2 * linux/drivers/net/ehea/ehea_main.c
4 * eHEA ethernet device driver for IBM eServer System p
6 * (C) Copyright IBM Corp. 2006
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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;
66 static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
67 static int num_tx_qps = EHEA_NUM_TX_QP;
68 static int prop_carrier_state;
70 module_param(msg_level, int, 0);
71 module_param(rq1_entries, int, 0);
72 module_param(rq2_entries, int, 0);
73 module_param(rq3_entries, int, 0);
74 module_param(sq_entries, int, 0);
75 module_param(prop_carrier_state, int, 0);
76 module_param(use_mcs, int, 0);
77 module_param(use_lro, int, 0);
78 module_param(lro_max_aggr, int, 0);
79 module_param(num_tx_qps, int, 0);
81 MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
82 MODULE_PARM_DESC(msg_level, "msg_level");
83 MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
84 "port to stack. 1:yes, 0:no. Default = 0 ");
85 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
86 "[2^x - 1], x = [6..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
88 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
89 "[2^x - 1], x = [6..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
91 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
92 "[2^x - 1], x = [6..14]. Default = "
93 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
94 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
95 "[2^x - 1], x = [6..14]. Default = "
96 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
97 MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
99 MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
100 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
101 MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
104 static int port_name_cnt;
105 static LIST_HEAD(adapter_list);
106 static unsigned long ehea_driver_flags;
107 static DEFINE_MUTEX(dlpar_mem_lock);
108 struct ehea_fw_handle_array ehea_fw_handles;
109 struct ehea_bcmc_reg_array ehea_bcmc_regs;
112 static int __devinit ehea_probe_adapter(struct platform_device *dev,
113 const struct of_device_id *id);
115 static int __devexit ehea_remove(struct platform_device *dev);
117 static struct of_device_id ehea_device_table[] = {
120 .compatible = "IBM,lhea",
124 MODULE_DEVICE_TABLE(of, ehea_device_table);
126 static struct of_platform_driver ehea_driver = {
129 .owner = THIS_MODULE,
130 .of_match_table = ehea_device_table,
132 .probe = ehea_probe_adapter,
133 .remove = ehea_remove,
136 void ehea_dump(void *adr, int len, char *msg)
139 unsigned char *deb = adr;
140 for (x = 0; x < len; x += 16) {
141 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
142 msg, deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
147 void ehea_schedule_port_reset(struct ehea_port *port)
149 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
150 schedule_work(&port->reset_task);
153 static void ehea_update_firmware_handles(void)
155 struct ehea_fw_handle_entry *arr = NULL;
156 struct ehea_adapter *adapter;
157 int num_adapters = 0;
161 int num_fw_handles, k, l;
163 /* Determine number of handles */
164 mutex_lock(&ehea_fw_handles.lock);
166 list_for_each_entry(adapter, &adapter_list, list) {
169 for (k = 0; k < EHEA_MAX_PORTS; k++) {
170 struct ehea_port *port = adapter->port[k];
172 if (!port || (port->state != EHEA_PORT_UP))
176 num_portres += port->num_def_qps + port->num_add_tx_qps;
180 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
181 num_ports * EHEA_NUM_PORT_FW_HANDLES +
182 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
184 if (num_fw_handles) {
185 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
187 goto out; /* Keep the existing array */
191 list_for_each_entry(adapter, &adapter_list, list) {
192 if (num_adapters == 0)
195 for (k = 0; k < EHEA_MAX_PORTS; k++) {
196 struct ehea_port *port = adapter->port[k];
198 if (!port || (port->state != EHEA_PORT_UP) ||
203 l < port->num_def_qps + port->num_add_tx_qps;
205 struct ehea_port_res *pr = &port->port_res[l];
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = pr->qp->fw_handle;
209 arr[i].adh = adapter->handle;
210 arr[i++].fwh = pr->send_cq->fw_handle;
211 arr[i].adh = adapter->handle;
212 arr[i++].fwh = pr->recv_cq->fw_handle;
213 arr[i].adh = adapter->handle;
214 arr[i++].fwh = pr->eq->fw_handle;
215 arr[i].adh = adapter->handle;
216 arr[i++].fwh = pr->send_mr.handle;
217 arr[i].adh = adapter->handle;
218 arr[i++].fwh = pr->recv_mr.handle;
220 arr[i].adh = adapter->handle;
221 arr[i++].fwh = port->qp_eq->fw_handle;
225 arr[i].adh = adapter->handle;
226 arr[i++].fwh = adapter->neq->fw_handle;
228 if (adapter->mr.handle) {
229 arr[i].adh = adapter->handle;
230 arr[i++].fwh = adapter->mr.handle;
236 kfree(ehea_fw_handles.arr);
237 ehea_fw_handles.arr = arr;
238 ehea_fw_handles.num_entries = i;
240 mutex_unlock(&ehea_fw_handles.lock);
243 static void ehea_update_bcmc_registrations(void)
246 struct ehea_bcmc_reg_entry *arr = NULL;
247 struct ehea_adapter *adapter;
248 struct ehea_mc_list *mc_entry;
249 int num_registrations = 0;
253 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
255 /* Determine number of registrations */
256 list_for_each_entry(adapter, &adapter_list, list)
257 for (k = 0; k < EHEA_MAX_PORTS; k++) {
258 struct ehea_port *port = adapter->port[k];
260 if (!port || (port->state != EHEA_PORT_UP))
263 num_registrations += 2; /* Broadcast registrations */
265 list_for_each_entry(mc_entry, &port->mc_list->list,list)
266 num_registrations += 2;
269 if (num_registrations) {
270 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
272 goto out; /* Keep the existing array */
276 list_for_each_entry(adapter, &adapter_list, list) {
277 for (k = 0; k < EHEA_MAX_PORTS; k++) {
278 struct ehea_port *port = adapter->port[k];
280 if (!port || (port->state != EHEA_PORT_UP))
283 if (num_registrations == 0)
286 arr[i].adh = adapter->handle;
287 arr[i].port_id = port->logical_port_id;
288 arr[i].reg_type = EHEA_BCMC_BROADCAST |
290 arr[i++].macaddr = port->mac_addr;
292 arr[i].adh = adapter->handle;
293 arr[i].port_id = port->logical_port_id;
294 arr[i].reg_type = EHEA_BCMC_BROADCAST |
295 EHEA_BCMC_VLANID_ALL;
296 arr[i++].macaddr = port->mac_addr;
297 num_registrations -= 2;
299 list_for_each_entry(mc_entry,
300 &port->mc_list->list, list) {
301 if (num_registrations == 0)
304 arr[i].adh = adapter->handle;
305 arr[i].port_id = port->logical_port_id;
306 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
307 EHEA_BCMC_MULTICAST |
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_SCOPE_ALL |
314 EHEA_BCMC_MULTICAST |
315 EHEA_BCMC_VLANID_ALL;
316 arr[i++].macaddr = mc_entry->macaddr;
317 num_registrations -= 2;
323 kfree(ehea_bcmc_regs.arr);
324 ehea_bcmc_regs.arr = arr;
325 ehea_bcmc_regs.num_entries = i;
327 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
330 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
332 struct ehea_port *port = netdev_priv(dev);
333 struct net_device_stats *stats = &port->stats;
334 u64 rx_packets = 0, tx_packets = 0, rx_bytes = 0, tx_bytes = 0;
337 for (i = 0; i < port->num_def_qps; i++) {
338 rx_packets += port->port_res[i].rx_packets;
339 rx_bytes += port->port_res[i].rx_bytes;
342 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
343 tx_packets += port->port_res[i].tx_packets;
344 tx_bytes += port->port_res[i].tx_bytes;
347 stats->tx_packets = tx_packets;
348 stats->rx_bytes = rx_bytes;
349 stats->tx_bytes = tx_bytes;
350 stats->rx_packets = rx_packets;
355 static void ehea_update_stats(struct work_struct *work)
357 struct ehea_port *port =
358 container_of(work, struct ehea_port, stats_work.work);
359 struct net_device *dev = port->netdev;
360 struct net_device_stats *stats = &port->stats;
361 struct hcp_ehea_port_cb2 *cb2;
364 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
366 netdev_err(dev, "No mem for cb2. Some interface statistics were not updated\n");
370 hret = ehea_h_query_ehea_port(port->adapter->handle,
371 port->logical_port_id,
372 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
373 if (hret != H_SUCCESS) {
374 netdev_err(dev, "query_ehea_port failed\n");
378 if (netif_msg_hw(port))
379 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
381 stats->multicast = cb2->rxmcp;
382 stats->rx_errors = cb2->rxuerr;
385 free_page((unsigned long)cb2);
387 schedule_delayed_work(&port->stats_work, msecs_to_jiffies(1000));
390 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
392 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
393 struct net_device *dev = pr->port->netdev;
394 int max_index_mask = pr->rq1_skba.len - 1;
395 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
399 pr->rq1_skba.os_skbs = 0;
401 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
403 pr->rq1_skba.index = index;
404 pr->rq1_skba.os_skbs = fill_wqes;
408 for (i = 0; i < fill_wqes; i++) {
409 if (!skb_arr_rq1[index]) {
410 skb_arr_rq1[index] = netdev_alloc_skb(dev,
412 if (!skb_arr_rq1[index]) {
413 netdev_info(dev, "Unable to allocate enough skb in the array\n");
414 pr->rq1_skba.os_skbs = fill_wqes - i;
419 index &= max_index_mask;
427 ehea_update_rq1a(pr->qp, adder);
430 static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
432 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
433 struct net_device *dev = pr->port->netdev;
436 if (nr_rq1a > pr->rq1_skba.len) {
437 netdev_err(dev, "NR_RQ1A bigger than skb array len\n");
441 for (i = 0; i < nr_rq1a; i++) {
442 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
443 if (!skb_arr_rq1[i]) {
444 netdev_info(dev, "Not enough memory to allocate skb array\n");
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) {
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)
556 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
