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;
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;
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 #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
781 static void reset_sq_restart_flag(struct ehea_port *port)
785 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
786 struct ehea_port_res *pr = &port->port_res[i];
787 pr->sq_restart_flag = 0;
791 static void check_sqs(struct ehea_port *port)
793 struct ehea_swqe *swqe;
797 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
798 struct ehea_port_res *pr = &port->port_res[i];
800 swqe = ehea_get_swqe(pr->qp, &swqe_index);
801 memset(swqe, 0, SWQE_HEADER_SIZE);
802 atomic_dec(&pr->swqe_avail);
804 swqe->tx_control |= EHEA_SWQE_PURGE;
805 swqe->wr_id = SWQE_RESTART_CHECK;
806 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
807 swqe->tx_control |= EHEA_SWQE_IMM_DATA_PRESENT;
808 swqe->immediate_data_length = 80;
810 ehea_post_swqe(pr->qp, swqe);
812 while (pr->sq_restart_flag == 0) {
815 ehea_error("HW/SW queues out of sync");
816 ehea_schedule_port_reset(pr->port);
824 static struct ehea_cqe *ehea_proc_cqes(struct ehea_port_res *pr, int my_quota)
827 struct ehea_cq *send_cq = pr->send_cq;
828 struct ehea_cqe *cqe;
829 int quota = my_quota;
835 cqe = ehea_poll_cq(send_cq);
836 while (cqe && (quota > 0)) {
837 ehea_inc_cq(send_cq);
842 if (cqe->wr_id == SWQE_RESTART_CHECK) {
843 pr->sq_restart_flag = 1;
848 if (cqe->status & EHEA_CQE_STAT_ERR_MASK) {
849 ehea_error("Bad send completion status=0x%04X",
852 if (netif_msg_tx_err(pr->port))
853 ehea_dump(cqe, sizeof(*cqe), "Send CQE");
855 if (cqe->status & EHEA_CQE_STAT_RESET_MASK) {
856 ehea_error("Resetting port");
857 ehea_schedule_port_reset(pr->port);
862 if (netif_msg_tx_done(pr->port))
863 ehea_dump(cqe, sizeof(*cqe), "CQE");
865 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE, cqe->wr_id)
866 == EHEA_SWQE2_TYPE)) {
868 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, cqe->wr_id);
869 skb = pr->sq_skba.arr[index];
871 pr->sq_skba.arr[index] = NULL;
874 swqe_av += EHEA_BMASK_GET(EHEA_WR_ID_REFILL, cqe->wr_id);
877 cqe = ehea_poll_cq(send_cq);
880 ehea_update_feca(send_cq, cqe_counter);
881 atomic_add(swqe_av, &pr->swqe_avail);
883 spin_lock_irqsave(&pr->netif_queue, flags);
885 if (pr->queue_stopped && (atomic_read(&pr->swqe_avail)
886 >= pr->swqe_refill_th)) {
887 netif_wake_queue(pr->port->netdev);
888 pr->queue_stopped = 0;
890 spin_unlock_irqrestore(&pr->netif_queue, flags);
895 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
896 #define EHEA_POLL_MAX_CQES 65535
898 static int ehea_poll(struct napi_struct *napi, int budget)
900 struct ehea_port_res *pr = container_of(napi, struct ehea_port_res,
902 struct net_device *dev = pr->port->netdev;
903 struct ehea_cqe *cqe;
904 struct ehea_cqe *cqe_skb = NULL;
905 int force_irq, wqe_index;
908 force_irq = (pr->poll_counter > EHEA_NAPI_POLL_NUM_BEFORE_IRQ);
909 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
912 rx += ehea_proc_rwqes(dev, pr, budget - rx);
914 while ((rx != budget) || force_irq) {
915 pr->poll_counter = 0;
918 ehea_reset_cq_ep(pr->recv_cq);
919 ehea_reset_cq_ep(pr->send_cq);
920 ehea_reset_cq_n1(pr->recv_cq);
921 ehea_reset_cq_n1(pr->send_cq);
923 cqe = ehea_poll_rq1(pr->qp, &wqe_index);
924 cqe_skb = ehea_poll_cq(pr->send_cq);
926 if (!cqe && !cqe_skb)
929 if (!napi_reschedule(napi))
932 cqe_skb = ehea_proc_cqes(pr, EHEA_POLL_MAX_CQES);
933 rx += ehea_proc_rwqes(dev, pr, budget - rx);
940 #ifdef CONFIG_NET_POLL_CONTROLLER
941 static void ehea_netpoll(struct net_device *dev)
943 struct ehea_port *port = netdev_priv(dev);
946 for (i = 0; i < port->num_def_qps; i++)
947 napi_schedule(&port->port_res[i].napi);
951 static irqreturn_t ehea_recv_irq_handler(int irq, void *param)
953 struct ehea_port_res *pr = param;
955 napi_schedule(&pr->napi);
960 static irqreturn_t ehea_qp_aff_irq_handler(int irq, void *param)
962 struct ehea_port *port = param;
963 struct ehea_eqe *eqe;
966 u64 resource_type, aer, aerr;
969 eqe = ehea_poll_eq(port->qp_eq);
972 qp_token = EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN, eqe->entry);
973 ehea_error("QP aff_err: entry=0x%llx, token=0x%x",
974 eqe->entry, qp_token);
976 qp = port->port_res[qp_token].qp;
978 resource_type = ehea_error_data(port->adapter, qp->fw_handle,
981 if (resource_type == EHEA_AER_RESTYPE_QP) {
982 if ((aer & EHEA_AER_RESET_MASK) ||
983 (aerr & EHEA_AERR_RESET_MASK))
986 reset_port = 1; /* Reset in case of CQ or EQ error */
988 eqe = ehea_poll_eq(port->qp_eq);
992 ehea_error("Resetting port");
993 ehea_schedule_port_reset(port);
999 static struct ehea_port *ehea_get_port(struct ehea_adapter *adapter,
1004 for (i = 0; i < EHEA_MAX_PORTS; i++)
1005 if (adapter->port[i])
1006 if (adapter->port[i]->logical_port_id == logical_port)
1007 return adapter->port[i];
1011 int ehea_sense_port_attr(struct ehea_port *port)
1015 struct hcp_ehea_port_cb0 *cb0;
1017 /* may be called via ehea_neq_tasklet() */
1018 cb0 = (void *)get_zeroed_page(GFP_ATOMIC);
1020 ehea_error("no mem for cb0");
1025 hret = ehea_h_query_ehea_port(port->adapter->handle,
1026 port->logical_port_id, H_PORT_CB0,
1027 EHEA_BMASK_SET(H_PORT_CB0_ALL, 0xFFFF),
1029 if (hret != H_SUCCESS) {
1035 port->mac_addr = cb0->port_mac_addr << 16;
1037 if (!is_valid_ether_addr((u8 *)&port->mac_addr)) {
1038 ret = -EADDRNOTAVAIL;
1043 switch (cb0->port_speed) {
1045 port->port_speed = EHEA_SPEED_10M;
1046 port->full_duplex = 0;
1049 port->port_speed = EHEA_SPEED_10M;
1050 port->full_duplex = 1;
1052 case H_SPEED_100M_H:
1053 port->port_speed = EHEA_SPEED_100M;
1054 port->full_duplex = 0;
1056 case H_SPEED_100M_F:
1057 port->port_speed = EHEA_SPEED_100M;
1058 port->full_duplex = 1;
1061 port->port_speed = EHEA_SPEED_1G;
1062 port->full_duplex = 1;
1065 port->port_speed = EHEA_SPEED_10G;
1066 port->full_duplex = 1;
1069 port->port_speed = 0;
1070 port->full_duplex = 0;
1075 port->num_mcs = cb0->num_default_qps;
1077 /* Number of default QPs */
1079 port->num_def_qps = cb0->num_default_qps;
1081 port->num_def_qps = 1;
1083 if (!port->num_def_qps) {
1088 port->num_tx_qps = num_tx_qps;
1090 if (port->num_def_qps >= port->num_tx_qps)
1091 port->num_add_tx_qps = 0;
1093 port->num_add_tx_qps = port->num_tx_qps - port->num_def_qps;
1097 if (ret || netif_msg_probe(port))
1098 ehea_dump(cb0, sizeof(*cb0), "ehea_sense_port_attr");
1099 free_page((unsigned long)cb0);
1104 int ehea_set_portspeed(struct ehea_port *port, u32 port_speed)
1106 struct hcp_ehea_port_cb4 *cb4;
1110 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
1112 ehea_error("no mem for cb4");
1117 cb4->port_speed = port_speed;
1119 netif_carrier_off(port->netdev);
1121 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1122 port->logical_port_id,
1123 H_PORT_CB4, H_PORT_CB4_SPEED, cb4);
1124 if (hret == H_SUCCESS) {
1125 port->autoneg = port_speed == EHEA_SPEED_AUTONEG ? 1 : 0;
1127 hret = ehea_h_query_ehea_port(port->adapter->handle,
1128 port->logical_port_id,
1129 H_PORT_CB4, H_PORT_CB4_SPEED,
1131 if (hret == H_SUCCESS) {
1132 switch (cb4->port_speed) {
1134 port->port_speed = EHEA_SPEED_10M;
1135 port->full_duplex = 0;
1138 port->port_speed = EHEA_SPEED_10M;
1139 port->full_duplex = 1;
1141 case H_SPEED_100M_H:
1142 port->port_speed = EHEA_SPEED_100M;
1143 port->full_duplex = 0;
1145 case H_SPEED_100M_F:
1146 port->port_speed = EHEA_SPEED_100M;
1147 port->full_duplex = 1;
1150 port->port_speed = EHEA_SPEED_1G;
1151 port->full_duplex = 1;
1154 port->port_speed = EHEA_SPEED_10G;
1155 port->full_duplex = 1;
1158 port->port_speed = 0;
1159 port->full_duplex = 0;
1163 ehea_error("Failed sensing port speed");
1167 if (hret == H_AUTHORITY) {
1168 ehea_info("Hypervisor denied setting port speed");
1172 ehea_error("Failed setting port speed");
1175 if (!prop_carrier_state || (port->phy_link == EHEA_PHY_LINK_UP))
1176 netif_carrier_on(port->netdev);
1178 free_page((unsigned long)cb4);
1183 static void ehea_parse_eqe(struct ehea_adapter *adapter, u64 eqe)
