2 * linux/drivers/net/ehea/ehea_main.c
4 * eHEA ethernet device driver for IBM eServer System p
6 * (C) Copyright IBM Corp. 2006
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 #include <linux/tcp.h>
32 #include <linux/udp.h>
34 #include <linux/list.h>
35 #include <linux/slab.h>
36 #include <linux/if_ether.h>
37 #include <linux/notifier.h>
38 #include <linux/reboot.h>
39 #include <linux/memory.h>
40 #include <asm/kexec.h>
41 #include <linux/mutex.h>
47 #include "ehea_phyp.h"
50 MODULE_LICENSE("GPL");
51 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
52 MODULE_DESCRIPTION("IBM eServer HEA Driver");
53 MODULE_VERSION(DRV_VERSION);
56 static int msg_level = -1;
57 static int rq1_entries = EHEA_DEF_ENTRIES_RQ1;
58 static int rq2_entries = EHEA_DEF_ENTRIES_RQ2;
59 static int rq3_entries = EHEA_DEF_ENTRIES_RQ3;
60 static int sq_entries = EHEA_DEF_ENTRIES_SQ;
63 static int lro_max_aggr = EHEA_LRO_MAX_AGGR;
64 static int num_tx_qps = EHEA_NUM_TX_QP;
65 static int prop_carrier_state;
67 module_param(msg_level, int, 0);
68 module_param(rq1_entries, int, 0);
69 module_param(rq2_entries, int, 0);
70 module_param(rq3_entries, int, 0);
71 module_param(sq_entries, int, 0);
72 module_param(prop_carrier_state, int, 0);
73 module_param(use_mcs, int, 0);
74 module_param(use_lro, int, 0);
75 module_param(lro_max_aggr, int, 0);
76 module_param(num_tx_qps, int, 0);
78 MODULE_PARM_DESC(num_tx_qps, "Number of TX-QPS");
79 MODULE_PARM_DESC(msg_level, "msg_level");
80 MODULE_PARM_DESC(prop_carrier_state, "Propagate carrier state of physical "
81 "port to stack. 1:yes, 0:no. Default = 0 ");
82 MODULE_PARM_DESC(rq3_entries, "Number of entries for Receive Queue 3 "
83 "[2^x - 1], x = [6..14]. Default = "
84 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3) ")");
85 MODULE_PARM_DESC(rq2_entries, "Number of entries for Receive Queue 2 "
86 "[2^x - 1], x = [6..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2) ")");
88 MODULE_PARM_DESC(rq1_entries, "Number of entries for Receive Queue 1 "
89 "[2^x - 1], x = [6..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1) ")");
91 MODULE_PARM_DESC(sq_entries, " Number of entries for the Send Queue "
92 "[2^x - 1], x = [6..14]. Default = "
93 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ) ")");
94 MODULE_PARM_DESC(use_mcs, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
96 MODULE_PARM_DESC(lro_max_aggr, " LRO: Max packets to be aggregated. Default = "
97 __MODULE_STRING(EHEA_LRO_MAX_AGGR));
98 MODULE_PARM_DESC(use_lro, " Large Receive Offload, 1: enable, 0: disable, "
101 static int port_name_cnt;
102 static LIST_HEAD(adapter_list);
103 static unsigned long ehea_driver_flags;
104 struct work_struct ehea_rereg_mr_task;
105 static DEFINE_MUTEX(dlpar_mem_lock);
106 struct ehea_fw_handle_array ehea_fw_handles;
107 struct ehea_bcmc_reg_array ehea_bcmc_regs;
110 static int __devinit ehea_probe_adapter(struct platform_device *dev,
111 const struct of_device_id *id);
113 static int __devexit ehea_remove(struct platform_device *dev);
115 static struct of_device_id ehea_device_table[] = {
118 .compatible = "IBM,lhea",
122 MODULE_DEVICE_TABLE(of, ehea_device_table);
124 static struct of_platform_driver ehea_driver = {
127 .owner = THIS_MODULE,
128 .of_match_table = ehea_device_table,
130 .probe = ehea_probe_adapter,
131 .remove = ehea_remove,
134 void ehea_dump(void *adr, int len, char *msg)
137 unsigned char *deb = adr;
138 for (x = 0; x < len; x += 16) {
139 printk(DRV_NAME " %s adr=%p ofs=%04x %016llx %016llx\n", msg,
140 deb, x, *((u64 *)&deb[0]), *((u64 *)&deb[8]));
145 void ehea_schedule_port_reset(struct ehea_port *port)
147 if (!test_bit(__EHEA_DISABLE_PORT_RESET, &port->flags))
148 schedule_work(&port->reset_task);
151 static void ehea_update_firmware_handles(void)
153 struct ehea_fw_handle_entry *arr = NULL;
154 struct ehea_adapter *adapter;
155 int num_adapters = 0;
159 int num_fw_handles, k, l;
161 /* Determine number of handles */
162 mutex_lock(&ehea_fw_handles.lock);
164 list_for_each_entry(adapter, &adapter_list, list) {
167 for (k = 0; k < EHEA_MAX_PORTS; k++) {
168 struct ehea_port *port = adapter->port[k];
170 if (!port || (port->state != EHEA_PORT_UP))
174 num_portres += port->num_def_qps + port->num_add_tx_qps;
178 num_fw_handles = num_adapters * EHEA_NUM_ADAPTER_FW_HANDLES +
179 num_ports * EHEA_NUM_PORT_FW_HANDLES +
180 num_portres * EHEA_NUM_PORTRES_FW_HANDLES;
182 if (num_fw_handles) {
183 arr = kcalloc(num_fw_handles, sizeof(*arr), GFP_KERNEL);
185 goto out; /* Keep the existing array */
189 list_for_each_entry(adapter, &adapter_list, list) {
190 if (num_adapters == 0)
193 for (k = 0; k < EHEA_MAX_PORTS; k++) {
194 struct ehea_port *port = adapter->port[k];
196 if (!port || (port->state != EHEA_PORT_UP) ||
201 l < port->num_def_qps + port->num_add_tx_qps;
203 struct ehea_port_res *pr = &port->port_res[l];
205 arr[i].adh = adapter->handle;
206 arr[i++].fwh = pr->qp->fw_handle;
207 arr[i].adh = adapter->handle;
208 arr[i++].fwh = pr->send_cq->fw_handle;
209 arr[i].adh = adapter->handle;
210 arr[i++].fwh = pr->recv_cq->fw_handle;
211 arr[i].adh = adapter->handle;
212 arr[i++].fwh = pr->eq->fw_handle;
213 arr[i].adh = adapter->handle;
214 arr[i++].fwh = pr->send_mr.handle;
215 arr[i].adh = adapter->handle;
216 arr[i++].fwh = pr->recv_mr.handle;
218 arr[i].adh = adapter->handle;
219 arr[i++].fwh = port->qp_eq->fw_handle;
223 arr[i].adh = adapter->handle;
224 arr[i++].fwh = adapter->neq->fw_handle;
226 if (adapter->mr.handle) {
227 arr[i].adh = adapter->handle;
228 arr[i++].fwh = adapter->mr.handle;
234 kfree(ehea_fw_handles.arr);
235 ehea_fw_handles.arr = arr;
236 ehea_fw_handles.num_entries = i;
238 mutex_unlock(&ehea_fw_handles.lock);
241 static void ehea_update_bcmc_registrations(void)
244 struct ehea_bcmc_reg_entry *arr = NULL;
245 struct ehea_adapter *adapter;
246 struct ehea_mc_list *mc_entry;
247 int num_registrations = 0;
251 spin_lock_irqsave(&ehea_bcmc_regs.lock, flags);
253 /* Determine number of registrations */
254 list_for_each_entry(adapter, &adapter_list, list)
255 for (k = 0; k < EHEA_MAX_PORTS; k++) {
256 struct ehea_port *port = adapter->port[k];
258 if (!port || (port->state != EHEA_PORT_UP))
261 num_registrations += 2; /* Broadcast registrations */
263 list_for_each_entry(mc_entry, &port->mc_list->list,list)
264 num_registrations += 2;
267 if (num_registrations) {
268 arr = kcalloc(num_registrations, sizeof(*arr), GFP_ATOMIC);
270 goto out; /* Keep the existing array */
274 list_for_each_entry(adapter, &adapter_list, list) {
275 for (k = 0; k < EHEA_MAX_PORTS; k++) {
276 struct ehea_port *port = adapter->port[k];
278 if (!port || (port->state != EHEA_PORT_UP))
281 if (num_registrations == 0)
284 arr[i].adh = adapter->handle;
285 arr[i].port_id = port->logical_port_id;
286 arr[i].reg_type = EHEA_BCMC_BROADCAST |
288 arr[i++].macaddr = port->mac_addr;
290 arr[i].adh = adapter->handle;
291 arr[i].port_id = port->logical_port_id;
292 arr[i].reg_type = EHEA_BCMC_BROADCAST |
293 EHEA_BCMC_VLANID_ALL;
294 arr[i++].macaddr = port->mac_addr;
295 num_registrations -= 2;
297 list_for_each_entry(mc_entry,
298 &port->mc_list->list, list) {
299 if (num_registrations == 0)
302 arr[i].adh = adapter->handle;
303 arr[i].port_id = port->logical_port_id;
304 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
305 EHEA_BCMC_MULTICAST |
307 arr[i++].macaddr = mc_entry->macaddr;
309 arr[i].adh = adapter->handle;
310 arr[i].port_id = port->logical_port_id;
311 arr[i].reg_type = EHEA_BCMC_SCOPE_ALL |
312 EHEA_BCMC_MULTICAST |
313 EHEA_BCMC_VLANID_ALL;
314 arr[i++].macaddr = mc_entry->macaddr;
315 num_registrations -= 2;
321 kfree(ehea_bcmc_regs.arr);
322 ehea_bcmc_regs.arr = arr;
323 ehea_bcmc_regs.num_entries = i;
325 spin_unlock_irqrestore(&ehea_bcmc_regs.lock, flags);
328 static struct net_device_stats *ehea_get_stats(struct net_device *dev)
330 struct ehea_port *port = netdev_priv(dev);
331 struct net_device_stats *stats = &port->stats;
332 struct hcp_ehea_port_cb2 *cb2;
333 u64 hret, rx_packets, tx_packets, rx_bytes = 0, tx_bytes = 0;
336 memset(stats, 0, sizeof(*stats));
338 cb2 = (void *)get_zeroed_page(GFP_KERNEL);
340 ehea_error("no mem for cb2");
344 hret = ehea_h_query_ehea_port(port->adapter->handle,
345 port->logical_port_id,
346 H_PORT_CB2, H_PORT_CB2_ALL, cb2);
347 if (hret != H_SUCCESS) {
348 ehea_error("query_ehea_port failed");
352 if (netif_msg_hw(port))
353 ehea_dump(cb2, sizeof(*cb2), "net_device_stats");
356 for (i = 0; i < port->num_def_qps; i++) {
357 rx_packets += port->port_res[i].rx_packets;
358 rx_bytes += port->port_res[i].rx_bytes;
362 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
363 tx_packets += port->port_res[i].tx_packets;
364 tx_bytes += port->port_res[i].tx_bytes;
367 stats->tx_packets = tx_packets;
368 stats->multicast = cb2->rxmcp;
369 stats->rx_errors = cb2->rxuerr;
370 stats->rx_bytes = rx_bytes;
371 stats->tx_bytes = tx_bytes;
372 stats->rx_packets = rx_packets;
375 free_page((unsigned long)cb2);
380 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
382 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
383 struct net_device *dev = pr->port->netdev;
384 int max_index_mask = pr->rq1_skba.len - 1;