558 skb_put(skb, length);
559 skb->protocol = eth_type_trans(skb, dev);
561 /* The packet was not an IPV4 packet so a complemented checksum was
562 calculated. The value is found in the Internet Checksum field. */
563 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
564 skb->ip_summed = CHECKSUM_COMPLETE;
565 skb->csum = csum_unfold(~cqe->inet_checksum_value);
567 skb->ip_summed = CHECKSUM_UNNECESSARY;
570 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
572 struct ehea_cqe *cqe)
574 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
585 prefetchw(pref + EHEA_CACHE_LINE);
587 pref = (skb_array[x]->data);
589 prefetch(pref + EHEA_CACHE_LINE);
590 prefetch(pref + EHEA_CACHE_LINE * 2);
591 prefetch(pref + EHEA_CACHE_LINE * 3);
594 skb = skb_array[skb_index];
595 skb_array[skb_index] = NULL;
599 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
600 int arr_len, int wqe_index)
612 prefetchw(pref + EHEA_CACHE_LINE);
614 pref = (skb_array[x]->data);
616 prefetchw(pref + EHEA_CACHE_LINE);
619 skb = skb_array[wqe_index];
620 skb_array[wqe_index] = NULL;
624 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
625 struct ehea_cqe *cqe, int *processed_rq2,
630 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
631 pr->p_stats.err_tcp_cksum++;
632 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
633 pr->p_stats.err_ip_cksum++;
634 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
635 pr->p_stats.err_frame_crc++;
639 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
641 } else if (rq == 3) {
643 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
647 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
648 if (netif_msg_rx_err(pr->port)) {
649 pr_err("Critical receive error for QP %d. Resetting port.\n",
650 pr->qp->init_attr.qp_nr);
651 ehea_dump(cqe, sizeof(*cqe), "CQE");
653 ehea_schedule_port_reset(pr->port);
660 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
661 void **tcph, u64 *hdr_flags, void *priv)
663 struct ehea_cqe *cqe = priv;
667 /* non tcp/udp packets */
668 if (!cqe->header_length)
672 skb_reset_network_header(skb);
674 if (iph->protocol != IPPROTO_TCP)
677 ip_len = ip_hdrlen(skb);
678 skb_set_transport_header(skb, ip_len);
679 *tcph = tcp_hdr(skb);
681 /* check if ip header and tcp header are complete */
682 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
685 *hdr_flags = LRO_IPV4 | LRO_TCP;
691 static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
694 if (cqe->status & EHEA_CQE_VLAN_TAG_XTRACT)
695 __vlan_hwaccel_put_tag(skb, cqe->vlan_tag);
697 if (skb->dev->features & NETIF_F_LRO)
698 lro_receive_skb(&pr->lro_mgr, skb, cqe);
700 netif_receive_skb(skb);
703 static int ehea_proc_rwqes(struct net_device *dev,
704 struct ehea_port_res *pr,
707 struct ehea_port *port = pr->port;
708 struct ehea_qp *qp = pr->qp;
709 struct ehea_cqe *cqe;
711 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
712 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
713 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
714 int skb_arr_rq1_len = pr->rq1_skba.len;
715 int skb_arr_rq2_len = pr->rq2_skba.len;
716 int skb_arr_rq3_len = pr->rq3_skba.len;
717 int processed, processed_rq1, processed_rq2, processed_rq3;
718 u64 processed_bytes = 0;
719 int wqe_index, last_wqe_index, rq, port_reset;
721 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
724 cqe = ehea_poll_rq1(qp, &wqe_index);
725 while ((processed < budget) && cqe) {
729 if (netif_msg_rx_status(port))
730 ehea_dump(cqe, sizeof(*cqe), "CQE");
732 last_wqe_index = wqe_index;
734 if (!ehea_check_cqe(cqe, &rq)) {
737 skb = get_skb_by_index_ll(skb_arr_rq1,
740 if (unlikely(!skb)) {
741 netif_info(port, rx_err, dev,
742 "LL rq1: skb=NULL\n");
744 skb = netdev_alloc_skb(dev,
747 netdev_err(dev, "Not enough memory to allocate skb\n");
751 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
752 cqe->num_bytes_transfered - 4);
753 ehea_fill_skb(dev, skb, cqe);
754 } else if (rq == 2) {
756 skb = get_skb_by_index(skb_arr_rq2,
757 skb_arr_rq2_len, cqe);
758 if (unlikely(!skb)) {
759 netif_err(port, rx_err, dev,
763 ehea_fill_skb(dev, skb, cqe);
767 skb = get_skb_by_index(skb_arr_rq3,
768 skb_arr_rq3_len, cqe);
769 if (unlikely(!skb)) {
770 netif_err(port, rx_err, dev,
774 ehea_fill_skb(dev, skb, cqe);
778 processed_bytes += skb->len;
779 ehea_proc_skb(pr, cqe, skb);
781 pr->p_stats.poll_receive_errors++;
782 port_reset = ehea_treat_poll_error(pr, rq, cqe,
788 cqe = ehea_poll_rq1(qp, &wqe_index);
790 if (dev->features & NETIF_F_LRO)
791 lro_flush_all(&pr->lro_mgr);
793 pr->rx_packets += processed;
794 pr->rx_bytes += processed_bytes;
796 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
797 ehea_refill_rq2(pr, processed_rq2);
798 ehea_refill_rq3(pr, processed_rq3);
803 #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
805 static void reset_sq_restart_flag(struct ehea_port *port)
809 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
810 struct ehea_port_res *pr = &port->port_res[i];
811 pr->sq_restart_flag = 0;
813 wake_up(&port->restart_wq);
816 static void check_sqs(struct ehea_port *port)
818 struct ehea_swqe *swqe;
822 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
823 struct ehea_port_res *pr = &port->port_res[i];
826 swqe = ehea_get_swqe(pr->qp, &swqe_index);
827 memset(swqe, 0, SWQE_HEADER_SIZE);
828 atomic_dec(&pr->swqe_avail);
830 swqe->tx_control |= EHEA_SWQE_PURGE;
831 swqe->wr_id = SWQE_RESTART_CHECK;
832 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
833 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
834 swqe->immediate_data_length = 80;
836 ehea_post_swqe(pr->qp, swqe);
838 ret = wait_event_timeout(port->restart_wq,
839 pr->sq_restart_flag == 0,
840 msecs_to_jiffies(100));
843 pr_err("HW/SW queues out of sync\n");
844 ehea_schedule_port_reset(pr->port);
851 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
854 struct ehea_cq *send_cq = pr->send_cq;
855 struct ehea_cqe *cqe;
856 int quota = my_quota;
862 cqe = ehea_poll_cq(send_cq);
863 while (cqe && (quota > 0)) {
864 ehea_inc_cq(send_cq);
869 if (cqe->wr_id == SWQE_RESTART_CHECK) {
870 pr->sq_restart_flag = 1;
875 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
876 pr_err("Bad send completion status=0x%04X\n",
879 if (netif_msg_tx_err(pr->port))
880 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
882 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
883 pr_err("Resetting port\n");
884 ehea_schedule_port_reset(pr->port);
889 if (netif_msg_tx_done(pr->port))
890 ehea_dump(cqe, sizeof(*cqe), "CQE");
892 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
893 == EHEA_SWQE2_TYPE)) {
895 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
896 skb = pr->sq_skba.arr[index];
898 pr->sq_skba.arr[index] = NULL;
901 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
904 cqe = ehea_poll_cq(send_cq);
907 ehea_update_feca(send_cq, cqe_counter);
908 atomic_add(swqe_av, &pr->swqe_avail);
910 spin_lock_irqsave(&pr->netif_queue, flags);
912 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
913 >= pr->swqe_refill_th)) {
914 netif_wake_queue(pr->port->netdev);
915 pr->queue_stopped = 0;
917 spin_unlock_irqrestore(&pr->netif_queue, flags);
918 wake_up(&pr->port->swqe_avail_wq);
923 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
924 #define EHEA_POLL_MAX_CQES 65535
926 static int ehea_poll(struct napi_struct *napi, int budget)
928 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
930 struct net_device *dev = pr->port->netdev;
931 struct ehea_cqe *cqe;
932 struct ehea_cqe *cqe_skb = NULL;
933 int force_irq, wqe_index;
936 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
937 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
940 rx += ehea_proc_rwqes(dev, pr, budget - rx);
942 while ((rx != budget) || force_irq) {
943 pr->poll_counter = 0;
946 ehea_reset_cq_ep(pr->recv_cq);
947 ehea_reset_cq_ep(pr->send_cq);
948 ehea_reset_cq_n1(pr->recv_cq);
949 ehea_reset_cq_n1(pr->send_cq);
951 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
952 cqe_skb = ehea_poll_cq(pr->send_cq);
954 if (!cqe && !cqe_skb)
957 if (!napi_reschedule(napi))
960 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
961 rx += ehea_proc_rwqes(dev, pr, budget - rx);
968 #ifdef CONFIG_NET_POLL_CONTROLLER
969 static void ehea_netpoll(struct net_device *dev)
971 struct ehea_port *port = netdev_priv(dev);
974 for (i = 0; i < port->num_def_qps; i++)
975 napi_schedule(&port->port_res[i].napi);
979 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
981 struct ehea_port_res *pr = param;
983 napi_schedule(&pr->napi);
988 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
990 struct ehea_port *port = param;
991 struct ehea_eqe *eqe;
994 u64 resource_type, aer, aerr;
997 eqe = ehea_poll_eq(port->qp_eq);
1000 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
1001 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
1002 eqe->entry, qp_token);
1004 qp = port->port_res[qp_token].qp;
1006 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
1009 if (resource_type == EHEA_AER_RESTYPE_QP) {
1010 if ((aer & EHEA_AER_RESET_MASK) ||
1011 (aerr & EHEA_AERR_RESET_MASK))
1014 reset_port = 1; /* Reset in case of CQ or EQ error */
1016 eqe = ehea_poll_eq(port->qp_eq);
1020 pr_err("Resetting port\n");
1021 ehea_schedule_port_reset(port);
1027 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
1032 for (i = 0; i < EHEA_MAX_PORTS; i++)
1033 if (adapter->port[i])
1034 if (adapter->port[i]->logical_port_id == logical_port)
1035 return adapter->port[i];
1039 int ehea_sense_port_attr(struct ehea_port *port)
1043 struct hcp_ehea_port_cb0 *cb0;
1045 /* may be called via ehea_neq_tasklet() */
1046 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
1048 pr_err("no mem for cb0\n");
1053 hret = ehea_h_query_ehea_port(port->adapter->handle,
