_disable(dev);
1205 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1206 port->phy_link = EHEA_PHY_LINK_UP;
1207 netif_info(port, link, dev,
1208 "Physical port up\n");
1209 if (prop_carrier_state)
1210 netif_carrier_on(dev);
1212 port->phy_link = EHEA_PHY_LINK_DOWN;
1213 netif_info(port, link, dev,
1214 "Physical port down\n");
1215 if (prop_carrier_state)
1216 netif_carrier_off(dev);
1219 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1221 "External switch port is primary port\n");
1224 "External switch port is backup port\n");
1227 case EHEA_EC_ADAPTER_MALFUNC:
1228 netdev_err(dev, "Adapter malfunction\n");
1230 case EHEA_EC_PORT_MALFUNC:
1231 netdev_info(dev, "Port malfunction\n");
1232 netif_carrier_off(dev);
1233 netif_tx_disable(dev);
1236 netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe);
1241 static void ehea_neq_tasklet(unsigned long data)
1243 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1244 struct ehea_eqe *eqe;
1247 eqe = ehea_poll_eq(adapter->neq);
1248 pr_debug("eqe=%p\n", eqe);
1251 pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
1252 ehea_parse_eqe(adapter, eqe->entry);
1253 eqe = ehea_poll_eq(adapter->neq);
1254 pr_debug("next eqe=%p\n", eqe);
1257 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1258 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1259 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1261 ehea_h_reset_events(adapter->handle,
1262 adapter->neq->fw_handle, event_mask);
1265 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1267 struct ehea_adapter *adapter = param;
1268 tasklet_hi_schedule(&adapter->neq_tasklet);
1273 static int ehea_fill_port_res(struct ehea_port_res *pr)
1276 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1278 ehea_init_fill_rq1(pr, pr->rq1_skba.len);
1280 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1282 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1287 static int ehea_reg_interrupts(struct net_device *dev)
1289 struct ehea_port *port = netdev_priv(dev);
1290 struct ehea_port_res *pr;
1294 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1297 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1298 ehea_qp_aff_irq_handler,
1299 0, port->int_aff_name, port);
1301 netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1302 port->qp_eq->attr.ist1);
1306 netif_info(port, ifup, dev,
1307 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1308 port->qp_eq->attr.ist1);
1311 for (i = 0; i < port->num_def_qps; i++) {
1312 pr = &port->port_res[i];
1313 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1314 "%s-queue%d", dev->name, i);
1315 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1316 ehea_recv_irq_handler,
1317 0, pr->int_send_name, pr);
1319 netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1320 i, pr->eq->attr.ist1);
1323 netif_info(port, ifup, dev,
1324 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1325 pr->eq->attr.ist1, i);
1333 u32 ist = port->port_res[i].eq->attr.ist1;
1334 ibmebus_free_irq(ist, &port->port_res[i]);
1338 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1339 i = port->num_def_qps;
1345 static void ehea_free_interrupts(struct net_device *dev)
1347 struct ehea_port *port = netdev_priv(dev);
1348 struct ehea_port_res *pr;
1353 for (i = 0; i < port->num_def_qps; i++) {
1354 pr = &port->port_res[i];
1355 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1356 netif_info(port, intr, dev,
1357 "free send irq for res %d with handle 0x%X\n",
1358 i, pr->eq->attr.ist1);
1361 /* associated events */
1362 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1363 netif_info(port, intr, dev,
1364 "associated event interrupt for handle 0x%X freed\n",
1365 port->qp_eq->attr.ist1);
1368 static int ehea_configure_port(struct ehea_port *port)
1372 struct hcp_ehea_port_cb0 *cb0;
1375 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1379 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1380 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1381 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1382 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1383 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1384 PXLY_RC_VLAN_FILTER)
1385 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1387 for (i = 0; i < port->num_mcs; i++)
1389 cb0->default_qpn_arr[i] =
1390 port->port_res[i].qp->init_attr.qp_nr;
1392 cb0->default_qpn_arr[i] =
1393 port->port_res[0].qp->init_attr.qp_nr;
1395 if (netif_msg_ifup(port))
1396 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1398 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1399 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1401 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1402 port->logical_port_id,
1403 H_PORT_CB0, mask, cb0);
1405 if (hret != H_SUCCESS)
1411 free_page((unsigned long)cb0);
1416 static int ehea_gen_smrs(struct ehea_port_res *pr)
1419 struct ehea_adapter *adapter = pr->port->adapter;
1421 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1425 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1432 ehea_rem_mr(&pr->send_mr);
1434 pr_err("Generating SMRS failed\n");
1438 static int ehea_rem_smrs(struct ehea_port_res *pr)
1440 if ((ehea_rem_mr(&pr->send_mr)) ||
1441 (ehea_rem_mr(&pr->recv_mr)))
1447 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1449 int arr_size = sizeof(void *) * max_q_entries;
1451 q_skba->arr = vzalloc(arr_size);
1455 q_skba->len = max_q_entries;
1457 q_skba->os_skbs = 0;
1462 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1463 struct port_res_cfg *pr_cfg, int queue_token)
1465 struct ehea_adapter *adapter = port->adapter;
1466 enum ehea_eq_type eq_type = EHEA_EQ;
1467 struct ehea_qp_init_attr *init_attr = NULL;
1469 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1471 tx_bytes = pr->tx_bytes;
1472 tx_packets = pr->tx_packets;
1473 rx_bytes = pr->rx_bytes;
1474 rx_packets = pr->rx_packets;
1476 memset(pr, 0, sizeof(struct ehea_port_res));
1478 pr->tx_bytes = tx_bytes;
1479 pr->tx_packets = tx_packets;
1480 pr->rx_bytes = rx_bytes;
1481 pr->rx_packets = rx_packets;
1485 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1487 pr_err("create_eq failed (eq)\n");
1491 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1493 port->logical_port_id);
1495 pr_err("create_cq failed (cq_recv)\n");
1499 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1501 port->logical_port_id);
1503 pr_err("create_cq failed (cq_send)\n");