1188 struct ehea_port *port;
1190 ec = EHEA_BMASK_GET(NEQE_EVENT_CODE, eqe);
1191 portnum = EHEA_BMASK_GET(NEQE_PORTNUM, eqe);
1192 port = ehea_get_port(adapter, portnum);
1195 case EHEA_EC_PORTSTATE_CHG: /* port state change */
1198 ehea_error("unknown portnum %x", portnum);
1202 if (EHEA_BMASK_GET(NEQE_PORT_UP, eqe)) {
1203 if (!netif_carrier_ok(port->netdev)) {
1204 ret = ehea_sense_port_attr(port);
1206 ehea_error("failed resensing port "
1211 if (netif_msg_link(port))
1212 ehea_info("%s: Logical port up: %dMbps "
1216 port->full_duplex ==
1217 1 ? "Full" : "Half");
1219 netif_carrier_on(port->netdev);
1220 netif_wake_queue(port->netdev);
1223 if (netif_carrier_ok(port->netdev)) {
1224 if (netif_msg_link(port))
1225 ehea_info("%s: Logical port down",
1226 port->netdev->name);
1227 netif_carrier_off(port->netdev);
1228 netif_stop_queue(port->netdev);
1231 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP, eqe)) {
1232 port->phy_link = EHEA_PHY_LINK_UP;
1233 if (netif_msg_link(port))
1234 ehea_info("%s: Physical port up",
1235 port->netdev->name);
1236 if (prop_carrier_state)
1237 netif_carrier_on(port->netdev);
1239 port->phy_link = EHEA_PHY_LINK_DOWN;
1240 if (netif_msg_link(port))
1241 ehea_info("%s: Physical port down",
1242 port->netdev->name);
1243 if (prop_carrier_state)
1244 netif_carrier_off(port->netdev);
1247 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY, eqe))
1248 ehea_info("External switch port is primary port");
1250 ehea_info("External switch port is backup port");
1253 case EHEA_EC_ADAPTER_MALFUNC:
1254 ehea_error("Adapter malfunction");
1256 case EHEA_EC_PORT_MALFUNC:
1257 ehea_info("Port malfunction: Device: %s", port->netdev->name);
1258 netif_carrier_off(port->netdev);
1259 netif_stop_queue(port->netdev);
1262 ehea_error("unknown event code %x, eqe=0x%llX", ec, eqe);
1267 static void ehea_neq_tasklet(unsigned long data)
1269 struct ehea_adapter *adapter = (struct ehea_adapter *)data;
1270 struct ehea_eqe *eqe;
1273 eqe = ehea_poll_eq(adapter->neq);
1274 ehea_debug("eqe=%p", eqe);
1277 ehea_debug("*eqe=%lx", eqe->entry);
1278 ehea_parse_eqe(adapter, eqe->entry);
1279 eqe = ehea_poll_eq(adapter->neq);
1280 ehea_debug("next eqe=%p", eqe);
1283 event_mask = EHEA_BMASK_SET(NELR_PORTSTATE_CHG, 1)
1284 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC, 1)
1285 | EHEA_BMASK_SET(NELR_PORT_MALFUNC, 1);
1287 ehea_h_reset_events(adapter->handle,
1288 adapter->neq->fw_handle, event_mask);
1291 static irqreturn_t ehea_interrupt_neq(int irq, void *param)
1293 struct ehea_adapter *adapter = param;
1294 tasklet_hi_schedule(&adapter->neq_tasklet);
1299 static int ehea_fill_port_res(struct ehea_port_res *pr)
1302 struct ehea_qp_init_attr *init_attr = &pr->qp->init_attr;
1304 ehea_init_fill_rq1(pr, init_attr->act_nr_rwqes_rq1
1305 - init_attr->act_nr_rwqes_rq2
1306 - init_attr->act_nr_rwqes_rq3 - 1);
1308 ret = ehea_refill_rq2(pr, init_attr->act_nr_rwqes_rq2 - 1);
1310 ret |= ehea_refill_rq3(pr, init_attr->act_nr_rwqes_rq3 - 1);
1315 static int ehea_reg_interrupts(struct net_device *dev)
1317 struct ehea_port *port = netdev_priv(dev);
1318 struct ehea_port_res *pr;
1322 snprintf(port->int_aff_name, EHEA_IRQ_NAME_SIZE - 1, "%s-aff",
1325 ret = ibmebus_request_irq(port->qp_eq->attr.ist1,
1326 ehea_qp_aff_irq_handler,
1327 IRQF_DISABLED, port->int_aff_name, port);
1329 ehea_error("failed registering irq for qp_aff_irq_handler:"
1330 "ist=%X", port->qp_eq->attr.ist1);
1334 if (netif_msg_ifup(port))
1335 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1336 "registered", port->qp_eq->attr.ist1);
1339 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1340 pr = &port->port_res[i];
1341 snprintf(pr->int_send_name, EHEA_IRQ_NAME_SIZE - 1,
1342 "%s-queue%d", dev->name, i);
1343 ret = ibmebus_request_irq(pr->eq->attr.ist1,
1344 ehea_recv_irq_handler,
1345 IRQF_DISABLED, pr->int_send_name,
1348 ehea_error("failed registering irq for ehea_queue "
1349 "port_res_nr:%d, ist=%X", i,
1353 if (netif_msg_ifup(port))
1354 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1355 "%d registered", pr->eq->attr.ist1, i);
1363 u32 ist = port->port_res[i].eq->attr.ist1;
1364 ibmebus_free_irq(ist, &port->port_res[i]);
1368 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1369 i = port->num_def_qps;
1375 static void ehea_free_interrupts(struct net_device *dev)
1377 struct ehea_port *port = netdev_priv(dev);
1378 struct ehea_port_res *pr;
1383 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
1384 pr = &port->port_res[i];
1385 ibmebus_free_irq(pr->eq->attr.ist1, pr);
1386 if (netif_msg_intr(port))
1387 ehea_info("free send irq for res %d with handle 0x%X",
1388 i, pr->eq->attr.ist1);
1391 /* associated events */
1392 ibmebus_free_irq(port->qp_eq->attr.ist1, port);
1393 if (netif_msg_intr(port))
1394 ehea_info("associated event interrupt for handle 0x%X freed",
1395 port->qp_eq->attr.ist1);
1398 static int ehea_configure_port(struct ehea_port *port)
1402 struct hcp_ehea_port_cb0 *cb0;
1405 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1409 cb0->port_rc = EHEA_BMASK_SET(PXLY_RC_VALID, 1)
1410 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM, 1)
1411 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM, 1)
1412 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT, 1)
1413 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER,
1414 PXLY_RC_VLAN_FILTER)
1415 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME, 1);
1417 for (i = 0; i < port->num_mcs; i++)
1419 cb0->default_qpn_arr[i] =
1420 port->port_res[i].qp->init_attr.qp_nr;
1422 cb0->default_qpn_arr[i] =
1423 port->port_res[0].qp->init_attr.qp_nr;
1425 if (netif_msg_ifup(port))
1426 ehea_dump(cb0, sizeof(*cb0), "ehea_configure_port");
1428 mask = EHEA_BMASK_SET(H_PORT_CB0_PRC, 1)
1429 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY, 1);
1431 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1432 port->logical_port_id,
1433 H_PORT_CB0, mask, cb0);
1435 if (hret != H_SUCCESS)
1441 free_page((unsigned long)cb0);
1446 int ehea_gen_smrs(struct ehea_port_res *pr)
1449 struct ehea_adapter *adapter = pr->port->adapter;
1451 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->send_mr);
1455 ret = ehea_gen_smr(adapter, &adapter->mr, &pr->recv_mr);
1462 ehea_rem_mr(&pr->send_mr);
1464 ehea_error("Generating SMRS failed\n");
1468 int ehea_rem_smrs(struct ehea_port_res *pr)
1470 if ((ehea_rem_mr(&pr->send_mr)) ||
1471 (ehea_rem_mr(&pr->recv_mr)))
1477 static int ehea_init_q_skba(struct ehea_q_skb_arr *q_skba, int max_q_entries)
1479 int arr_size = sizeof(void *) * max_q_entries;
1481 q_skba->arr = vmalloc(arr_size);
1485 memset(q_skba->arr, 0, arr_size);
1487 q_skba->len = max_q_entries;
1489 q_skba->os_skbs = 0;
1494 static int ehea_init_port_res(struct ehea_port *port, struct ehea_port_res *pr,
1495 struct port_res_cfg *pr_cfg, int queue_token)
1497 struct ehea_adapter *adapter = port->adapter;
1498 enum ehea_eq_type eq_type = EHEA_EQ;
1499 struct ehea_qp_init_attr *init_attr = NULL;
1502 memset(pr, 0, sizeof(struct ehea_port_res));
1505 spin_lock_init(&pr->xmit_lock);
1506 spin_lock_init(&pr->netif_queue);
1508 pr->eq = ehea_create_eq(adapter, eq_type, EHEA_MAX_ENTRIES_EQ, 0);
1510 ehea_error("create_eq failed (eq)");
1514 pr->recv_cq = ehea_create_cq(adapter, pr_cfg->max_entries_rcq,
1516 port->logical_port_id);
1518 ehea_error("create_cq failed (cq_recv)");
1522 pr->send_cq = ehea_create_cq(adapter, pr_cfg->max_entries_scq,
1524 port->logical_port_id);
1526 ehea_error("create_cq failed (cq_send)");
1530 if (netif_msg_ifup(port))
1531 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1532 pr->send_cq->attr.act_nr_of_cqes,
1533 pr->recv_cq->attr.act_nr_of_cqes);
1535 init_attr = kzalloc(sizeof(*init_attr), GFP_KERNEL);
1538 ehea_error("no mem for ehea_qp_init_attr");
1542 init_attr->low_lat_rq1 = 1;
1543 init_attr->signalingtype = 1; /* generate CQE if specified in WQE */
1544 init_attr->rq_count = 3;
1545 init_attr->qp_token = queue_token;
1546 init_attr->max_nr_send_wqes = pr_cfg->max_entries_sq;
