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 of_device *dev,
111 const struct of_device_id *id);
113 static int __devexit ehea_remove(struct of_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 = kzalloc(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 = kzalloc(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;
336 memset(stats, 0, sizeof(*stats));
338 cb2 = (void *)get_zeroed_page(GFP_ATOMIC);
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;
360 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
361 tx_packets += port->port_res[i].tx_packets;
363 stats->tx_packets = tx_packets;
364 stats->multicast = cb2->rxmcp;
365 stats->rx_errors = cb2->rxuerr;
366 stats->rx_bytes = cb2->rxo;
367 stats->tx_bytes = cb2->txo;
368 stats->rx_packets = rx_packets;
371 free_page((unsigned long)cb2);
376 static void ehea_refill_rq1(struct ehea_port_res *pr, int index, int nr_of_wqes)
378 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
379 struct net_device *dev = pr->port->netdev;
380 int max_index_mask = pr->rq1_skba.len - 1;
381 int fill_wqes = pr->rq1_skba.os_skbs + nr_of_wqes;
385 pr->rq1_skba.os_skbs = 0;
387 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
389 pr->rq1_skba.index = index;
390 pr->rq1_skba.os_skbs = fill_wqes;
394 for (i = 0; i < fill_wqes; i++) {
395 if (!skb_arr_rq1[index]) {
396 skb_arr_rq1[index] = netdev_alloc_skb(dev,
398 if (!skb_arr_rq1[index]) {
399 pr->rq1_skba.os_skbs = fill_wqes - i;
404 index &= max_index_mask;
412 ehea_update_rq1a(pr->qp, adder);
415 static void ehea_init_fill_rq1(struct ehea_port_res *pr, int nr_rq1a)
417 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
418 struct net_device *dev = pr->port->netdev;
421 for (i = 0; i < pr->rq1_skba.len; i++) {
422 skb_arr_rq1[i] = netdev_alloc_skb(dev, EHEA_L_PKT_SIZE);
427 ehea_update_rq1a(pr->qp, nr_rq1a);
430 static int ehea_refill_rq_def(struct ehea_port_res *pr,
431 struct ehea_q_skb_arr *q_skba, int rq_nr,
432 int num_wqes, int wqe_type, int packet_size)
434 struct net_device *dev = pr->port->netdev;
435 struct ehea_qp *qp = pr->qp;
436 struct sk_buff **skb_arr = q_skba->arr;
437 struct ehea_rwqe *rwqe;
438 int i, index, max_index_mask, fill_wqes;
442 fill_wqes = q_skba->os_skbs + num_wqes;
445 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
446 q_skba->os_skbs = fill_wqes;
450 index = q_skba->index;
451 max_index_mask = q_skba->len - 1;
452 for (i = 0; i < fill_wqes; i++) {
456 skb = netdev_alloc_skb_ip_align(dev, packet_size);
458 q_skba->os_skbs = fill_wqes - i;
459 if (q_skba->os_skbs == q_skba->len - 2) {
460 ehea_info("%s: rq%i ran dry - no mem for skb",
461 pr->port->netdev->name, rq_nr);
467 skb_arr[index] = skb;
468 tmp_addr = ehea_map_vaddr(skb->data);
469 if (tmp_addr == -1) {
471 q_skba->os_skbs = fill_wqes - i;
476 rwqe = ehea_get_next_rwqe(qp, rq_nr);
477 rwqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, wqe_type)
478 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, index);
479 rwqe->sg_list[0].l_key = pr->recv_mr.lkey;
480 rwqe->sg_list[0].vaddr = tmp_addr;
481 rwqe->sg_list[0].len = packet_size;
482 rwqe->data_segments = 1;
485 index &= max_index_mask;
489 q_skba->index = index;
496 ehea_update_rq2a(pr->qp, adder);
498 ehea_update_rq3a(pr->qp, adder);
504 static int ehea_refill_rq2(struct ehea_port_res *pr, int nr_of_wqes)
506 return ehea_refill_rq_def(pr, &pr->rq2_skba, 2,
507 nr_of_wqes, EHEA_RWQE2_TYPE,
512 static int ehea_refill_rq3(struct ehea_port_res *pr, int nr_of_wqes)
514 return ehea_refill_rq_def(pr, &pr->rq3_skba, 3,
515 nr_of_wqes, EHEA_RWQE3_TYPE,
516 EHEA_MAX_PACKET_SIZE);
519 static inline int ehea_check_cqe(struct ehea_cqe *cqe, int *rq_num)
521 *rq_num = (cqe->type & EHEA_CQE_TYPE_RQ) >> 5;
522 if ((cqe->status & EHEA_CQE_STAT_ERR_MASK) == 0)
524 if (((cqe->status & EHEA_CQE_STAT_ERR_TCP) != 0) &&
525 (cqe->header_length == 0))
530 static inline void ehea_fill_skb(struct net_device *dev,
531 struct sk_buff *skb, struct ehea_cqe *cqe)
533 int length = cqe->num_bytes_transfered - 4; /*remove CRC */
535 skb_put(skb, length);
536 skb->ip_summed = CHECKSUM_UNNECESSARY;
537 skb->protocol = eth_type_trans(skb, dev);
540 static inline struct sk_buff *get_skb_by_index(struct sk_buff **skb_array,
542 struct ehea_cqe *cqe)
544 int skb_index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
555 prefetchw(pref + EHEA_CACHE_LINE);
557 pref = (skb_array[x]->data);
559 prefetch(pref + EHEA_CACHE_LINE);
560 prefetch(pref + EHEA_CACHE_LINE * 2);
561 prefetch(pref + EHEA_CACHE_LINE * 3);
564 skb = skb_array[skb_index];
565 skb_array[skb_index] = NULL;
569 static inline struct sk_buff *get_skb_by_index_ll(struct sk_buff **skb_array,
570 int arr_len, int wqe_index)
582 prefetchw(pref + EHEA_CACHE_LINE);
584 pref = (skb_array[x]->data);
586 prefetchw(pref + EHEA_CACHE_LINE);
589 skb = skb_array[wqe_index];
590 skb_array[wqe_index] = NULL;
594 static int ehea_treat_poll_error(struct ehea_port_res *pr, int rq,
595 struct ehea_cqe *cqe, int *processed_rq2,
600 if (cqe->status & EHEA_CQE_STAT_ERR_TCP)
601 pr->p_stats.err_tcp_cksum++;
602 if (cqe->status & EHEA_CQE_STAT_ERR_IP)
603 pr->p_stats.err_ip_cksum++;
604 if (cqe->status & EHEA_CQE_STAT_ERR_CRC)
605 pr->p_stats.err_frame_crc++;
609 skb = get_skb_by_index(pr->rq2_skba.arr, pr->rq2_skba.len, cqe);
611 } else if (rq == 3) {
613 skb = get_skb_by_index(pr->rq3_skba.arr, pr->rq3_skba.len, cqe);
617 if (cqe->status & EHEA_CQE_STAT_FAT_ERR_MASK) {
618 if (netif_msg_rx_err(pr->port)) {
619 ehea_error("Critical receive error for QP %d. "
620 "Resetting port.", pr->qp->init_attr.qp_nr);
621 ehea_dump(cqe, sizeof(*cqe), "CQE");
623 ehea_schedule_port_reset(pr->port);
630 static int get_skb_hdr(struct sk_buff *skb, void **iphdr,
631 void **tcph, u64 *hdr_flags, void *priv)
633 struct ehea_cqe *cqe = priv;
637 /* non tcp/udp packets */
638 if (!cqe->header_length)
642 skb_reset_network_header(skb);
644 if (iph->protocol != IPPROTO_TCP)
647 ip_len = ip_hdrlen(skb);
648 skb_set_transport_header(skb, ip_len);
649 *tcph = tcp_hdr(skb);
651 /* check if ip header and tcp header are complete */
652 if (ntohs(iph->tot_len) < ip_len + tcp_hdrlen(skb))
655 *hdr_flags = LRO_IPV4 | LRO_TCP;
661 static void ehea_proc_skb(struct ehea_port_res *pr, struct ehea_cqe *cqe,
664 int vlan_extracted = ((cqe->status & EHEA_CQE_VLAN_TAG_XTRACT) &&
669 lro_vlan_hwaccel_receive_skb(&pr->lro_mgr, skb,
674 lro_receive_skb(&pr->lro_mgr, skb, cqe);
677 vlan_hwaccel_receive_skb(skb, pr->port->vgrp,
680 netif_receive_skb(skb);
684 static int ehea_proc_rwqes(struct net_device *dev,
685 struct ehea_port_res *pr,
688 struct ehea_port *port = pr->port;
689 struct ehea_qp *qp = pr->qp;
690 struct ehea_cqe *cqe;
692 struct sk_buff **skb_arr_rq1 = pr->rq1_skba.arr;
693 struct sk_buff **skb_arr_rq2 = pr->rq2_skba.arr;
694 struct sk_buff **skb_arr_rq3 = pr->rq3_skba.arr;
695 int skb_arr_rq1_len = pr->rq1_skba.len;
696 int skb_arr_rq2_len = pr->rq2_skba.len;
697 int skb_arr_rq3_len = pr->rq3_skba.len;
698 int processed, processed_rq1, processed_rq2, processed_rq3;
699 int wqe_index, last_wqe_index, rq, port_reset;
701 processed = processed_rq1 = processed_rq2 = processed_rq3 = 0;
704 cqe = ehea_poll_rq1(qp, &wqe_index);
705 while ((processed < budget) && cqe) {
709 if (netif_msg_rx_status(port))
710 ehea_dump(cqe, sizeof(*cqe), "CQE");
712 last_wqe_index = wqe_index;
714 if (!ehea_check_cqe(cqe, &rq)) {
717 skb = get_skb_by_index_ll(skb_arr_rq1,
720 if (unlikely(!skb)) {
721 if (netif_msg_rx_err(port))
722 ehea_error("LL rq1: skb=NULL");
724 skb = netdev_alloc_skb(dev,
729 skb_copy_to_linear_data(skb, ((char *)cqe) + 64,
730 cqe->num_bytes_transfered - 4);
731 ehea_fill_skb(dev, skb, cqe);
732 } else if (rq == 2) {
734 skb = get_skb_by_index(skb_arr_rq2,
735 skb_arr_rq2_len, cqe);
736 if (unlikely(!skb)) {
737 if (netif_msg_rx_err(port))
738 ehea_error("rq2: skb=NULL");
741 ehea_fill_skb(dev, skb, cqe);
745 skb = get_skb_by_index(skb_arr_rq3,
746 skb_arr_rq3_len, cqe);
747 if (unlikely(!skb)) {
748 if (netif_msg_rx_err(port))
749 ehea_error("rq3: skb=NULL");
752 ehea_fill_skb(dev, skb, cqe);
756 ehea_proc_skb(pr, cqe, skb);
758 pr->p_stats.poll_receive_errors++;
759 port_reset = ehea_treat_poll_error(pr, rq, cqe,
765 cqe = ehea_poll_rq1(qp, &wqe_index);
768 lro_flush_all(&pr->lro_mgr);
770 pr->rx_packets += processed;
772 ehea_refill_rq1(pr, last_wqe_index, processed_rq1);
773 ehea_refill_rq2(pr, processed_rq2);
774 ehea_refill_rq3(pr, processed_rq3);
779 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
782 struct ehea_cq *send_cq = pr->send_cq;
783 struct ehea_cqe *cqe;
784 int quota = my_quota;
790 cqe = ehea_poll_cq(send_cq);
791 while (cqe && (quota > 0)) {
792 ehea_inc_cq(send_cq);
796 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
797 ehea_error("Bad send completion status=0x%04X",