385 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
389 pr->rq1_skba.os_skbs = 0;
391 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
393 pr->rq1_skba.index = index;
394 pr->rq1_skba.os_skbs = fill_wqes;
398 for (i = 0; i < fill_wqes; i++) {
399 if (!skb_arr_rq1[index]) {
400 skb_arr_rq1[index] = netdev_alloc_skb(dev,
402 if (!skb_arr_rq1[index]) {
403 ehea_info("Unable to allocate enough skb in the array\n");
404 pr->rq1_skba.os_skbs = fill_wqes - i;
409 index &= max_index_mask;
417 ehea_update_rq1a(pr->qp, adder);
420 static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
422 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
423 struct net_device *dev = pr->port->netdev;
426 if (nr_rq1a > pr->rq1_skba.len) {
427 ehea_error("NR_RQ1A bigger than skb array len\n");
431 for (i = 0; i < nr_rq1a; i++) {
432 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
433 if (!skb_arr_rq1[i]) {
434 ehea_info("No enough memory to allocate skb array\n");
439 ehea_update_rq1a(pr->qp, i);
442 static int ehea_refill_rq_def(struct ehea_port_res *pr,
443 struct ehea_q_skb_arr *q_skba, int rq_nr,
444 int num_wqes, int wqe_type, int packet_size)
446 struct net_device *dev = pr->port->netdev;
447 struct ehea_qp *qp = pr->qp;
448 struct sk_buff **skb_arr = q_skba->arr;
449 struct ehea_rwqe *rwqe;
450 int i, index, max_index_mask, fill_wqes;
454 fill_wqes = q_skba->os_skbs + num_wqes;
457 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
458 q_skba->os_skbs = fill_wqes;
462 index = q_skba->index;
463 max_index_mask = q_skba->len - 1;
464 for (i = 0; i < fill_wqes; i++) {
468 skb = netdev_alloc_skb_ip_align(dev, packet_size);
470 q_skba->os_skbs = fill_wqes - i;
471 if (q_skba->os_skbs == q_skba->len - 2) {
472 ehea_info("%s: rq%i ran dry - no mem for skb",
473 pr->port->netdev->name, rq_nr);
479 skb_arr[index] = skb;
480 tmp_addr = ehea_map_vaddr(skb->data);
481 if (tmp_addr == -1) {
483 q_skba->os_skbs = fill_wqes - i;
488 rwqe = ehea_get_next_rwqe(qp, rq_nr);
489 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
490 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
491 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
492 rwqe->sg_list[0].vaddr = tmp_addr;
493 rwqe->sg_list[0].len = packet_size;
494 rwqe->data_segments = 1;
497 index &= max_index_mask;
501 q_skba->index = index;
508 ehea_update_rq2a(pr->qp, adder);
510 ehea_update_rq3a(pr->qp, adder);
516 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
518 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
519 nr_of_wqes, EHEA_RWQE2_TYPE,
524 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
526 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
527 nr_of_wqes, EHEA_RWQE3_TYPE,
528 EHEA_MAX_PACKET_SIZE);
531 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
533 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
534 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
536 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
537 (cqe->header_length == 0))
542 static inline void ehea_fill_skb(struct net_device *dev,
543 struct sk_buff *skb, struct ehea_cqe *cqe)
545 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
547 skb_put(skb, length);
548 skb->protocol = eth_type_trans(skb, dev);
550 /* The packet was not an IPV4 packet so a complemented checksum was
551 calculated. The value is found in the Internet Checksum field. */
552 if (cqe->status & EHEA_CQE_BLIND_CKSUM) {
553 skb->ip_summed = CHECKSUM_COMPLETE;
554 skb->csum = csum_unfold(~cqe->inet_checksum_value);
556 skb->ip_summed = CHECKSUM_UNNECESSARY;
559 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
561 struct ehea_cqe *cqe)
563 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
574 prefetchw(pref + EHEA_CACHE_LINE);
576 pref = (skb_array[x]->data);
578 prefetch(pref + EHEA_CACHE_LINE);
579 prefetch(pref + EHEA_CACHE_LINE * 2);
580 prefetch(pref + EHEA_CACHE_LINE * 3);
583 skb = skb_array[skb_index];
584 skb_array[skb_index] = NULL;
588 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
589 int arr_len, int wqe_index)
601 prefetchw(pref + EHEA_CACHE_LINE);
603 pref = (skb_array[x]->data);
605 prefetchw(pref + EHEA_CACHE_LINE);
608 skb = skb_array[wqe_index];
609 skb_array[wqe_index] = NULL;
613 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
614 struct ehea_cqe *cqe, int *processed_rq2,
619 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
620 pr->p_stats.err_tcp_cksum++;
621 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
622 pr->p_stats.err_ip_cksum++;
623 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
624 pr->p_stats.err_frame_crc++;
628 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
630 } else if (rq == 3) {
632 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
636 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
637 if (netif_msg_rx_err(pr->port)) {
638 ehea_error("Critical receive error for QP %d. "
639 "Resetting port.", pr->qp->init_attr.qp_nr);
640 ehea_dump(cqe, sizeof(*cqe), "CQE");
642 ehea_schedule_port_reset(pr->port);
649 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
650 void **tcph, u64 *hdr_flags, void *priv)
652 struct ehea_cqe *cqe = priv;
656 /* non tcp/udp packets */
657 if (!cqe->header_length)
661 skb_reset_network_header(skb);
663 if (iph->protocol != IPPROTO_TCP)
666 ip_len = ip_hdrlen(skb);
667 skb_set_transport_header(skb, ip_len);
668 *tcph = tcp_hdr(skb);
670 /* check if ip header and tcp header are complete */
671 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
674 *hdr_flags = LRO_IPV4 | LRO_TCP;
680 static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
683 int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) &&
688 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
693 lro_receive_skb(&pr->lro_mgr, skb, cqe);
696 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
699 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 if (netif_msg_rx_err(port))
742 ehea_error("LL rq1: skb=NULL");
744 skb = netdev_alloc_skb(dev,
747 ehea_info("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 if (netif_msg_rx_err(port))
760 ehea_error("rq2: skb=NULL");
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 if (netif_msg_rx_err(port))
771 ehea_error("rq3: skb=NULL");
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);
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 ehea_error("HW/SW queues out of sync");
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 ehea_error("Bad send completion status=0x%04X",
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 ehea_error("Resetting port");
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 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
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 ehea_error("Resetting port");
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 ehea_error("no mem for cb0");
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 ehea_error("no mem for cb4");
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 ehea_error("Failed sensing port speed");
1195 if (hret == H_AUTHORITY) {
1196 ehea_info("Hypervisor denied setting port speed");
1200 ehea_error("Failed setting port speed");
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;
1218 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1219 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1220 port = ehea_get_port(adapter, portnum);
1223 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1226 ehea_error("unknown portnum %x", portnum);
1230 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1231 if (!netif_carrier_ok(port->netdev)) {
1232 ret = ehea_sense_port_attr(port);
1234 ehea_error("failed resensing port "
1239 if (netif_msg_link(port))
1240 ehea_info("%s: Logical port up: %dMbps "
1244 port->full_duplex ==
1245 1 ? "Full" : "Half");
1247 netif_carrier_on(port->netdev);
1248 netif_wake_queue(port->netdev);
1251 if (netif_carrier_ok(port->netdev)) {
1252 if (netif_msg_link(port))
1253 ehea_info("%s: Logical port down",
1254 port->netdev->name);
1255 netif_carrier_off(port->netdev);
1256 netif_stop_queue(port->netdev);
1259 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1260 port->phy_link = EHEA_PHY_LINK_UP;
1261 if (netif_msg_link(port))
1262 ehea_info("%s: Physical port up",
1263 port->netdev->name);
1264 if (prop_carrier_state)
1265 netif_carrier_on(port->netdev);
1267 port->phy_link = EHEA_PHY_LINK_DOWN;
1268 if (netif_msg_link(port))
1269 ehea_info("%s: Physical port down",
1270 port->netdev->name);
1271 if (prop_carrier_state)
1272 netif_carrier_off(port->netdev);
1275 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1276 ehea_info("External switch port is primary port");
1278 ehea_info("External switch port is backup port");
1281 case EHEA_EC_ADAPTER_MALFUNC:
1282 ehea_error("Adapter malfunction");
1284 case EHEA_EC_PORT_MALFUNC:
1285 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1286 netif_carrier_off(port->netdev);
1287 netif_stop_queue(port->netdev);
1290 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
1295 static void ehea_neq_tasklet(unsigned long data)
1297 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1298 struct ehea_eqe *eqe;