1547 init_attr->max_nr_rwqes_rq1 = pr_cfg->max_entries_rq1;
1548 init_attr->max_nr_rwqes_rq2 = pr_cfg->max_entries_rq2;
1549 init_attr->max_nr_rwqes_rq3 = pr_cfg->max_entries_rq3;
1550 init_attr->wqe_size_enc_sq = EHEA_SG_SQ;
1551 init_attr->wqe_size_enc_rq1 = EHEA_SG_RQ1;
1552 init_attr->wqe_size_enc_rq2 = EHEA_SG_RQ2;
1553 init_attr->wqe_size_enc_rq3 = EHEA_SG_RQ3;
1554 init_attr->rq2_threshold = EHEA_RQ2_THRESHOLD;
1555 init_attr->rq3_threshold = EHEA_RQ3_THRESHOLD;
1556 init_attr->port_nr = port->logical_port_id;
1557 init_attr->send_cq_handle = pr->send_cq->fw_handle;
1558 init_attr->recv_cq_handle = pr->recv_cq->fw_handle;
1559 init_attr->aff_eq_handle = port->qp_eq->fw_handle;
1561 pr->qp = ehea_create_qp(adapter, adapter->pd, init_attr);
1563 ehea_error("create_qp failed");
1568 if (netif_msg_ifup(port))
1569 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1570 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr->qp_nr,
1571 init_attr->act_nr_send_wqes,
1572 init_attr->act_nr_rwqes_rq1,
1573 init_attr->act_nr_rwqes_rq2,
1574 init_attr->act_nr_rwqes_rq3);
1576 pr->sq_skba_size = init_attr->act_nr_send_wqes + 1;
1578 ret = ehea_init_q_skba(&pr->sq_skba, pr->sq_skba_size);
1579 ret |= ehea_init_q_skba(&pr->rq1_skba, init_attr->act_nr_rwqes_rq1 + 1);
1580 ret |= ehea_init_q_skba(&pr->rq2_skba, init_attr->act_nr_rwqes_rq2 + 1);
1581 ret |= ehea_init_q_skba(&pr->rq3_skba, init_attr->act_nr_rwqes_rq3 + 1);
1585 pr->swqe_refill_th = init_attr->act_nr_send_wqes / 10;
1586 if (ehea_gen_smrs(pr) != 0) {
1591 atomic_set(&pr->swqe_avail, init_attr->act_nr_send_wqes - 1);
1595 netif_napi_add(pr->port->netdev, &pr->napi, ehea_poll, 64);
1597 pr->lro_mgr.max_aggr = pr->port->lro_max_aggr;
1598 pr->lro_mgr.max_desc = MAX_LRO_DESCRIPTORS;
1599 pr->lro_mgr.lro_arr = pr->lro_desc;
1600 pr->lro_mgr.get_skb_header = get_skb_hdr;
1601 pr->lro_mgr.features = LRO_F_NAPI | LRO_F_EXTRACT_VLAN_ID;
1602 pr->lro_mgr.dev = port->netdev;
1603 pr->lro_mgr.ip_summed = CHECKSUM_UNNECESSARY;
1604 pr->lro_mgr.ip_summed_aggr = CHECKSUM_UNNECESSARY;
1611 vfree(pr->sq_skba.arr);
1612 vfree(pr->rq1_skba.arr);
1613 vfree(pr->rq2_skba.arr);
1614 vfree(pr->rq3_skba.arr);
1615 ehea_destroy_qp(pr->qp);
1616 ehea_destroy_cq(pr->send_cq);
1617 ehea_destroy_cq(pr->recv_cq);
1618 ehea_destroy_eq(pr->eq);
1623 static int ehea_clean_portres(struct ehea_port *port, struct ehea_port_res *pr)
1628 netif_napi_del(&pr->napi);
1630 ret = ehea_destroy_qp(pr->qp);
1633 ehea_destroy_cq(pr->send_cq);
1634 ehea_destroy_cq(pr->recv_cq);
1635 ehea_destroy_eq(pr->eq);
1637 for (i = 0; i < pr->rq1_skba.len; i++)
1638 if (pr->rq1_skba.arr[i])
1639 dev_kfree_skb(pr->rq1_skba.arr[i]);
1641 for (i = 0; i < pr->rq2_skba.len; i++)
1642 if (pr->rq2_skba.arr[i])
1643 dev_kfree_skb(pr->rq2_skba.arr[i]);
1645 for (i = 0; i < pr->rq3_skba.len; i++)
1646 if (pr->rq3_skba.arr[i])
1647 dev_kfree_skb(pr->rq3_skba.arr[i]);
1649 for (i = 0; i < pr->sq_skba.len; i++)
1650 if (pr->sq_skba.arr[i])
1651 dev_kfree_skb(pr->sq_skba.arr[i]);
1653 vfree(pr->rq1_skba.arr);
1654 vfree(pr->rq2_skba.arr);
1655 vfree(pr->rq3_skba.arr);
1656 vfree(pr->sq_skba.arr);
1657 ret = ehea_rem_smrs(pr);
1663 * The write_* functions store information in swqe which is used by
1664 * the hardware to calculate the ip/tcp/udp checksum
1667 static inline void write_ip_start_end(struct ehea_swqe *swqe,
1668 const struct sk_buff *skb)
1670 swqe->ip_start = skb_network_offset(skb);
1671 swqe->ip_end = (u8)(swqe->ip_start + ip_hdrlen(skb) - 1);
1674 static inline void write_tcp_offset_end(struct ehea_swqe *swqe,
1675 const struct sk_buff *skb)
1678 (u8)(swqe->ip_end + 1 + offsetof(struct tcphdr, check));
1680 swqe->tcp_end = (u16)skb->len - 1;
1683 static inline void write_udp_offset_end(struct ehea_swqe *swqe,
1684 const struct sk_buff *skb)
1687 (u8)(swqe->ip_end + 1 + offsetof(struct udphdr, check));
1689 swqe->tcp_end = (u16)skb->len - 1;
1693 static void write_swqe2_TSO(struct sk_buff *skb,
1694 struct ehea_swqe *swqe, u32 lkey)
1696 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1697 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1698 int skb_data_size = skb_headlen(skb);
1701 /* Packet is TCP with TSO enabled */
1702 swqe->tx_control |= EHEA_SWQE_TSO;
1703 swqe->mss = skb_shinfo(skb)->gso_size;
1704 /* copy only eth/ip/tcp headers to immediate data and
1705 * the rest of skb->data to sg1entry
1707 headersize = ETH_HLEN + ip_hdrlen(skb) + tcp_hdrlen(skb);
1709 skb_data_size = skb_headlen(skb);
1711 if (skb_data_size >= headersize) {
1712 /* copy immediate data */
1713 skb_copy_from_linear_data(skb, imm_data, headersize);
1714 swqe->immediate_data_length = headersize;
1716 if (skb_data_size > headersize) {
1717 /* set sg1entry data */
1718 sg1entry->l_key = lkey;
1719 sg1entry->len = skb_data_size - headersize;
1721 ehea_map_vaddr(skb->data + headersize);
1722 swqe->descriptors++;
1725 ehea_error("cannot handle fragmented headers");
1728 static void write_swqe2_nonTSO(struct sk_buff *skb,
1729 struct ehea_swqe *swqe, u32 lkey)
1731 int skb_data_size = skb_headlen(skb);
1732 u8 *imm_data = &swqe->u.immdata_desc.immediate_data[0];
1733 struct ehea_vsgentry *sg1entry = &swqe->u.immdata_desc.sg_entry;
1735 /* Packet is any nonTSO type
1737 * Copy as much as possible skb->data to immediate data and
1738 * the rest to sg1entry
1740 if (skb_data_size >= SWQE2_MAX_IMM) {
1741 /* copy immediate data */
1742 skb_copy_from_linear_data(skb, imm_data, SWQE2_MAX_IMM);
1744 swqe->immediate_data_length = SWQE2_MAX_IMM;
1746 if (skb_data_size > SWQE2_MAX_IMM) {
1747 /* copy sg1entry data */
1748 sg1entry->l_key = lkey;
1749 sg1entry->len = skb_data_size - SWQE2_MAX_IMM;
1751 ehea_map_vaddr(skb->data + SWQE2_MAX_IMM);
1752 swqe->descriptors++;
1755 skb_copy_from_linear_data(skb, imm_data, skb_data_size);
1756 swqe->immediate_data_length = skb_data_size;
1760 static inline void write_swqe2_data(struct sk_buff *skb, struct net_device *dev,
1761 struct ehea_swqe *swqe, u32 lkey)
1763 struct ehea_vsgentry *sg_list, *sg1entry, *sgentry;
1765 int nfrags, sg1entry_contains_frag_data, i;
1767 nfrags = skb_shinfo(skb)->nr_frags;
1768 sg1entry = &swqe->u.immdata_desc.sg_entry;
1769 sg_list = (struct ehea_vsgentry *)&swqe->u.immdata_desc.sg_list;
1770 swqe->descriptors = 0;
1771 sg1entry_contains_frag_data = 0;
1773 if ((dev->features & NETIF_F_TSO) && skb_shinfo(skb)->gso_size)
1774 write_swqe2_TSO(skb, swqe, lkey);
1776 write_swqe2_nonTSO(skb, swqe, lkey);
1778 /* write descriptors */
1780 if (swqe->descriptors == 0) {
1781 /* sg1entry not yet used */
1782 frag = &skb_shinfo(skb)->frags[0];
1784 /* copy sg1entry data */
1785 sg1entry->l_key = lkey;
1786 sg1entry->len = frag->size;
1788 ehea_map_vaddr(page_address(frag->page)
1789 + frag->page_offset);
1790 swqe->descriptors++;
1791 sg1entry_contains_frag_data = 1;
1794 for (i = sg1entry_contains_frag_data; i < nfrags; i++) {
1796 frag = &skb_shinfo(skb)->frags[i];
1797 sgentry = &sg_list[i - sg1entry_contains_frag_data];
1799 sgentry->l_key = lkey;
1800 sgentry->len = frag->size;
1802 ehea_map_vaddr(page_address(frag->page)
1803 + frag->page_offset);
1804 swqe->descriptors++;
1809 static int ehea_broadcast_reg_helper(struct ehea_port *port, u32 hcallid)
1815 /* De/Register untagged packets */
1816 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_UNTAGGED;
1817 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1818 port->logical_port_id,
1819 reg_type, port->mac_addr, 0, hcallid);
1820 if (hret != H_SUCCESS) {
1821 ehea_error("%sregistering bc address failed (tagged)",
1822 hcallid == H_REG_BCMC ? "" : "de");
1827 /* De/Register VLAN packets */
1828 reg_type = EHEA_BCMC_BROADCAST | EHEA_BCMC_VLANID_ALL;
1829 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1830 port->logical_port_id,
1831 reg_type, port->mac_addr, 0, hcallid);
1832 if (hret != H_SUCCESS) {
1833 ehea_error("%sregistering bc address failed (vlan)",
1834 hcallid == H_REG_BCMC ? "" : "de");
1841 static int ehea_set_mac_addr(struct net_device *dev, void *sa)