1054 port->logical_port_id, H_PORT_CB0,
1055 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1057 if (hret != H_SUCCESS) {
1063 port->mac_addr = cb0->port_mac_addr << 16;
1065 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
1066 ret = -EADDRNOTAVAIL;
1071 switch (cb0->port_speed) {
1073 port->port_speed = EHEA_SPEED_10M;
1074 port->full_duplex = 0;
1077 port->port_speed = EHEA_SPEED_10M;
1078 port->full_duplex = 1;
1080 case H_SPEED_100M_H:
1081 port->port_speed = EHEA_SPEED_100M;
1082 port->full_duplex = 0;
1084 case H_SPEED_100M_F:
1085 port->port_speed = EHEA_SPEED_100M;
1086 port->full_duplex = 1;
1089 port->port_speed = EHEA_SPEED_1G;
1090 port->full_duplex = 1;
1093 port->port_speed = EHEA_SPEED_10G;
1094 port->full_duplex = 1;
1097 port->port_speed = 0;
1098 port->full_duplex = 0;
1103 port->num_mcs = cb0->num_default_qps;
1105 /* Number of default QPs */
1107 port->num_def_qps = cb0->num_default_qps;
1109 port->num_def_qps = 1;
1111 if (!port->num_def_qps) {
1116 port->num_tx_qps = num_tx_qps;
1118 if (port->num_def_qps >= port->num_tx_qps)
1119 port->num_add_tx_qps = 0;
1121 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
1125 if (ret || netif_msg_probe(port))
1126 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
1127 free_page((unsigned long)cb0);
1132 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1134 struct hcp_ehea_port_cb4 *cb4;
1138 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
1140 pr_err("no mem for cb4\n");
1145 cb4->port_speed = port_speed;
1147 netif_carrier_off(port->netdev);
1149 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1150 port->logical_port_id,
1151 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1152 if (hret == H_SUCCESS) {
1153 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1155 hret = ehea_h_query_ehea_port(port->adapter->handle,
1156 port->logical_port_id,
1157 H_PORT_CB4, H_PORT_CB4_SPEED,
1159 if (hret == H_SUCCESS) {
1160 switch (cb4->port_speed) {
1162 port->port_speed = EHEA_SPEED_10M;
1163 port->full_duplex = 0;
1166 port->port_speed = EHEA_SPEED_10M;
1167 port->full_duplex = 1;
1169 case H_SPEED_100M_H:
1170 port->port_speed = EHEA_SPEED_100M;
1171 port->full_duplex = 0;
1173 case H_SPEED_100M_F:
1174 port->port_speed = EHEA_SPEED_100M;
1175 port->full_duplex = 1;
1178 port->port_speed = EHEA_SPEED_1G;
1179 port->full_duplex = 1;
1182 port->port_speed = EHEA_SPEED_10G;
1183 port->full_duplex = 1;
1186 port->port_speed = 0;
1187 port->full_duplex = 0;
1191 pr_err("Failed sensing port speed\n");
1195 if (hret == H_AUTHORITY) {
1196 pr_info("Hypervisor denied setting port speed\n");
1200 pr_err("Failed setting port speed\n");
1203 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1204 netif_carrier_on(port->netdev);
1206 free_page((unsigned long)cb4);
1211 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1216 struct ehea_port *port;
1217 struct net_device *dev;
1219 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1220 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1221 port = ehea_get_port(adapter, portnum);
1225 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1228 netdev_err(dev, "unknown portnum %x\n", portnum);
1232 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1233 if (!netif_carrier_ok(dev)) {
1234 ret = ehea_sense_port_attr(port);
1236 netdev_err(dev, "failed resensing port attributes\n");
1240 netif_info(port, link, dev,
1241 "Logical port up: %dMbps %s Duplex\n",
1243 port->full_duplex == 1 ?
1246 netif_carrier_on(dev);
1247 netif_wake_queue(dev);
1250 if (netif_carrier_ok(dev)) {
1251 netif_info(port, link, dev,
1252 "Logical port down\n");
1253 netif_carrier_off(dev);
1254 netif_stop_queue(dev);
1257 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1258 port->phy_link = EHEA_PHY_LINK_UP;
1259 netif_info(port, link, dev,
1260 "Physical port up\n");
1261 if (prop_carrier_state)
1262 netif_carrier_on(dev);
1264 port->phy_link = EHEA_PHY_LINK_DOWN;
1265 netif_info(port, link, dev,
1266 "Physical port down\n");
1267 if (prop_carrier_state)
1268 netif_carrier_off(dev);
1271 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1273 "External switch port is primary port\n");
1276 "External switch port is backup port\n");
1279 case EHEA_EC_ADAPTER_MALFUNC:
1280 netdev_err(dev, "Adapter malfunction\n");
1282 case EHEA_EC_PORT_MALFUNC:
1283 netdev_info(dev, "Port malfunction\n");
1284 netif_carrier_off(dev);
1285 netif_stop_queue(dev);
1288 netdev_err(dev, "unknown event code %x, eqe=0x%llX\n", ec, eqe);
1293 static void ehea_neq_tasklet(unsigned long data)
1295 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1296 struct ehea_eqe *eqe;
1299 eqe = ehea_poll_eq(adapter->neq);
1300 pr_debug("eqe=%p\n", eqe);
1303 pr_debug("*eqe=%lx\n", (unsigned long) eqe->entry);
1304 ehea_parse_eqe(adapter, eqe->entry);
1305 eqe = ehea_poll_eq(adapter->neq);
1306 pr_debug("next eqe=%p\n", eqe);
1309 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1310 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1311 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1313 ehea_h_reset_events(adapter->handle,
1314 adapter->neq->fw_handle, event_mask);
1317 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1319 struct ehea_adapter *adapter = param;
1320 tasklet_hi_schedule(&adapter->neq_tasklet);
1325 static int ehea_fill_port_res(struct ehea_port_res *pr)
1328 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1330 ehea_init_fill_rq1(pr, pr->rq1_skba.len);
1332 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1334 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1339 static int ehea_reg_interrupts(struct net_device *dev)
1341 struct ehea_port *port = netdev_priv(dev);
1342 struct ehea_port_res *pr;
1346 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1349 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1350 ehea_qp_aff_irq_handler,
1351 IRQF_DISABLED, port->int_aff_name, port);
1353 netdev_err(dev, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1354 port->qp_eq->attr.ist1);
1358 netif_info(port, ifup, dev,
1359 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1360 port->qp_eq->attr.ist1);
1363 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1364 pr = &port->port_res[i];
1365 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1366 "%s-queue%d", dev->name, i);
1367 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1368 ehea_recv_irq_handler,
1369 IRQF_DISABLED, pr->int_send_name,
1372 netdev_err(dev, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1373 i, pr->eq->attr.ist1);
1376 netif_info(port, ifup, dev,
1377 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1378 pr->eq->attr.ist1, i);
1386 u32 ist = port->port_res[i].eq->attr.ist1;
1387 ibmebus_free_irq(ist, &port->port_res[i]);
1391 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1392 i = port->num_def_qps;
1398 static void ehea_free_interrupts(struct net_device *dev)
1400 struct ehea_port *port = netdev_priv(dev);
1401 struct ehea_port_res *pr;
1406 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1407 pr = &port->port_res[i];
1408 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1409 netif_info(port, intr, dev,
1410 "free send irq for res %d with handle 0x%X\n",
1411 i, pr->eq->attr.ist1);
1414 /* associated events */
1415 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1416 netif_info(port, intr, dev,
1417 "associated event interrupt for handle 0x%X freed\n",
1418 port->qp_eq->attr.ist1);
1421 static int ehea_configure_port(struct ehea_port *port)
1425 struct hcp_ehea_port_cb0 *cb0;
1428 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1432 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1433 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1434 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1435 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1436 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1437 PXLY_RC_VLAN_FILTER)
1438 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1440 for (i = 0; i < port->num_mcs; i++)
1442 cb0->default_qpn_arr[i] =
1443 port->port_res[i].qp->init_attr.qp_nr;
1445 cb0->default_qpn_arr[i] =
1446 port->port_res[0].qp->init_attr.qp_nr;
1448 if (netif_msg_ifup(port))
1449 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1451 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1452 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1454 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1455 port->logical_port_id,
1456 H_PORT_CB0, mask, cb0);
1458 if (hret != H_SUCCESS)
1464 free_page((unsigned long)cb0);
1469 int ehea_gen_smrs(struct ehea_port_res *pr)
1472 struct ehea_adapter *adapter = pr->port->adapter;
1474 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1478 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1485 ehea_rem_mr(&pr->send_mr);
1487 pr_err("Generating SMRS failed\n");
1491 int ehea_rem_smrs(struct ehea_port_res *pr)
1493 if ((ehea_rem_mr(&pr->send_mr)) ||
1494 (ehea_rem_mr(&pr->recv_mr)))
1500 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1502 int arr_size = sizeof(void *) * max_q_entries;
1504 q_skba->arr = vzalloc(arr_size);
1508 q_skba->len = max_q_entries;
1510 q_skba->os_skbs = 0;
1515 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1516 struct port_res_cfg *pr_cfg, int queue_token)
1518 struct ehea_adapter *adapter = port->adapter;
1519 enum ehea_eq_type eq_type = EHEA_EQ;
1520 struct ehea_qp_init_attr *init_attr = NULL;
1522 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1524 tx_bytes = pr->tx_bytes;
1525 tx_packets = pr->tx_packets;
1526 rx_bytes = pr->rx_bytes;
1527 rx_packets = pr->rx_packets;
1529 memset(pr, 0, sizeof(struct ehea_port_res));
1531 pr->tx_bytes = rx_bytes;
1532 pr->tx_packets = tx_packets;
1533 pr->rx_bytes = rx_bytes;