800 if (netif_msg_tx_err(pr->port))
801 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
803 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
804 ehea_error("Resetting port");
805 ehea_schedule_port_reset(pr->port);
810 if (netif_msg_tx_done(pr->port))
811 ehea_dump(cqe, sizeof(*cqe), "CQE");
813 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
814 == EHEA_SWQE2_TYPE)) {
816 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
817 skb = pr->sq_skba.arr[index];
819 pr->sq_skba.arr[index] = NULL;
822 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
825 cqe = ehea_poll_cq(send_cq);
828 ehea_update_feca(send_cq, cqe_counter);
829 atomic_add(swqe_av, &pr->swqe_avail);
831 spin_lock_irqsave(&pr->netif_queue, flags);
833 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
834 >= pr->swqe_refill_th)) {
835 netif_wake_queue(pr->port->netdev);
836 pr->queue_stopped = 0;
838 spin_unlock_irqrestore(&pr->netif_queue, flags);
843 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
844 #define EHEA_POLL_MAX_CQES 65535
846 static int ehea_poll(struct napi_struct *napi, int budget)
848 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
850 struct net_device *dev = pr->port->netdev;
851 struct ehea_cqe *cqe;
852 struct ehea_cqe *cqe_skb = NULL;
853 int force_irq, wqe_index;
856 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
857 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
860 rx += ehea_proc_rwqes(dev, pr, budget - rx);
862 while ((rx != budget) || force_irq) {
863 pr->poll_counter = 0;
866 ehea_reset_cq_ep(pr->recv_cq);
867 ehea_reset_cq_ep(pr->send_cq);
868 ehea_reset_cq_n1(pr->recv_cq);
869 ehea_reset_cq_n1(pr->send_cq);
870 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
871 cqe_skb = ehea_poll_cq(pr->send_cq);
873 if (!cqe && !cqe_skb)
876 if (!napi_reschedule(napi))
879 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
880 rx += ehea_proc_rwqes(dev, pr, budget - rx);
887 #ifdef CONFIG_NET_POLL_CONTROLLER
888 static void ehea_netpoll(struct net_device *dev)
890 struct ehea_port *port = netdev_priv(dev);
893 for (i = 0; i < port->num_def_qps; i++)
894 napi_schedule(&port->port_res[i].napi);
898 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
900 struct ehea_port_res *pr = param;
902 napi_schedule(&pr->napi);
907 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
909 struct ehea_port *port = param;
910 struct ehea_eqe *eqe;
913 u64 resource_type, aer, aerr;
916 eqe = ehea_poll_eq(port->qp_eq);
919 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
920 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
921 eqe->entry, qp_token);
923 qp = port->port_res[qp_token].qp;
925 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
928 if (resource_type == EHEA_AER_RESTYPE_QP) {
929 if ((aer & EHEA_AER_RESET_MASK) ||
930 (aerr & EHEA_AERR_RESET_MASK))
933 reset_port = 1; /* Reset in case of CQ or EQ error */
935 eqe = ehea_poll_eq(port->qp_eq);
939 ehea_error("Resetting port");
940 ehea_schedule_port_reset(port);
946 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
951 for (i = 0; i < EHEA_MAX_PORTS; i++)
952 if (adapter->port[i])
953 if (adapter->port[i]->logical_port_id == logical_port)
954 return adapter->port[i];
958 int ehea_sense_port_attr(struct ehea_port *port)
962 struct hcp_ehea_port_cb0 *cb0;
964 /* may be called via ehea_neq_tasklet() */
965 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
967 ehea_error("no mem for cb0");
972 hret = ehea_h_query_ehea_port(port->adapter->handle,
973 port->logical_port_id, H_PORT_CB0,
974 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
976 if (hret != H_SUCCESS) {
982 port->mac_addr = cb0->port_mac_addr << 16;
984 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
985 ret = -EADDRNOTAVAIL;
990 switch (cb0->port_speed) {
992 port->port_speed = EHEA_SPEED_10M;
993 port->full_duplex = 0;
996 port->port_speed = EHEA_SPEED_10M;
997 port->full_duplex = 1;
1000 port->port_speed = EHEA_SPEED_100M;
1001 port->full_duplex = 0;
1003 case H_SPEED_100M_F:
1004 port->port_speed = EHEA_SPEED_100M;
1005 port->full_duplex = 1;
1008 port->port_speed = EHEA_SPEED_1G;
1009 port->full_duplex = 1;
1012 port->port_speed = EHEA_SPEED_10G;
1013 port->full_duplex = 1;
1016 port->port_speed = 0;
1017 port->full_duplex = 0;
1022 port->num_mcs = cb0->num_default_qps;
1024 /* Number of default QPs */
1026 port->num_def_qps = cb0->num_default_qps;
1028 port->num_def_qps = 1;
1030 if (!port->num_def_qps) {
1035 port->num_tx_qps = num_tx_qps;
1037 if (port->num_def_qps >= port->num_tx_qps)
1038 port->num_add_tx_qps = 0;
1040 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
1044 if (ret || netif_msg_probe(port))
1045 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
1046 free_page((unsigned long)cb0);
1051 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1053 struct hcp_ehea_port_cb4 *cb4;
1057 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
1059 ehea_error("no mem for cb4");
1064 cb4->port_speed = port_speed;
1066 netif_carrier_off(port->netdev);
1068 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1069 port->logical_port_id,
1070 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1071 if (hret == H_SUCCESS) {
1072 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1074 hret = ehea_h_query_ehea_port(port->adapter->handle,
1075 port->logical_port_id,
1076 H_PORT_CB4, H_PORT_CB4_SPEED,
1078 if (hret == H_SUCCESS) {
1079 switch (cb4->port_speed) {
1081 port->port_speed = EHEA_SPEED_10M;
1082 port->full_duplex = 0;
1085 port->port_speed = EHEA_SPEED_10M;
1086 port->full_duplex = 1;
1088 case H_SPEED_100M_H:
1089 port->port_speed = EHEA_SPEED_100M;
1090 port->full_duplex = 0;
1092 case H_SPEED_100M_F:
1093 port->port_speed = EHEA_SPEED_100M;
1094 port->full_duplex = 1;
1097 port->port_speed = EHEA_SPEED_1G;
1098 port->full_duplex = 1;
1101 port->port_speed = EHEA_SPEED_10G;
1102 port->full_duplex = 1;
1105 port->port_speed = 0;
1106 port->full_duplex = 0;
1110 ehea_error("Failed sensing port speed");
1114 if (hret == H_AUTHORITY) {
1115 ehea_info("Hypervisor denied setting port speed");
1119 ehea_error("Failed setting port speed");
1122 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1123 netif_carrier_on(port->netdev);
1125 free_page((unsigned long)cb4);
1130 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1135 struct ehea_port *port;
1137 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1138 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1139 port = ehea_get_port(adapter, portnum);
1142 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1145 ehea_error("unknown portnum %x", portnum);
1149 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1150 if (!netif_carrier_ok(port->netdev)) {
1151 ret = ehea_sense_port_attr(port);
1153 ehea_error("failed resensing port "
1158 if (netif_msg_link(port))
1159 ehea_info("%s: Logical port up: %dMbps "
1163 port->full_duplex ==
1164 1 ? "Full" : "Half");
1166 netif_carrier_on(port->netdev);
1167 netif_wake_queue(port->netdev);
1170 if (netif_carrier_ok(port->netdev)) {
1171 if (netif_msg_link(port))
1172 ehea_info("%s: Logical port down",
1173 port->netdev->name);
1174 netif_carrier_off(port->netdev);
1175 netif_stop_queue(port->netdev);
1178 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1179 port->phy_link = EHEA_PHY_LINK_UP;
1180 if (netif_msg_link(port))
1181 ehea_info("%s: Physical port up",
1182 port->netdev->name);
1183 if (prop_carrier_state)
1184 netif_carrier_on(port->netdev);
1186 port->phy_link = EHEA_PHY_LINK_DOWN;
1187 if (netif_msg_link(port))
1188 ehea_info("%s: Physical port down",
1189 port->netdev->name);
1190 if (prop_carrier_state)
1191 netif_carrier_off(port->netdev);
1194 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1195 ehea_info("External switch port is primary port");
1197 ehea_info("External switch port is backup port");
1200 case EHEA_EC_ADAPTER_MALFUNC:
1201 ehea_error("Adapter malfunction");
1203 case EHEA_EC_PORT_MALFUNC:
1204 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1205 netif_carrier_off(port->netdev);
1206 netif_stop_queue(port->netdev);
1209 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
1214 static void ehea_neq_tasklet(unsigned long data)
1216 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1217 struct ehea_eqe *eqe;
1220 eqe = ehea_poll_eq(adapter->neq);
1221 ehea_debug("eqe=%p", eqe);
1224 ehea_debug("*eqe=%lx", eqe->entry);
1225 ehea_parse_eqe(adapter, eqe->entry);
1226 eqe = ehea_poll_eq(adapter->neq);
1227 ehea_debug("next eqe=%p", eqe);
1230 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1231 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1232 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1234 ehea_h_reset_events(adapter->handle,
1235 adapter->neq->fw_handle, event_mask);