1843 struct ehea_port *port = netdev_priv(dev);
1844 struct sockaddr *mac_addr = sa;
1845 struct hcp_ehea_port_cb0 *cb0;
1849 if (!is_valid_ether_addr(mac_addr->sa_data)) {
1850 ret = -EADDRNOTAVAIL;
1854 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
1856 ehea_error("no mem for cb0");
1861 memcpy(&(cb0->port_mac_addr), &(mac_addr->sa_data[0]), ETH_ALEN);
1863 cb0->port_mac_addr = cb0->port_mac_addr >> 16;
1865 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1866 port->logical_port_id, H_PORT_CB0,
1867 EHEA_BMASK_SET(H_PORT_CB0_MAC, 1), cb0);
1868 if (hret != H_SUCCESS) {
1873 memcpy(dev->dev_addr, mac_addr->sa_data, dev->addr_len);
1875 /* Deregister old MAC in pHYP */
1876 if (port->state == EHEA_PORT_UP) {
1877 ret = ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
1882 port->mac_addr = cb0->port_mac_addr << 16;
1884 /* Register new MAC in pHYP */
1885 if (port->state == EHEA_PORT_UP) {
1886 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
1894 ehea_update_bcmc_registrations();
1896 free_page((unsigned long)cb0);
1901 static void ehea_promiscuous_error(u64 hret, int enable)
1903 if (hret == H_AUTHORITY)
1904 ehea_info("Hypervisor denied %sabling promiscuous mode",
1905 enable == 1 ? "en" : "dis");
1907 ehea_error("failed %sabling promiscuous mode",
1908 enable == 1 ? "en" : "dis");
1911 static void ehea_promiscuous(struct net_device *dev, int enable)
1913 struct ehea_port *port = netdev_priv(dev);
1914 struct hcp_ehea_port_cb7 *cb7;
1917 if ((enable && port->promisc) || (!enable && !port->promisc))
1920 cb7 = (void *)get_zeroed_page(GFP_ATOMIC);
1922 ehea_error("no mem for cb7");
1926 /* Modify Pxs_DUCQPN in CB7 */
1927 cb7->def_uc_qpn = enable == 1 ? port->port_res[0].qp->fw_handle : 0;
1929 hret = ehea_h_modify_ehea_port(port->adapter->handle,
1930 port->logical_port_id,
1931 H_PORT_CB7, H_PORT_CB7_DUCQPN, cb7);
1933 ehea_promiscuous_error(hret, enable);
1937 port->promisc = enable;
1939 free_page((unsigned long)cb7);
1942 static u64 ehea_multicast_reg_helper(struct ehea_port *port, u64 mc_mac_addr,
1948 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1949 | EHEA_BCMC_UNTAGGED;
1951 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1952 port->logical_port_id,
1953 reg_type, mc_mac_addr, 0, hcallid);
1957 reg_type = EHEA_BCMC_SCOPE_ALL | EHEA_BCMC_MULTICAST
1958 | EHEA_BCMC_VLANID_ALL;
1960 hret = ehea_h_reg_dereg_bcmc(port->adapter->handle,
1961 port->logical_port_id,
1962 reg_type, mc_mac_addr, 0, hcallid);
1967 static int ehea_drop_multicast_list(struct net_device *dev)
1969 struct ehea_port *port = netdev_priv(dev);
1970 struct ehea_mc_list *mc_entry = port->mc_list;
1971 struct list_head *pos;
1972 struct list_head *temp;
1976 list_for_each_safe(pos, temp, &(port->mc_list->list)) {
1977 mc_entry = list_entry(pos, struct ehea_mc_list, list);
1979 hret = ehea_multicast_reg_helper(port, mc_entry->macaddr,
1982 ehea_error("failed deregistering mcast MAC");
1992 static void ehea_allmulti(struct net_device *dev, int enable)
1994 struct ehea_port *port = netdev_priv(dev);
1997 if (!port->allmulti) {
1999 /* Enable ALLMULTI */
2000 ehea_drop_multicast_list(dev);
2001 hret = ehea_multicast_reg_helper(port, 0, H_REG_BCMC);
2005 ehea_error("failed enabling IFF_ALLMULTI");
2009 /* Disable ALLMULTI */
2010 hret = ehea_multicast_reg_helper(port, 0, H_DEREG_BCMC);
2014 ehea_error("failed disabling IFF_ALLMULTI");
2018 static void ehea_add_multicast_entry(struct ehea_port *port, u8 *mc_mac_addr)
2020 struct ehea_mc_list *ehea_mcl_entry;
2023 ehea_mcl_entry = kzalloc(sizeof(*ehea_mcl_entry), GFP_ATOMIC);
2024 if (!ehea_mcl_entry) {
2025 ehea_error("no mem for mcl_entry");
2029 INIT_LIST_HEAD(&ehea_mcl_entry->list);
2031 memcpy(&ehea_mcl_entry->macaddr, mc_mac_addr, ETH_ALEN);
2033 hret = ehea_multicast_reg_helper(port, ehea_mcl_entry->macaddr,
2036 list_add(&ehea_mcl_entry->list, &port->mc_list->list);
2038 ehea_error("failed registering mcast MAC");
2039 kfree(ehea_mcl_entry);
2043 static void ehea_set_multicast_list(struct net_device *dev)
2045 struct ehea_port *port = netdev_priv(dev);
2046 struct netdev_hw_addr *ha;
2049 if (dev->flags & IFF_PROMISC) {
2050 ehea_promiscuous(dev, 1);
2053 ehea_promiscuous(dev, 0);
2055 if (dev->flags & IFF_ALLMULTI) {
2056 ehea_allmulti(dev, 1);
2059 ehea_allmulti(dev, 0);
2061 if (!netdev_mc_empty(dev)) {
2062 ret = ehea_drop_multicast_list(dev);
2064 /* Dropping the current multicast list failed.
2065 * Enabling ALL_MULTI is the best we can do.
2067 ehea_allmulti(dev, 1);
2070 if (netdev_mc_count(dev) > port->adapter->max_mc_mac) {
2071 ehea_info("Mcast registration limit reached (0x%llx). "
2073 port->adapter->max_mc_mac);
2077 netdev_for_each_mc_addr(ha, dev)
2078 ehea_add_multicast_entry(port, ha->addr);
2082 ehea_update_bcmc_registrations();
2085 static int ehea_change_mtu(struct net_device *dev, int new_mtu)
2087 if ((new_mtu < 68) || (new_mtu > EHEA_MAX_PACKET_SIZE))
2093 static void ehea_xmit2(struct sk_buff *skb, struct net_device *dev,
2094 struct ehea_swqe *swqe, u32 lkey)
2096 if (skb->protocol == htons(ETH_P_IP)) {
2097 const struct iphdr *iph = ip_hdr(skb);
2100 swqe->tx_control |= EHEA_SWQE_CRC
2101 | EHEA_SWQE_IP_CHECKSUM
2102 | EHEA_SWQE_TCP_CHECKSUM
2103 | EHEA_SWQE_IMM_DATA_PRESENT
2104 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2106 write_ip_start_end(swqe, skb);
2108 if (iph->protocol == IPPROTO_UDP) {
2109 if ((iph->frag_off & IP_MF) ||
2110 (iph->frag_off & IP_OFFSET))
2111 /* IP fragment, so don't change cs */
2112 swqe->tx_control &= ~EHEA_SWQE_TCP_CHECKSUM;
2114 write_udp_offset_end(swqe, skb);
2115 } else if (iph->protocol == IPPROTO_TCP) {
2116 write_tcp_offset_end(swqe, skb);
2119 /* icmp (big data) and ip segmentation packets (all other ip
2120 packets) do not require any special handling */
2123 /* Other Ethernet Protocol */
2124 swqe->tx_control |= EHEA_SWQE_CRC
2125 | EHEA_SWQE_IMM_DATA_PRESENT
2126 | EHEA_SWQE_DESCRIPTORS_PRESENT;
2129 write_swqe2_data(skb, dev, swqe, lkey);
2132 static void ehea_xmit3(struct sk_buff *skb, struct net_device *dev,
2133 struct ehea_swqe *swqe)
2135 int nfrags = skb_shinfo(skb)->nr_frags;
2136 u8 *imm_data = &swqe->u.immdata_nodesc.immediate_data[0];
2140 if (skb->protocol == htons(ETH_P_IP)) {
2141 const struct iphdr *iph = ip_hdr(skb);
2144 write_ip_start_end(swqe, skb);
2146 if (iph->protocol == IPPROTO_TCP) {
2147 swqe->tx_control |= EHEA_SWQE_CRC
2148 | EHEA_SWQE_IP_CHECKSUM
2149 | EHEA_SWQE_TCP_CHECKSUM
2150 | EHEA_SWQE_IMM_DATA_PRESENT;
2152 write_tcp_offset_end(swqe, skb);
2154 } else if (iph->protocol == IPPROTO_UDP) {
2155 if ((iph->frag_off & IP_MF) ||
2156 (iph->frag_off & IP_OFFSET))
2157 /* IP fragment, so don't change cs */
2158 swqe->tx_control |= EHEA_SWQE_CRC
2159 | EHEA_SWQE_IMM_DATA_PRESENT;
2161 swqe->tx_control |= EHEA_SWQE_CRC
2162 | EHEA_SWQE_IP_CHECKSUM
2163 | EHEA_SWQE_TCP_CHECKSUM
2164 | EHEA_SWQE_IMM_DATA_PRESENT;
2166 write_udp_offset_end(swqe, skb);
2169 /* icmp (big data) and
2170 ip segmentation packets (all other ip packets) */
2171 swqe->tx_control |= EHEA_SWQE_CRC
2172 | EHEA_SWQE_IP_CHECKSUM
2173 | EHEA_SWQE_IMM_DATA_PRESENT;
2176 /* Other Ethernet Protocol */
2177 swqe->tx_control |= EHEA_SWQE_CRC | EHEA_SWQE_IMM_DATA_PRESENT;
2179 /* copy (immediate) data */
2181 /* data is in a single piece */
2182 skb_copy_from_linear_data(skb, imm_data, skb->len);
2184 /* first copy data from the skb->data buffer ... */
2185 skb_copy_from_linear_data(skb, imm_data,
2187 imm_data += skb_headlen(skb);
2189 /* ... then copy data from the fragments */
2190 for (i = 0; i < nfrags; i++) {
2191 frag = &skb_shinfo(skb)->frags[i];
2193 page_address(frag->page) + frag->page_offset,
2195 imm_data += frag->size;
2198 swqe->immediate_data_length = skb->len;
2202 static inline int ehea_hash_skb(struct sk_buff *skb, int num_qps)
2207 if ((skb->protocol == htons(ETH_P_IP)) &&
2208 (ip_hdr(skb)->protocol == IPPROTO_TCP)) {
2209 tcp = (struct tcphdr *)(skb_network_header(skb) +
2210 (ip_hdr(skb)->ihl * 4));