1534 pr->rx_packets = rx_packets;
1537 spin_lock_init(&pr->xmit_lock);
1538 spin_lock_init(&pr->netif_queue);
1540 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1542 pr_err("create_eq failed (eq)\n");
1546 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1548 port->logical_port_id);
1550 pr_err("create_cq failed (cq_recv)\n");
1554 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1556 port->logical_port_id);
1558 pr_err("create_cq failed (cq_send)\n");
1562 if (netif_msg_ifup(port))
1563 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1564 pr->send_cq->attr.act_nr_of_cqes,
1565 pr->recv_cq->attr.act_nr_of_cqes);
1567 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1570 pr_err("no mem for ehea_qp_init_attr\n");
1574 init_attr->low_lat_rq1 = 1;
1575 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1576 init_attr->rq_count = 3;
1577 init_attr->qp_token = queue_token;
1578 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1579 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1580 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1581 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1582 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1583 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1584 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1585 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1586 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1587 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1588 init_attr->port_nr = port->logical_port_id;
1589 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1590 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1591 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1593 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1595 pr_err("create_qp failed\n");
1600 if (netif_msg_ifup(port))
1601 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",
1603 init_attr->act_nr_send_wqes,
1604 init_attr->act_nr_rwqes_rq1,
1605 init_attr->act_nr_rwqes_rq2,
1606 init_attr->act_nr_rwqes_rq3);
1608 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1610 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1611 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1612 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1613 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1617 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1618 if (ehea_gen_smrs(pr) != 0) {
1623 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1627 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1629 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1630 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1631 pr->lro_mgr.lro_arr = pr->lro_desc;
1632 pr->lro_mgr.get_skb_header = get_skb_hdr;
1633 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1634 pr->lro_mgr.dev = port->netdev;
1635 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1636 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1643 vfree(pr->sq_skba.arr);
1644 vfree(pr->rq1_skba.arr);
1645 vfree(pr->rq2_skba.arr);
1646 vfree(pr->rq3_skba.arr);
1647 ehea_destroy_qp(pr->qp);
1648 ehea_destroy_cq(pr->send_cq);
1649 ehea_destroy_cq(pr->recv_cq);
1650 ehea_destroy_eq(pr->eq);
1655 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1660 netif_napi_del(&pr->napi);
1662 ret = ehea_destroy_qp(pr->qp);
1665 ehea_destroy_cq(pr->send_cq);
1666 ehea_destroy_cq(pr->recv_cq);
1667 ehea_destroy_eq(pr->eq);
1669 for (i = 0; i < pr->rq1_skba.len; i++)
1670 if (pr->rq1_skba.arr[i])
1671 dev_kfree_skb(pr->rq1_skba.arr[i]);
1673 for (i = 0; i < pr->rq2_skba.len; i++)
1674 if (pr->rq2_skba.arr[i])
1675 dev_kfree_skb(pr->rq2_skba.arr[i]);
1677 for (i = 0; i < pr->rq3_skba.len; i++)
1678 if (pr->rq3_skba.arr[i])
1679 dev_kfree_skb(pr->rq3_skba.arr[i]);
1681 for (i = 0; i < pr->sq_skba.len; i++)
1682 if (pr->sq_skba.arr[i])
1683 dev_kfree_skb(pr->sq_skba.arr[i]);
1685 vfree(pr->rq1_skba.arr);
1686 vfree(pr->rq2_skba.arr);
1687 vfree(pr->rq3_skba.arr);
1688 vfree(pr->sq_skba.arr);
1689 ret = ehea_rem_smrs(pr);
1695 * The write_* functions store information in swqe which is used by
1696 * the hardware to calculate the ip/tcp/udp checksum
1699 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1700 const struct sk_buff *skb)
1702 swqe->ip_start = skb_network_offset(skb);
1703 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1706 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1707 const struct sk_buff *skb)
1710 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1712 swqe->tcp_end = (u16)skb->len - 1;
1715 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1716 const struct sk_buff *skb)
1719 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1721 swqe->tcp_end = (u16)skb->len - 1;
1725 static void write_swqe2_TSO(struct sk_buff *skb,
1726 struct ehea_swqe *swqe, u32 lkey)
1728 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1729 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1730 int skb_data_size = skb_headlen(skb);
1733 /* Packet is TCP with TSO enabled */
1734 swqe->tx_control |= EHEA_SWQE_TSO;
1735 swqe->mss = skb_shinfo(skb)->gso_size;
1736 /* copy only eth/ip/tcp headers to immediate data and
1737 * the rest of skb->data to sg1entry
1739 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1741 skb_data_size = skb_headlen(skb);
1743 if (skb_data_size >= headersize) {
1744 /* copy immediate data */
1745 skb_copy_from_linear_data(skb, imm_data, headersize);
1746 swqe->immediate_data_length = headersize;
1748 if (skb_data_size > headersize) {
1749 /* set sg1entry data */
1750 sg1entry->l_key = lkey;
1751 sg1entry->len = skb_data_size - headersize;
1753 ehea_map_vaddr(skb->data + headersize);
1754 swqe->descriptors++;
1757 pr_err("cannot handle fragmented headers\n");
1760 static void write_swqe2_nonTSO(struct sk_buff *skb,
1761 struct ehea_swqe *swqe, u32 lkey)
1763 int skb_data_size = skb_headlen(skb);
1764 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1765 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1767 /* Packet is any nonTSO type
1769 * Copy as much as possible skb->data to immediate data and
1770 * the rest to sg1entry
1772 if (skb_data_size >= SWQE2_MAX_IMM) {
1773 /* copy immediate data */
1774 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1776 swqe->immediate_data_length = SWQE2_MAX_IMM;
1778 if (skb_data_size > SWQE2_MAX_IMM) {
1779 /* copy sg1entry data */
1780 sg1entry->l_key = lkey;
1781 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1783 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1784 swqe->descriptors++;
1787 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1788 swqe->immediate_data_length = skb_data_size;
1792 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1793 struct ehea_swqe *swqe, u32 lkey)
1795 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1797 int nfrags, sg1entry_contains_frag_data, i;
1799 nfrags = skb_shinfo(skb)->nr_frags;
1800 sg1entry = &swqe->u.immdata_desc.sg_entry;
1801 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1802 swqe->descriptors = 0;
1803 sg1entry_contains_frag_data = 0;
1805 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1806 write_swqe2_TSO(skb, swqe, lkey);
1808 write_swqe2_nonTSO(skb, swqe, lkey);
1810 /* write descriptors */
1812 if (swqe->descriptors == 0) {
1813 /* sg1entry not yet used */
1814 frag = &skb_shinfo(skb)->frags[0];
1816 /* copy sg1entry data */
1817 sg1entry->l_key = lkey;
1818 sg1entry->len = frag->size;
1820 ehea_map_vaddr(skb_frag_address(frag));
1821 swqe->descriptors++;
1822 sg1entry_contains_frag_data = 1;
1825 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1827 frag = &skb_shinfo(skb)->frags[i];
1828 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1830 sgentry->l_key = lkey;
1831 sgentry->len = frag->size;
1832 sgentry->vaddr = ehea_map_vaddr(skb_frag_address(frag));
1833 swqe->descriptors++;
1838 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1844 /* De/Register untagged packets */
1845 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1846 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1847 port->logical_port_id,
1848 reg_type, port->mac_addr, 0, hcallid);
1849 if (hret != H_SUCCESS) {
1850 pr_err("%sregistering bc address failed (tagged)\n",
1851 hcallid == H_REG_BCMC ? "" : "de");
1856 /* De/Register VLAN packets */
1857 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1858 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1859 port->logical_port_id,
1860 reg_type, port->mac_addr, 0, hcallid);
1861 if (hret != H_SUCCESS) {
1862 pr_err("%sregistering bc address failed (vlan)\n",
1863 hcallid == H_REG_BCMC ? "" : "de");
1870 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1872 struct ehea_port *port = netdev_priv(dev);
1873 struct sockaddr *mac_addr = sa;
1874 struct hcp_ehea_port_cb0 *cb0;
1878 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1879 ret = -EADDRNOTAVAIL;
1883 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1885 pr_err("no mem for cb0\n");
1890 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1892 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1894 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1895 port->logical_port_id, H_PORT_CB0,
1896 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1897 if (hret != H_SUCCESS) {
1902 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1904 /* Deregister old MAC in pHYP */
1905 if (port->state == EHEA_PORT_UP) {
1906 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1911 port->mac_addr = cb0->port_mac_addr << 16;
1913 /* Register new MAC in pHYP */
1914 if (port->state == EHEA_PORT_UP) {
1915 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1923 ehea_update_bcmc_registrations();
1925 free_page((unsigned long)cb0);
1930 static void ehea_promiscuous_error(u64 hret, int enable)