1507 if (netif_msg_ifup(port))
1508 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1509 pr->send_cq->attr.act_nr_of_cqes,
1510 pr->recv_cq->attr.act_nr_of_cqes);
1512 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1515 pr_err("no mem for ehea_qp_init_attr\n");
1519 init_attr->low_lat_rq1 = 1;
1520 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1521 init_attr->rq_count = 3;
1522 init_attr->qp_token = queue_token;
1523 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1524 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1525 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1526 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1527 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1528 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1529 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1530 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1531 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1532 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1533 init_attr->port_nr = port->logical_port_id;
1534 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1535 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1536 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1538 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1540 pr_err("create_qp failed\n");
1545 if (netif_msg_ifup(port))
1546 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",
1548 init_attr->act_nr_send_wqes,
1549 init_attr->act_nr_rwqes_rq1,
1550 init_attr->act_nr_rwqes_rq2,
1551 init_attr->act_nr_rwqes_rq3);
1553 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1555 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1556 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1557 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1558 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1562 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1563 if (ehea_gen_smrs(pr) != 0) {
1568 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1572 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1579 vfree(pr->sq_skba.arr);
1580 vfree(pr->rq1_skba.arr);
1581 vfree(pr->rq2_skba.arr);
1582 vfree(pr->rq3_skba.arr);
1583 ehea_destroy_qp(pr->qp);
1584 ehea_destroy_cq(pr->send_cq);
1585 ehea_destroy_cq(pr->recv_cq);
1586 ehea_destroy_eq(pr->eq);
1591 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1596 netif_napi_del(&pr->napi);
1598 ret = ehea_destroy_qp(pr->qp);
1601 ehea_destroy_cq(pr->send_cq);
1602 ehea_destroy_cq(pr->recv_cq);
1603 ehea_destroy_eq(pr->eq);
1605 for (i = 0; i < pr->rq1_skba.len; i++)
1606 if (pr->rq1_skba.arr[i])
1607 dev_kfree_skb(pr->rq1_skba.arr[i]);
1609 for (i = 0; i < pr->rq2_skba.len; i++)
1610 if (pr->rq2_skba.arr[i])
1611 dev_kfree_skb(pr->rq2_skba.arr[i]);
1613 for (i = 0; i < pr->rq3_skba.len; i++)
1614 if (pr->rq3_skba.arr[i])
1615 dev_kfree_skb(pr->rq3_skba.arr[i]);
1617 for (i = 0; i < pr->sq_skba.len; i++)
1618 if (pr->sq_skba.arr[i])
1619 dev_kfree_skb(pr->sq_skba.arr[i]);
1621 vfree(pr->rq1_skba.arr);
1622 vfree(pr->rq2_skba.arr);
1623 vfree(pr->rq3_skba.arr);
1624 vfree(pr->sq_skba.arr);
1625 ret = ehea_rem_smrs(pr);
1630 static void write_swqe2_immediate(struct sk_buff *skb, struct ehea_swqe *swqe,
1633 int skb_data_size = skb_headlen(skb);
1634 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1635 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1636 unsigned int immediate_len = SWQE2_MAX_IMM;
1638 swqe->descriptors = 0;
1640 if (skb_is_gso(skb)) {
1641 swqe->tx_control |= EHEA_SWQE_TSO;
1642 swqe->mss = skb_shinfo(skb)->gso_size;
1644 * For TSO packets we only copy the headers into the
1647 immediate_len = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1650 if (skb_is_gso(skb) || skb_data_size >= SWQE2_MAX_IMM) {
1651 skb_copy_from_linear_data(skb, imm_data, immediate_len);
1652 swqe->immediate_data_length = immediate_len;
1654 if (skb_data_size > immediate_len) {
1655 sg1entry->l_key = lkey;
1656 sg1entry->len = skb_data_size - immediate_len;
1658 ehea_map_vaddr(skb->data + immediate_len);
1659 swqe->descriptors++;
1662 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1663 swqe->immediate_data_length = skb_data_size;
1667 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1668 struct ehea_swqe *swqe, u32 lkey)
1670 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1672 int nfrags, sg1entry_contains_frag_data, i;
1674 nfrags = skb_shinfo(skb)->nr_frags;
1675 sg1entry = &swqe->u.immdata_desc.sg_entry;
1676 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1677 sg1entry_contains_frag_data = 0;
1679 write_swqe2_immediate(skb, swqe, lkey);
1681 /* write descriptors */
1683 if (swqe->descriptors == 0) {
1684 /* sg1entry not yet used */
1685 frag = &skb_shinfo(skb)->frags[0];
1687 /* copy sg1entry data */
1688 sg1entry->l_key = lkey;
1689 sg1entry->len = skb_frag_size(frag);
1691 ehea_map_vaddr(skb_frag_address(frag));
1692 swqe->descriptors++;
1693 sg1entry_contains_frag_data = 1;
1696 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1698 frag = &skb_shinfo(skb)->frags[i];
1699 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1701 sgentry->l_key = lkey;
1702 sgentry->len = skb_frag_size(frag);
1703 sgentry->vaddr = ehea_map_vaddr(skb_frag_address(frag));
1704 swqe->descriptors++;
1709 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1715 /* De/Register untagged packets */
1716 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1717 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1718 port->logical_port_id,
1719 reg_type, port->mac_addr, 0, hcallid);
1720 if (hret != H_SUCCESS) {
1721 pr_err("%sregistering bc address failed (tagged)\n",
1722 hcallid == H_REG_BCMC ? "" : "de");
1727 /* De/Register VLAN packets */
1728 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1729 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1730 port->logical_port_id,
1731 reg_type, port->mac_addr, 0, hcallid);
1732 if (hret != H_SUCCESS) {
1733 pr_err("%sregistering bc address failed (vlan)\n",
1734 hcallid == H_REG_BCMC ? "" : "de");
1741 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1743 struct ehea_port *port = netdev_priv(dev);
1744 struct sockaddr *mac_addr = sa;
1745 struct hcp_ehea_port_cb0 *cb0;
1749 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1750 ret = -EADDRNOTAVAIL;
1754 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1756 pr_err("no mem for cb0\n");