2211 tmp = (tcp->source + (tcp->dest << 16)) % 31;
2212 tmp += ip_hdr(skb)->daddr % 31;
2213 return tmp % num_qps;
2218 static int ehea_start_xmit(struct sk_buff *skb, struct net_device *dev)
2220 struct ehea_port *port = netdev_priv(dev);
2221 struct ehea_swqe *swqe;
2222 unsigned long flags;
2225 struct ehea_port_res *pr;
2227 pr = &port->port_res[ehea_hash_skb(skb, port->num_tx_qps)];
2229 if (!spin_trylock(&pr->xmit_lock))
2230 return NETDEV_TX_BUSY;
2232 if (pr->queue_stopped) {
2233 spin_unlock(&pr->xmit_lock);
2234 return NETDEV_TX_BUSY;
2237 swqe = ehea_get_swqe(pr->qp, &swqe_index);
2238 memset(swqe, 0, SWQE_HEADER_SIZE);
2239 atomic_dec(&pr->swqe_avail);
2241 if (skb->len <= SWQE3_MAX_IMM) {
2242 u32 sig_iv = port->sig_comp_iv;
2243 u32 swqe_num = pr->swqe_id_counter;
2244 ehea_xmit3(skb, dev, swqe);
2245 swqe->wr_id = EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE3_TYPE)
2246 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, swqe_num);
2247 if (pr->swqe_ll_count >= (sig_iv - 1)) {
2248 swqe->wr_id |= EHEA_BMASK_SET(EHEA_WR_ID_REFILL,
2250 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2251 pr->swqe_ll_count = 0;
2253 pr->swqe_ll_count += 1;
2256 EHEA_BMASK_SET(EHEA_WR_ID_TYPE, EHEA_SWQE2_TYPE)
2257 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT, pr->swqe_id_counter)
2258 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL, 1)
2259 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX, pr->sq_skba.index);
2260 pr->sq_skba.arr[pr->sq_skba.index] = skb;
2262 pr->sq_skba.index++;
2263 pr->sq_skba.index &= (pr->sq_skba.len - 1);
2265 lkey = pr->send_mr.lkey;
2266 ehea_xmit2(skb, dev, swqe, lkey);
2267 swqe->tx_control |= EHEA_SWQE_SIGNALLED_COMPLETION;
2269 pr->swqe_id_counter += 1;
2271 if (port->vgrp && vlan_tx_tag_present(skb)) {
2272 swqe->tx_control |= EHEA_SWQE_VLAN_INSERT;
2273 swqe->vlan_tag = vlan_tx_tag_get(skb);
2276 if (netif_msg_tx_queued(port)) {
2277 ehea_info("post swqe on QP %d", pr->qp->init_attr.qp_nr);
2278 ehea_dump(swqe, 512, "swqe");
2281 if (unlikely(test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))) {
2282 netif_stop_queue(dev);
2283 swqe->tx_control |= EHEA_SWQE_PURGE;
2286 ehea_post_swqe(pr->qp, swqe);
2289 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2290 spin_lock_irqsave(&pr->netif_queue, flags);
2291 if (unlikely(atomic_read(&pr->swqe_avail) <= 1)) {
2292 pr->p_stats.queue_stopped++;
2293 netif_stop_queue(dev);
2294 pr->queue_stopped = 1;
2296 spin_unlock_irqrestore(&pr->netif_queue, flags);
2298 dev->trans_start = jiffies; /* NETIF_F_LLTX driver :( */
2299 spin_unlock(&pr->xmit_lock);
2301 return NETDEV_TX_OK;
2304 static void ehea_vlan_rx_register(struct net_device *dev,
2305 struct vlan_group *grp)
2307 struct ehea_port *port = netdev_priv(dev);
2308 struct ehea_adapter *adapter = port->adapter;
2309 struct hcp_ehea_port_cb1 *cb1;
2314 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2316 ehea_error("no mem for cb1");
2320 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2321 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2322 if (hret != H_SUCCESS)
2323 ehea_error("modify_ehea_port failed");
2325 free_page((unsigned long)cb1);
2330 static void ehea_vlan_rx_add_vid(struct net_device *dev, unsigned short vid)
2332 struct ehea_port *port = netdev_priv(dev);
2333 struct ehea_adapter *adapter = port->adapter;
2334 struct hcp_ehea_port_cb1 *cb1;
2338 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2340 ehea_error("no mem for cb1");
2344 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2345 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2346 if (hret != H_SUCCESS) {
2347 ehea_error("query_ehea_port failed");
2352 cb1->vlan_filter[index] |= ((u64)(0x8000000000000000 >> (vid & 0x3F)));
2354 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2355 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2356 if (hret != H_SUCCESS)
2357 ehea_error("modify_ehea_port failed");
2359 free_page((unsigned long)cb1);
2363 static void ehea_vlan_rx_kill_vid(struct net_device *dev, unsigned short vid)
2365 struct ehea_port *port = netdev_priv(dev);
2366 struct ehea_adapter *adapter = port->adapter;
2367 struct hcp_ehea_port_cb1 *cb1;
2371 vlan_group_set_device(port->vgrp, vid, NULL);
2373 cb1 = (void *)get_zeroed_page(GFP_KERNEL);
2375 ehea_error("no mem for cb1");
2379 hret = ehea_h_query_ehea_port(adapter->handle, port->logical_port_id,
2380 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2381 if (hret != H_SUCCESS) {
2382 ehea_error("query_ehea_port failed");
2387 cb1->vlan_filter[index] &= ~((u64)(0x8000000000000000 >> (vid & 0x3F)));
2389 hret = ehea_h_modify_ehea_port(adapter->handle, port->logical_port_id,
2390 H_PORT_CB1, H_PORT_CB1_ALL, cb1);
2391 if (hret != H_SUCCESS)
2392 ehea_error("modify_ehea_port failed");
2394 free_page((unsigned long)cb1);
2397 int ehea_activate_qp(struct ehea_adapter *adapter, struct ehea_qp *qp)
2403 struct hcp_modify_qp_cb0 *cb0;
2405 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2411 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2412 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2413 if (hret != H_SUCCESS) {
2414 ehea_error("query_ehea_qp failed (1)");
2418 cb0->qp_ctl_reg = H_QP_CR_STATE_INITIALIZED;
2419 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2420 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2421 &dummy64, &dummy64, &dummy16, &dummy16);
2422 if (hret != H_SUCCESS) {
2423 ehea_error("modify_ehea_qp failed (1)");
2427 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2428 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2429 if (hret != H_SUCCESS) {
2430 ehea_error("query_ehea_qp failed (2)");
2434 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_INITIALIZED;
2435 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2436 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2437 &dummy64, &dummy64, &dummy16, &dummy16);
2438 if (hret != H_SUCCESS) {
2439 ehea_error("modify_ehea_qp failed (2)");
2443 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2444 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2445 if (hret != H_SUCCESS) {
2446 ehea_error("query_ehea_qp failed (3)");
2450 cb0->qp_ctl_reg = H_QP_CR_ENABLED | H_QP_CR_STATE_RDY2SND;
2451 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2452 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG, 1), cb0,
2453 &dummy64, &dummy64, &dummy16, &dummy16);
2454 if (hret != H_SUCCESS) {
2455 ehea_error("modify_ehea_qp failed (3)");
2459 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2460 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF), cb0);
2461 if (hret != H_SUCCESS) {
2462 ehea_error("query_ehea_qp failed (4)");
2468 free_page((unsigned long)cb0);
2472 static int ehea_port_res_setup(struct ehea_port *port, int def_qps,
2476 struct port_res_cfg pr_cfg, pr_cfg_small_rx;
2477 enum ehea_eq_type eq_type = EHEA_EQ;
2479 port->qp_eq = ehea_create_eq(port->adapter, eq_type,
2480 EHEA_MAX_ENTRIES_EQ, 1);
2483 ehea_error("ehea_create_eq failed (qp_eq)");
2487 pr_cfg.max_entries_rcq = rq1_entries + rq2_entries + rq3_entries;
2488 pr_cfg.max_entries_scq = sq_entries * 2;
2489 pr_cfg.max_entries_sq = sq_entries;
2490 pr_cfg.max_entries_rq1 = rq1_entries;
2491 pr_cfg.max_entries_rq2 = rq2_entries;
2492 pr_cfg.max_entries_rq3 = rq3_entries;
2494 pr_cfg_small_rx.max_entries_rcq = 1;
2495 pr_cfg_small_rx.max_entries_scq = sq_entries;
2496 pr_cfg_small_rx.max_entries_sq = sq_entries;
2497 pr_cfg_small_rx.max_entries_rq1 = 1;
2498 pr_cfg_small_rx.max_entries_rq2 = 1;
2499 pr_cfg_small_rx.max_entries_rq3 = 1;
2501 for (i = 0; i < def_qps; i++) {
2502 ret = ehea_init_port_res(port, &port->port_res[i], &pr_cfg, i);
2506 for (i = def_qps; i < def_qps + add_tx_qps; i++) {
2507 ret = ehea_init_port_res(port, &port->port_res[i],
2508 &pr_cfg_small_rx, i);
2517 ehea_clean_portres(port, &port->port_res[i]);
2520 ehea_destroy_eq(port->qp_eq);
2524 static int ehea_clean_all_portres(struct ehea_port *port)