1301 eqe = ehea_poll_eq(adapter->neq);
1302 ehea_debug("eqe=%p", eqe);
1305 ehea_debug("*eqe=%lx", eqe->entry);
1306 ehea_parse_eqe(adapter, eqe->entry);
1307 eqe = ehea_poll_eq(adapter->neq);
1308 ehea_debug("next eqe=%p", eqe);
1311 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1312 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1313 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1315 ehea_h_reset_events(adapter->handle,
1316 adapter->neq->fw_handle, event_mask);
1319 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1321 struct ehea_adapter *adapter = param;
1322 tasklet_hi_schedule(&adapter->neq_tasklet);
1327 static int ehea_fill_port_res(struct ehea_port_res *pr)
1330 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1332 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1333 - init_attr->act_nr_rwqes_rq2
1334 - init_attr->act_nr_rwqes_rq3 - 1);
1336 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1338 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1343 static int ehea_reg_interrupts(struct net_device *dev)
1345 struct ehea_port *port = netdev_priv(dev);
1346 struct ehea_port_res *pr;
1350 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1353 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1354 ehea_qp_aff_irq_handler,
1355 IRQF_DISABLED, port->int_aff_name, port);
1357 ehea_error("failed registering irq for qp_aff_irq_handler:"
1358 "ist=%X", port->qp_eq->attr.ist1);
1362 if (netif_msg_ifup(port))
1363 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1364 "registered", port->qp_eq->attr.ist1);
1367 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1368 pr = &port->port_res[i];
1369 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1370 "%s-queue%d", dev->name, i);
1371 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1372 ehea_recv_irq_handler,
1373 IRQF_DISABLED, pr->int_send_name,
1376 ehea_error("failed registering irq for ehea_queue "
1377 "port_res_nr:%d, ist=%X", i,
1381 if (netif_msg_ifup(port))
1382 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1383 "%d registered", pr->eq->attr.ist1, i);
1391 u32 ist = port->port_res[i].eq->attr.ist1;
1392 ibmebus_free_irq(ist, &port->port_res[i]);
1396 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1397 i = port->num_def_qps;
1403 static void ehea_free_interrupts(struct net_device *dev)
1405 struct ehea_port *port = netdev_priv(dev);
1406 struct ehea_port_res *pr;
1411 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1412 pr = &port->port_res[i];
1413 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1414 if (netif_msg_intr(port))
1415 ehea_info("free send irq for res %d with handle 0x%X",
1416 i, pr->eq->attr.ist1);
1419 /* associated events */
1420 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1421 if (netif_msg_intr(port))
1422 ehea_info("associated event interrupt for handle 0x%X freed",
1423 port->qp_eq->attr.ist1);
1426 static int ehea_configure_port(struct ehea_port *port)
1430 struct hcp_ehea_port_cb0 *cb0;
1433 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1437 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1438 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1439 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1440 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1441 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1442 PXLY_RC_VLAN_FILTER)
1443 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1445 for (i = 0; i < port->num_mcs; i++)
1447 cb0->default_qpn_arr[i] =
1448 port->port_res[i].qp->init_attr.qp_nr;
1450 cb0->default_qpn_arr[i] =
1451 port->port_res[0].qp->init_attr.qp_nr;
1453 if (netif_msg_ifup(port))
1454 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1456 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1457 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1459 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1460 port->logical_port_id,
1461 H_PORT_CB0, mask, cb0);
1463 if (hret != H_SUCCESS)
1469 free_page((unsigned long)cb0);
1474 int ehea_gen_smrs(struct ehea_port_res *pr)
1477 struct ehea_adapter *adapter = pr->port->adapter;
1479 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1483 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1490 ehea_rem_mr(&pr->send_mr);
1492 ehea_error("Generating SMRS failed\n");
1496 int ehea_rem_smrs(struct ehea_port_res *pr)
1498 if ((ehea_rem_mr(&pr->send_mr)) ||
1499 (ehea_rem_mr(&pr->recv_mr)))
1505 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1507 int arr_size = sizeof(void *) * max_q_entries;
1509 q_skba->arr = vmalloc(arr_size);
1513 memset(q_skba->arr, 0, arr_size);
1515 q_skba->len = max_q_entries;
1517 q_skba->os_skbs = 0;
1522 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1523 struct port_res_cfg *pr_cfg, int queue_token)
1525 struct ehea_adapter *adapter = port->adapter;
1526 enum ehea_eq_type eq_type = EHEA_EQ;
1527 struct ehea_qp_init_attr *init_attr = NULL;
1529 u64 tx_bytes, rx_bytes, tx_packets, rx_packets;
1531 tx_bytes = pr->tx_bytes;
1532 tx_packets = pr->tx_packets;
1533 rx_bytes = pr->rx_bytes;
1534 rx_packets = pr->rx_packets;
1536 memset(pr, 0, sizeof(struct ehea_port_res));
1538 pr->tx_bytes = rx_bytes;
1539 pr->tx_packets = tx_packets;
1540 pr->rx_bytes = rx_bytes;
1541 pr->rx_packets = rx_packets;
1544 spin_lock_init(&pr->xmit_lock);
1545 spin_lock_init(&pr->netif_queue);
1547 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1549 ehea_error("create_eq failed (eq)");
1553 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1555 port->logical_port_id);
1557 ehea_error("create_cq failed (cq_recv)");
1561 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1563 port->logical_port_id);
1565 ehea_error("create_cq failed (cq_send)");
1569 if (netif_msg_ifup(port))
1570 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1571 pr->send_cq->attr.act_nr_of_cqes,
1572 pr->recv_cq->attr.act_nr_of_cqes);
1574 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1577 ehea_error("no mem for ehea_qp_init_attr");
1581 init_attr->low_lat_rq1 = 1;
1582 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1583 init_attr->rq_count = 3;
1584 init_attr->qp_token = queue_token;
1585 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1586 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1587 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1588 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1589 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1590 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1591 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1592 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1593 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1594 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1595 init_attr->port_nr = port->logical_port_id;
1596 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1597 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1598 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1600 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1602 ehea_error("create_qp failed");
1607 if (netif_msg_ifup(port))
1608 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1609 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1610 init_attr->act_nr_send_wqes,
1611 init_attr->act_nr_rwqes_rq1,
1612 init_attr->act_nr_rwqes_rq2,
1613 init_attr->act_nr_rwqes_rq3);
1615 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1617 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1618 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1619 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1620 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1624 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1625 if (ehea_gen_smrs(pr) != 0) {
1630 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1634 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1636 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1637 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1638 pr->lro_mgr.lro_arr = pr->lro_desc;
1639 pr->lro_mgr.get_skb_header = get_skb_hdr;
1640 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1641 pr->lro_mgr.dev = port->netdev;
1642 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1643 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1650 vfree(pr->sq_skba.arr);
1651 vfree(pr->rq1_skba.arr);
1652 vfree(pr->rq2_skba.arr);
1653 vfree(pr->rq3_skba.arr);
1654 ehea_destroy_qp(pr->qp);
1655 ehea_destroy_cq(pr->send_cq);
1656 ehea_destroy_cq(pr->recv_cq);
1657 ehea_destroy_eq(pr->eq);
1662 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1667 netif_napi_del(&pr->napi);
1669 ret = ehea_destroy_qp(pr->qp);
1672 ehea_destroy_cq(pr->send_cq);
1673 ehea_destroy_cq(pr->recv_cq);
1674 ehea_destroy_eq(pr->eq);
1676 for (i = 0; i < pr->rq1_skba.len; i++)
1677 if (pr->rq1_skba.arr[i])
1678 dev_kfree_skb(pr->rq1_skba.arr[i]);
1680 for (i = 0; i < pr->rq2_skba.len; i++)
1681 if (pr->rq2_skba.arr[i])
1682 dev_kfree_skb(pr->rq2_skba.arr[i]);
1684 for (i = 0; i < pr->rq3_skba.len; i++)
1685 if (pr->rq3_skba.arr[i])
1686 dev_kfree_skb(pr->rq3_skba.arr[i]);
1688 for (i = 0; i < pr->sq_skba.len; i++)
1689 if (pr->sq_skba.arr[i])
1690 dev_kfree_skb(pr->sq_skba.arr[i]);