1238 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1240 struct ehea_adapter *adapter = param;
1241 tasklet_hi_schedule(&adapter->neq_tasklet);
1246 static int ehea_fill_port_res(struct ehea_port_res *pr)
1249 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1251 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1252 - init_attr->act_nr_rwqes_rq2
1253 - init_attr->act_nr_rwqes_rq3 - 1);
1255 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1257 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1262 static int ehea_reg_interrupts(struct net_device *dev)
1264 struct ehea_port *port = netdev_priv(dev);
1265 struct ehea_port_res *pr;
1269 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1272 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1273 ehea_qp_aff_irq_handler,
1274 IRQF_DISABLED, port->int_aff_name, port);
1276 ehea_error("failed registering irq for qp_aff_irq_handler:"
1277 "ist=%X", port->qp_eq->attr.ist1);
1281 if (netif_msg_ifup(port))
1282 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1283 "registered", port->qp_eq->attr.ist1);
1286 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1287 pr = &port->port_res[i];
1288 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1289 "%s-queue%d", dev->name, i);
1290 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1291 ehea_recv_irq_handler,
1292 IRQF_DISABLED, pr->int_send_name,
1295 ehea_error("failed registering irq for ehea_queue "
1296 "port_res_nr:%d, ist=%X", i,
1300 if (netif_msg_ifup(port))
1301 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1302 "%d registered", pr->eq->attr.ist1, i);
1310 u32 ist = port->port_res[i].eq->attr.ist1;
1311 ibmebus_free_irq(ist, &port->port_res[i]);
1315 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1316 i = port->num_def_qps;
1322 static void ehea_free_interrupts(struct net_device *dev)
1324 struct ehea_port *port = netdev_priv(dev);
1325 struct ehea_port_res *pr;
1330 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1331 pr = &port->port_res[i];
1332 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1333 if (netif_msg_intr(port))
1334 ehea_info("free send irq for res %d with handle 0x%X",
1335 i, pr->eq->attr.ist1);
1338 /* associated events */
1339 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1340 if (netif_msg_intr(port))
1341 ehea_info("associated event interrupt for handle 0x%X freed",
1342 port->qp_eq->attr.ist1);
1345 static int ehea_configure_port(struct ehea_port *port)
1349 struct hcp_ehea_port_cb0 *cb0;
1352 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1356 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1357 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1358 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1359 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1360 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1361 PXLY_RC_VLAN_FILTER)
1362 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1364 for (i = 0; i < port->num_mcs; i++)
1366 cb0->default_qpn_arr[i] =
1367 port->port_res[i].qp->init_attr.qp_nr;
1369 cb0->default_qpn_arr[i] =
1370 port->port_res[0].qp->init_attr.qp_nr;
1372 if (netif_msg_ifup(port))
1373 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1375 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1376 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1378 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1379 port->logical_port_id,
1380 H_PORT_CB0, mask, cb0);
1382 if (hret != H_SUCCESS)
1388 free_page((unsigned long)cb0);
1393 int ehea_gen_smrs(struct ehea_port_res *pr)
1396 struct ehea_adapter *adapter = pr->port->adapter;
1398 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1402 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1409 ehea_rem_mr(&pr->send_mr);
1411 ehea_error("Generating SMRS failed\n");
1415 int ehea_rem_smrs(struct ehea_port_res *pr)
1417 if ((ehea_rem_mr(&pr->send_mr)) ||
1418 (ehea_rem_mr(&pr->recv_mr)))
1424 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1426 int arr_size = sizeof(void *) * max_q_entries;
1428 q_skba->arr = vmalloc(arr_size);
1432 memset(q_skba->arr, 0, arr_size);
1434 q_skba->len = max_q_entries;
1436 q_skba->os_skbs = 0;
1441 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1442 struct port_res_cfg *pr_cfg, int queue_token)
1444 struct ehea_adapter *adapter = port->adapter;
1445 enum ehea_eq_type eq_type = EHEA_EQ;
1446 struct ehea_qp_init_attr *init_attr = NULL;
1449 memset(pr, 0, sizeof(struct ehea_port_res));
1452 spin_lock_init(&pr->xmit_lock);
1453 spin_lock_init(&pr->netif_queue);
1455 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1457 ehea_error("create_eq failed (eq)");
1461 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1463 port->logical_port_id);
1465 ehea_error("create_cq failed (cq_recv)");
1469 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1471 port->logical_port_id);
1473 ehea_error("create_cq failed (cq_send)");
1477 if (netif_msg_ifup(port))
1478 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1479 pr->send_cq->attr.act_nr_of_cqes,
1480 pr->recv_cq->attr.act_nr_of_cqes);
1482 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1485 ehea_error("no mem for ehea_qp_init_attr");
1489 init_attr->low_lat_rq1 = 1;
1490 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1491 init_attr->rq_count = 3;
1492 init_attr->qp_token = queue_token;
1493 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1494 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1495 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1496 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1497 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1498 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1499 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1500 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1501 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1502 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1503 init_attr->port_nr = port->logical_port_id;
1504 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1505 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1506 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1508 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1510 ehea_error("create_qp failed");
1515 if (netif_msg_ifup(port))
1516 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1517 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1518 init_attr->act_nr_send_wqes,
1519 init_attr->act_nr_rwqes_rq1,
1520 init_attr->act_nr_rwqes_rq2,
1521 init_attr->act_nr_rwqes_rq3);
1523 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1525 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1526 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1527 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1528 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1532 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1533 if (ehea_gen_smrs(pr) != 0) {
1538 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1542 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1544 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1545 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1546 pr->lro_mgr.lro_arr = pr->lro_desc;
1547 pr->lro_mgr.get_skb_header = get_skb_hdr;
1548 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1549 pr->lro_mgr.dev = port->netdev;
1550 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1551 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1558 vfree(pr->sq_skba.arr);
1559 vfree(pr->rq1_skba.arr);
1560 vfree(pr->rq2_skba.arr);
1561 vfree(pr->rq3_skba.arr);
1562 ehea_destroy_qp(pr->qp);
1563 ehea_destroy_cq(pr->send_cq);
1564 ehea_destroy_cq(pr->recv_cq);
1565 ehea_destroy_eq(pr->eq);
1570 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1575 netif_napi_del(&pr->napi);
1577 ret = ehea_destroy_qp(pr->qp);
1580 ehea_destroy_cq(pr->send_cq);
1581 ehea_destroy_cq(pr->recv_cq);
1582 ehea_destroy_eq(pr->eq);
1584 for (i = 0; i < pr->rq1_skba.len; i++)
1585 if (pr->rq1_skba.arr[i])
1586 dev_kfree_skb(pr->rq1_skba.arr[i]);
1588 for (i = 0; i < pr->rq2_skba.len; i++)
1589 if (pr->rq2_skba.arr[i])
1590 dev_kfree_skb(pr->rq2_skba.arr[i]);
1592 for (i = 0; i < pr->rq3_skba.len; i++)
1593 if (pr->rq3_skba.arr[i])
1594 dev_kfree_skb(pr->rq3_skba.arr[i]);
1596 for (i = 0; i < pr->sq_skba.len; i++)
1597 if (pr->sq_skba.arr[i])
1598 dev_kfree_skb(pr->sq_skba.arr[i]);
1600 vfree(pr->rq1_skba.arr);
1601 vfree(pr->rq2_skba.arr);
1602 vfree(pr->rq3_skba.arr);
1603 vfree(pr->sq_skba.arr);
1604 ret = ehea_rem_smrs(pr);
1610 * The write_* functions store information in swqe which is used by
1611 * the hardware to calculate the ip/tcp/udp checksum
1614 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1615 const struct sk_buff *skb)
1617 swqe->ip_start = skb_network_offset(skb);