1932 if (hret == H_AUTHORITY)
1933 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1934 enable == 1 ? "en" : "dis");
1936 pr_err("failed %sabling promiscuous mode\n",
1937 enable == 1 ? "en" : "dis");
1940 static void ehea_promiscuous(struct net_device *dev, int enable)
1942 struct ehea_port *port = netdev_priv(dev);
1943 struct hcp_ehea_port_cb7 *cb7;
1946 if (enable == port->promisc)
1949 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
1951 pr_err("no mem for cb7\n");
1955 /* Modify Pxs_DUCQPN in CB7 */
1956 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1958 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1959 port->logical_port_id,
1960 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1962 ehea_promiscuous_error(hret, enable);
1966 port->promisc = enable;
1968 free_page((unsigned long)cb7);
1971 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1977 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1978 | EHEA_BCMC_UNTAGGED;
1980 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1981 port->logical_port_id,
1982 reg_type, mc_mac_addr, 0, hcallid);
1986 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1987 | EHEA_BCMC_VLANID_ALL;
1989 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1990 port->logical_port_id,
1991 reg_type, mc_mac_addr, 0, hcallid);
1996 static int ehea_drop_multicast_list(struct net_device *dev)
1998 struct ehea_port *port = netdev_priv(dev);
1999 struct ehea_mc_list *mc_entry = port->mc_list;
2000 struct list_head *pos;
2001 struct list_head *temp;
2005 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
2006 mc_entry = list_entry(pos, struct ehea_mc_list, list);
2008 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
2011 pr_err("failed deregistering mcast MAC\n");
2021 static void ehea_allmulti(struct net_device *dev, int enable)
2023 struct ehea_port *port = netdev_priv(dev);
2026 if (!port->allmulti) {
2028 /* Enable ALLMULTI */
2029 ehea_drop_multicast_list(dev);
2030 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2035 "failed enabling IFF_ALLMULTI\n");
2039 /* Disable ALLMULTI */
2040 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2045 "failed disabling IFF_ALLMULTI\n");
2049 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
2051 struct ehea_mc_list *ehea_mcl_entry;
2054 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
2055 if (!ehea_mcl_entry) {
2056 pr_err("no mem for mcl_entry\n");
2060 INIT_LIST_HEAD(&ehea_mcl_entry->list);
2062 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2064 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2067 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2069 pr_err("failed registering mcast MAC\n");
2070 kfree(ehea_mcl_entry);
2074 static void ehea_set_multicast_list(struct net_device *dev)
2076 struct ehea_port *port = netdev_priv(dev);
2077 struct netdev_hw_addr *ha;
2080 if (port->promisc) {
2081 ehea_promiscuous(dev, 1);
2084 ehea_promiscuous(dev, 0);
2086 if (dev->flags & IFF_ALLMULTI) {
2087 ehea_allmulti(dev, 1);
2090 ehea_allmulti(dev, 0);
2092 if (!netdev_mc_empty(dev)) {
2093 ret = ehea_drop_multicast_list(dev);
2095 /* Dropping the current multicast list failed.
2096 * Enabling ALL_MULTI is the best we can do.
2098 ehea_allmulti(dev, 1);
2101 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
2102 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
2103 port->adapter->max_mc_mac);
2107 netdev_for_each_mc_addr(ha, dev)
2108 ehea_add_multicast_entry(port, ha->addr);
2112 ehea_update_bcmc_registrations();
2115 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2117 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2123 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2124 struct ehea_swqe *swqe, u32 lkey)
2126 if (skb->protocol == htons(ETH_P_IP)) {
2127 const struct iphdr *iph = ip_hdr(skb);
2130 swqe->tx_control |= EHEA_SWQE_CRC
2131 | EHEA_SWQE_IP_CHECKSUM
2132 | EHEA_SWQE_TCP_CHECKSUM
2133 | EHEA_SWQE_IMM_DATA_PRESENT
2134 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2136 write_ip_start_end(swqe, skb);
2138 if (iph->protocol == IPPROTO_UDP) {
2139 if ((iph->frag_off & IP_MF) ||
2140 (iph->frag_off & IP_OFFSET))
2141 /* IP fragment, so don't change cs */
2142 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2144 write_udp_offset_end(swqe, skb);
2145 } else if (iph->protocol == IPPROTO_TCP) {
2146 write_tcp_offset_end(swqe, skb);
2149 /* icmp (big data) and ip segmentation packets (all other ip
2150 packets) do not require any special handling */
2153 /* Other Ethernet Protocol */
2154 swqe->tx_control |= EHEA_SWQE_CRC
2155 | EHEA_SWQE_IMM_DATA_PRESENT
2156 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2159 write_swqe2_data(skb, dev, swqe, lkey);
2162 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2163 struct ehea_swqe *swqe)
2165 int nfrags = skb_shinfo(skb)->nr_frags;
2166 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2170 if (skb->protocol == htons(ETH_P_IP)) {
2171 const struct iphdr *iph = ip_hdr(skb);
2174 write_ip_start_end(swqe, skb);
2176 if (iph->protocol == IPPROTO_TCP) {
2177 swqe->tx_control |= EHEA_SWQE_CRC
2178 | EHEA_SWQE_IP_CHECKSUM
2179 | EHEA_SWQE_TCP_CHECKSUM
2180 | EHEA_SWQE_IMM_DATA_PRESENT;
2182 write_tcp_offset_end(swqe, skb);
2184 } else if (iph->protocol == IPPROTO_UDP) {
2185 if ((iph->frag_off & IP_MF) ||
2186 (iph->frag_off & IP_OFFSET))
2187 /* IP fragment, so don't change cs */
2188 swqe->tx_control |= EHEA_SWQE_CRC
2189 | EHEA_SWQE_IMM_DATA_PRESENT;
2191 swqe->tx_control |= EHEA_SWQE_CRC
2192 | EHEA_SWQE_IP_CHECKSUM
2193 | EHEA_SWQE_TCP_CHECKSUM
2194 | EHEA_SWQE_IMM_DATA_PRESENT;
2196 write_udp_offset_end(swqe, skb);
2199 /* icmp (big data) and
2200 ip segmentation packets (all other ip packets) */
2201 swqe->tx_control |= EHEA_SWQE_CRC
2202 | EHEA_SWQE_IP_CHECKSUM
2203 | EHEA_SWQE_IMM_DATA_PRESENT;
2206 /* Other Ethernet Protocol */
2207 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2209 /* copy (immediate) data */
2211 /* data is in a single piece */
2212 skb_copy_from_linear_data(skb, imm_data, skb->len);
2214 /* first copy data from the skb->data buffer ... */
2215 skb_copy_from_linear_data(skb, imm_data,
2217 imm_data += skb_headlen(skb);
2219 /* ... then copy data from the fragments */
2220 for (i = 0; i < nfrags; i++) {
2221 frag = &skb_shinfo(skb)->frags[i];
2222 memcpy(imm_data, skb_frag_address(frag), frag->size);
2223 imm_data += frag->size;
2226 swqe->immediate_data_length = skb->len;
2230 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2235 if ((skb->protocol == htons(ETH_P_IP)) &&
2236 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2237 tcp = (struct tcphdr *)(skb_network_header(skb) +
2238 (ip_hdr(skb)->ihl * 4));
2239 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2240 tmp += ip_hdr(skb)->daddr % 31;
2241 return tmp % num_qps;
2246 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2248 struct ehea_port *port = netdev_priv(dev);
2249 struct ehea_swqe *swqe;
2250 unsigned long flags;
2253 struct ehea_port_res *pr;
2255 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2257 if (!spin_trylock(&pr->xmit_lock))
2258 return NETDEV_TX_BUSY;
2260 if (pr->queue_stopped) {
2261 spin_unlock(&pr->xmit_lock);
2262 return NETDEV_TX_BUSY;
2265 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2266 memset(swqe, 0, SWQE_HEADER_SIZE);
2267 atomic_dec(&pr->swqe_avail);
2269 if (vlan_tx_tag_present(skb)) {
2270 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2271 swqe->vlan_tag = vlan_tx_tag_get(skb);
2275 pr->tx_bytes += skb->len;
2277 if (skb->len <= SWQE3_MAX_IMM) {
2278 u32 sig_iv = port->sig_comp_iv;
2279 u32 swqe_num = pr->swqe_id_counter;
2280 ehea_xmit3(skb, dev, swqe);
2281 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2282 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2283 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2284 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2286 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2287 pr->swqe_ll_count = 0;
2289 pr->swqe_ll_count += 1;
2292 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2293 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2294 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2295 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2296 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2298 pr->sq_skba.index++;
2299 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2301 lkey = pr->send_mr.lkey;
2302 ehea_xmit2(skb, dev, swqe, lkey);
2303 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2305 pr->swqe_id_counter += 1;
2307 netif_info(port, tx_queued, dev,
2308 "post swqe on QP %d\n", pr->qp->init_attr.qp_nr);
2309 if (netif_msg_tx_queued(port))
2310 ehea_dump(swqe, 512, "swqe");
2312 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2313 netif_stop_queue(dev);
2314 swqe->tx_control |= EHEA_SWQE_PURGE;
2317 ehea_post_swqe(pr->qp, swqe);
2319 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2320 spin_lock_irqsave(&pr->netif_queue, flags);
2321 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2322 pr->p_stats.queue_stopped++;
2323 netif_stop_queue(dev);
2324 pr->queue_stopped = 1;
2326 spin_unlock_irqrestore(&pr->netif_queue, flags);
2328 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
2329 spin_unlock(&pr->xmit_lock);
2331 return NETDEV_TX_OK;
2334 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2336 struct ehea_port *port = netdev_priv(dev);
2337 struct ehea_adapter *adapter = port->adapter;
2338 struct hcp_ehea_port_cb1 *cb1;
2342 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2344 pr_err("no mem for cb1\n");
2348 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2349 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2350 if (hret != H_SUCCESS) {
2351 pr_err("query_ehea_port failed\n");