1692 vfree(pr->rq1_skba.arr);
1693 vfree(pr->rq2_skba.arr);
1694 vfree(pr->rq3_skba.arr);
1695 vfree(pr->sq_skba.arr);
1696 ret = ehea_rem_smrs(pr);
1702 * The write_* functions store information in swqe which is used by
1703 * the hardware to calculate the ip/tcp/udp checksum
1706 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1707 const struct sk_buff *skb)
1709 swqe->ip_start = skb_network_offset(skb);
1710 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1713 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1714 const struct sk_buff *skb)
1717 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1719 swqe->tcp_end = (u16)skb->len - 1;
1722 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1723 const struct sk_buff *skb)
1726 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1728 swqe->tcp_end = (u16)skb->len - 1;
1732 static void write_swqe2_TSO(struct sk_buff *skb,
1733 struct ehea_swqe *swqe, u32 lkey)
1735 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1736 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1737 int skb_data_size = skb_headlen(skb);
1740 /* Packet is TCP with TSO enabled */
1741 swqe->tx_control |= EHEA_SWQE_TSO;
1742 swqe->mss = skb_shinfo(skb)->gso_size;
1743 /* copy only eth/ip/tcp headers to immediate data and
1744 * the rest of skb->data to sg1entry
1746 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1748 skb_data_size = skb_headlen(skb);
1750 if (skb_data_size >= headersize) {
1751 /* copy immediate data */
1752 skb_copy_from_linear_data(skb, imm_data, headersize);
1753 swqe->immediate_data_length = headersize;
1755 if (skb_data_size > headersize) {
1756 /* set sg1entry data */
1757 sg1entry->l_key = lkey;
1758 sg1entry->len = skb_data_size - headersize;
1760 ehea_map_vaddr(skb->data + headersize);
1761 swqe->descriptors++;
1764 ehea_error("cannot handle fragmented headers");
1767 static void write_swqe2_nonTSO(struct sk_buff *skb,
1768 struct ehea_swqe *swqe, u32 lkey)
1770 int skb_data_size = skb_headlen(skb);
1771 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1772 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1774 /* Packet is any nonTSO type
1776 * Copy as much as possible skb->data to immediate data and
1777 * the rest to sg1entry
1779 if (skb_data_size >= SWQE2_MAX_IMM) {
1780 /* copy immediate data */
1781 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1783 swqe->immediate_data_length = SWQE2_MAX_IMM;
1785 if (skb_data_size > SWQE2_MAX_IMM) {
1786 /* copy sg1entry data */
1787 sg1entry->l_key = lkey;
1788 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1790 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1791 swqe->descriptors++;
1794 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1795 swqe->immediate_data_length = skb_data_size;
1799 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1800 struct ehea_swqe *swqe, u32 lkey)
1802 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1804 int nfrags, sg1entry_contains_frag_data, i;
1806 nfrags = skb_shinfo(skb)->nr_frags;
1807 sg1entry = &swqe->u.immdata_desc.sg_entry;
1808 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1809 swqe->descriptors = 0;
1810 sg1entry_contains_frag_data = 0;
1812 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1813 write_swqe2_TSO(skb, swqe, lkey);
1815 write_swqe2_nonTSO(skb, swqe, lkey);
1817 /* write descriptors */
1819 if (swqe->descriptors == 0) {
1820 /* sg1entry not yet used */
1821 frag = &skb_shinfo(skb)->frags[0];
1823 /* copy sg1entry data */
1824 sg1entry->l_key = lkey;
1825 sg1entry->len = frag->size;
1827 ehea_map_vaddr(page_address(frag->page)
1828 + frag->page_offset);
1829 swqe->descriptors++;
1830 sg1entry_contains_frag_data = 1;
1833 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1835 frag = &skb_shinfo(skb)->frags[i];
1836 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1838 sgentry->l_key = lkey;
1839 sgentry->len = frag->size;
1841 ehea_map_vaddr(page_address(frag->page)
1842 + frag->page_offset);
1843 swqe->descriptors++;
1848 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1854 /* De/Register untagged packets */
1855 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1856 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1857 port->logical_port_id,
1858 reg_type, port->mac_addr, 0, hcallid);
1859 if (hret != H_SUCCESS) {
1860 ehea_error("%sregistering bc address failed (tagged)",
1861 hcallid == H_REG_BCMC ? "" : "de");
1866 /* De/Register VLAN packets */
1867 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1868 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1869 port->logical_port_id,
1870 reg_type, port->mac_addr, 0, hcallid);
1871 if (hret != H_SUCCESS) {
1872 ehea_error("%sregistering bc address failed (vlan)",
1873 hcallid == H_REG_BCMC ? "" : "de");
1880 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1882 struct ehea_port *port = netdev_priv(dev);
1883 struct sockaddr *mac_addr = sa;
1884 struct hcp_ehea_port_cb0 *cb0;
1888 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1889 ret = -EADDRNOTAVAIL;
1893 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1895 ehea_error("no mem for cb0");
1900 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1902 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1904 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1905 port->logical_port_id, H_PORT_CB0,
1906 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1907 if (hret != H_SUCCESS) {
1912 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1914 /* Deregister old MAC in pHYP */
1915 if (port->state == EHEA_PORT_UP) {
1916 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1921 port->mac_addr = cb0->port_mac_addr << 16;
1923 /* Register new MAC in pHYP */
1924 if (port->state == EHEA_PORT_UP) {
1925 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1933 ehea_update_bcmc_registrations();
1935 free_page((unsigned long)cb0);
1940 static void ehea_promiscuous_error(u64 hret, int enable)
1942 if (hret == H_AUTHORITY)
1943 ehea_info("Hypervisor denied %sabling promiscuous mode",
1944 enable == 1 ? "en" : "dis");
1946 ehea_error("failed %sabling promiscuous mode",
1947 enable == 1 ? "en" : "dis");
1950 static void ehea_promiscuous(struct net_device *dev, int enable)
1952 struct ehea_port *port = netdev_priv(dev);
1953 struct hcp_ehea_port_cb7 *cb7;
1956 if (enable == port->promisc)
1959 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
1961 ehea_error("no mem for cb7");
1965 /* Modify Pxs_DUCQPN in CB7 */
1966 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1968 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1969 port->logical_port_id,
1970 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1972 ehea_promiscuous_error(hret, enable);
1976 port->promisc = enable;
1978 free_page((unsigned long)cb7);
1981 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1987 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1988 | EHEA_BCMC_UNTAGGED;
1990 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1991 port->logical_port_id,
1992 reg_type, mc_mac_addr, 0, hcallid);
1996 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1997 | EHEA_BCMC_VLANID_ALL;
1999 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
2000 port->logical_port_id,
2001 reg_type, mc_mac_addr, 0, hcallid);
2006 static int ehea_drop_multicast_list(struct net_device *dev)
2008 struct ehea_port *port = netdev_priv(dev);
2009 struct ehea_mc_list *mc_entry = port->mc_list;
2010 struct list_head *pos;
2011 struct list_head *temp;
2015 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
2016 mc_entry = list_entry(pos, struct ehea_mc_list, list);
2018 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
2021 ehea_error("failed deregistering mcast MAC");
2031 static void ehea_allmulti(struct net_device *dev, int enable)
2033 struct ehea_port *port = netdev_priv(dev);
2036 if (!port->allmulti) {
2038 /* Enable ALLMULTI */
2039 ehea_drop_multicast_list(dev);
2040 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2044 ehea_error("failed enabling IFF_ALLMULTI");
2048 /* Disable ALLMULTI */
2049 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2053 ehea_error("failed disabling IFF_ALLMULTI");
2057 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
2059 struct ehea_mc_list *ehea_mcl_entry;
2062 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
2063 if (!ehea_mcl_entry) {
2064 ehea_error("no mem for mcl_entry");
2068 INIT_LIST_HEAD(&ehea_mcl_entry->list);
2070 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2072 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2075 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2077 ehea_error("failed registering mcast MAC");
2078 kfree(ehea_mcl_entry);
2082 static void ehea_set_multicast_list(struct net_device *dev)
2084 struct ehea_port *port = netdev_priv(dev);
2085 struct netdev_hw_addr *ha;
2088 if (dev->flags & IFF_PROMISC) {
2089 ehea_promiscuous(dev, 1);
2092 ehea_promiscuous(dev, 0);
2094 if (dev->flags & IFF_ALLMULTI) {
2095 ehea_allmulti(dev, 1);
2098 ehea_allmulti(dev, 0);
2100 if (!netdev_mc_empty(dev)) {
2101 ret = ehea_drop_multicast_list(dev);
2103 /* Dropping the current multicast list failed.