1618 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1621 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1622 const struct sk_buff *skb)
1625 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1627 swqe->tcp_end = (u16)skb->len - 1;
1630 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1631 const struct sk_buff *skb)
1634 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1636 swqe->tcp_end = (u16)skb->len - 1;
1640 static void write_swqe2_TSO(struct sk_buff *skb,
1641 struct ehea_swqe *swqe, u32 lkey)
1643 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1644 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1645 int skb_data_size = skb_headlen(skb);
1648 /* Packet is TCP with TSO enabled */
1649 swqe->tx_control |= EHEA_SWQE_TSO;
1650 swqe->mss = skb_shinfo(skb)->gso_size;
1651 /* copy only eth/ip/tcp headers to immediate data and
1652 * the rest of skb->data to sg1entry
1654 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1656 skb_data_size = skb_headlen(skb);
1658 if (skb_data_size >= headersize) {
1659 /* copy immediate data */
1660 skb_copy_from_linear_data(skb, imm_data, headersize);
1661 swqe->immediate_data_length = headersize;
1663 if (skb_data_size > headersize) {
1664 /* set sg1entry data */
1665 sg1entry->l_key = lkey;
1666 sg1entry->len = skb_data_size - headersize;
1668 ehea_map_vaddr(skb->data + headersize);
1669 swqe->descriptors++;
1672 ehea_error("cannot handle fragmented headers");
1675 static void write_swqe2_nonTSO(struct sk_buff *skb,
1676 struct ehea_swqe *swqe, u32 lkey)
1678 int skb_data_size = skb_headlen(skb);
1679 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1680 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1682 /* Packet is any nonTSO type
1684 * Copy as much as possible skb->data to immediate data and
1685 * the rest to sg1entry
1687 if (skb_data_size >= SWQE2_MAX_IMM) {
1688 /* copy immediate data */
1689 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1691 swqe->immediate_data_length = SWQE2_MAX_IMM;
1693 if (skb_data_size > SWQE2_MAX_IMM) {
1694 /* copy sg1entry data */
1695 sg1entry->l_key = lkey;
1696 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1698 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1699 swqe->descriptors++;
1702 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1703 swqe->immediate_data_length = skb_data_size;
1707 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1708 struct ehea_swqe *swqe, u32 lkey)
1710 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1712 int nfrags, sg1entry_contains_frag_data, i;
1714 nfrags = skb_shinfo(skb)->nr_frags;
1715 sg1entry = &swqe->u.immdata_desc.sg_entry;
1716 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1717 swqe->descriptors = 0;
1718 sg1entry_contains_frag_data = 0;
1720 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1721 write_swqe2_TSO(skb, swqe, lkey);
1723 write_swqe2_nonTSO(skb, swqe, lkey);
1725 /* write descriptors */
1727 if (swqe->descriptors == 0) {
1728 /* sg1entry not yet used */
1729 frag = &skb_shinfo(skb)->frags[0];
1731 /* copy sg1entry data */
1732 sg1entry->l_key = lkey;
1733 sg1entry->len = frag->size;
1735 ehea_map_vaddr(page_address(frag->page)
1736 + frag->page_offset);
1737 swqe->descriptors++;
1738 sg1entry_contains_frag_data = 1;
1741 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1743 frag = &skb_shinfo(skb)->frags[i];
1744 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1746 sgentry->l_key = lkey;
1747 sgentry->len = frag->size;
1749 ehea_map_vaddr(page_address(frag->page)
1750 + frag->page_offset);
1751 swqe->descriptors++;
1756 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1762 /* De/Register untagged packets */
1763 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1764 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1765 port->logical_port_id,
1766 reg_type, port->mac_addr, 0, hcallid);
1767 if (hret != H_SUCCESS) {
1768 ehea_error("%sregistering bc address failed (tagged)",
1769 hcallid == H_REG_BCMC ? "" : "de");
1774 /* De/Register VLAN packets */
1775 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1776 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1777 port->logical_port_id,
1778 reg_type, port->mac_addr, 0, hcallid);
1779 if (hret != H_SUCCESS) {
1780 ehea_error("%sregistering bc address failed (vlan)",
1781 hcallid == H_REG_BCMC ? "" : "de");
1788 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1790 struct ehea_port *port = netdev_priv(dev);
1791 struct sockaddr *mac_addr = sa;
1792 struct hcp_ehea_port_cb0 *cb0;
1796 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1797 ret = -EADDRNOTAVAIL;
1801 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1803 ehea_error("no mem for cb0");
1808 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1810 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1812 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1813 port->logical_port_id, H_PORT_CB0,
1814 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1815 if (hret != H_SUCCESS) {
1820 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1822 /* Deregister old MAC in pHYP */
1823 if (port->state == EHEA_PORT_UP) {
1824 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1829 port->mac_addr = cb0->port_mac_addr << 16;
1831 /* Register new MAC in pHYP */
1832 if (port->state == EHEA_PORT_UP) {
1833 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1841 ehea_update_bcmc_registrations();
1843 free_page((unsigned long)cb0);
1848 static void ehea_promiscuous_error(u64 hret, int enable)
1850 if (hret == H_AUTHORITY)
1851 ehea_info("Hypervisor denied %sabling promiscuous mode",
1852 enable == 1 ? "en" : "dis");
1854 ehea_error("failed %sabling promiscuous mode",
1855 enable == 1 ? "en" : "dis");
1858 static void ehea_promiscuous(struct net_device *dev, int enable)
1860 struct ehea_port *port = netdev_priv(dev);
1861 struct hcp_ehea_port_cb7 *cb7;
1864 if ((enable && port->promisc) || (!enable && !port->promisc))
1867 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
1869 ehea_error("no mem for cb7");
1873 /* Modify Pxs_DUCQPN in CB7 */
1874 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1876 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1877 port->logical_port_id,
1878 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1880 ehea_promiscuous_error(hret, enable);
1884 port->promisc = enable;
1886 free_page((unsigned long)cb7);
1889 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1895 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1896 | EHEA_BCMC_UNTAGGED;
1898 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1899 port->logical_port_id,
1900 reg_type, mc_mac_addr, 0, hcallid);
1904 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1905 | EHEA_BCMC_VLANID_ALL;
1907 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1908 port->logical_port_id,
1909 reg_type, mc_mac_addr, 0, hcallid);
1914 static int ehea_drop_multicast_list(struct net_device *dev)
1916 struct ehea_port *port = netdev_priv(dev);
1917 struct ehea_mc_list *mc_entry = port->mc_list;
1918 struct list_head *pos;
1919 struct list_head *temp;
1923 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1924 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1926 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1929 ehea_error("failed deregistering mcast MAC");
1939 static void ehea_allmulti(struct net_device *dev, int enable)
1941 struct ehea_port *port = netdev_priv(dev);
1944 if (!port->allmulti) {
1946 /* Enable ALLMULTI */
1947 ehea_drop_multicast_list(dev);
1948 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
1952 ehea_error("failed enabling IFF_ALLMULTI");
1956 /* Disable ALLMULTI */
1957 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
1961 ehea_error("failed disabling IFF_ALLMULTI");
1965 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
1967 struct ehea_mc_list *ehea_mcl_entry;
1970 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
1971 if (!ehea_mcl_entry) {
1972 ehea_error("no mem for mcl_entry");
1976 INIT_LIST_HEAD(&ehea_mcl_entry->list);
1978 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
1980 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
1983 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
1985 ehea_error("failed registering mcast MAC");
1986 kfree(ehea_mcl_entry);
1990 static void ehea_set_multicast_list(struct net_device *dev)
1992 struct ehea_port *port = netdev_priv(dev);
1993 struct netdev_hw_addr *ha;
1996 if (dev->flags & IFF_PROMISC) {
1997 ehea_promiscuous(dev, 1);
2000 ehea_promiscuous(dev, 0);
2002 if (dev->flags & IFF_ALLMULTI) {
2003 ehea_allmulti(dev, 1);
2006 ehea_allmulti(dev, 0);
2008 if (!netdev_mc_empty(dev)) {
2009 ret = ehea_drop_multicast_list(dev);
2011 /* Dropping the current multicast list failed.