2356 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2358 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2359 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2360 if (hret != H_SUCCESS)
2361 pr_err("modify_ehea_port failed\n");
2363 free_page((unsigned long)cb1);
2367 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2369 struct ehea_port *port = netdev_priv(dev);
2370 struct ehea_adapter *adapter = port->adapter;
2371 struct hcp_ehea_port_cb1 *cb1;
2375 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2377 pr_err("no mem for cb1\n");
2381 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2382 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2383 if (hret != H_SUCCESS) {
2384 pr_err("query_ehea_port failed\n");
2389 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2391 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2392 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2393 if (hret != H_SUCCESS)
2394 pr_err("modify_ehea_port failed\n");
2396 free_page((unsigned long)cb1);
2399 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2405 struct hcp_modify_qp_cb0 *cb0;
2407 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2413 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2414 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2415 if (hret != H_SUCCESS) {
2416 pr_err("query_ehea_qp failed (1)\n");
2420 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2421 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2422 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2423 &dummy64, &dummy64, &dummy16, &dummy16);
2424 if (hret != H_SUCCESS) {
2425 pr_err("modify_ehea_qp failed (1)\n");
2429 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2430 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2431 if (hret != H_SUCCESS) {
2432 pr_err("query_ehea_qp failed (2)\n");
2436 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2437 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2438 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2439 &dummy64, &dummy64, &dummy16, &dummy16);
2440 if (hret != H_SUCCESS) {
2441 pr_err("modify_ehea_qp failed (2)\n");
2445 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2446 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2447 if (hret != H_SUCCESS) {
2448 pr_err("query_ehea_qp failed (3)\n");
2452 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2453 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2454 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2455 &dummy64, &dummy64, &dummy16, &dummy16);
2456 if (hret != H_SUCCESS) {
2457 pr_err("modify_ehea_qp failed (3)\n");
2461 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2462 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2463 if (hret != H_SUCCESS) {
2464 pr_err("query_ehea_qp failed (4)\n");
2470 free_page((unsigned long)cb0);
2474 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2478 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2479 enum ehea_eq_type eq_type = EHEA_EQ;
2481 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2482 EHEA_MAX_ENTRIES_EQ, 1);
2485 pr_err("ehea_create_eq failed (qp_eq)\n");
2489 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2490 pr_cfg.max_entries_scq = sq_entries * 2;
2491 pr_cfg.max_entries_sq = sq_entries;
2492 pr_cfg.max_entries_rq1 = rq1_entries;
2493 pr_cfg.max_entries_rq2 = rq2_entries;
2494 pr_cfg.max_entries_rq3 = rq3_entries;
2496 pr_cfg_small_rx.max_entries_rcq = 1;
2497 pr_cfg_small_rx.max_entries_scq = sq_entries;
2498 pr_cfg_small_rx.max_entries_sq = sq_entries;
2499 pr_cfg_small_rx.max_entries_rq1 = 1;
2500 pr_cfg_small_rx.max_entries_rq2 = 1;
2501 pr_cfg_small_rx.max_entries_rq3 = 1;
2503 for (i = 0; i < def_qps; i++) {
2504 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2508 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2509 ret = ehea_init_port_res(port, &port->port_res[i],
2510 &pr_cfg_small_rx, i);
2519 ehea_clean_portres(port, &port->port_res[i]);
2522 ehea_destroy_eq(port->qp_eq);
2526 static int ehea_clean_all_portres(struct ehea_port *port)
2531 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2532 ret |= ehea_clean_portres(port, &port->port_res[i]);
2534 ret |= ehea_destroy_eq(port->qp_eq);
2539 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2541 if (adapter->active_ports)
2544 ehea_rem_mr(&adapter->mr);
2547 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2549 if (adapter->active_ports)
2552 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2555 static int ehea_up(struct net_device *dev)
2558 struct ehea_port *port = netdev_priv(dev);
2560 if (port->state == EHEA_PORT_UP)
2563 ret = ehea_port_res_setup(port, port->num_def_qps,
2564 port->num_add_tx_qps);
2566 netdev_err(dev, "port_res_failed\n");
2570 /* Set default QP for this port */
2571 ret = ehea_configure_port(port);
2573 netdev_err(dev, "ehea_configure_port failed. ret:%d\n", ret);
2577 ret = ehea_reg_interrupts(dev);
2579 netdev_err(dev, "reg_interrupts failed. ret:%d\n", ret);
2583 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2584 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2586 netdev_err(dev, "activate_qp failed\n");
2591 for (i = 0; i < port->num_def_qps; i++) {
2592 ret = ehea_fill_port_res(&port->port_res[i]);
2594 netdev_err(dev, "out_free_irqs\n");
2599 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2605 port->state = EHEA_PORT_UP;
2611 ehea_free_interrupts(dev);
2614 ehea_clean_all_portres(port);
2617 netdev_info(dev, "Failed starting. ret=%i\n", ret);
2619 ehea_update_bcmc_registrations();
2620 ehea_update_firmware_handles();
2625 static void port_napi_disable(struct ehea_port *port)
2629 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2630 napi_disable(&port->port_res[i].napi);
2633 static void port_napi_enable(struct ehea_port *port)
2637 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2638 napi_enable(&port->port_res[i].napi);
2641 static int ehea_open(struct net_device *dev)
2644 struct ehea_port *port = netdev_priv(dev);
2646 mutex_lock(&port->port_lock);
2648 netif_info(port, ifup, dev, "enabling port\n");
2652 port_napi_enable(port);
2653 netif_start_queue(dev);
2656 mutex_unlock(&port->port_lock);
2657 schedule_delayed_work(&port->stats_work, msecs_to_jiffies(1000));
2662 static int ehea_down(struct net_device *dev)
2665 struct ehea_port *port = netdev_priv(dev);
2667 if (port->state == EHEA_PORT_DOWN)
2670 ehea_drop_multicast_list(dev);
2671 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2673 ehea_free_interrupts(dev);
2675 port->state = EHEA_PORT_DOWN;
2677 ehea_update_bcmc_registrations();
2679 ret = ehea_clean_all_portres(port);
2681 netdev_info(dev, "Failed freeing resources. ret=%i\n", ret);
2683 ehea_update_firmware_handles();
2688 static int ehea_stop(struct net_device *dev)
2691 struct ehea_port *port = netdev_priv(dev);
2693 netif_info(port, ifdown, dev, "disabling port\n");
2695 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2696 cancel_work_sync(&port->reset_task);
2697 cancel_delayed_work_sync(&port->stats_work);
2698 mutex_lock(&port->port_lock);
2699 netif_stop_queue(dev);
2700 port_napi_disable(port);
2701 ret = ehea_down(dev);
2702 mutex_unlock(&port->port_lock);
2703 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2707 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2709 struct ehea_qp qp = *orig_qp;
2710 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2711 struct ehea_swqe *swqe;
2715 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2716 swqe = ehea_get_swqe(&qp, &wqe_index);
2717 swqe->tx_control |= EHEA_SWQE_PURGE;
2721 static void ehea_flush_sq(struct ehea_port *port)
2725 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2726 struct ehea_port_res *pr = &port->port_res[i];
2727 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2730 ret = wait_event_timeout(port->swqe_avail_wq,
2731 atomic_read(&pr->swqe_avail) >= swqe_max,
2732 msecs_to_jiffies(100));
2735 pr_err("WARNING: sq not flushed completely\n");
2741 int ehea_stop_qps(struct net_device *dev)
2743 struct ehea_port *port = netdev_priv(dev);
2744 struct ehea_adapter *adapter = port->adapter;
2745 struct hcp_modify_qp_cb0 *cb0;
2753 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2759 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2760 struct ehea_port_res *pr = &port->port_res[i];
2761 struct ehea_qp *qp = pr->qp;
2763 /* Purge send queue */
2766 /* Disable queue pair */
2767 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2768 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2770 if (hret != H_SUCCESS) {
2771 pr_err("query_ehea_qp failed (1)\n");
2775 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2776 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2778 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2779 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2781 &dummy64, &dummy16, &dummy16);
2782 if (hret != H_SUCCESS) {
2783 pr_err("modify_ehea_qp failed (1)\n");
2787 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2788 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2790 if (hret != H_SUCCESS) {
2791 pr_err("query_ehea_qp failed (2)\n");
2795 /* deregister shared memory regions */
2796 dret = ehea_rem_smrs(pr);
2798 pr_err("unreg shared memory region failed\n");
2805 free_page((unsigned long)cb0);
2810 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2812 struct ehea_qp qp = *orig_qp;
2813 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2814 struct ehea_rwqe *rwqe;
2815 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2816 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2817 struct sk_buff *skb;
2818 u32 lkey = pr->recv_mr.lkey;
2824 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2825 rwqe = ehea_get_next_rwqe(&qp, 2);