2104 * Enabling ALL_MULTI is the best we can do.
2106 ehea_allmulti(dev, 1);
2109 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
2110 ehea_info("Mcast registration limit reached (0x%llx). "
2112 port->adapter->max_mc_mac);
2116 netdev_for_each_mc_addr(ha, dev)
2117 ehea_add_multicast_entry(port, ha->addr);
2121 ehea_update_bcmc_registrations();
2124 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2126 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2132 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2133 struct ehea_swqe *swqe, u32 lkey)
2135 if (skb->protocol == htons(ETH_P_IP)) {
2136 const struct iphdr *iph = ip_hdr(skb);
2139 swqe->tx_control |= EHEA_SWQE_CRC
2140 | EHEA_SWQE_IP_CHECKSUM
2141 | EHEA_SWQE_TCP_CHECKSUM
2142 | EHEA_SWQE_IMM_DATA_PRESENT
2143 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2145 write_ip_start_end(swqe, skb);
2147 if (iph->protocol == IPPROTO_UDP) {
2148 if ((iph->frag_off & IP_MF) ||
2149 (iph->frag_off & IP_OFFSET))
2150 /* IP fragment, so don't change cs */
2151 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2153 write_udp_offset_end(swqe, skb);
2154 } else if (iph->protocol == IPPROTO_TCP) {
2155 write_tcp_offset_end(swqe, skb);
2158 /* icmp (big data) and ip segmentation packets (all other ip
2159 packets) do not require any special handling */
2162 /* Other Ethernet Protocol */
2163 swqe->tx_control |= EHEA_SWQE_CRC
2164 | EHEA_SWQE_IMM_DATA_PRESENT
2165 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2168 write_swqe2_data(skb, dev, swqe, lkey);
2171 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2172 struct ehea_swqe *swqe)
2174 int nfrags = skb_shinfo(skb)->nr_frags;
2175 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2179 if (skb->protocol == htons(ETH_P_IP)) {
2180 const struct iphdr *iph = ip_hdr(skb);
2183 write_ip_start_end(swqe, skb);
2185 if (iph->protocol == IPPROTO_TCP) {
2186 swqe->tx_control |= EHEA_SWQE_CRC
2187 | EHEA_SWQE_IP_CHECKSUM
2188 | EHEA_SWQE_TCP_CHECKSUM
2189 | EHEA_SWQE_IMM_DATA_PRESENT;
2191 write_tcp_offset_end(swqe, skb);
2193 } else if (iph->protocol == IPPROTO_UDP) {
2194 if ((iph->frag_off & IP_MF) ||
2195 (iph->frag_off & IP_OFFSET))
2196 /* IP fragment, so don't change cs */
2197 swqe->tx_control |= EHEA_SWQE_CRC
2198 | EHEA_SWQE_IMM_DATA_PRESENT;
2200 swqe->tx_control |= EHEA_SWQE_CRC
2201 | EHEA_SWQE_IP_CHECKSUM
2202 | EHEA_SWQE_TCP_CHECKSUM
2203 | EHEA_SWQE_IMM_DATA_PRESENT;
2205 write_udp_offset_end(swqe, skb);
2208 /* icmp (big data) and
2209 ip segmentation packets (all other ip packets) */
2210 swqe->tx_control |= EHEA_SWQE_CRC
2211 | EHEA_SWQE_IP_CHECKSUM
2212 | EHEA_SWQE_IMM_DATA_PRESENT;
2215 /* Other Ethernet Protocol */
2216 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2218 /* copy (immediate) data */
2220 /* data is in a single piece */
2221 skb_copy_from_linear_data(skb, imm_data, skb->len);
2223 /* first copy data from the skb->data buffer ... */
2224 skb_copy_from_linear_data(skb, imm_data,
2226 imm_data += skb_headlen(skb);
2228 /* ... then copy data from the fragments */
2229 for (i = 0; i < nfrags; i++) {
2230 frag = &skb_shinfo(skb)->frags[i];
2232 page_address(frag->page) + frag->page_offset,
2234 imm_data += frag->size;
2237 swqe->immediate_data_length = skb->len;
2241 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2246 if ((skb->protocol == htons(ETH_P_IP)) &&
2247 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2248 tcp = (struct tcphdr *)(skb_network_header(skb) +
2249 (ip_hdr(skb)->ihl * 4));
2250 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2251 tmp += ip_hdr(skb)->daddr % 31;
2252 return tmp % num_qps;
2257 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2259 struct ehea_port *port = netdev_priv(dev);
2260 struct ehea_swqe *swqe;
2261 unsigned long flags;
2264 struct ehea_port_res *pr;
2266 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2268 if (!spin_trylock(&pr->xmit_lock))
2269 return NETDEV_TX_BUSY;
2271 if (pr->queue_stopped) {
2272 spin_unlock(&pr->xmit_lock);
2273 return NETDEV_TX_BUSY;
2276 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2277 memset(swqe, 0, SWQE_HEADER_SIZE);
2278 atomic_dec(&pr->swqe_avail);
2280 if (vlan_tx_tag_present(skb)) {
2281 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2282 swqe->vlan_tag = vlan_tx_tag_get(skb);
2286 pr->tx_bytes += skb->len;
2288 if (skb->len <= SWQE3_MAX_IMM) {
2289 u32 sig_iv = port->sig_comp_iv;
2290 u32 swqe_num = pr->swqe_id_counter;
2291 ehea_xmit3(skb, dev, swqe);
2292 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2293 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2294 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2295 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2297 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2298 pr->swqe_ll_count = 0;
2300 pr->swqe_ll_count += 1;
2303 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2304 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2305 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2306 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2307 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2309 pr->sq_skba.index++;
2310 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2312 lkey = pr->send_mr.lkey;
2313 ehea_xmit2(skb, dev, swqe, lkey);
2314 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2316 pr->swqe_id_counter += 1;
2318 if (netif_msg_tx_queued(port)) {
2319 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2320 ehea_dump(swqe, 512, "swqe");
2323 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2324 netif_stop_queue(dev);
2325 swqe->tx_control |= EHEA_SWQE_PURGE;
2328 ehea_post_swqe(pr->qp, swqe);
2330 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2331 spin_lock_irqsave(&pr->netif_queue, flags);
2332 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2333 pr->p_stats.queue_stopped++;
2334 netif_stop_queue(dev);
2335 pr->queue_stopped = 1;
2337 spin_unlock_irqrestore(&pr->netif_queue, flags);
2339 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
2340 spin_unlock(&pr->xmit_lock);
2342 return NETDEV_TX_OK;
2345 static void ehea_vlan_rx_register(struct net_device *dev,
2346 struct vlan_group *grp)
2348 struct ehea_port *port = netdev_priv(dev);
2349 struct ehea_adapter *adapter = port->adapter;
2350 struct hcp_ehea_port_cb1 *cb1;
2355 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2357 ehea_error("no mem for cb1");
2361 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2362 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2363 if (hret != H_SUCCESS)
2364 ehea_error("modify_ehea_port failed");
2366 free_page((unsigned long)cb1);
2371 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2373 struct ehea_port *port = netdev_priv(dev);
2374 struct ehea_adapter *adapter = port->adapter;
2375 struct hcp_ehea_port_cb1 *cb1;
2379 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2381 ehea_error("no mem for cb1");
2385 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2386 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2387 if (hret != H_SUCCESS) {
2388 ehea_error("query_ehea_port failed");
2393 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2395 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2396 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2397 if (hret != H_SUCCESS)
2398 ehea_error("modify_ehea_port failed");
2400 free_page((unsigned long)cb1);
2404 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2406 struct ehea_port *port = netdev_priv(dev);
2407 struct ehea_adapter *adapter = port->adapter;
2408 struct hcp_ehea_port_cb1 *cb1;
2412 vlan_group_set_device(port->vgrp, vid, NULL);
2414 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2416 ehea_error("no mem for cb1");
2420 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2421 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2422 if (hret != H_SUCCESS) {
2423 ehea_error("query_ehea_port failed");
2428 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2430 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2431 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2432 if (hret != H_SUCCESS)
2433 ehea_error("modify_ehea_port failed");
2435 free_page((unsigned long)cb1);
2438 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2444 struct hcp_modify_qp_cb0 *cb0;
2446 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2452 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2453 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2454 if (hret != H_SUCCESS) {
2455 ehea_error("query_ehea_qp failed (1)");
2459 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2460 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2461 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2462 &dummy64, &dummy64, &dummy16, &dummy16);
2463 if (hret != H_SUCCESS) {
2464 ehea_error("modify_ehea_qp failed (1)");
2468 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2469 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2470 if (hret != H_SUCCESS) {
2471 ehea_error("query_ehea_qp failed (2)");