2529 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2530 ret |= ehea_clean_portres(port, &port->port_res[i]);
2532 ret |= ehea_destroy_eq(port->qp_eq);
2537 static void ehea_remove_adapter_mr(struct ehea_adapter *adapter)
2539 if (adapter->active_ports)
2542 ehea_rem_mr(&adapter->mr);
2545 static int ehea_add_adapter_mr(struct ehea_adapter *adapter)
2547 if (adapter->active_ports)
2550 return ehea_reg_kernel_mr(adapter, &adapter->mr);
2553 static int ehea_up(struct net_device *dev)
2556 struct ehea_port *port = netdev_priv(dev);
2558 if (port->state == EHEA_PORT_UP)
2561 ret = ehea_port_res_setup(port, port->num_def_qps,
2562 port->num_add_tx_qps);
2564 ehea_error("port_res_failed");
2568 /* Set default QP for this port */
2569 ret = ehea_configure_port(port);
2571 ehea_error("ehea_configure_port failed. ret:%d", ret);
2575 ret = ehea_reg_interrupts(dev);
2577 ehea_error("reg_interrupts failed. ret:%d", ret);
2581 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2582 ret = ehea_activate_qp(port->adapter, port->port_res[i].qp);
2584 ehea_error("activate_qp failed");
2589 for (i = 0; i < port->num_def_qps; i++) {
2590 ret = ehea_fill_port_res(&port->port_res[i]);
2592 ehea_error("out_free_irqs");
2597 ret = ehea_broadcast_reg_helper(port, H_REG_BCMC);
2603 port->state = EHEA_PORT_UP;
2609 ehea_free_interrupts(dev);
2612 ehea_clean_all_portres(port);
2615 ehea_info("Failed starting %s. ret=%i", dev->name, ret);
2617 ehea_update_bcmc_registrations();
2618 ehea_update_firmware_handles();
2623 static void port_napi_disable(struct ehea_port *port)
2627 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2628 napi_disable(&port->port_res[i].napi);
2631 static void port_napi_enable(struct ehea_port *port)
2635 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++)
2636 napi_enable(&port->port_res[i].napi);
2639 static int ehea_open(struct net_device *dev)
2642 struct ehea_port *port = netdev_priv(dev);
2644 mutex_lock(&port->port_lock);
2646 if (netif_msg_ifup(port))
2647 ehea_info("enabling port %s", dev->name);
2651 port_napi_enable(port);
2652 netif_start_queue(dev);
2655 mutex_unlock(&port->port_lock);
2660 static int ehea_down(struct net_device *dev)
2663 struct ehea_port *port = netdev_priv(dev);
2665 if (port->state == EHEA_PORT_DOWN)
2668 ehea_drop_multicast_list(dev);
2669 ehea_broadcast_reg_helper(port, H_DEREG_BCMC);
2671 ehea_free_interrupts(dev);
2673 port->state = EHEA_PORT_DOWN;
2675 ehea_update_bcmc_registrations();
2677 ret = ehea_clean_all_portres(port);
2679 ehea_info("Failed freeing resources for %s. ret=%i",
2682 ehea_update_firmware_handles();
2687 static int ehea_stop(struct net_device *dev)
2690 struct ehea_port *port = netdev_priv(dev);
2692 if (netif_msg_ifdown(port))
2693 ehea_info("disabling port %s", dev->name);
2695 set_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2696 cancel_work_sync(&port->reset_task);
2697 mutex_lock(&port->port_lock);
2698 netif_stop_queue(dev);
2699 port_napi_disable(port);
2700 ret = ehea_down(dev);
2701 mutex_unlock(&port->port_lock);
2702 clear_bit(__EHEA_DISABLE_PORT_RESET, &port->flags);
2706 static void ehea_purge_sq(struct ehea_qp *orig_qp)
2708 struct ehea_qp qp = *orig_qp;
2709 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2710 struct ehea_swqe *swqe;
2714 for (i = 0; i < init_attr->act_nr_send_wqes; i++) {
2715 swqe = ehea_get_swqe(&qp, &wqe_index);
2716 swqe->tx_control |= EHEA_SWQE_PURGE;
2720 static void ehea_flush_sq(struct ehea_port *port)
2724 for (i = 0; i < port->num_def_qps + port->num_add_tx_qps; i++) {
2725 struct ehea_port_res *pr = &port->port_res[i];
2726 int swqe_max = pr->sq_skba_size - 2 - pr->swqe_ll_count;
2728 while (atomic_read(&pr->swqe_avail) < swqe_max) {
2731 ehea_error("WARNING: sq not flushed completely");
2738 int ehea_stop_qps(struct net_device *dev)
2740 struct ehea_port *port = netdev_priv(dev);
2741 struct ehea_adapter *adapter = port->adapter;
2742 struct hcp_modify_qp_cb0 *cb0;
2750 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2756 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2757 struct ehea_port_res *pr = &port->port_res[i];
2758 struct ehea_qp *qp = pr->qp;
2760 /* Purge send queue */
2763 /* Disable queue pair */
2764 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2765 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2767 if (hret != H_SUCCESS) {
2768 ehea_error("query_ehea_qp failed (1)");
2772 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2773 cb0->qp_ctl_reg &= ~H_QP_CR_ENABLED;
2775 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2776 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2778 &dummy64, &dummy16, &dummy16);
2779 if (hret != H_SUCCESS) {
2780 ehea_error("modify_ehea_qp failed (1)");
2784 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2785 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2787 if (hret != H_SUCCESS) {
2788 ehea_error("query_ehea_qp failed (2)");
2792 /* deregister shared memory regions */
2793 dret = ehea_rem_smrs(pr);
2795 ehea_error("unreg shared memory region failed");
2802 free_page((unsigned long)cb0);
2807 void ehea_update_rqs(struct ehea_qp *orig_qp, struct ehea_port_res *pr)
2809 struct ehea_qp qp = *orig_qp;
2810 struct ehea_qp_init_attr *init_attr = &qp.init_attr;
2811 struct ehea_rwqe *rwqe;
2812 struct sk_buff **skba_rq2 = pr->rq2_skba.arr;
2813 struct sk_buff **skba_rq3 = pr->rq3_skba.arr;
2814 struct sk_buff *skb;
2815 u32 lkey = pr->recv_mr.lkey;
2821 for (i = 0; i < init_attr->act_nr_rwqes_rq2 + 1; i++) {
2822 rwqe = ehea_get_next_rwqe(&qp, 2);
2823 rwqe->sg_list[0].l_key = lkey;
2824 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2825 skb = skba_rq2[index];
2827 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2830 for (i = 0; i < init_attr->act_nr_rwqes_rq3 + 1; i++) {
2831 rwqe = ehea_get_next_rwqe(&qp, 3);
2832 rwqe->sg_list[0].l_key = lkey;
2833 index = EHEA_BMASK_GET(EHEA_WR_ID_INDEX, rwqe->wr_id);
2834 skb = skba_rq3[index];
2836 rwqe->sg_list[0].vaddr = ehea_map_vaddr(skb->data);
2840 int ehea_restart_qps(struct net_device *dev)
2842 struct ehea_port *port = netdev_priv(dev);
2843 struct ehea_adapter *adapter = port->adapter;
2847 struct hcp_modify_qp_cb0 *cb0;
2852 cb0 = (void *)get_zeroed_page(GFP_KERNEL);
2858 for (i = 0; i < (port->num_def_qps + port->num_add_tx_qps); i++) {
2859 struct ehea_port_res *pr = &port->port_res[i];
2860 struct ehea_qp *qp = pr->qp;
2862 ret = ehea_gen_smrs(pr);
2864 ehea_error("creation of shared memory regions failed");
2868 ehea_update_rqs(qp, pr);
2870 /* Enable queue pair */
2871 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2872 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2874 if (hret != H_SUCCESS) {
2875 ehea_error("query_ehea_qp failed (1)");
2879 cb0->qp_ctl_reg = (cb0->qp_ctl_reg & H_QP_CR_RES_STATE) << 8;
2880 cb0->qp_ctl_reg |= H_QP_CR_ENABLED;
2882 hret = ehea_h_modify_ehea_qp(adapter->handle, 0, qp->fw_handle,
2883 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG,
2885 &dummy64, &dummy16, &dummy16);
2886 if (hret != H_SUCCESS) {
2887 ehea_error("modify_ehea_qp failed (1)");
2891 hret = ehea_h_query_ehea_qp(adapter->handle, 0, qp->fw_handle,
2892 EHEA_BMASK_SET(H_QPCB0_ALL, 0xFFFF),
2894 if (hret != H_SUCCESS) {
2895 ehea_error("query_ehea_qp failed (2)");
2899 /* refill entire queue */
2900 ehea_refill_rq1(pr, pr->rq1_skba.index, 0);
2901 ehea_refill_rq2(pr, 0);
2902 ehea_refill_rq3(pr, 0);
2905 free_page((unsigned long)cb0);
2910 static void ehea_reset_port(struct work_struct *work)
2913 struct ehea_port *port =
2914 container_of(work, struct ehea_port, reset_task);
2915 struct net_device *dev = port->netdev;
2917 mutex_lock(&dlpar_mem_lock);
2919 mutex_lock(&port->port_lock);
2920 netif_stop_queue(dev);
2922 port_napi_disable(port);
2930 ehea_set_multicast_list(dev);
2932 if (netif_msg_timer(port))
2933 ehea_info("Device %s resetted successfully", dev->name);
2935 port_napi_enable(port);
2937 netif_wake_queue(dev);
2939 mutex_unlock(&port->port_lock);
2940 mutex_unlock(&dlpar_mem_lock);