1761 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1763 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1765 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1766 port->logical_port_id, H_PORT_CB0,
1767 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1768 if (hret != H_SUCCESS) {
1773 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1775 /* Deregister old MAC in pHYP */
1776 if (port->state == EHEA_PORT_UP) {
1777 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1782 port->mac_addr = cb0->port_mac_addr << 16;
1784 /* Register new MAC in pHYP */
1785 if (port->state == EHEA_PORT_UP) {
1786 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1794 ehea_update_bcmc_registrations();
1796 free_page((unsigned long)cb0);
1801 static void ehea_promiscuous_error(u64 hret, int enable)
1803 if (hret == H_AUTHORITY)
1804 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1805 enable == 1 ? "en" : "dis");
1807 pr_err("failed %sabling promiscuous mode\n",
1808 enable == 1 ? "en" : "dis");
1811 static void ehea_promiscuous(struct net_device *dev, int enable)
1813 struct ehea_port *port = netdev_priv(dev);
1814 struct hcp_ehea_port_cb7 *cb7;
1817 if (enable == port->promisc)
1820 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
1822 pr_err("no mem for cb7\n");
1826 /* Modify Pxs_DUCQPN in CB7 */
1827 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1829 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1830 port->logical_port_id,
1831 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1833 ehea_promiscuous_error(hret, enable);
1837 port->promisc = enable;
1839 free_page((unsigned long)cb7);
1842 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1848 reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_UNTAGGED;
1849 if (mc_mac_addr == 0)
1850 reg_type |= EHEA_BCMC_SCOPE_ALL;
1852 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1853 port->logical_port_id,
1854 reg_type, mc_mac_addr, 0, hcallid);
1858 reg_type = EHEA_BCMC_MULTICAST | EHEA_BCMC_VLANID_ALL;
1859 if (mc_mac_addr == 0)
1860 reg_type |= EHEA_BCMC_SCOPE_ALL;
1862 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1863 port->logical_port_id,
1864 reg_type, mc_mac_addr, 0, hcallid);
1869 static int ehea_drop_multicast_list(struct net_device *dev)
1871 struct ehea_port *port = netdev_priv(dev);
1872 struct ehea_mc_list *mc_entry = port->mc_list;
1873 struct list_head *pos;
1874 struct list_head *temp;
1878 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1879 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1881 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1884 pr_err("failed deregistering mcast MAC\n");
1894 static void ehea_allmulti(struct net_device *dev, int enable)
1896 struct ehea_port *port = netdev_priv(dev);
1899 if (!port->allmulti) {
1901 /* Enable ALLMULTI */
1902 ehea_drop_multicast_list(dev);
1903 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1908 "failed enabling IFF_ALLMULTI\n");
1912 /* Disable ALLMULTI */
1913 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1918 "failed disabling IFF_ALLMULTI\n");
1923 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1925 struct ehea_mc_list *ehea_mcl_entry;
1928 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1929 if (!ehea_mcl_entry)
1932 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1934 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1936 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1939 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1941 pr_err("failed registering mcast MAC\n");
1942 kfree(ehea_mcl_entry);
1946 static void ehea_set_multicast_list(struct net_device *dev)
1948 struct ehea_port *port = netdev_priv(dev);
1949 struct netdev_hw_addr *ha;
1952 ehea_promiscuous(dev, !!(dev->flags & IFF_PROMISC));
1954 if (dev->flags & IFF_ALLMULTI) {
1955 ehea_allmulti(dev, 1);
1958 ehea_allmulti(dev, 0);
1960 if (!netdev_mc_empty(dev)) {
1961 ret = ehea_drop_multicast_list(dev);
1963 /* Dropping the current multicast list failed.
1964 * Enabling ALL_MULTI is the best we can do.
1966 ehea_allmulti(dev, 1);
1969 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
1970 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
1971 port->adapter->max_mc_mac);
1975 netdev_for_each_mc_addr(ha, dev)
1976 ehea_add_multicast_entry(port, ha->addr);
1980 ehea_update_bcmc_registrations();
1983 static void xmit_common(struct sk_buff *skb, struct ehea_swqe *swqe)
1985 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT | EHEA_SWQE_CRC;
1987 if (vlan_get_protocol(skb) != htons(ETH_P_IP))
1990 if (skb->ip_summed == CHECKSUM_PARTIAL)
1991 swqe->tx_control |= EHEA_SWQE_IP_CHECKSUM;
1993 swqe->ip_start = skb_network_offset(skb);
1994 swqe->ip_end = swqe->ip_start + ip_hdrlen(skb) - 1;
1996 switch (ip_hdr(skb)->protocol) {
1998 if (skb->ip_summed == CHECKSUM_PARTIAL)
1999 swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
2001 swqe->tcp_offset = swqe->ip_end + 1 +
2002 offsetof(struct udphdr, check);
2006 if (skb->ip_summed == CHECKSUM_PARTIAL)
2007 swqe->tx_control |= EHEA_SWQE_TCP_CHECKSUM;
2009 swqe->tcp_offset = swqe->ip_end + 1 +
2010 offsetof(struct tcphdr, check);
2015 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2016 struct ehea_swqe *swqe, u32 lkey)
2018 swqe->tx_control |= EHEA_SWQE_DESCRIPTORS_PRESENT;
2020 xmit_common(skb, swqe);
2022 write_swqe2_data(skb, dev, swqe, lkey);
2025 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2026 struct ehea_swqe *swqe)
2028 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2030 xmit_common(skb, swqe);
2033 skb_copy_from_linear_data(skb, imm_data, skb->len);
2035 skb_copy_bits(skb, 0, imm_data, skb->len);
2037 swqe->immediate_data_length = skb->len;
2038 dev_consume_skb_any(skb);
2041 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2043 struct ehea_port *port = netdev_priv(dev);
2044 struct ehea_swqe *swqe;
2047 struct ehea_port_res *pr;
2048 struct netdev_queue *txq;
2050 pr = &port->port_res[skb_get_queue_mapping(skb)];
2051 txq = netdev_get_tx_queue(dev, skb_get_queue_mapping(skb));
2053 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2054 memset(swqe, 0, SWQE_HEADER_SIZE);
2055 atomic_dec(&pr->swqe_avail);
2057 if (skb_vlan_tag_present(skb)) {
2058 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2059 swqe->vlan_tag = skb_vlan_tag_get(skb);
2063 pr->tx_bytes += skb->len;
2065 if (skb->len <= SWQE3_MAX_IMM) {
2066 u32 sig_iv = port->sig_comp_iv;