2475 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2476 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2477 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2478 &dummy64, &dummy64, &dummy16, &dummy16);
2479 if (hret != H_SUCCESS) {
2480 ehea_error("modify_ehea_qp failed (2)");
2484 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2485 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2486 if (hret != H_SUCCESS) {
2487 ehea_error("query_ehea_qp failed (3)");
2491 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2492 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2493 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2494 &dummy64, &dummy64, &dummy16, &dummy16);
2495 if (hret != H_SUCCESS) {
2496 ehea_error("modify_ehea_qp failed (3)");
2500 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2501 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2502 if (hret != H_SUCCESS) {
2503 ehea_error("query_ehea_qp failed (4)");
2509 free_page((unsigned long)cb0);
2513 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2517 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2518 enum ehea_eq_type eq_type = EHEA_EQ;
2520 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2521 EHEA_MAX_ENTRIES_EQ, 1);
2524 ehea_error("ehea_create_eq failed (qp_eq)");
2528 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2529 pr_cfg.max_entries_scq = sq_entries * 2;
2530 pr_cfg.max_entries_sq = sq_entries;
2531 pr_cfg.max_entries_rq1 = rq1_entries;
2532 pr_cfg.max_entries_rq2 = rq2_entries;
2533 pr_cfg.max_entries_rq3 = rq3_entries;
2535 pr_cfg_small_rx.max_entries_rcq = 1;
2536 pr_cfg_small_rx.max_entries_scq = sq_entries;
2537 pr_cfg_small_rx.max_entries_sq = sq_entries;
2538 pr_cfg_small_rx.max_entries_rq1 = 1;
2539 pr_cfg_small_rx.max_entries_rq2 = 1;
2540 pr_cfg_small_rx.max_entries_rq3 = 1;
2542 for (i = 0; i < def_qps; i++) {
2543 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2547 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2548 ret = ehea_init_port_res(port, &port->port_res[i],
2549 &pr_cfg_small_rx, i);
2558 ehea_clean_portres(port, &port->port_res[i]);
2561 ehea_destroy_eq(port->qp_eq);
2565 static int ehea_clean_all_portres(struct ehea_port *port)
2570 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2571 ret |= ehea_clean_portres(port, &port->port_res[i]);
2573 ret |= ehea_destroy_eq(port->qp_eq);
2578 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2580 if (adapter->active_ports)
2583 ehea_rem_mr(&adapter->mr);
2586 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2588 if (adapter->active_ports)
2591 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2594 static int ehea_up(struct net_device *dev)
2597 struct ehea_port *port = netdev_priv(dev);
2599 if (port->state == EHEA_PORT_UP)
2602 ret = ehea_port_res_setup(port, port->num_def_qps,
2603 port->num_add_tx_qps);
2605 ehea_error("port_res_failed");
2609 /* Set default QP for this port */
2610 ret = ehea_configure_port(port);
2612 ehea_error("ehea_configure_port failed. ret:%d", ret);
2616 ret = ehea_reg_interrupts(dev);
2618 ehea_error("reg_interrupts failed. ret:%d", ret);
2622 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2623 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2625 ehea_error("activate_qp failed");
2630 for (i = 0; i < port->num_def_qps; i++) {
2631 ret = ehea_fill_port_res(&port->port_res[i]);
2633 ehea_error("out_free_irqs");
2638 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2644 port->state = EHEA_PORT_UP;
2650 ehea_free_interrupts(dev);
2653 ehea_clean_all_portres(port);
2656 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2658 ehea_update_bcmc_registrations();
2659 ehea_update_firmware_handles();
2664 static void port_napi_disable(struct ehea_port *port)
2668 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2669 napi_disable(&port->port_res[i].napi);
2672 static void port_napi_enable(struct ehea_port *port)
2676 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2677 napi_enable(&port->port_res[i].napi);
2680 static int ehea_open(struct net_device *dev)
2683 struct ehea_port *port = netdev_priv(dev);
2685 mutex_lock(&port->port_lock);
2687 if (netif_msg_ifup(port))
2688 ehea_info("enabling port %s", dev->name);
2692 port_napi_enable(port);
2693 netif_start_queue(dev);
2696 init_waitqueue_head(&port->swqe_avail_wq);
2697 init_waitqueue_head(&port->restart_wq);
2699 mutex_unlock(&port->port_lock);
2704 static int ehea_down(struct net_device *dev)
2707 struct ehea_port *port = netdev_priv(dev);
2709 if (port->state == EHEA_PORT_DOWN)
2712 ehea_drop_multicast_list(dev);
2713 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2715 ehea_free_interrupts(dev);
2717 port->state = EHEA_PORT_DOWN;
2719 ehea_update_bcmc_registrations();
2721 ret = ehea_clean_all_portres(port);
2723 ehea_info("Failed freeing resources for %s. ret=%i",
2726 ehea_update_firmware_handles();
2731 static int ehea_stop(struct net_device *dev)
2734 struct ehea_port *port = netdev_priv(dev);
2736 if (netif_msg_ifdown(port))
2737 ehea_info("disabling port %s", dev->name);
2739 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2740 cancel_work_sync(&port->reset_task);
2741 mutex_lock(&port->port_lock);
2742 netif_stop_queue(dev);
2743 port_napi_disable(port);
2744 ret = ehea_down(dev);
2745 mutex_unlock(&port->port_lock);
2746 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2750 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2752 struct ehea_qp qp = *orig_qp;
2753 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2754 struct ehea_swqe *swqe;
2758 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2759 swqe = ehea_get_swqe(&qp, &wqe_index);
2760 swqe->tx_control |= EHEA_SWQE_PURGE;
2764 static void ehea_flush_sq(struct ehea_port *port)
2768 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2769 struct ehea_port_res *pr = &port->port_res[i];
2770 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2773 ret = wait_event_timeout(port->swqe_avail_wq,
2774 atomic_read(&pr->swqe_avail) >= swqe_max,
2775 msecs_to_jiffies(100));
2778 ehea_error("WARNING: sq not flushed completely");
2784 int ehea_stop_qps(struct net_device *dev)
2786 struct ehea_port *port = netdev_priv(dev);
2787 struct ehea_adapter *adapter = port->adapter;
2788 struct hcp_modify_qp_cb0 *cb0;
2796 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2802 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2803 struct ehea_port_res *pr = &port->port_res[i];
2804 struct ehea_qp *qp = pr->qp;
2806 /* Purge send queue */
2809 /* Disable queue pair */
2810 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2811 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2813 if (hret != H_SUCCESS) {
2814 ehea_error("query_ehea_qp failed (1)");
2818 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2819 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2821 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2822 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2824 &dummy64, &dummy16, &dummy16);
2825 if (hret != H_SUCCESS) {
2826 ehea_error("modify_ehea_qp failed (1)");
2830 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2831 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2833 if (hret != H_SUCCESS) {
2834 ehea_error("query_ehea_qp failed (2)");
2838 /* deregister shared memory regions */
2839 dret = ehea_rem_smrs(pr);
2841 ehea_error("unreg shared memory region failed");
2848 free_page((unsigned long)cb0);
2853 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2855 struct ehea_qp qp = *orig_qp;
2856 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2857 struct ehea_rwqe *rwqe;
2858 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2859 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2860 struct sk_buff *skb;
2861 u32 lkey = pr->recv_mr.lkey;
2867 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2868 rwqe = ehea_get_next_rwqe(&qp, 2);
2869 rwqe->sg_list[0].l_key = lkey;
2870 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2871 skb = skba_rq2[index];
2873 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2876 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2877 rwqe = ehea_get_next_rwqe(&qp, 3);
2878 rwqe->sg_list[0].l_key = lkey;
2879 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2880 skb = skba_rq3[index];
2882 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2886 int ehea_restart_qps(struct net_device *dev)
2888 struct ehea_port *port = netdev_priv(dev);
2889 struct ehea_adapter *adapter = port->adapter;
2893 struct hcp_modify_qp_cb0 *cb0;
2898 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2904 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2905 struct ehea_port_res *pr = &port->port_res[i];
2906 struct ehea_qp *qp = pr->qp;
2908 ret = ehea_gen_smrs(pr);
2910 ehea_error("creation of shared memory regions failed");
2914 ehea_update_rqs(qp, pr);
2916 /* Enable queue pair */
2917 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2918 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2920 if (hret != H_SUCCESS) {
2921 ehea_error("query_ehea_qp failed (1)");