2943 static void ehea_rereg_mrs(struct work_struct *work)
2946 struct ehea_adapter *adapter;
2948 ehea_info("LPAR memory changed - re-initializing driver");
2950 list_for_each_entry(adapter, &adapter_list, list)
2951 if (adapter->active_ports) {
2952 /* Shutdown all ports */
2953 for (i = 0; i < EHEA_MAX_PORTS; i++) {
2954 struct ehea_port *port = adapter->port[i];
2955 struct net_device *dev;
2962 if (dev->flags & IFF_UP) {
2963 mutex_lock(&port->port_lock);
2964 netif_stop_queue(dev);
2965 ehea_flush_sq(port);
2966 ret = ehea_stop_qps(dev);
2968 mutex_unlock(&port->port_lock);
2971 port_napi_disable(port);
2972 mutex_unlock(&port->port_lock);
2974 reset_sq_restart_flag(port);
2977 /* Unregister old memory region */
2978 ret = ehea_rem_mr(&adapter->mr);
2980 ehea_error("unregister MR failed - driver"
2986 clear_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
2988 list_for_each_entry(adapter, &adapter_list, list)
2989 if (adapter->active_ports) {
2990 /* Register new memory region */
2991 ret = ehea_reg_kernel_mr(adapter, &adapter->mr);
2993 ehea_error("register MR failed - driver"
2998 /* Restart all ports */
2999 for (i = 0; i < EHEA_MAX_PORTS; i++) {
3000 struct ehea_port *port = adapter->port[i];
3003 struct net_device *dev = port->netdev;
3005 if (dev->flags & IFF_UP) {
3006 mutex_lock(&port->port_lock);
3007 port_napi_enable(port);
3008 ret = ehea_restart_qps(dev);
3011 netif_wake_queue(dev);
3012 mutex_unlock(&port->port_lock);
3017 ehea_info("re-initializing driver complete");
3022 static void ehea_tx_watchdog(struct net_device *dev)
3024 struct ehea_port *port = netdev_priv(dev);
3026 if (netif_carrier_ok(dev) &&
3027 !test_bit(__EHEA_STOP_XFER, &ehea_driver_flags))
3028 ehea_schedule_port_reset(port);
3031 int ehea_sense_adapter_attr(struct ehea_adapter *adapter)
3033 struct hcp_query_ehea *cb;
3037 cb = (void *)get_zeroed_page(GFP_KERNEL);
3043 hret = ehea_h_query_ehea(adapter->handle, cb);
3045 if (hret != H_SUCCESS) {
3050 adapter->max_mc_mac = cb->max_mc_mac - 1;
3054 free_page((unsigned long)cb);
3059 int ehea_get_jumboframe_status(struct ehea_port *port, int *jumbo)
3061 struct hcp_ehea_port_cb4 *cb4;
3067 /* (Try to) enable *jumbo frames */
3068 cb4 = (void *)get_zeroed_page(GFP_KERNEL);
3070 ehea_error("no mem for cb4");
3074 hret = ehea_h_query_ehea_port(port->adapter->handle,
3075 port->logical_port_id,
3077 H_PORT_CB4_JUMBO, cb4);
3078 if (hret == H_SUCCESS) {
3079 if (cb4->jumbo_frame)
3082 cb4->jumbo_frame = 1;
3083 hret = ehea_h_modify_ehea_port(port->adapter->
3090 if (hret == H_SUCCESS)
3096 free_page((unsigned long)cb4);
3102 static ssize_t ehea_show_port_id(struct device *dev,
3103 struct device_attribute *attr, char *buf)
3105 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3106 return sprintf(buf, "%d", port->logical_port_id);
3109 static DEVICE_ATTR(log_port_id, S_IRUSR | S_IRGRP | S_IROTH, ehea_show_port_id,
3112 static void __devinit logical_port_release(struct device *dev)
3114 struct ehea_port *port = container_of(dev, struct ehea_port, ofdev.dev);
3115 of_node_put(port->ofdev.dev.of_node);
3118 static struct device *ehea_register_port(struct ehea_port *port,
3119 struct device_node *dn)
3123 port->ofdev.dev.of_node = of_node_get(dn);
3124 port->ofdev.dev.parent = &port->adapter->ofdev->dev;
3125 port->ofdev.dev.bus = &ibmebus_bus_type;
3127 dev_set_name(&port->ofdev.dev, "port%d", port_name_cnt++);
3128 port->ofdev.dev.release = logical_port_release;
3130 ret = of_device_register(&port->ofdev);
3132 ehea_error("failed to register device. ret=%d", ret);
3136 ret = device_create_file(&port->ofdev.dev, &dev_attr_log_port_id);
3138 ehea_error("failed to register attributes, ret=%d", ret);
3139 goto out_unreg_of_dev;
3142 return &port->ofdev.dev;
3145 of_device_unregister(&port->ofdev);
3150 static void ehea_unregister_port(struct ehea_port *port)
3152 device_remove_file(&port->ofdev.dev, &dev_attr_log_port_id);
3153 of_device_unregister(&port->ofdev);
3156 static const struct net_device_ops ehea_netdev_ops = {
3157 .ndo_open = ehea_open,
3158 .ndo_stop = ehea_stop,
3159 .ndo_start_xmit = ehea_start_xmit,
3160 #ifdef CONFIG_NET_POLL_CONTROLLER
3161 .ndo_poll_controller = ehea_netpoll,
3163 .ndo_get_stats = ehea_get_stats,
3164 .ndo_set_mac_address = ehea_set_mac_addr,
3165 .ndo_validate_addr = eth_validate_addr,
3166 .ndo_set_multicast_list = ehea_set_multicast_list,
3167 .ndo_change_mtu = ehea_change_mtu,
3168 .ndo_vlan_rx_register = ehea_vlan_rx_register,
3169 .ndo_vlan_rx_add_vid = ehea_vlan_rx_add_vid,
3170 .ndo_vlan_rx_kill_vid = ehea_vlan_rx_kill_vid,
3171 .ndo_tx_timeout = ehea_tx_watchdog,
3174 struct ehea_port *ehea_setup_single_port(struct ehea_adapter *adapter,
3175 u32 logical_port_id,
3176 struct device_node *dn)
3179 struct net_device *dev;
3180 struct ehea_port *port;
3181 struct device *port_dev;
3184 /* allocate memory for the port structures */
3185 dev = alloc_etherdev(sizeof(struct ehea_port));
3188 ehea_error("no mem for net_device");
3193 port = netdev_priv(dev);
3195 mutex_init(&port->port_lock);
3196 port->state = EHEA_PORT_DOWN;
3197 port->sig_comp_iv = sq_entries / 10;
3199 port->adapter = adapter;
3201 port->logical_port_id = logical_port_id;
3203 port->msg_enable = netif_msg_init(msg_level, EHEA_MSG_DEFAULT);
3205 port->mc_list = kzalloc(sizeof(struct ehea_mc_list), GFP_KERNEL);
3206 if (!port->mc_list) {
3208 goto out_free_ethdev;
3211 INIT_LIST_HEAD(&port->mc_list->list);
3213 ret = ehea_sense_port_attr(port);
3215 goto out_free_mc_list;
3217 port_dev = ehea_register_port(port, dn);
3219 goto out_free_mc_list;
3221 SET_NETDEV_DEV(dev, port_dev);
3223 /* initialize net_device structure */
3224 memcpy(dev->dev_addr, &port->mac_addr, ETH_ALEN);
3226 dev->netdev_ops = &ehea_netdev_ops;
3227 ehea_set_ethtool_ops(dev);
3229 dev->features = NETIF_F_SG | NETIF_F_FRAGLIST | NETIF_F_TSO
3230 | NETIF_F_HIGHDMA | NETIF_F_IP_CSUM | NETIF_F_HW_VLAN_TX
3231 | NETIF_F_HW_VLAN_RX | NETIF_F_HW_VLAN_FILTER
3233 dev->watchdog_timeo = EHEA_WATCH_DOG_TIMEOUT;
3235 INIT_WORK(&port->reset_task, ehea_reset_port);
3237 ret = register_netdev(dev);
3239 ehea_error("register_netdev failed. ret=%d", ret);
3240 goto out_unreg_port;
3243 port->lro_max_aggr = lro_max_aggr;
3245 ret = ehea_get_jumboframe_status(port, &jumbo);
3247 ehea_error("failed determining jumbo frame status for %s",
3248 port->netdev->name);
3250 ehea_info("%s: Jumbo frames are %sabled", dev->name,
3251 jumbo == 1 ? "en" : "dis");
3253 adapter->active_ports++;
3258 ehea_unregister_port(port);
3261 kfree(port->mc_list);
3267 ehea_error("setting up logical port with id=%d failed, ret=%d",
3268 logical_port_id, ret);
3272 static void ehea_shutdown_single_port(struct ehea_port *port)
3274 struct ehea_adapter *adapter = port->adapter;
3275 unregister_netdev(port->netdev);
3276 ehea_unregister_port(port);
3277 kfree(port->mc_list);
3278 free_netdev(port->netdev);
3279 adapter->active_ports--;
3282 static int ehea_setup_ports(struct ehea_adapter *adapter)
3284 struct device_node *lhea_dn;
3285 struct device_node *eth_dn = NULL;
3287 const u32 *dn_log_port_id;
3290 lhea_dn = adapter->ofdev->dev.of_node;
3291 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3293 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3295 if (!dn_log_port_id) {
3296 ehea_error("bad device node: eth_dn name=%s",
3301 if (ehea_add_adapter_mr(adapter)) {
3302 ehea_error("creating MR failed");
3303 of_node_put(eth_dn);
3307 adapter->port[i] = ehea_setup_single_port(adapter,
3310 if (adapter->port[i])
3311 ehea_info("%s -> logical port id #%d",
3312 adapter->port[i]->netdev->name,
3315 ehea_remove_adapter_mr(adapter);
3322 static struct device_node *ehea_get_eth_dn(struct ehea_adapter *adapter,
3323 u32 logical_port_id)
3325 struct device_node *lhea_dn;
3326 struct device_node *eth_dn = NULL;
3327 const u32 *dn_log_port_id;
3329 lhea_dn = adapter->ofdev->dev.of_node;
3330 while ((eth_dn = of_get_next_child(lhea_dn, eth_dn))) {
3332 dn_log_port_id = of_get_property(eth_dn, "ibm,hea-port-no",