2067 u32 swqe_num = pr->swqe_id_counter;
2068 ehea_xmit3(skb, dev, swqe);
2069 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2070 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2071 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2072 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2074 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2075 pr->swqe_ll_count = 0;
2077 pr->swqe_ll_count += 1;
2080 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2081 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2082 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2083 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2084 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2086 pr->sq_skba.index++;
2087 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2089 lkey = pr->send_mr.lkey;
2090 ehea_xmit2(skb, dev, swqe, lkey);
2091 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2093 pr->swqe_id_counter += 1;
2095 netif_info(port, tx_queued, dev,
2096 "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
2097 if (netif_msg_tx_queued(port))
2098 ehea_dump(swqe, 512, "swqe");
2100 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2101 netif_tx_stop_queue(txq);
2102 swqe->tx_control |= EHEA_SWQE_PURGE;
2105 ehea_post_swqe(pr->qp, swqe);
2107 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2108 pr->p_stats.queue_stopped++;
2109 netif_tx_stop_queue(txq);
2112 return NETDEV_TX_OK;
2115 static int ehea_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
2117 struct ehea_port *port = netdev_priv(dev);
2118 struct ehea_adapter *adapter = port->adapter;
2119 struct hcp_ehea_port_cb1 *cb1;
2124 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2126 pr_err("no mem for cb1\n");
2131 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2132 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2133 if (hret != H_SUCCESS) {
2134 pr_err("query_ehea_port failed\n");
2140 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2142 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2143 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2144 if (hret != H_SUCCESS) {
2145 pr_err("modify_ehea_port failed\n");
2149 free_page((unsigned long)cb1);
2153 static int ehea_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
2155 struct ehea_port *port = netdev_priv(dev);
2156 struct ehea_adapter *adapter = port->adapter;
2157 struct hcp_ehea_port_cb1 *cb1;
2162 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2164 pr_err("no mem for cb1\n");
2169 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2170 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2171 if (hret != H_SUCCESS) {
2172 pr_err("query_ehea_port failed\n");
2178 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2180 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2181 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2182 if (hret != H_SUCCESS) {
2183 pr_err("modify_ehea_port failed\n");
2187 free_page((unsigned long)cb1);
2191 static int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2197 struct hcp_modify_qp_cb0 *cb0;
2199 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2205 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2206 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2207 if (hret != H_SUCCESS) {
2208 pr_err("query_ehea_qp failed (1)\n");
2212 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2213 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2214 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2215 &dummy64, &dummy64, &dummy16, &dummy16);
2216 if (hret != H_SUCCESS) {
2217 pr_err("modify_ehea_qp failed (1)\n");
2221 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2222 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2223 if (hret != H_SUCCESS) {
2224 pr_err("query_ehea_qp failed (2)\n");
2228 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2229 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2230 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2231 &dummy64, &dummy64, &dummy16, &dummy16);
2232 if (hret != H_SUCCESS) {
2233 pr_err("modify_ehea_qp failed (2)\n");
2237 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2238 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2239 if (hret != H_SUCCESS) {
2240 pr_err("query_ehea_qp failed (3)\n");
2244 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2245 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2246 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2247 &dummy64, &dummy64, &dummy16, &dummy16);
2248 if (hret != H_SUCCESS) {
2249 pr_err("modify_ehea_qp failed (3)\n");
2253 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2254 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2255 if (hret != H_SUCCESS) {
2256 pr_err("query_ehea_qp failed (4)\n");
2262 free_page((unsigned long)cb0);
2266 static int ehea_port_res_setup(struct ehea_port *port, int def_qps)
2269 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2270 enum ehea_eq_type eq_type = EHEA_EQ;
2272 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2273 EHEA_MAX_ENTRIES_EQ, 1);
2276 pr_err("ehea_create_eq failed (qp_eq)\n");
2280 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2281 pr_cfg.max_entries_scq = sq_entries * 2;
2282 pr_cfg.max_entries_sq = sq_entries;
2283 pr_cfg.max_entries_rq1 = rq1_entries;
2284 pr_cfg.max_entries_rq2 = rq2_entries;
2285 pr_cfg.max_entries_rq3 = rq3_entries;
2287 pr_cfg_small_rx.max_entries_rcq = 1;
2288 pr_cfg_small_rx.max_entries_scq = sq_entries;
2289 pr_cfg_small_rx.max_entries_sq = sq_entries;
2290 pr_cfg_small_rx.max_entries_rq1 = 1;
2291 pr_cfg_small_rx.max_entries_rq2 = 1;
2292 pr_cfg_small_rx.max_entries_rq3 = 1;
2294 for (i = 0; i < def_qps; i++) {
2295 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2299 for (i = def_qps; i < def_qps; i++) {
2300 ret = ehea_init_port_res(port, &port->port_res[i],
2301 &pr_cfg_small_rx, i);
2310 ehea_clean_portres(port, &port->port_res[i]);
2313 ehea_destroy_eq(port->qp_eq);
2317 static int ehea_clean_all_portres(struct ehea_port *port)
2322 for (i = 0; i < port->num_def_qps; i++)
2323 ret |= ehea_clean_portres(port, &port->port_res[i]);
2325 ret |= ehea_destroy_eq(port->qp_eq);
2330 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2332 if (adapter->active_ports)
2335 ehea_rem_mr(&adapter->mr);
2338 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2340 if (adapter->active_ports)