2012 * Enabling ALL_MULTI is the best we can do.
2014 ehea_allmulti(dev, 1);
2017 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
2018 ehea_info("Mcast registration limit reached (0x%llx). "
2020 port->adapter->max_mc_mac);
2024 netdev_for_each_mc_addr(ha, dev)
2025 ehea_add_multicast_entry(port, ha->addr);
2029 ehea_update_bcmc_registrations();
2032 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2034 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2040 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2041 struct ehea_swqe *swqe, u32 lkey)
2043 if (skb->protocol == htons(ETH_P_IP)) {
2044 const struct iphdr *iph = ip_hdr(skb);
2047 swqe->tx_control |= EHEA_SWQE_CRC
2048 | EHEA_SWQE_IP_CHECKSUM
2049 | EHEA_SWQE_TCP_CHECKSUM
2050 | EHEA_SWQE_IMM_DATA_PRESENT
2051 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2053 write_ip_start_end(swqe, skb);
2055 if (iph->protocol == IPPROTO_UDP) {
2056 if ((iph->frag_off & IP_MF) ||
2057 (iph->frag_off & IP_OFFSET))
2058 /* IP fragment, so don't change cs */
2059 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2061 write_udp_offset_end(swqe, skb);
2062 } else if (iph->protocol == IPPROTO_TCP) {
2063 write_tcp_offset_end(swqe, skb);
2066 /* icmp (big data) and ip segmentation packets (all other ip
2067 packets) do not require any special handling */
2070 /* Other Ethernet Protocol */
2071 swqe->tx_control |= EHEA_SWQE_CRC
2072 | EHEA_SWQE_IMM_DATA_PRESENT
2073 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2076 write_swqe2_data(skb, dev, swqe, lkey);
2079 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2080 struct ehea_swqe *swqe)
2082 int nfrags = skb_shinfo(skb)->nr_frags;
2083 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2087 if (skb->protocol == htons(ETH_P_IP)) {
2088 const struct iphdr *iph = ip_hdr(skb);
2091 write_ip_start_end(swqe, skb);
2093 if (iph->protocol == IPPROTO_TCP) {
2094 swqe->tx_control |= EHEA_SWQE_CRC
2095 | EHEA_SWQE_IP_CHECKSUM
2096 | EHEA_SWQE_TCP_CHECKSUM
2097 | EHEA_SWQE_IMM_DATA_PRESENT;
2099 write_tcp_offset_end(swqe, skb);
2101 } else if (iph->protocol == IPPROTO_UDP) {
2102 if ((iph->frag_off & IP_MF) ||
2103 (iph->frag_off & IP_OFFSET))
2104 /* IP fragment, so don't change cs */
2105 swqe->tx_control |= EHEA_SWQE_CRC
2106 | EHEA_SWQE_IMM_DATA_PRESENT;
2108 swqe->tx_control |= EHEA_SWQE_CRC
2109 | EHEA_SWQE_IP_CHECKSUM
2110 | EHEA_SWQE_TCP_CHECKSUM
2111 | EHEA_SWQE_IMM_DATA_PRESENT;
2113 write_udp_offset_end(swqe, skb);
2116 /* icmp (big data) and
2117 ip segmentation packets (all other ip packets) */
2118 swqe->tx_control |= EHEA_SWQE_CRC
2119 | EHEA_SWQE_IP_CHECKSUM
2120 | EHEA_SWQE_IMM_DATA_PRESENT;
2123 /* Other Ethernet Protocol */
2124 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2126 /* copy (immediate) data */
2128 /* data is in a single piece */
2129 skb_copy_from_linear_data(skb, imm_data, skb->len);
2131 /* first copy data from the skb->data buffer ... */
2132 skb_copy_from_linear_data(skb, imm_data,
2134 imm_data += skb_headlen(skb);
2136 /* ... then copy data from the fragments */
2137 for (i = 0; i < nfrags; i++) {
2138 frag = &skb_shinfo(skb)->frags[i];
2140 page_address(frag->page) + frag->page_offset,
2142 imm_data += frag->size;
2145 swqe->immediate_data_length = skb->len;
2149 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2154 if ((skb->protocol == htons(ETH_P_IP)) &&
2155 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2156 tcp = (struct tcphdr *)(skb_network_header(skb) +
2157 (ip_hdr(skb)->ihl * 4));
2158 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2159 tmp += ip_hdr(skb)->daddr % 31;
2160 return tmp % num_qps;
2165 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2167 struct ehea_port *port = netdev_priv(dev);
2168 struct ehea_swqe *swqe;
2169 unsigned long flags;
2172 struct ehea_port_res *pr;
2174 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2176 if (!spin_trylock(&pr->xmit_lock))
2177 return NETDEV_TX_BUSY;
2179 if (pr->queue_stopped) {
2180 spin_unlock(&pr->xmit_lock);
2181 return NETDEV_TX_BUSY;
2184 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2185 memset(swqe, 0, SWQE_HEADER_SIZE);
2186 atomic_dec(&pr->swqe_avail);
2188 if (skb->len <= SWQE3_MAX_IMM) {
2189 u32 sig_iv = port->sig_comp_iv;
2190 u32 swqe_num = pr->swqe_id_counter;
2191 ehea_xmit3(skb, dev, swqe);
2192 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2193 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2194 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2195 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2197 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2198 pr->swqe_ll_count = 0;
2200 pr->swqe_ll_count += 1;
2203 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2204 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2205 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2206 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2207 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2209 pr->sq_skba.index++;
2210 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2212 lkey = pr->send_mr.lkey;
2213 ehea_xmit2(skb, dev, swqe, lkey);
2214 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2216 pr->swqe_id_counter += 1;
2218 if (port->vgrp && vlan_tx_tag_present(skb)) {
2219 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2220 swqe->vlan_tag = vlan_tx_tag_get(skb);
2223 if (netif_msg_tx_queued(port)) {
2224 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2225 ehea_dump(swqe, 512, "swqe");
2228 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2229 netif_stop_queue(dev);
2230 swqe->tx_control |= EHEA_SWQE_PURGE;
2233 ehea_post_swqe(pr->qp, swqe);
2236 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2237 spin_lock_irqsave(&pr->netif_queue, flags);
2238 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2239 pr->p_stats.queue_stopped++;
2240 netif_stop_queue(dev);
2241 pr->queue_stopped = 1;
2243 spin_unlock_irqrestore(&pr->netif_queue, flags);
2245 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
2246 spin_unlock(&pr->xmit_lock);
2248 return NETDEV_TX_OK;
2251 static void ehea_vlan_rx_register(struct net_device *dev,
2252 struct vlan_group *grp)
2254 struct ehea_port *port = netdev_priv(dev);
2255 struct ehea_adapter *adapter = port->adapter;
2256 struct hcp_ehea_port_cb1 *cb1;
2261 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2263 ehea_error("no mem for cb1");
2267 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2268 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2269 if (hret != H_SUCCESS)
2270 ehea_error("modify_ehea_port failed");
2272 free_page((unsigned long)cb1);
2277 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2279 struct ehea_port *port = netdev_priv(dev);
2280 struct ehea_adapter *adapter = port->adapter;
2281 struct hcp_ehea_port_cb1 *cb1;
2285 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2287 ehea_error("no mem for cb1");
2291 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2292 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2293 if (hret != H_SUCCESS) {
2294 ehea_error("query_ehea_port failed");
2299 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2301 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2302 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2303 if (hret != H_SUCCESS)
2304 ehea_error("modify_ehea_port failed");
2306 free_page((unsigned long)cb1);
2310 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2312 struct ehea_port *port = netdev_priv(dev);
2313 struct ehea_adapter *adapter = port->adapter;
2314 struct hcp_ehea_port_cb1 *cb1;
2318 vlan_group_set_device(port->vgrp, vid, NULL);
2320 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2322 ehea_error("no mem for cb1");
2326 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2327 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2328 if (hret != H_SUCCESS) {
2329 ehea_error("query_ehea_port failed");
2334 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2336 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2337 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2338 if (hret != H_SUCCESS)
2339 ehea_error("modify_ehea_port failed");
2341 free_page((unsigned long)cb1);
2344 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2350 struct hcp_modify_qp_cb0 *cb0;
2352 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2358 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2359 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2360 if (hret != H_SUCCESS) {
2361 ehea_error("query_ehea_qp failed (1)");
2365 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2366 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2367 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2368 &dummy64, &dummy64, &dummy16, &dummy16);
2369 if (hret != H_SUCCESS) {
2370 ehea_error("modify_ehea_qp failed (1)");
2374 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2375 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2376 if (hret != H_SUCCESS) {
2377 ehea_error("query_ehea_qp failed (2)");