2826 rwqe->sg_list[0].l_key = lkey;
2827 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2828 skb = skba_rq2[index];
2830 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2833 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2834 rwqe = ehea_get_next_rwqe(&qp, 3);
2835 rwqe->sg_list[0].l_key = lkey;
2836 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2837 skb = skba_rq3[index];
2839 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2843 int ehea_restart_qps(struct net_device *dev)
2845 struct ehea_port *port = netdev_priv(dev);
2846 struct ehea_adapter *adapter = port->adapter;
2850 struct hcp_modify_qp_cb0 *cb0;
2855 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2861 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2862 struct ehea_port_res *pr = &port->port_res[i];
2863 struct ehea_qp *qp = pr->qp;
2865 ret = ehea_gen_smrs(pr);
2867 netdev_err(dev, "creation of shared memory regions failed\n");
2871 ehea_update_rqs(qp, pr);
2873 /* Enable queue pair */
2874 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2875 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2877 if (hret != H_SUCCESS) {
2878 netdev_err(dev, "query_ehea_qp failed (1)\n");
2882 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2883 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2885 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2886 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2888 &dummy64, &dummy16, &dummy16);
2889 if (hret != H_SUCCESS) {
2890 netdev_err(dev, "modify_ehea_qp failed (1)\n");
2894 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2895 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2897 if (hret != H_SUCCESS) {
2898 netdev_err(dev, "query_ehea_qp failed (2)\n");
2902 /* refill entire queue */
2903 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2904 ehea_refill_rq2(pr, 0);
2905 ehea_refill_rq3(pr, 0);
2908 free_page((unsigned long)cb0);
2913 static void ehea_reset_port(struct work_struct *work)
2916 struct ehea_port *port =
2917 container_of(work, struct ehea_port, reset_task);
2918 struct net_device *dev = port->netdev;
2920 mutex_lock(&dlpar_mem_lock);
2922 mutex_lock(&port->port_lock);
2923 netif_stop_queue(dev);
2925 port_napi_disable(port);
2933 ehea_set_multicast_list(dev);
2935 netif_info(port, timer, dev, "reset successful\n");
2937 port_napi_enable(port);
2939 netif_wake_queue(dev);
2941 mutex_unlock(&port->port_lock);
2942 mutex_unlock(&dlpar_mem_lock);
2945 static void ehea_rereg_mrs(void)
2948 struct ehea_adapter *adapter;
2950 pr_info("LPAR memory changed - re-initializing driver\n");
2952 list_for_each_entry(adapter, &adapter_list, list)
2953 if (adapter->active_ports) {
2954 /* Shutdown all ports */
2955 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2956 struct ehea_port *port = adapter->port[i];
2957 struct net_device *dev;
2964 if (dev->flags & IFF_UP) {
2965 mutex_lock(&port->port_lock);
2966 netif_stop_queue(dev);
2967 ehea_flush_sq(port);
2968 ret = ehea_stop_qps(dev);
2970 mutex_unlock(&port->port_lock);
2973 port_napi_disable(port);
2974 mutex_unlock(&port->port_lock);
2976 reset_sq_restart_flag(port);
2979 /* Unregister old memory region */
2980 ret = ehea_rem_mr(&adapter->mr);
2982 pr_err("unregister MR failed - driver inoperable!\n");
2987 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2989 list_for_each_entry(adapter, &adapter_list, list)
2990 if (adapter->active_ports) {
2991 /* Register new memory region */
2992 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2994 pr_err("register MR failed - driver inoperable!\n");
2998 /* Restart all ports */
2999 for (i = 0; i < EHEA_MAX_PORTS; i++) {
3000 struct ehea_port *port = adapter->port[i];
3003 struct net_device *dev = port->netdev;
3005 if (dev->flags & IFF_UP) {
3006 mutex_lock(&port->port_lock);
3007 ret = ehea_restart_qps(dev);
3010 port_napi_enable(port);
3011 netif_wake_queue(dev);
3013 netdev_err(dev, "Unable to restart QPS\n");
3015 mutex_unlock(&port->port_lock);
3020 pr_info("re-initializing driver complete\n");
3025 static void ehea_tx_watchdog(struct net_device *dev)
3027 struct ehea_port *port = netdev_priv(dev);
3029 if (netif_carrier_ok(dev) &&
3030 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
3031 ehea_schedule_port_reset(port);
3034 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3036 struct hcp_query_ehea *cb;
3040 cb = (void *)get_zeroed_page(GFP_KERNEL);
3046 hret = ehea_h_query_ehea(adapter->handle, cb);
3048 if (hret != H_SUCCESS) {
3053 adapter->max_mc_mac = cb->max_mc_mac - 1;
3057 free_page((unsigned long)cb);
3062 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
3064 struct hcp_ehea_port_cb4 *cb4;
3070 /* (Try to) enable *jumbo frames */
3071 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
3073 pr_err("no mem for cb4\n");
3077 hret = ehea_h_query_ehea_port(port->adapter->handle,
3078 port->logical_port_id,
3080 H_PORT_CB4_JUMBO, cb4);
3081 if (hret == H_SUCCESS) {
3082 if (cb4->jumbo_frame)
3085 cb4->jumbo_frame = 1;
3086 hret = ehea_h_modify_ehea_port(port->adapter->
3093 if (hret == H_SUCCESS)
3099 free_page((unsigned long)cb4);
3105 static ssize_t ehea_show_port_id(struct device *dev,
3106 struct device_attribute *attr, char *buf)
3108 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3109 return sprintf(buf, "%d", port->logical_port_id);
3112 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3115 static void __devinit logical_port_release(struct device *dev)
3117 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3118 of_node_put(port->ofdev.dev.of_node);
3121 static struct device *ehea_register_port(struct ehea_port *port,
3122 struct device_node *dn)
3126 port->ofdev.dev.of_node = of_node_get(dn);
3127 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3128 port->ofdev.dev.bus = &ibmebus_bus_type;
3130 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
3131 port->ofdev.dev.release = logical_port_release;
3133 ret = of_device_register(&port->ofdev);
3135 pr_err("failed to register device. ret=%d\n", ret);
3139 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3141 pr_err("failed to register attributes, ret=%d\n", ret);
3142 goto out_unreg_of_dev;
3145 return &port->ofdev.dev;
3148 of_device_unregister(&port->ofdev);
3153 static void ehea_unregister_port(struct ehea_port *port)
3155 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3156 of_device_unregister(&port->ofdev);
3159 static const struct net_device_ops ehea_netdev_ops = {
3160 .ndo_open = ehea_open,
3161 .ndo_stop = ehea_stop,
3162 .ndo_start_xmit = ehea_start_xmit,
3163 #ifdef CONFIG_NET_POLL_CONTROLLER
3164 .ndo_poll_controller = ehea_netpoll,
3166 .ndo_get_stats = ehea_get_stats,
3167 .ndo_set_mac_address = ehea_set_mac_addr,
3168 .ndo_validate_addr = eth_validate_addr,
3169 .ndo_set_rx_mode = ehea_set_multicast_list,
3170 .ndo_change_mtu = ehea_change_mtu,
3171 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
3172 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3173 .ndo_tx_timeout = ehea_tx_watchdog,
3176 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3177 u32 logical_port_id,
3178 struct device_node *dn)
3181 struct net_device *dev;
3182 struct ehea_port *port;
3183 struct device *port_dev;
3186 /* allocate memory for the port structures */
3187 dev = alloc_etherdev(sizeof(struct ehea_port));
3190 pr_err("no mem for net_device\n");
3195 port = netdev_priv(dev);
3197 mutex_init(&port->port_lock);
3198 port->state = EHEA_PORT_DOWN;
3199 port->sig_comp_iv = sq_entries / 10;
3201 port->adapter = adapter;
3203 port->logical_port_id = logical_port_id;
3205 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3207 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3208 if (!port->mc_list) {
3210 goto out_free_ethdev;
3213 INIT_LIST_HEAD(&port->mc_list->list);
3215 ret = ehea_sense_port_attr(port);
3217 goto out_free_mc_list;
3219 port_dev = ehea_register_port(port, dn);
3221 goto out_free_mc_list;
3223 SET_NETDEV_DEV(dev, port_dev);
3225 /* initialize net_device structure */
3226 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3228 dev->netdev_ops = &ehea_netdev_ops;
3229 ehea_set_ethtool_ops(dev);
3231 dev->hw_features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3232 | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX | NETIF_F_LRO;
3233 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3234 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3235 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3236 | NETIF_F_LLTX | NETIF_F_RXCSUM;
3237 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3240 dev->features |= NETIF_F_LRO;
3242 INIT_WORK(&port->reset_task, ehea_reset_port);
3243 INIT_DELAYED_WORK(&port->stats_work, ehea_update_stats);
3245 init_waitqueue_head(&port->swqe_avail_wq);
3246 init_waitqueue_head(&port->restart_wq);
3248 memset(&port->stats, 0, sizeof(struct net_device_stats));
3249 ret = register_netdev(dev);
3251 pr_err("register_netdev failed. ret=%d\n", ret);
3252 goto out_unreg_port;
3255 port->lro_max_aggr = lro_max_aggr;
3257 ret = ehea_get_jumboframe_status(port, &jumbo);
3259 netdev_err(dev, "failed determining jumbo frame status\n");
3261 netdev_info(dev, "Jumbo frames are %sabled\n",
3262 jumbo == 1 ? "en" : "dis");
3264 adapter->active_ports++;
3269 ehea_unregister_port(port);
3272 kfree(port->mc_list);
3278 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3279 logical_port_id, ret);
3283 static void ehea_shutdown_single_port(struct ehea_port *port)
3285 struct ehea_adapter *adapter = port->adapter;
3287 cancel_work_sync(&port->reset_task);
3288 cancel_delayed_work_sync(&port->stats_work);
3289 unregister_netdev(port->netdev);
3290 ehea_unregister_port(port);
3291 kfree(port->mc_list);
3292 free_netdev(port->netdev);