2343 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2346 static int ehea_up(struct net_device *dev)
2349 struct ehea_port *port = netdev_priv(dev);
2351 if (port->state == EHEA_PORT_UP)
2354 ret = ehea_port_res_setup(port, port->num_def_qps);
2356 netdev_err(dev, "port_res_failed\n");
2360 /* Set default QP for this port */
2361 ret = ehea_configure_port(port);
2363 netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
2367 ret = ehea_reg_interrupts(dev);
2369 netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
2373 for (i = 0; i < port->num_def_qps; i++) {
2374 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2376 netdev_err(dev, "activate_qp failed\n");
2381 for (i = 0; i < port->num_def_qps; i++) {
2382 ret = ehea_fill_port_res(&port->port_res[i]);
2384 netdev_err(dev, "out_free_irqs\n");
2389 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2395 port->state = EHEA_PORT_UP;
2401 ehea_free_interrupts(dev);
2404 ehea_clean_all_portres(port);
2407 netdev_info(dev, "Failed starting. ret=%i\n", ret);
2409 ehea_update_bcmc_registrations();
2410 ehea_update_firmware_handles();
2415 static void port_napi_disable(struct ehea_port *port)
2419 for (i = 0; i < port->num_def_qps; i++)
2420 napi_disable(&port->port_res[i].napi);
2423 static void port_napi_enable(struct ehea_port *port)
2427 for (i = 0; i < port->num_def_qps; i++)
2428 napi_enable(&port->port_res[i].napi);
2431 static int ehea_open(struct net_device *dev)
2434 struct ehea_port *port = netdev_priv(dev);
2436 mutex_lock(&port->port_lock);
2438 netif_info(port, ifup, dev, "enabling port\n");
2440 netif_carrier_off(dev);
2444 port_napi_enable(port);
2445 netif_tx_start_all_queues(dev);
2448 mutex_unlock(&port->port_lock);
2449 schedule_delayed_work(&port->stats_work,
2450 round_jiffies_relative(msecs_to_jiffies(1000)));
2455 static int ehea_down(struct net_device *dev)
2458 struct ehea_port *port = netdev_priv(dev);
2460 if (port->state == EHEA_PORT_DOWN)
2463 ehea_drop_multicast_list(dev);
2464 ehea_allmulti(dev, 0);
2465 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2467 ehea_free_interrupts(dev);
2469 port->state = EHEA_PORT_DOWN;
2471 ehea_update_bcmc_registrations();
2473 ret = ehea_clean_all_portres(port);
2475 netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
2477 ehea_update_firmware_handles();
2482 static int ehea_stop(struct net_device *dev)
2485 struct ehea_port *port = netdev_priv(dev);
2487 netif_info(port, ifdown, dev, "disabling port\n");
2489 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2490 cancel_work_sync(&port->reset_task);
2491 cancel_delayed_work_sync(&port->stats_work);
2492 mutex_lock(&port->port_lock);
2493 netif_tx_stop_all_queues(dev);
2494 port_napi_disable(port);
2495 ret = ehea_down(dev);
2496 mutex_unlock(&port->port_lock);
2497 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2501 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2503 struct ehea_qp qp = *orig_qp;
2504 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2505 struct ehea_swqe *swqe;
2509 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2510 swqe = ehea_get_swqe(&qp, &wqe_index);
2511 swqe->tx_control |= EHEA_SWQE_PURGE;
2515 static void ehea_flush_sq(struct ehea_port *port)
2519 for (i = 0; i < port->num_def_qps; i++) {
2520 struct ehea_port_res *pr = &port->port_res[i];
2521 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2524 ret = wait_event_timeout(port->swqe_avail_wq,
2525 atomic_read(&pr->swqe_avail) >= swqe_max,
2526 msecs_to_jiffies(100));
2529 pr_err("WARNING: sq not flushed completely\n");
2535 static int ehea_stop_qps(struct net_device *dev)
2537 struct ehea_port *port = netdev_priv(dev);
2538 struct ehea_adapter *adapter = port->adapter;
2539 struct hcp_modify_qp_cb0 *cb0;
2547 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2553 for (i = 0; i < (port->num_def_qps); i++) {
2554 struct ehea_port_res *pr = &port->port_res[i];
2555 struct ehea_qp *qp = pr->qp;
2557 /* Purge send queue */
2560 /* Disable queue pair */
2561 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2562 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2564 if (hret != H_SUCCESS) {
2565 pr_err("query_ehea_qp failed (1)\n");
2569 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2570 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2572 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2573 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2575 &dummy64, &dummy16, &dummy16);
2576 if (hret != H_SUCCESS) {
2577 pr_err("modify_ehea_qp failed (1)\n");
2581 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2582 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2584 if (hret != H_SUCCESS) {
2585 pr_err("query_ehea_qp failed (2)\n");
2589 /* deregister shared memory regions */
2590 dret = ehea_rem_smrs(pr);
2592 pr_err("unreg shared memory region failed\n");
2599 free_page((unsigned long)cb0);
2604 static void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2606 struct ehea_qp qp = *orig_qp;
2607 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2608 struct ehea_rwqe *rwqe;
2609 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2610 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2611 struct sk_buff *skb;
2612 u32 lkey = pr->recv_mr.lkey;
2618 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2619 rwqe = ehea_get_next_rwqe(&qp, 2);
2620 rwqe->sg_list[0].l_key = lkey;
2621 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2622 skb = skba_rq2[index];
2624 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2627 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2628 rwqe = ehea_get_next_rwqe(&qp, 3);
2629 rwqe->sg_list[0].l_key = lkey;
2630 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2631 skb = skba_rq3[index];
2633 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2637 static int ehea_restart_qps(struct net_device *dev)
2639 struct ehea_port *port = netdev_priv(dev);
2640 struct ehea_adapter *adapter = port->adapter;
2644 struct hcp_modify_qp_cb0 *cb0;
2649 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2653 for (i = 0; i < (port->num_def_qps); i++) {
2654 struct ehea_port_res *pr = &port->port_res[i];
2655 struct ehea_qp *qp = pr->qp;
2657 ret = ehea_gen_smrs(pr);
2659 netdev_err(dev, "creation of shared memory regions failed\n");
2663 ehea_update_rqs(qp, pr);
2665 /* Enable queue pair */