2381 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2382 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2383 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2384 &dummy64, &dummy64, &dummy16, &dummy16);
2385 if (hret != H_SUCCESS) {
2386 ehea_error("modify_ehea_qp failed (2)");
2390 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2391 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2392 if (hret != H_SUCCESS) {
2393 ehea_error("query_ehea_qp failed (3)");
2397 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2398 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2399 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2400 &dummy64, &dummy64, &dummy16, &dummy16);
2401 if (hret != H_SUCCESS) {
2402 ehea_error("modify_ehea_qp failed (3)");
2406 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2407 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2408 if (hret != H_SUCCESS) {
2409 ehea_error("query_ehea_qp failed (4)");
2415 free_page((unsigned long)cb0);
2419 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2423 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2424 enum ehea_eq_type eq_type = EHEA_EQ;
2426 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2427 EHEA_MAX_ENTRIES_EQ, 1);
2430 ehea_error("ehea_create_eq failed (qp_eq)");
2434 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2435 pr_cfg.max_entries_scq = sq_entries * 2;
2436 pr_cfg.max_entries_sq = sq_entries;
2437 pr_cfg.max_entries_rq1 = rq1_entries;
2438 pr_cfg.max_entries_rq2 = rq2_entries;
2439 pr_cfg.max_entries_rq3 = rq3_entries;
2441 pr_cfg_small_rx.max_entries_rcq = 1;
2442 pr_cfg_small_rx.max_entries_scq = sq_entries;
2443 pr_cfg_small_rx.max_entries_sq = sq_entries;
2444 pr_cfg_small_rx.max_entries_rq1 = 1;
2445 pr_cfg_small_rx.max_entries_rq2 = 1;
2446 pr_cfg_small_rx.max_entries_rq3 = 1;
2448 for (i = 0; i < def_qps; i++) {
2449 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2453 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2454 ret = ehea_init_port_res(port, &port->port_res[i],
2455 &pr_cfg_small_rx, i);
2464 ehea_clean_portres(port, &port->port_res[i]);
2467 ehea_destroy_eq(port->qp_eq);
2471 static int ehea_clean_all_portres(struct ehea_port *port)
2476 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2477 ret |= ehea_clean_portres(port, &port->port_res[i]);
2479 ret |= ehea_destroy_eq(port->qp_eq);
2484 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2486 if (adapter->active_ports)
2489 ehea_rem_mr(&adapter->mr);
2492 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2494 if (adapter->active_ports)
2497 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2500 static int ehea_up(struct net_device *dev)
2503 struct ehea_port *port = netdev_priv(dev);
2505 if (port->state == EHEA_PORT_UP)
2508 ret = ehea_port_res_setup(port, port->num_def_qps,
2509 port->num_add_tx_qps);
2511 ehea_error("port_res_failed");
2515 /* Set default QP for this port */
2516 ret = ehea_configure_port(port);
2518 ehea_error("ehea_configure_port failed. ret:%d", ret);
2522 ret = ehea_reg_interrupts(dev);
2524 ehea_error("reg_interrupts failed. ret:%d", ret);
2528 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2529 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2531 ehea_error("activate_qp failed");
2536 for (i = 0; i < port->num_def_qps; i++) {
2537 ret = ehea_fill_port_res(&port->port_res[i]);
2539 ehea_error("out_free_irqs");
2544 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2550 port->state = EHEA_PORT_UP;
2556 ehea_free_interrupts(dev);
2559 ehea_clean_all_portres(port);
2562 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2564 ehea_update_bcmc_registrations();
2565 ehea_update_firmware_handles();
2570 static void port_napi_disable(struct ehea_port *port)
2574 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2575 napi_disable(&port->port_res[i].napi);
2578 static void port_napi_enable(struct ehea_port *port)
2582 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2583 napi_enable(&port->port_res[i].napi);
2586 static int ehea_open(struct net_device *dev)
2589 struct ehea_port *port = netdev_priv(dev);
2591 mutex_lock(&port->port_lock);
2593 if (netif_msg_ifup(port))
2594 ehea_info("enabling port %s", dev->name);
2598 port_napi_enable(port);
2599 netif_start_queue(dev);
2602 mutex_unlock(&port->port_lock);
2607 static int ehea_down(struct net_device *dev)
2610 struct ehea_port *port = netdev_priv(dev);
2612 if (port->state == EHEA_PORT_DOWN)
2615 ehea_drop_multicast_list(dev);
2616 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2618 ehea_free_interrupts(dev);
2620 port->state = EHEA_PORT_DOWN;
2622 ehea_update_bcmc_registrations();
2624 ret = ehea_clean_all_portres(port);
2626 ehea_info("Failed freeing resources for %s. ret=%i",
2629 ehea_update_firmware_handles();
2634 static int ehea_stop(struct net_device *dev)
2637 struct ehea_port *port = netdev_priv(dev);
2639 if (netif_msg_ifdown(port))
2640 ehea_info("disabling port %s", dev->name);
2642 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2643 cancel_work_sync(&port->reset_task);
2644 mutex_lock(&port->port_lock);
2645 netif_stop_queue(dev);
2646 port_napi_disable(port);
2647 ret = ehea_down(dev);
2648 mutex_unlock(&port->port_lock);
2649 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2653 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2655 struct ehea_qp qp = *orig_qp;
2656 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2657 struct ehea_swqe *swqe;
2661 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2662 swqe = ehea_get_swqe(&qp, &wqe_index);
2663 swqe->tx_control |= EHEA_SWQE_PURGE;
2667 static void ehea_flush_sq(struct ehea_port *port)
2671 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2672 struct ehea_port_res *pr = &port->port_res[i];
2673 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2675 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2683 int ehea_stop_qps(struct net_device *dev)
2685 struct ehea_port *port = netdev_priv(dev);
2686 struct ehea_adapter *adapter = port->adapter;
2687 struct hcp_modify_qp_cb0 *cb0;
2695 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2701 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2702 struct ehea_port_res *pr = &port->port_res[i];
2703 struct ehea_qp *qp = pr->qp;
2705 /* Purge send queue */
2708 /* Disable queue pair */
2709 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2710 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2712 if (hret != H_SUCCESS) {
2713 ehea_error("query_ehea_qp failed (1)");
2717 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2718 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2720 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2721 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2723 &dummy64, &dummy16, &dummy16);
2724 if (hret != H_SUCCESS) {
2725 ehea_error("modify_ehea_qp failed (1)");
2729 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2730 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2732 if (hret != H_SUCCESS) {
2733 ehea_error("query_ehea_qp failed (2)");
2737 /* deregister shared memory regions */
2738 dret = ehea_rem_smrs(pr);
2740 ehea_error("unreg shared memory region failed");
2747 free_page((unsigned long)cb0);
2752 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2754 struct ehea_qp qp = *orig_qp;
2755 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2756 struct ehea_rwqe *rwqe;
2757 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2758 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2759 struct sk_buff *skb;
2760 u32 lkey = pr->recv_mr.lkey;
2766 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2767 rwqe = ehea_get_next_rwqe(&qp, 2);
2768 rwqe->sg_list[0].l_key = lkey;
2769 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2770 skb = skba_rq2[index];
2772 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2775 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2776 rwqe = ehea_get_next_rwqe(&qp, 3);
2777 rwqe->sg_list[0].l_key = lkey;
2778 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2779 skb = skba_rq3[index];
2781 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2785 int ehea_restart_qps(struct net_device *dev)
2787 struct ehea_port *port = netdev_priv(dev);
2788 struct ehea_adapter *adapter = port->adapter;
2792 struct hcp_modify_qp_cb0 *cb0;
2797 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2803 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2804 struct ehea_port_res *pr = &port->port_res[i];
2805 struct ehea_qp *qp = pr->qp;
2807 ret = ehea_gen_smrs(pr);
2809 ehea_error("creation of shared memory regions failed");
2813 ehea_update_rqs(qp, pr);
2815 /* Enable queue pair */
2816 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2817 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2819 if (hret != H_SUCCESS) {
2820 ehea_error("query_ehea_qp failed (1)");