2925 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2926 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2928 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2929 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2931 &dummy64, &dummy16, &dummy16);
2932 if (hret != H_SUCCESS) {
2933 ehea_error("modify_ehea_qp failed (1)");
2937 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2938 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2940 if (hret != H_SUCCESS) {
2941 ehea_error("query_ehea_qp failed (2)");
2945 /* refill entire queue */
2946 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2947 ehea_refill_rq2(pr, 0);
2948 ehea_refill_rq3(pr, 0);
2951 free_page((unsigned long)cb0);
2956 static void ehea_reset_port(struct work_struct *work)
2959 struct ehea_port *port =
2960 container_of(work, struct ehea_port, reset_task);
2961 struct net_device *dev = port->netdev;
2963 mutex_lock(&dlpar_mem_lock);
2965 mutex_lock(&port->port_lock);
2966 netif_stop_queue(dev);
2968 port_napi_disable(port);
2976 ehea_set_multicast_list(dev);
2978 if (netif_msg_timer(port))
2979 ehea_info("Device %s resetted successfully", dev->name);
2981 port_napi_enable(port);
2983 netif_wake_queue(dev);
2985 mutex_unlock(&port->port_lock);
2986 mutex_unlock(&dlpar_mem_lock);
2989 static void ehea_rereg_mrs(struct work_struct *work)
2992 struct ehea_adapter *adapter;
2994 ehea_info("LPAR memory changed - re-initializing driver");
2996 list_for_each_entry(adapter, &adapter_list, list)
2997 if (adapter->active_ports) {
2998 /* Shutdown all ports */
2999 for (i = 0; i < EHEA_MAX_PORTS; i++) {
3000 struct ehea_port *port = adapter->port[i];
3001 struct net_device *dev;
3008 if (dev->flags & IFF_UP) {
3009 mutex_lock(&port->port_lock);
3010 netif_stop_queue(dev);
3011 ehea_flush_sq(port);
3012 ret = ehea_stop_qps(dev);
3014 mutex_unlock(&port->port_lock);
3017 port_napi_disable(port);
3018 mutex_unlock(&port->port_lock);
3020 reset_sq_restart_flag(port);
3023 /* Unregister old memory region */
3024 ret = ehea_rem_mr(&adapter->mr);
3026 ehea_error("unregister MR failed - driver"
3032 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3034 list_for_each_entry(adapter, &adapter_list, list)
3035 if (adapter->active_ports) {
3036 /* Register new memory region */
3037 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
3039 ehea_error("register MR failed - driver"
3044 /* Restart all ports */
3045 for (i = 0; i < EHEA_MAX_PORTS; i++) {
3046 struct ehea_port *port = adapter->port[i];
3049 struct net_device *dev = port->netdev;
3051 if (dev->flags & IFF_UP) {
3052 mutex_lock(&port->port_lock);
3053 port_napi_enable(port);
3054 ret = ehea_restart_qps(dev);
3057 netif_wake_queue(dev);
3058 mutex_unlock(&port->port_lock);
3063 ehea_info("re-initializing driver complete");
3068 static void ehea_tx_watchdog(struct net_device *dev)
3070 struct ehea_port *port = netdev_priv(dev);
3072 if (netif_carrier_ok(dev) &&
3073 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
3074 ehea_schedule_port_reset(port);
3077 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3079 struct hcp_query_ehea *cb;
3083 cb = (void *)get_zeroed_page(GFP_KERNEL);
3089 hret = ehea_h_query_ehea(adapter->handle, cb);
3091 if (hret != H_SUCCESS) {
3096 adapter->max_mc_mac = cb->max_mc_mac - 1;
3100 free_page((unsigned long)cb);
3105 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
3107 struct hcp_ehea_port_cb4 *cb4;
3113 /* (Try to) enable *jumbo frames */
3114 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
3116 ehea_error("no mem for cb4");
3120 hret = ehea_h_query_ehea_port(port->adapter->handle,
3121 port->logical_port_id,
3123 H_PORT_CB4_JUMBO, cb4);
3124 if (hret == H_SUCCESS) {
3125 if (cb4->jumbo_frame)
3128 cb4->jumbo_frame = 1;
3129 hret = ehea_h_modify_ehea_port(port->adapter->
3136 if (hret == H_SUCCESS)
3142 free_page((unsigned long)cb4);
3148 static ssize_t ehea_show_port_id(struct device *dev,
3149 struct device_attribute *attr, char *buf)
3151 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3152 return sprintf(buf, "%d", port->logical_port_id);
3155 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3158 static void __devinit logical_port_release(struct device *dev)
3160 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3161 of_node_put(port->ofdev.dev.of_node);
3164 static struct device *ehea_register_port(struct ehea_port *port,
3165 struct device_node *dn)
3169 port->ofdev.dev.of_node = of_node_get(dn);
3170 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3171 port->ofdev.dev.bus = &ibmebus_bus_type;
3173 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
3174 port->ofdev.dev.release = logical_port_release;
3176 ret = of_device_register(&port->ofdev);
3178 ehea_error("failed to register device. ret=%d", ret);
3182 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3184 ehea_error("failed to register attributes, ret=%d", ret);
3185 goto out_unreg_of_dev;
3188 return &port->ofdev.dev;
3191 of_device_unregister(&port->ofdev);
3196 static void ehea_unregister_port(struct ehea_port *port)
3198 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3199 of_device_unregister(&port->ofdev);
3202 static const struct net_device_ops ehea_netdev_ops = {
3203 .ndo_open = ehea_open,
3204 .ndo_stop = ehea_stop,
3205 .ndo_start_xmit = ehea_start_xmit,
3206 #ifdef CONFIG_NET_POLL_CONTROLLER
3207 .ndo_poll_controller = ehea_netpoll,
3209 .ndo_get_stats = ehea_get_stats,
3210 .ndo_set_mac_address = ehea_set_mac_addr,
3211 .ndo_validate_addr = eth_validate_addr,
3212 .ndo_set_multicast_list = ehea_set_multicast_list,
3213 .ndo_change_mtu = ehea_change_mtu,
3214 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3215 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
3216 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3217 .ndo_tx_timeout = ehea_tx_watchdog,
3220 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3221 u32 logical_port_id,
3222 struct device_node *dn)
3225 struct net_device *dev;
3226 struct ehea_port *port;
3227 struct device *port_dev;
3230 /* allocate memory for the port structures */
3231 dev = alloc_etherdev(sizeof(struct ehea_port));
3234 ehea_error("no mem for net_device");
3239 port = netdev_priv(dev);
3241 mutex_init(&port->port_lock);
3242 port->state = EHEA_PORT_DOWN;
3243 port->sig_comp_iv = sq_entries / 10;
3245 port->adapter = adapter;
3247 port->logical_port_id = logical_port_id;
3249 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3251 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3252 if (!port->mc_list) {
3254 goto out_free_ethdev;
3257 INIT_LIST_HEAD(&port->mc_list->list);
3259 ret = ehea_sense_port_attr(port);
3261 goto out_free_mc_list;
3263 port_dev = ehea_register_port(port, dn);
3265 goto out_free_mc_list;
3267 SET_NETDEV_DEV(dev, port_dev);
3269 /* initialize net_device structure */
3270 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3272 dev->netdev_ops = &ehea_netdev_ops;
3273 ehea_set_ethtool_ops(dev);
3275 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3276 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3277 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3279 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3281 INIT_WORK(&port->reset_task, ehea_reset_port);
3283 ret = register_netdev(dev);
3285 ehea_error("register_netdev failed. ret=%d", ret);
3286 goto out_unreg_port;
3289 port->lro_max_aggr = lro_max_aggr;
3291 ret = ehea_get_jumboframe_status(port, &jumbo);
3293 ehea_error("failed determining jumbo frame status for %s",
3294 port->netdev->name);
3296 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3297 jumbo == 1 ? "en" : "dis");
3299 adapter->active_ports++;
3304 ehea_unregister_port(port);
3307 kfree(port->mc_list);
3313 ehea_error("setting up logical port with id=%d failed, ret=%d",
3314 logical_port_id, ret);
3318 static void ehea_shutdown_single_port(struct ehea_port *port)
3320 struct ehea_adapter *adapter = port->adapter;
3321 unregister_netdev(port->netdev);
3322 ehea_unregister_port(port);
3323 kfree(port->mc_list);
3324 free_netdev(port->netdev);
3325 adapter->active_ports--;
3328 static int ehea_setup_ports(struct ehea_adapter *adapter)
3330 struct device_node *lhea_dn;
3331 struct device_node *eth_dn = NULL;
3333 const u32 *dn_log_port_id;
3336 lhea_dn = adapter->ofdev->dev.of_node;
3337 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3339 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3341 if (!dn_log_port_id) {
3342 ehea_error("bad device node: eth_dn name=%s",
3347 if (ehea_add_adapter_mr(adapter)) {
3348 ehea_error("creating MR failed");
3349 of_node_put(eth_dn);
3353 adapter->port[i] = ehea_setup_single_port(adapter,
3356 if (adapter->port[i])
3357 ehea_info("%s -> logical port id #%d",
3358 adapter->port[i]->netdev->name,
3361 ehea_remove_adapter_mr(adapter);
3368 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3369 u32 logical_port_id)
3371 struct device_node *lhea_dn;
3372 struct device_node *eth_dn = NULL;
3373 const u32 *dn_log_port_id;
3375 lhea_dn = adapter->ofdev->dev.of_node;