2666 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2667 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2669 if (hret != H_SUCCESS) {
2670 netdev_err(dev, "query_ehea_qp failed (1)\n");
2675 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2676 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2678 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2679 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2681 &dummy64, &dummy16, &dummy16);
2682 if (hret != H_SUCCESS) {
2683 netdev_err(dev, "modify_ehea_qp failed (1)\n");
2688 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2689 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2691 if (hret != H_SUCCESS) {
2692 netdev_err(dev, "query_ehea_qp failed (2)\n");
2697 /* refill entire queue */
2698 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2699 ehea_refill_rq2(pr, 0);
2700 ehea_refill_rq3(pr, 0);
2703 free_page((unsigned long)cb0);
2708 static void ehea_reset_port(struct work_struct *work)
2711 struct ehea_port *port =
2712 container_of(work, struct ehea_port, reset_task);
2713 struct net_device *dev = port->netdev;
2715 mutex_lock(&dlpar_mem_lock);
2717 mutex_lock(&port->port_lock);
2718 netif_tx_disable(dev);
2720 port_napi_disable(port);
2728 ehea_set_multicast_list(dev);
2730 netif_info(port, timer, dev, "reset successful\n");
2732 port_napi_enable(port);
2734 netif_tx_wake_all_queues(dev);
2736 mutex_unlock(&port->port_lock);
2737 mutex_unlock(&dlpar_mem_lock);
2740 static void ehea_rereg_mrs(void)
2743 struct ehea_adapter *adapter;
2745 pr_info("LPAR memory changed - re-initializing driver\n");
2747 list_for_each_entry(adapter, &adapter_list, list)
2748 if (adapter->active_ports) {
2749 /* Shutdown all ports */
2750 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2751 struct ehea_port *port = adapter->port[i];
2752 struct net_device *dev;
2759 if (dev->flags & IFF_UP) {
2760 mutex_lock(&port->port_lock);
2761 netif_tx_disable(dev);
2762 ehea_flush_sq(port);
2763 ret = ehea_stop_qps(dev);
2765 mutex_unlock(&port->port_lock);
2768 port_napi_disable(port);
2769 mutex_unlock(&port->port_lock);
2771 reset_sq_restart_flag(port);
2774 /* Unregister old memory region */
2775 ret = ehea_rem_mr(&adapter->mr);
2777 pr_err("unregister MR failed - driver inoperable!\n");
2782 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2784 list_for_each_entry(adapter, &adapter_list, list)
2785 if (adapter->active_ports) {
2786 /* Register new memory region */
2787 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2789 pr_err("register MR failed - driver inoperable!\n");
2793 /* Restart all ports */
2794 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2795 struct ehea_port *port = adapter->port[i];
2798 struct net_device *dev = port->netdev;
2800 if (dev->flags & IFF_UP) {
2801 mutex_lock(&port->port_lock);
2802 ret = ehea_restart_qps(dev);
2805 port_napi_enable(port);
2806 netif_tx_wake_all_queues(dev);
2808 netdev_err(dev, "Unable to restart QPS\n");
2810 mutex_unlock(&port->port_lock);
2815 pr_info("re-initializing driver complete\n");
2820 static void ehea_tx_watchdog(struct net_device *dev)
2822 struct ehea_port *port = netdev_priv(dev);
2824 if (netif_carrier_ok(dev) &&
2825 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2826 ehea_schedule_port_reset(port);
2829 static int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2831 struct hcp_query_ehea *cb;
2835 cb = (void *)get_zeroed_page(GFP_KERNEL);
2841 hret = ehea_h_query_ehea(adapter->handle, cb);
2843 if (hret != H_SUCCESS) {
2848 adapter->max_mc_mac = cb->max_mc_mac - 1;
2852 free_page((unsigned long)cb);
2857 static int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
2859 struct hcp_ehea_port_cb4 *cb4;
2865 /* (Try to) enable *jumbo frames */
2866 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
2868 pr_err("no mem for cb4\n");
2872 hret = ehea_h_query_ehea_port(port->adapter->handle,
2873 port->logical_port_id,
2875 H_PORT_CB4_JUMBO, cb4);
2876 if (hret == H_SUCCESS) {
2877 if (cb4->jumbo_frame)
2880 cb4->jumbo_frame = 1;
2881 hret = ehea_h_modify_ehea_port(port->adapter->
2888 if (hret == H_SUCCESS)
2894 free_page((unsigned long)cb4);
2900 static ssize_t ehea_show_port_id(struct device *dev,
2901 struct device_attribute *attr, char *buf)
2903 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2904 return sprintf(buf, "%d", port->logical_port_id);
2907 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
2910 static void logical_port_release(struct device *dev)
2912 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
2913 of_node_put(port->ofdev.dev.of_node);
2916 static struct device *ehea_register_port(struct ehea_port *port,
2917 struct device_node *dn)
2921 port->ofdev.dev.of_node = of_node_get(dn);
2922 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
2923 port->ofdev.dev.bus = &ibmebus_bus_type;
2925 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
2926 port->ofdev.dev.release = logical_port_release;
2928 ret = of_device_register(&port->ofdev);
2930 pr_err("failed to register device. ret=%d\n", ret);
2934 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
2936 pr_err("failed to register attributes, ret=%d\n", ret);
2937 goto out_unreg_of_dev;
2940 return &port->ofdev.dev;
2943 of_device_unregister(&port->ofdev);
2948 static void ehea_unregister_port(struct ehea_port *port)
2950 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
2951 of_device_unregister(&port->ofdev);
2954 static const struct net_device_ops ehea_netdev_ops = {
2955 .ndo_open = ehea_open,
2956 .ndo_stop = ehea_stop,
2957 .ndo_start_xmit = ehea_start_xmit,
2958 #ifdef CONFIG_NET_POLL_CONTROLLER
2959 .ndo_poll_controller = ehea_netpoll,
2961 .ndo_get_stats64 = ehea_get_stats64,
2962 .ndo_set_mac_address = ehea_set_mac_addr,
2963 .ndo_validate_addr = eth_validate_addr,
2964 .ndo_set_rx_mode = ehea_set_multicast_list,
2965 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
2966 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
2967 .ndo_tx_timeout = ehea_tx_watchdog,
2970 static struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
2971 u32 logical_port_id,
2972 struct device_node *dn)
2975 struct net_device *dev;
2976 struct ehea_port *port;
2977 struct device *port_dev;
2980 /* allocate memory for the port structures */
2981 dev = alloc_etherdev_mq(sizeof(struct ehea_port), EHEA_MAX_PORT_RES);
2988 port = netdev_priv(dev);
2990 mutex_init(&port->port_lock);
2991 port->state = EHEA_PORT_DOWN;