2824 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2825 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2827 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2828 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2830 &dummy64, &dummy16, &dummy16);
2831 if (hret != H_SUCCESS) {
2832 ehea_error("modify_ehea_qp failed (1)");
2836 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2837 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2839 if (hret != H_SUCCESS) {
2840 ehea_error("query_ehea_qp failed (2)");
2844 /* refill entire queue */
2845 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2846 ehea_refill_rq2(pr, 0);
2847 ehea_refill_rq3(pr, 0);
2850 free_page((unsigned long)cb0);
2855 static void ehea_reset_port(struct work_struct *work)
2858 struct ehea_port *port =
2859 container_of(work, struct ehea_port, reset_task);
2860 struct net_device *dev = port->netdev;
2863 mutex_lock(&port->port_lock);
2864 netif_stop_queue(dev);
2866 port_napi_disable(port);
2874 ehea_set_multicast_list(dev);
2876 if (netif_msg_timer(port))
2877 ehea_info("Device %s resetted successfully", dev->name);
2879 port_napi_enable(port);
2881 netif_wake_queue(dev);
2883 mutex_unlock(&port->port_lock);
2886 static void ehea_rereg_mrs(struct work_struct *work)
2889 struct ehea_adapter *adapter;
2891 ehea_info("LPAR memory changed - re-initializing driver");
2893 list_for_each_entry(adapter, &adapter_list, list)
2894 if (adapter->active_ports) {
2895 /* Shutdown all ports */
2896 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2897 struct ehea_port *port = adapter->port[i];
2898 struct net_device *dev;
2905 if (dev->flags & IFF_UP) {
2906 mutex_lock(&port->port_lock);
2907 netif_stop_queue(dev);
2908 ehea_flush_sq(port);
2909 ret = ehea_stop_qps(dev);
2911 mutex_unlock(&port->port_lock);
2914 port_napi_disable(port);
2915 mutex_unlock(&port->port_lock);
2919 /* Unregister old memory region */
2920 ret = ehea_rem_mr(&adapter->mr);
2922 ehea_error("unregister MR failed - driver"
2928 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2930 list_for_each_entry(adapter, &adapter_list, list)
2931 if (adapter->active_ports) {
2932 /* Register new memory region */
2933 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2935 ehea_error("register MR failed - driver"
2940 /* Restart all ports */
2941 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2942 struct ehea_port *port = adapter->port[i];
2945 struct net_device *dev = port->netdev;
2947 if (dev->flags & IFF_UP) {
2948 mutex_lock(&port->port_lock);
2949 port_napi_enable(port);
2950 ret = ehea_restart_qps(dev);
2952 netif_wake_queue(dev);
2953 mutex_unlock(&port->port_lock);
2958 ehea_info("re-initializing driver complete");
2963 static void ehea_tx_watchdog(struct net_device *dev)
2965 struct ehea_port *port = netdev_priv(dev);
2967 if (netif_carrier_ok(dev) &&
2968 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
2969 ehea_schedule_port_reset(port);
2972 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
2974 struct hcp_query_ehea *cb;
2978 cb = (void *)get_zeroed_page(GFP_KERNEL);
2984 hret = ehea_h_query_ehea(adapter->handle, cb);
2986 if (hret != H_SUCCESS) {
2991 adapter->max_mc_mac = cb->max_mc_mac - 1;
2995 free_page((unsigned long)cb);
3000 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
3002 struct hcp_ehea_port_cb4 *cb4;
3008 /* (Try to) enable *jumbo frames */
3009 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
3011 ehea_error("no mem for cb4");
3015 hret = ehea_h_query_ehea_port(port->adapter->handle,
3016 port->logical_port_id,
3018 H_PORT_CB4_JUMBO, cb4);
3019 if (hret == H_SUCCESS) {
3020 if (cb4->jumbo_frame)
3023 cb4->jumbo_frame = 1;
3024 hret = ehea_h_modify_ehea_port(port->adapter->
3031 if (hret == H_SUCCESS)
3037 free_page((unsigned long)cb4);
3043 static ssize_t ehea_show_port_id(struct device *dev,
3044 struct device_attribute *attr, char *buf)
3046 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3047 return sprintf(buf, "%d", port->logical_port_id);
3050 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3053 static void __devinit logical_port_release(struct device *dev)
3055 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3056 of_node_put(port->ofdev.dev.of_node);
3059 static struct device *ehea_register_port(struct ehea_port *port,
3060 struct device_node *dn)
3064 port->ofdev.dev.of_node = of_node_get(dn);
3065 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3066 port->ofdev.dev.bus = &ibmebus_bus_type;
3068 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
3069 port->ofdev.dev.release = logical_port_release;
3071 ret = of_device_register(&port->ofdev);
3073 ehea_error("failed to register device. ret=%d", ret);
3077 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3079 ehea_error("failed to register attributes, ret=%d", ret);
3080 goto out_unreg_of_dev;
3083 return &port->ofdev.dev;
3086 of_device_unregister(&port->ofdev);
3091 static void ehea_unregister_port(struct ehea_port *port)
3093 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3094 of_device_unregister(&port->ofdev);
3097 static const struct net_device_ops ehea_netdev_ops = {
3098 .ndo_open = ehea_open,
3099 .ndo_stop = ehea_stop,
3100 .ndo_start_xmit = ehea_start_xmit,
3101 #ifdef CONFIG_NET_POLL_CONTROLLER
3102 .ndo_poll_controller = ehea_netpoll,
3104 .ndo_get_stats = ehea_get_stats,
3105 .ndo_set_mac_address = ehea_set_mac_addr,
3106 .ndo_validate_addr = eth_validate_addr,
3107 .ndo_set_multicast_list = ehea_set_multicast_list,
3108 .ndo_change_mtu = ehea_change_mtu,
3109 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3110 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
3111 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3112 .ndo_tx_timeout = ehea_tx_watchdog,
3115 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3116 u32 logical_port_id,
3117 struct device_node *dn)
3120 struct net_device *dev;
3121 struct ehea_port *port;
3122 struct device *port_dev;
3125 /* allocate memory for the port structures */
3126 dev = alloc_etherdev(sizeof(struct ehea_port));
3129 ehea_error("no mem for net_device");
3134 port = netdev_priv(dev);
3136 mutex_init(&port->port_lock);
3137 port->state = EHEA_PORT_DOWN;
3138 port->sig_comp_iv = sq_entries / 10;
3140 port->adapter = adapter;
3142 port->logical_port_id = logical_port_id;
3144 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3146 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3147 if (!port->mc_list) {
3149 goto out_free_ethdev;
3152 INIT_LIST_HEAD(&port->mc_list->list);
3154 ret = ehea_sense_port_attr(port);
3156 goto out_free_mc_list;
3158 port_dev = ehea_register_port(port, dn);
3160 goto out_free_mc_list;
3162 SET_NETDEV_DEV(dev, port_dev);
3164 /* initialize net_device structure */
3165 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3167 dev->netdev_ops = &ehea_netdev_ops;
3168 ehea_set_ethtool_ops(dev);
3170 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3171 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3172 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3174 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3176 INIT_WORK(&port->reset_task, ehea_reset_port);
3178 ret = register_netdev(dev);
3180 ehea_error("register_netdev failed. ret=%d", ret);
3181 goto out_unreg_port;
3184 port->lro_max_aggr = lro_max_aggr;
3186 ret = ehea_get_jumboframe_status(port, &jumbo);
3188 ehea_error("failed determining jumbo frame status for %s",
3189 port->netdev->name);
3191 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3192 jumbo == 1 ? "en" : "dis");
3194 adapter->active_ports++;
3199 ehea_unregister_port(port);
3202 kfree(port->mc_list);
3208 ehea_error("setting up logical port with id=%d failed, ret=%d",
3209 logical_port_id, ret);
3213 static void ehea_shutdown_single_port(struct ehea_port *port)
3215 struct ehea_adapter *adapter = port->adapter;
3216 unregister_netdev(port->netdev);
3217 ehea_unregister_port(port);
3218 kfree(port->mc_list);
3219 free_netdev(port->netdev);
3220 adapter->active_ports--;
3223 static int ehea_setup_ports(struct ehea_adapter *adapter)
3225 struct device_node *lhea_dn;
3226 struct device_node *eth_dn = NULL;
3228 const u32 *dn_log_port_id;
3231 lhea_dn = adapter->ofdev->dev.of_node;
3232 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3234 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3236 if (!dn_log_port_id) {
3237 ehea_error("bad device node: eth_dn name=%s",
3242 if (ehea_add_adapter_mr(adapter)) {
3243 ehea_error("creating MR failed");
3244 of_node_put(eth_dn);
3248 adapter->port[i] = ehea_setup_single_port(adapter,
3251 if (adapter->port[i])
3252 ehea_info("%s -> logical port id #%d",
3253 adapter->port[i]->netdev->name,
3256 ehea_remove_adapter_mr(adapter);
3263 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3264 u32 logical_port_id)
3266 struct device_node *lhea_dn;
3267 struct device_node *eth_dn = NULL;
3268 const u32 *dn_log_port_id;
3270 lhea_dn = adapter->ofdev->dev.of_node;
3271 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3273 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3276 if (*dn_log_port_id == logical_port_id)