3376 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3378 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3381 if (*dn_log_port_id == logical_port_id)
3388 static ssize_t ehea_probe_port(struct device *dev,
3389 struct device_attribute *attr,
3390 const char *buf, size_t count)
3392 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3393 struct ehea_port *port;
3394 struct device_node *eth_dn = NULL;
3397 u32 logical_port_id;
3399 sscanf(buf, "%d", &logical_port_id);
3401 port = ehea_get_port(adapter, logical_port_id);
3404 ehea_info("adding port with logical port id=%d failed. port "
3405 "already configured as %s.", logical_port_id,
3406 port->netdev->name);
3410 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3413 ehea_info("no logical port with id %d found", logical_port_id);
3417 if (ehea_add_adapter_mr(adapter)) {
3418 ehea_error("creating MR failed");
3422 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3424 of_node_put(eth_dn);
3427 for (i = 0; i < EHEA_MAX_PORTS; i++)
3428 if (!adapter->port[i]) {
3429 adapter->port[i] = port;
3433 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3436 ehea_remove_adapter_mr(adapter);
3440 return (ssize_t) count;
3443 static ssize_t ehea_remove_port(struct device *dev,
3444 struct device_attribute *attr,
3445 const char *buf, size_t count)
3447 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3448 struct ehea_port *port;
3450 u32 logical_port_id;
3452 sscanf(buf, "%d", &logical_port_id);
3454 port = ehea_get_port(adapter, logical_port_id);
3457 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3460 ehea_shutdown_single_port(port);
3462 for (i = 0; i < EHEA_MAX_PORTS; i++)
3463 if (adapter->port[i] == port) {
3464 adapter->port[i] = NULL;
3468 ehea_error("removing port with logical port id=%d failed. port "
3469 "not configured.", logical_port_id);
3473 ehea_remove_adapter_mr(adapter);
3475 return (ssize_t) count;
3478 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3479 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3481 int ehea_create_device_sysfs(struct platform_device *dev)
3483 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3487 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3492 void ehea_remove_device_sysfs(struct platform_device *dev)
3494 device_remove_file(&dev->dev, &dev_attr_probe_port);
3495 device_remove_file(&dev->dev, &dev_attr_remove_port);
3498 static int __devinit ehea_probe_adapter(struct platform_device *dev,
3499 const struct of_device_id *id)
3501 struct ehea_adapter *adapter;
3502 const u64 *adapter_handle;
3505 if (!dev || !dev->dev.of_node) {
3506 ehea_error("Invalid ibmebus device probed");
3510 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3513 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3517 list_add(&adapter->list, &adapter_list);
3519 adapter->ofdev = dev;
3521 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
3524 adapter->handle = *adapter_handle;
3526 if (!adapter->handle) {
3527 dev_err(&dev->dev, "failed getting handle for adapter"
3528 " '%s'\n", dev->dev.of_node->full_name);
3533 adapter->pd = EHEA_PD_ID;
3535 dev_set_drvdata(&dev->dev, adapter);
3538 /* initialize adapter and ports */
3539 /* get adapter properties */
3540 ret = ehea_sense_adapter_attr(adapter);
3542 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3546 adapter->neq = ehea_create_eq(adapter,
3547 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3548 if (!adapter->neq) {
3550 dev_err(&dev->dev, "NEQ creation failed\n");
3554 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3555 (unsigned long)adapter);
3557 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3558 ehea_interrupt_neq, IRQF_DISABLED,
3559 "ehea_neq", adapter);
3561 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3565 ret = ehea_create_device_sysfs(dev);
3569 ret = ehea_setup_ports(adapter);
3571 dev_err(&dev->dev, "setup_ports failed\n");
3572 goto out_rem_dev_sysfs;
3579 ehea_remove_device_sysfs(dev);
3582 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3585 ehea_destroy_eq(adapter->neq);
3588 list_del(&adapter->list);
3592 ehea_update_firmware_handles();
3597 static int __devexit ehea_remove(struct platform_device *dev)
3599 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
3602 for (i = 0; i < EHEA_MAX_PORTS; i++)
3603 if (adapter->port[i]) {
3604 ehea_shutdown_single_port(adapter->port[i]);
3605 adapter->port[i] = NULL;
3608 ehea_remove_device_sysfs(dev);
3610 flush_scheduled_work();
3612 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3613 tasklet_kill(&adapter->neq_tasklet);
3615 ehea_destroy_eq(adapter->neq);
3616 ehea_remove_adapter_mr(adapter);
3617 list_del(&adapter->list);
3620 ehea_update_firmware_handles();
3625 void ehea_crash_handler(void)
3629 if (ehea_fw_handles.arr)
3630 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3631 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3632 ehea_fw_handles.arr[i].fwh,
3635 if (ehea_bcmc_regs.arr)
3636 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3637 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3638 ehea_bcmc_regs.arr[i].port_id,
3639 ehea_bcmc_regs.arr[i].reg_type,
3640 ehea_bcmc_regs.arr[i].macaddr,
3644 static int ehea_mem_notifier(struct notifier_block *nb,
3645 unsigned long action, void *data)
3647 int ret = NOTIFY_BAD;
3648 struct memory_notify *arg = data;
3650 mutex_lock(&dlpar_mem_lock);
3653 case MEM_CANCEL_OFFLINE:
3654 ehea_info("memory offlining canceled");
3655 /* Readd canceled memory block */
3657 ehea_info("memory is going online");
3658 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3659 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3661 ehea_rereg_mrs(NULL);
3663 case MEM_GOING_OFFLINE:
3664 ehea_info("memory is going offline");
3665 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3666 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3668 ehea_rereg_mrs(NULL);
3674 ehea_update_firmware_handles();
3678 mutex_unlock(&dlpar_mem_lock);
3682 static struct notifier_block ehea_mem_nb = {
3683 .notifier_call = ehea_mem_notifier,
3686 static int ehea_reboot_notifier(struct notifier_block *nb,
3687 unsigned long action, void *unused)
3689 if (action == SYS_RESTART) {
3690 ehea_info("Reboot: freeing all eHEA resources");
3691 ibmebus_unregister_driver(&ehea_driver);
3696 static struct notifier_block ehea_reboot_nb = {
3697 .notifier_call = ehea_reboot_notifier,
3700 static int check_module_parm(void)
3704 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3705 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3706 ehea_info("Bad parameter: rq1_entries");
3709 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3710 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3711 ehea_info("Bad parameter: rq2_entries");
3714 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3715 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3716 ehea_info("Bad parameter: rq3_entries");
3719 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3720 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3721 ehea_info("Bad parameter: sq_entries");
3728 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3731 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3734 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3735 ehea_show_capabilities, NULL);
3737 int __init ehea_module_init(void)
3741 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3745 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3746 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3747 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3749 mutex_init(&ehea_fw_handles.lock);
3750 spin_lock_init(&ehea_bcmc_regs.lock);
3752 ret = check_module_parm();
3756 ret = ehea_create_busmap();
3760 ret = register_reboot_notifier(&ehea_reboot_nb);
3762 ehea_info("failed registering reboot notifier");
3764 ret = register_memory_notifier(&ehea_mem_nb);
3766 ehea_info("failed registering memory remove notifier");
3768 ret = crash_shutdown_register(ehea_crash_handler);
3770 ehea_info("failed registering crash handler");
3772 ret = ibmebus_register_driver(&ehea_driver);
3774 ehea_error("failed registering eHEA device driver on ebus");
3778 ret = driver_create_file(&ehea_driver.driver,
3779 &driver_attr_capabilities);
3781 ehea_error("failed to register capabilities attribute, ret=%d",
3789 ibmebus_unregister_driver(&ehea_driver);
3791 unregister_memory_notifier(&ehea_mem_nb);
3792 unregister_reboot_notifier(&ehea_reboot_nb);
3793 crash_shutdown_unregister(ehea_crash_handler);
3798 static void __exit ehea_module_exit(void)
3802 flush_scheduled_work();
3803 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3804 ibmebus_unregister_driver(&ehea_driver);
3805 unregister_reboot_notifier(&ehea_reboot_nb);
3806 ret = crash_shutdown_unregister(ehea_crash_handler);
3808 ehea_info("failed unregistering crash handler");
3809 unregister_memory_notifier(&ehea_mem_nb);
3810 kfree(ehea_fw_handles.arr);
3811 kfree(ehea_bcmc_regs.arr);
3812 ehea_destroy_busmap();
3815 module_init(ehea_module_init);
3816 module_exit(ehea_module_exit);