3293 adapter->active_ports--;
3296 static int ehea_setup_ports(struct ehea_adapter *adapter)
3298 struct device_node *lhea_dn;
3299 struct device_node *eth_dn = NULL;
3301 const u32 *dn_log_port_id;
3304 lhea_dn = adapter->ofdev->dev.of_node;
3305 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3307 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3309 if (!dn_log_port_id) {
3310 pr_err("bad device node: eth_dn name=%s\n",
3315 if (ehea_add_adapter_mr(adapter)) {
3316 pr_err("creating MR failed\n");
3317 of_node_put(eth_dn);
3321 adapter->port[i] = ehea_setup_single_port(adapter,
3324 if (adapter->port[i])
3325 netdev_info(adapter->port[i]->netdev,
3326 "logical port id #%d\n", *dn_log_port_id);
3328 ehea_remove_adapter_mr(adapter);
3335 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3336 u32 logical_port_id)
3338 struct device_node *lhea_dn;
3339 struct device_node *eth_dn = NULL;
3340 const u32 *dn_log_port_id;
3342 lhea_dn = adapter->ofdev->dev.of_node;
3343 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3345 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3348 if (*dn_log_port_id == logical_port_id)
3355 static ssize_t ehea_probe_port(struct device *dev,
3356 struct device_attribute *attr,
3357 const char *buf, size_t count)
3359 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3360 struct ehea_port *port;
3361 struct device_node *eth_dn = NULL;
3364 u32 logical_port_id;
3366 sscanf(buf, "%d", &logical_port_id);
3368 port = ehea_get_port(adapter, logical_port_id);
3371 netdev_info(port->netdev, "adding port with logical port id=%d failed: port already configured\n",
3376 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3379 pr_info("no logical port with id %d found\n", logical_port_id);
3383 if (ehea_add_adapter_mr(adapter)) {
3384 pr_err("creating MR failed\n");
3388 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3390 of_node_put(eth_dn);
3393 for (i = 0; i < EHEA_MAX_PORTS; i++)
3394 if (!adapter->port[i]) {
3395 adapter->port[i] = port;
3399 netdev_info(port->netdev, "added: (logical port id=%d)\n",
3402 ehea_remove_adapter_mr(adapter);
3406 return (ssize_t) count;
3409 static ssize_t ehea_remove_port(struct device *dev,
3410 struct device_attribute *attr,
3411 const char *buf, size_t count)
3413 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3414 struct ehea_port *port;
3416 u32 logical_port_id;
3418 sscanf(buf, "%d", &logical_port_id);
3420 port = ehea_get_port(adapter, logical_port_id);
3423 netdev_info(port->netdev, "removed: (logical port id=%d)\n",
3426 ehea_shutdown_single_port(port);
3428 for (i = 0; i < EHEA_MAX_PORTS; i++)
3429 if (adapter->port[i] == port) {
3430 adapter->port[i] = NULL;
3434 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3439 ehea_remove_adapter_mr(adapter);
3441 return (ssize_t) count;
3444 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3445 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3447 int ehea_create_device_sysfs(struct platform_device *dev)
3449 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3453 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3458 void ehea_remove_device_sysfs(struct platform_device *dev)
3460 device_remove_file(&dev->dev, &dev_attr_probe_port);
3461 device_remove_file(&dev->dev, &dev_attr_remove_port);
3464 static int __devinit ehea_probe_adapter(struct platform_device *dev,
3465 const struct of_device_id *id)
3467 struct ehea_adapter *adapter;
3468 const u64 *adapter_handle;
3471 if (!dev || !dev->dev.of_node) {
3472 pr_err("Invalid ibmebus device probed\n");
3476 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3479 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3483 list_add(&adapter->list, &adapter_list);
3485 adapter->ofdev = dev;
3487 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
3490 adapter->handle = *adapter_handle;
3492 if (!adapter->handle) {
3493 dev_err(&dev->dev, "failed getting handle for adapter"
3494 " '%s'\n", dev->dev.of_node->full_name);
3499 adapter->pd = EHEA_PD_ID;
3501 dev_set_drvdata(&dev->dev, adapter);
3504 /* initialize adapter and ports */
3505 /* get adapter properties */
3506 ret = ehea_sense_adapter_attr(adapter);
3508 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3512 adapter->neq = ehea_create_eq(adapter,
3513 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3514 if (!adapter->neq) {
3516 dev_err(&dev->dev, "NEQ creation failed\n");
3520 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3521 (unsigned long)adapter);
3523 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3524 ehea_interrupt_neq, IRQF_DISABLED,
3525 "ehea_neq", adapter);
3527 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3531 ret = ehea_create_device_sysfs(dev);
3535 ret = ehea_setup_ports(adapter);
3537 dev_err(&dev->dev, "setup_ports failed\n");
3538 goto out_rem_dev_sysfs;
3545 ehea_remove_device_sysfs(dev);
3548 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3551 ehea_destroy_eq(adapter->neq);
3554 list_del(&adapter->list);
3558 ehea_update_firmware_handles();
3563 static int __devexit ehea_remove(struct platform_device *dev)
3565 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
3568 for (i = 0; i < EHEA_MAX_PORTS; i++)
3569 if (adapter->port[i]) {
3570 ehea_shutdown_single_port(adapter->port[i]);
3571 adapter->port[i] = NULL;
3574 ehea_remove_device_sysfs(dev);
3576 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3577 tasklet_kill(&adapter->neq_tasklet);
3579 ehea_destroy_eq(adapter->neq);
3580 ehea_remove_adapter_mr(adapter);
3581 list_del(&adapter->list);
3584 ehea_update_firmware_handles();
3589 void ehea_crash_handler(void)
3593 if (ehea_fw_handles.arr)
3594 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3595 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3596 ehea_fw_handles.arr[i].fwh,
3599 if (ehea_bcmc_regs.arr)
3600 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3601 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3602 ehea_bcmc_regs.arr[i].port_id,
3603 ehea_bcmc_regs.arr[i].reg_type,
3604 ehea_bcmc_regs.arr[i].macaddr,
3608 static int ehea_mem_notifier(struct notifier_block *nb,
3609 unsigned long action, void *data)
3611 int ret = NOTIFY_BAD;
3612 struct memory_notify *arg = data;
3614 mutex_lock(&dlpar_mem_lock);
3617 case MEM_CANCEL_OFFLINE:
3618 pr_info("memory offlining canceled");
3619 /* Readd canceled memory block */
3621 pr_info("memory is going online");
3622 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3623 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3627 case MEM_GOING_OFFLINE:
3628 pr_info("memory is going offline");
3629 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3630 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3638 ehea_update_firmware_handles();
3642 mutex_unlock(&dlpar_mem_lock);
3646 static struct notifier_block ehea_mem_nb = {
3647 .notifier_call = ehea_mem_notifier,
3650 static int ehea_reboot_notifier(struct notifier_block *nb,
3651 unsigned long action, void *unused)
3653 if (action == SYS_RESTART) {
3654 pr_info("Reboot: freeing all eHEA resources\n");
3655 ibmebus_unregister_driver(&ehea_driver);
3660 static struct notifier_block ehea_reboot_nb = {
3661 .notifier_call = ehea_reboot_notifier,
3664 static int check_module_parm(void)
3668 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3669 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3670 pr_info("Bad parameter: rq1_entries\n");
3673 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3674 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3675 pr_info("Bad parameter: rq2_entries\n");
3678 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3679 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3680 pr_info("Bad parameter: rq3_entries\n");
3683 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3684 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3685 pr_info("Bad parameter: sq_entries\n");
3692 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3695 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3698 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3699 ehea_show_capabilities, NULL);
3701 int __init ehea_module_init(void)
3705 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION);
3707 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3708 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3710 mutex_init(&ehea_fw_handles.lock);
3711 spin_lock_init(&ehea_bcmc_regs.lock);
3713 ret = check_module_parm();
3717 ret = ehea_create_busmap();
3721 ret = register_reboot_notifier(&ehea_reboot_nb);
3723 pr_info("failed registering reboot notifier\n");
3725 ret = register_memory_notifier(&ehea_mem_nb);
3727 pr_info("failed registering memory remove notifier\n");
3729 ret = crash_shutdown_register(ehea_crash_handler);
3731 pr_info("failed registering crash handler\n");
3733 ret = ibmebus_register_driver(&ehea_driver);
3735 pr_err("failed registering eHEA device driver on ebus\n");
3739 ret = driver_create_file(&ehea_driver.driver,
3740 &driver_attr_capabilities);
3742 pr_err("failed to register capabilities attribute, ret=%d\n",
3750 ibmebus_unregister_driver(&ehea_driver);
3752 unregister_memory_notifier(&ehea_mem_nb);
3753 unregister_reboot_notifier(&ehea_reboot_nb);
3754 crash_shutdown_unregister(ehea_crash_handler);
3759 static void __exit ehea_module_exit(void)
3763 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3764 ibmebus_unregister_driver(&ehea_driver);
3765 unregister_reboot_notifier(&ehea_reboot_nb);
3766 ret = crash_shutdown_unregister(ehea_crash_handler);
3768 pr_info("failed unregistering crash handler\n");
3769 unregister_memory_notifier(&ehea_mem_nb);
3770 kfree(ehea_fw_handles.arr);
3771 kfree(ehea_bcmc_regs.arr);
3772 ehea_destroy_busmap();
3775 module_init(ehea_module_init);
3776 module_exit(ehea_module_exit);