2992 port->sig_comp_iv = sq_entries / 10;
2994 port->adapter = adapter;
2996 port->logical_port_id = logical_port_id;
2998 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3000 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3001 if (!port->mc_list) {
3003 goto out_free_ethdev;
3006 INIT_LIST_HEAD(&port->mc_list->list);
3008 ret = ehea_sense_port_attr(port);
3010 goto out_free_mc_list;
3012 netif_set_real_num_rx_queues(dev, port->num_def_qps);
3013 netif_set_real_num_tx_queues(dev, port->num_def_qps);
3015 port_dev = ehea_register_port(port, dn);
3017 goto out_free_mc_list;
3019 SET_NETDEV_DEV(dev, port_dev);
3021 /* initialize net_device structure */
3022 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3024 dev->netdev_ops = &ehea_netdev_ops;
3025 ehea_set_ethtool_ops(dev);
3027 dev->hw_features = NETIF_F_SG | NETIF_F_TSO |
3028 NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_CTAG_TX;
3029 dev->features = NETIF_F_SG | NETIF_F_TSO |
3030 NETIF_F_HIGHDMA | NETIF_F_IP_CSUM |
3031 NETIF_F_HW_VLAN_CTAG_TX | NETIF_F_HW_VLAN_CTAG_RX |
3032 NETIF_F_HW_VLAN_CTAG_FILTER | NETIF_F_RXCSUM;
3033 dev->vlan_features = NETIF_F_SG | NETIF_F_TSO | NETIF_F_HIGHDMA |
3035 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3037 /* MTU range: 68 - 9022 */
3038 dev->min_mtu = ETH_MIN_MTU;
3039 dev->max_mtu = EHEA_MAX_PACKET_SIZE;
3041 INIT_WORK(&port->reset_task, ehea_reset_port);
3042 INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats);
3044 init_waitqueue_head(&port->swqe_avail_wq);
3045 init_waitqueue_head(&port->restart_wq);
3047 ret = register_netdev(dev);
3049 pr_err("register_netdev failed. ret=%d\n", ret);
3050 goto out_unreg_port;
3053 ret = ehea_get_jumboframe_status(port, &jumbo);
3055 netdev_err(dev, "failed determining jumbo frame status\n");
3057 netdev_info(dev, "Jumbo frames are %sabled\n",
3058 jumbo == 1 ? "en" : "dis");
3060 adapter->active_ports++;
3065 ehea_unregister_port(port);
3068 kfree(port->mc_list);
3074 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3075 logical_port_id, ret);
3079 static void ehea_shutdown_single_port(struct ehea_port *port)
3081 struct ehea_adapter *adapter = port->adapter;
3083 cancel_work_sync(&port->reset_task);
3084 cancel_delayed_work_sync(&port->stats_work);
3085 unregister_netdev(port->netdev);
3086 ehea_unregister_port(port);
3087 kfree(port->mc_list);
3088 free_netdev(port->netdev);
3089 adapter->active_ports--;
3092 static int ehea_setup_ports(struct ehea_adapter *adapter)
3094 struct device_node *lhea_dn;
3095 struct device_node *eth_dn = NULL;
3097 const u32 *dn_log_port_id;
3100 lhea_dn = adapter->ofdev->dev.of_node;
3101 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3103 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3105 if (!dn_log_port_id) {
3106 pr_err("bad device node: eth_dn name=%pOF\n", eth_dn);
3110 if (ehea_add_adapter_mr(adapter)) {
3111 pr_err("creating MR failed\n");
3112 of_node_put(eth_dn);
3116 adapter->port[i] = ehea_setup_single_port(adapter,
3119 if (adapter->port[i])
3120 netdev_info(adapter->port[i]->netdev,
3121 "logical port id #%d\n", *dn_log_port_id);
3123 ehea_remove_adapter_mr(adapter);
3130 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3131 u32 logical_port_id)
3133 struct device_node *lhea_dn;
3134 struct device_node *eth_dn = NULL;
3135 const u32 *dn_log_port_id;
3137 lhea_dn = adapter->ofdev->dev.of_node;
3138 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3140 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3143 if (*dn_log_port_id == logical_port_id)
3150 static ssize_t ehea_probe_port(struct device *dev,
3151 struct device_attribute *attr,
3152 const char *buf, size_t count)
3154 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3155 struct ehea_port *port;
3156 struct device_node *eth_dn = NULL;
3159 u32 logical_port_id;
3161 sscanf(buf, "%d", &logical_port_id);
3163 port = ehea_get_port(adapter, logical_port_id);
3166 netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
3171 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3174 pr_info("no logical port with id %d found\n", logical_port_id);
3178 if (ehea_add_adapter_mr(adapter)) {
3179 pr_err("creating MR failed\n");
3180 of_node_put(eth_dn);
3184 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3186 of_node_put(eth_dn);
3189 for (i = 0; i < EHEA_MAX_PORTS; i++)
3190 if (!adapter->port[i]) {
3191 adapter->port[i] = port;
3195 netdev_info(port->netdev, "added: (logical port id=%d)\n",
3198 ehea_remove_adapter_mr(adapter);
3202 return (ssize_t) count;
3205 static ssize_t ehea_remove_port(struct device *dev,
3206 struct device_attribute *attr,
3207 const char *buf, size_t count)
3209 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3210 struct ehea_port *port;
3212 u32 logical_port_id;
3214 sscanf(buf, "%d", &logical_port_id);
3216 port = ehea_get_port(adapter, logical_port_id);
3219 netdev_info(port->netdev, "removed: (logical port id=%d)\n",
3222 ehea_shutdown_single_port(port);
3224 for (i = 0; i < EHEA_MAX_PORTS; i++)
3225 if (adapter->port[i] == port) {
3226 adapter->port[i] = NULL;
3230 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3235 ehea_remove_adapter_mr(adapter);
3237 return (ssize_t) count;
3240 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3241 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3243 static int ehea_create_device_sysfs(struct platform_device *dev)
3245 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3249 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3254 static void ehea_remove_device_sysfs(struct platform_device *dev)
3256 device_remove_file(&dev->dev, &dev_attr_probe_port);
3257 device_remove_file(&dev->dev, &dev_attr_remove_port);
3260 static int ehea_reboot_notifier(struct notifier_block *nb,
3261 unsigned long action, void *unused)
3263 if (action == SYS_RESTART) {
3264 pr_info("Reboot: freeing all eHEA resources\n");
3265 ibmebus_unregister_driver(&ehea_driver);
3270 static struct notifier_block ehea_reboot_nb = {
3271 .notifier_call = ehea_reboot_notifier,
3274 static int ehea_mem_notifier(struct notifier_block *nb,
3275 unsigned long action, void *data)
3277 int ret = NOTIFY_BAD;
3278 struct memory_notify *arg = data;
3280 mutex_lock(&dlpar_mem_lock);
3283 case MEM_CANCEL_OFFLINE:
3284 pr_info("memory offlining canceled");
3285 /* Fall through: re-add canceled memory block */
3288 pr_info("memory is going online");