3283 static ssize_t ehea_probe_port(struct device *dev,
3284 struct device_attribute *attr,
3285 const char *buf, size_t count)
3287 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3288 struct ehea_port *port;
3289 struct device_node *eth_dn = NULL;
3292 u32 logical_port_id;
3294 sscanf(buf, "%d", &logical_port_id);
3296 port = ehea_get_port(adapter, logical_port_id);
3299 ehea_info("adding port with logical port id=%d failed. port "
3300 "already configured as %s.", logical_port_id,
3301 port->netdev->name);
3305 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3308 ehea_info("no logical port with id %d found", logical_port_id);
3312 if (ehea_add_adapter_mr(adapter)) {
3313 ehea_error("creating MR failed");
3317 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3319 of_node_put(eth_dn);
3322 for (i = 0; i < EHEA_MAX_PORTS; i++)
3323 if (!adapter->port[i]) {
3324 adapter->port[i] = port;
3328 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3331 ehea_remove_adapter_mr(adapter);
3335 return (ssize_t) count;
3338 static ssize_t ehea_remove_port(struct device *dev,
3339 struct device_attribute *attr,
3340 const char *buf, size_t count)
3342 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3343 struct ehea_port *port;
3345 u32 logical_port_id;
3347 sscanf(buf, "%d", &logical_port_id);
3349 port = ehea_get_port(adapter, logical_port_id);
3352 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3355 ehea_shutdown_single_port(port);
3357 for (i = 0; i < EHEA_MAX_PORTS; i++)
3358 if (adapter->port[i] == port) {
3359 adapter->port[i] = NULL;
3363 ehea_error("removing port with logical port id=%d failed. port "
3364 "not configured.", logical_port_id);
3368 ehea_remove_adapter_mr(adapter);
3370 return (ssize_t) count;
3373 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3374 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3376 int ehea_create_device_sysfs(struct of_device *dev)
3378 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3382 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3387 void ehea_remove_device_sysfs(struct of_device *dev)
3389 device_remove_file(&dev->dev, &dev_attr_probe_port);
3390 device_remove_file(&dev->dev, &dev_attr_remove_port);
3393 static int __devinit ehea_probe_adapter(struct of_device *dev,
3394 const struct of_device_id *id)
3396 struct ehea_adapter *adapter;
3397 const u64 *adapter_handle;
3400 if (!dev || !dev->dev.of_node) {
3401 ehea_error("Invalid ibmebus device probed");
3405 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3408 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3412 list_add(&adapter->list, &adapter_list);
3414 adapter->ofdev = dev;
3416 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
3419 adapter->handle = *adapter_handle;
3421 if (!adapter->handle) {
3422 dev_err(&dev->dev, "failed getting handle for adapter"
3423 " '%s'\n", dev->dev.of_node->full_name);
3428 adapter->pd = EHEA_PD_ID;
3430 dev_set_drvdata(&dev->dev, adapter);
3433 /* initialize adapter and ports */
3434 /* get adapter properties */
3435 ret = ehea_sense_adapter_attr(adapter);
3437 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3441 adapter->neq = ehea_create_eq(adapter,
3442 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3443 if (!adapter->neq) {
3445 dev_err(&dev->dev, "NEQ creation failed\n");
3449 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3450 (unsigned long)adapter);
3452 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3453 ehea_interrupt_neq, IRQF_DISABLED,
3454 "ehea_neq", adapter);
3456 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3460 ret = ehea_create_device_sysfs(dev);
3464 ret = ehea_setup_ports(adapter);
3466 dev_err(&dev->dev, "setup_ports failed\n");
3467 goto out_rem_dev_sysfs;
3474 ehea_remove_device_sysfs(dev);
3477 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3480 ehea_destroy_eq(adapter->neq);
3483 list_del(&adapter->list);
3487 ehea_update_firmware_handles();
3492 static int __devexit ehea_remove(struct of_device *dev)
3494 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
3497 for (i = 0; i < EHEA_MAX_PORTS; i++)
3498 if (adapter->port[i]) {
3499 ehea_shutdown_single_port(adapter->port[i]);
3500 adapter->port[i] = NULL;
3503 ehea_remove_device_sysfs(dev);
3505 flush_scheduled_work();
3507 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3508 tasklet_kill(&adapter->neq_tasklet);
3510 ehea_destroy_eq(adapter->neq);
3511 ehea_remove_adapter_mr(adapter);
3512 list_del(&adapter->list);
3515 ehea_update_firmware_handles();
3520 void ehea_crash_handler(void)
3524 if (ehea_fw_handles.arr)
3525 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3526 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3527 ehea_fw_handles.arr[i].fwh,
3530 if (ehea_bcmc_regs.arr)
3531 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3532 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3533 ehea_bcmc_regs.arr[i].port_id,
3534 ehea_bcmc_regs.arr[i].reg_type,
3535 ehea_bcmc_regs.arr[i].macaddr,
3539 static int ehea_mem_notifier(struct notifier_block *nb,
3540 unsigned long action, void *data)
3542 int ret = NOTIFY_BAD;
3543 struct memory_notify *arg = data;
3545 if (!mutex_trylock(&dlpar_mem_lock)) {
3546 ehea_info("ehea_mem_notifier must not be called parallelized");
3551 case MEM_CANCEL_OFFLINE:
3552 ehea_info("memory offlining canceled");
3553 /* Readd canceled memory block */
3555 ehea_info("memory is going online");
3556 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3557 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3559 ehea_rereg_mrs(NULL);
3561 case MEM_GOING_OFFLINE:
3562 ehea_info("memory is going offline");
3563 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3564 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3566 ehea_rereg_mrs(NULL);
3572 ehea_update_firmware_handles();
3576 mutex_unlock(&dlpar_mem_lock);
3581 static struct notifier_block ehea_mem_nb = {
3582 .notifier_call = ehea_mem_notifier,
3585 static int ehea_reboot_notifier(struct notifier_block *nb,
3586 unsigned long action, void *unused)
3588 if (action == SYS_RESTART) {
3589 ehea_info("Reboot: freeing all eHEA resources");
3590 ibmebus_unregister_driver(&ehea_driver);
3595 static struct notifier_block ehea_reboot_nb = {
3596 .notifier_call = ehea_reboot_notifier,
3599 static int check_module_parm(void)
3603 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3604 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3605 ehea_info("Bad parameter: rq1_entries");
3608 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3609 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3610 ehea_info("Bad parameter: rq2_entries");
3613 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3614 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3615 ehea_info("Bad parameter: rq3_entries");
3618 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3619 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3620 ehea_info("Bad parameter: sq_entries");
3627 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3630 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3633 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3634 ehea_show_capabilities, NULL);
3636 int __init ehea_module_init(void)
3640 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3644 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3645 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3646 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3648 mutex_init(&ehea_fw_handles.lock);
3649 spin_lock_init(&ehea_bcmc_regs.lock);
3651 ret = check_module_parm();
3655 ret = ehea_create_busmap();
3659 ret = register_reboot_notifier(&ehea_reboot_nb);
3661 ehea_info("failed registering reboot notifier");
3663 ret = register_memory_notifier(&ehea_mem_nb);
3665 ehea_info("failed registering memory remove notifier");
3667 ret = crash_shutdown_register(&ehea_crash_handler);
3669 ehea_info("failed registering crash handler");
3671 ret = ibmebus_register_driver(&ehea_driver);
3673 ehea_error("failed registering eHEA device driver on ebus");
3677 ret = driver_create_file(&ehea_driver.driver,
3678 &driver_attr_capabilities);
3680 ehea_error("failed to register capabilities attribute, ret=%d",
3688 ibmebus_unregister_driver(&ehea_driver);
3690 unregister_memory_notifier(&ehea_mem_nb);
3691 unregister_reboot_notifier(&ehea_reboot_nb);
3692 crash_shutdown_unregister(&ehea_crash_handler);
3697 static void __exit ehea_module_exit(void)
3701 flush_scheduled_work();
3702 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3703 ibmebus_unregister_driver(&ehea_driver);
3704 unregister_reboot_notifier(&ehea_reboot_nb);
3705 ret = crash_shutdown_unregister(&ehea_crash_handler);
3707 ehea_info("failed unregistering crash handler");
3708 unregister_memory_notifier(&ehea_mem_nb);
3709 kfree(ehea_fw_handles.arr);
3710 kfree(ehea_bcmc_regs.arr);
3711 ehea_destroy_busmap();
3714 module_init(ehea_module_init);
3715 module_exit(ehea_module_exit);