3289 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3290 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3295 case MEM_GOING_OFFLINE:
3296 pr_info("memory is going offline");
3297 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3298 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3307 ehea_update_firmware_handles();
3311 mutex_unlock(&dlpar_mem_lock);
3315 static struct notifier_block ehea_mem_nb = {
3316 .notifier_call = ehea_mem_notifier,
3319 static void ehea_crash_handler(void)
3323 if (ehea_fw_handles.arr)
3324 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3325 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3326 ehea_fw_handles.arr[i].fwh,
3329 if (ehea_bcmc_regs.arr)
3330 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3331 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3332 ehea_bcmc_regs.arr[i].port_id,
3333 ehea_bcmc_regs.arr[i].reg_type,
3334 ehea_bcmc_regs.arr[i].macaddr,
3338 static atomic_t ehea_memory_hooks_registered;
3340 /* Register memory hooks on probe of first adapter */
3341 static int ehea_register_memory_hooks(void)
3345 if (atomic_inc_return(&ehea_memory_hooks_registered) > 1)
3348 ret = ehea_create_busmap();
3350 pr_info("ehea_create_busmap failed\n");
3354 ret = register_reboot_notifier(&ehea_reboot_nb);
3356 pr_info("register_reboot_notifier failed\n");
3360 ret = register_memory_notifier(&ehea_mem_nb);
3362 pr_info("register_memory_notifier failed\n");
3366 ret = crash_shutdown_register(ehea_crash_handler);
3368 pr_info("crash_shutdown_register failed\n");
3375 unregister_memory_notifier(&ehea_mem_nb);
3377 unregister_reboot_notifier(&ehea_reboot_nb);
3379 atomic_dec(&ehea_memory_hooks_registered);
3383 static void ehea_unregister_memory_hooks(void)
3385 /* Only remove the hooks if we've registered them */
3386 if (atomic_read(&ehea_memory_hooks_registered) == 0)
3389 unregister_reboot_notifier(&ehea_reboot_nb);
3390 if (crash_shutdown_unregister(ehea_crash_handler))
3391 pr_info("failed unregistering crash handler\n");
3392 unregister_memory_notifier(&ehea_mem_nb);
3395 static int ehea_probe_adapter(struct platform_device *dev)
3397 struct ehea_adapter *adapter;
3398 const u64 *adapter_handle;
3402 ret = ehea_register_memory_hooks();
3406 if (!dev || !dev->dev.of_node) {
3407 pr_err("Invalid ibmebus device probed\n");
3411 adapter = devm_kzalloc(&dev->dev, sizeof(*adapter), GFP_KERNEL);
3414 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3418 list_add(&adapter->list, &adapter_list);
3420 adapter->ofdev = dev;
3422 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
3425 adapter->handle = *adapter_handle;
3427 if (!adapter->handle) {
3428 dev_err(&dev->dev, "failed getting handle for adapter"
3429 " '%pOF'\n", dev->dev.of_node);
3434 adapter->pd = EHEA_PD_ID;
3436 platform_set_drvdata(dev, adapter);
3439 /* initialize adapter and ports */
3440 /* get adapter properties */
3441 ret = ehea_sense_adapter_attr(adapter);
3443 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3447 adapter->neq = ehea_create_eq(adapter,
3448 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3449 if (!adapter->neq) {
3451 dev_err(&dev->dev, "NEQ creation failed\n");
3455 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3456 (unsigned long)adapter);
3458 ret = ehea_create_device_sysfs(dev);
3462 ret = ehea_setup_ports(adapter);
3464 dev_err(&dev->dev, "setup_ports failed\n");
3465 goto out_rem_dev_sysfs;
3468 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3469 ehea_interrupt_neq, 0,
3470 "ehea_neq", adapter);
3472 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3473 goto out_shutdown_ports;
3476 /* Handle any events that might be pending. */
3477 tasklet_hi_schedule(&adapter->neq_tasklet);
3483 for (i = 0; i < EHEA_MAX_PORTS; i++)
3484 if (adapter->port[i]) {
3485 ehea_shutdown_single_port(adapter->port[i]);
3486 adapter->port[i] = NULL;
3490 ehea_remove_device_sysfs(dev);
3493 ehea_destroy_eq(adapter->neq);
3496 list_del(&adapter->list);
3499 ehea_update_firmware_handles();
3504 static int ehea_remove(struct platform_device *dev)
3506 struct ehea_adapter *adapter = platform_get_drvdata(dev);
3509 for (i = 0; i < EHEA_MAX_PORTS; i++)
3510 if (adapter->port[i]) {
3511 ehea_shutdown_single_port(adapter->port[i]);
3512 adapter->port[i] = NULL;
3515 ehea_remove_device_sysfs(dev);
3517 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3518 tasklet_kill(&adapter->neq_tasklet);
3520 ehea_destroy_eq(adapter->neq);
3521 ehea_remove_adapter_mr(adapter);
3522 list_del(&adapter->list);
3524 ehea_update_firmware_handles();
3529 static int check_module_parm(void)
3533 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3534 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3535 pr_info("Bad parameter: rq1_entries\n");
3538 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3539 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3540 pr_info("Bad parameter: rq2_entries\n");
3543 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3544 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3545 pr_info("Bad parameter: rq3_entries\n");
3548 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3549 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3550 pr_info("Bad parameter: sq_entries\n");
3557 static ssize_t capabilities_show(struct device_driver *drv, char *buf)
3559 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3562 static DRIVER_ATTR_RO(capabilities);
3564 static int __init ehea_module_init(void)
3568 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
3570 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3571 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3573 mutex_init(&ehea_fw_handles.lock);
3574 spin_lock_init(&ehea_bcmc_regs.lock);
3576 ret = check_module_parm();
3580 ret = ibmebus_register_driver(&ehea_driver);
3582 pr_err("failed registering eHEA device driver on ebus\n");
3586 ret = driver_create_file(&ehea_driver.driver,
3587 &driver_attr_capabilities);
3589 pr_err("failed to register capabilities attribute, ret=%d\n",
3597 ibmebus_unregister_driver(&ehea_driver);
3602 static void __exit ehea_module_exit(void)
3604 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3605 ibmebus_unregister_driver(&ehea_driver);
3606 ehea_unregister_memory_hooks();
3607 kfree(ehea_fw_handles.arr);
3608 kfree(ehea_bcmc_regs.arr);
3609 ehea_destroy_busmap();
3612 module_init(ehea_module_init);
3613 module_exit(ehea_module_exit);