3335 if (*dn_log_port_id == logical_port_id)
3342 static ssize_t ehea_probe_port(struct device *dev,
3343 struct device_attribute *attr,
3344 const char *buf, size_t count)
3346 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3347 struct ehea_port *port;
3348 struct device_node *eth_dn = NULL;
3351 u32 logical_port_id;
3353 sscanf(buf, "%d", &logical_port_id);
3355 port = ehea_get_port(adapter, logical_port_id);
3358 ehea_info("adding port with logical port id=%d failed. port "
3359 "already configured as %s.", logical_port_id,
3360 port->netdev->name);
3364 eth_dn = ehea_get_eth_dn(adapter, logical_port_id);
3367 ehea_info("no logical port with id %d found", logical_port_id);
3371 if (ehea_add_adapter_mr(adapter)) {
3372 ehea_error("creating MR failed");
3376 port = ehea_setup_single_port(adapter, logical_port_id, eth_dn);
3378 of_node_put(eth_dn);
3381 for (i = 0; i < EHEA_MAX_PORTS; i++)
3382 if (!adapter->port[i]) {
3383 adapter->port[i] = port;
3387 ehea_info("added %s (logical port id=%d)", port->netdev->name,
3390 ehea_remove_adapter_mr(adapter);
3394 return (ssize_t) count;
3397 static ssize_t ehea_remove_port(struct device *dev,
3398 struct device_attribute *attr,
3399 const char *buf, size_t count)
3401 struct ehea_adapter *adapter = dev_get_drvdata(dev);
3402 struct ehea_port *port;
3404 u32 logical_port_id;
3406 sscanf(buf, "%d", &logical_port_id);
3408 port = ehea_get_port(adapter, logical_port_id);
3411 ehea_info("removed %s (logical port id=%d)", port->netdev->name,
3414 ehea_shutdown_single_port(port);
3416 for (i = 0; i < EHEA_MAX_PORTS; i++)
3417 if (adapter->port[i] == port) {
3418 adapter->port[i] = NULL;
3422 ehea_error("removing port with logical port id=%d failed. port "
3423 "not configured.", logical_port_id);
3427 ehea_remove_adapter_mr(adapter);
3429 return (ssize_t) count;
3432 static DEVICE_ATTR(probe_port, S_IWUSR, NULL, ehea_probe_port);
3433 static DEVICE_ATTR(remove_port, S_IWUSR, NULL, ehea_remove_port);
3435 int ehea_create_device_sysfs(struct platform_device *dev)
3437 int ret = device_create_file(&dev->dev, &dev_attr_probe_port);
3441 ret = device_create_file(&dev->dev, &dev_attr_remove_port);
3446 void ehea_remove_device_sysfs(struct platform_device *dev)
3448 device_remove_file(&dev->dev, &dev_attr_probe_port);
3449 device_remove_file(&dev->dev, &dev_attr_remove_port);
3452 static int __devinit ehea_probe_adapter(struct platform_device *dev,
3453 const struct of_device_id *id)
3455 struct ehea_adapter *adapter;
3456 const u64 *adapter_handle;
3459 if (!dev || !dev->dev.of_node) {
3460 ehea_error("Invalid ibmebus device probed");
3464 adapter = kzalloc(sizeof(*adapter), GFP_KERNEL);
3467 dev_err(&dev->dev, "no mem for ehea_adapter\n");
3471 list_add(&adapter->list, &adapter_list);
3473 adapter->ofdev = dev;
3475 adapter_handle = of_get_property(dev->dev.of_node, "ibm,hea-handle",
3478 adapter->handle = *adapter_handle;
3480 if (!adapter->handle) {
3481 dev_err(&dev->dev, "failed getting handle for adapter"
3482 " '%s'\n", dev->dev.of_node->full_name);
3487 adapter->pd = EHEA_PD_ID;
3489 dev_set_drvdata(&dev->dev, adapter);
3492 /* initialize adapter and ports */
3493 /* get adapter properties */
3494 ret = ehea_sense_adapter_attr(adapter);
3496 dev_err(&dev->dev, "sense_adapter_attr failed: %d\n", ret);
3500 adapter->neq = ehea_create_eq(adapter,
3501 EHEA_NEQ, EHEA_MAX_ENTRIES_EQ, 1);
3502 if (!adapter->neq) {
3504 dev_err(&dev->dev, "NEQ creation failed\n");
3508 tasklet_init(&adapter->neq_tasklet, ehea_neq_tasklet,
3509 (unsigned long)adapter);
3511 ret = ibmebus_request_irq(adapter->neq->attr.ist1,
3512 ehea_interrupt_neq, IRQF_DISABLED,
3513 "ehea_neq", adapter);
3515 dev_err(&dev->dev, "requesting NEQ IRQ failed\n");
3519 ret = ehea_create_device_sysfs(dev);
3523 ret = ehea_setup_ports(adapter);
3525 dev_err(&dev->dev, "setup_ports failed\n");
3526 goto out_rem_dev_sysfs;
3533 ehea_remove_device_sysfs(dev);
3536 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3539 ehea_destroy_eq(adapter->neq);
3542 list_del(&adapter->list);
3546 ehea_update_firmware_handles();
3551 static int __devexit ehea_remove(struct platform_device *dev)
3553 struct ehea_adapter *adapter = dev_get_drvdata(&dev->dev);
3556 for (i = 0; i < EHEA_MAX_PORTS; i++)
3557 if (adapter->port[i]) {
3558 ehea_shutdown_single_port(adapter->port[i]);
3559 adapter->port[i] = NULL;
3562 ehea_remove_device_sysfs(dev);
3564 flush_scheduled_work();
3566 ibmebus_free_irq(adapter->neq->attr.ist1, adapter);
3567 tasklet_kill(&adapter->neq_tasklet);
3569 ehea_destroy_eq(adapter->neq);
3570 ehea_remove_adapter_mr(adapter);
3571 list_del(&adapter->list);
3574 ehea_update_firmware_handles();
3579 void ehea_crash_handler(void)
3583 if (ehea_fw_handles.arr)
3584 for (i = 0; i < ehea_fw_handles.num_entries; i++)
3585 ehea_h_free_resource(ehea_fw_handles.arr[i].adh,
3586 ehea_fw_handles.arr[i].fwh,
3589 if (ehea_bcmc_regs.arr)
3590 for (i = 0; i < ehea_bcmc_regs.num_entries; i++)
3591 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs.arr[i].adh,
3592 ehea_bcmc_regs.arr[i].port_id,
3593 ehea_bcmc_regs.arr[i].reg_type,
3594 ehea_bcmc_regs.arr[i].macaddr,
3598 static int ehea_mem_notifier(struct notifier_block *nb,
3599 unsigned long action, void *data)
3601 int ret = NOTIFY_BAD;
3602 struct memory_notify *arg = data;
3604 mutex_lock(&dlpar_mem_lock);
3607 case MEM_CANCEL_OFFLINE:
3608 ehea_info("memory offlining canceled");
3609 /* Readd canceled memory block */
3611 ehea_info("memory is going online");
3612 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3613 if (ehea_add_sect_bmap(arg->start_pfn, arg->nr_pages))
3615 ehea_rereg_mrs(NULL);
3617 case MEM_GOING_OFFLINE:
3618 ehea_info("memory is going offline");
3619 set_bit(__EHEA_STOP_XFER, &ehea_driver_flags);
3620 if (ehea_rem_sect_bmap(arg->start_pfn, arg->nr_pages))
3622 ehea_rereg_mrs(NULL);
3628 ehea_update_firmware_handles();
3632 mutex_unlock(&dlpar_mem_lock);
3636 static struct notifier_block ehea_mem_nb = {
3637 .notifier_call = ehea_mem_notifier,
3640 static int ehea_reboot_notifier(struct notifier_block *nb,
3641 unsigned long action, void *unused)
3643 if (action == SYS_RESTART) {
3644 ehea_info("Reboot: freeing all eHEA resources");
3645 ibmebus_unregister_driver(&ehea_driver);
3650 static struct notifier_block ehea_reboot_nb = {
3651 .notifier_call = ehea_reboot_notifier,
3654 static int check_module_parm(void)
3658 if ((rq1_entries < EHEA_MIN_ENTRIES_QP) ||
3659 (rq1_entries > EHEA_MAX_ENTRIES_RQ1)) {
3660 ehea_info("Bad parameter: rq1_entries");
3663 if ((rq2_entries < EHEA_MIN_ENTRIES_QP) ||
3664 (rq2_entries > EHEA_MAX_ENTRIES_RQ2)) {
3665 ehea_info("Bad parameter: rq2_entries");
3668 if ((rq3_entries < EHEA_MIN_ENTRIES_QP) ||
3669 (rq3_entries > EHEA_MAX_ENTRIES_RQ3)) {
3670 ehea_info("Bad parameter: rq3_entries");
3673 if ((sq_entries < EHEA_MIN_ENTRIES_QP) ||
3674 (sq_entries > EHEA_MAX_ENTRIES_SQ)) {
3675 ehea_info("Bad parameter: sq_entries");
3682 static ssize_t ehea_show_capabilities(struct device_driver *drv,
3685 return sprintf(buf, "%d", EHEA_CAPABILITIES);
3688 static DRIVER_ATTR(capabilities, S_IRUSR | S_IRGRP | S_IROTH,
3689 ehea_show_capabilities, NULL);
3691 int __init ehea_module_init(void)
3695 printk(KERN_INFO "IBM eHEA ethernet device driver (Release %s)\n",
3699 INIT_WORK(&ehea_rereg_mr_task, ehea_rereg_mrs);
3700 memset(&ehea_fw_handles, 0, sizeof(ehea_fw_handles));
3701 memset(&ehea_bcmc_regs, 0, sizeof(ehea_bcmc_regs));
3703 mutex_init(&ehea_fw_handles.lock);
3704 spin_lock_init(&ehea_bcmc_regs.lock);
3706 ret = check_module_parm();
3710 ret = ehea_create_busmap();
3714 ret = register_reboot_notifier(&ehea_reboot_nb);
3716 ehea_info("failed registering reboot notifier");
3718 ret = register_memory_notifier(&ehea_mem_nb);
3720 ehea_info("failed registering memory remove notifier");
3722 ret = crash_shutdown_register(ehea_crash_handler);
3724 ehea_info("failed registering crash handler");
3726 ret = ibmebus_register_driver(&ehea_driver);
3728 ehea_error("failed registering eHEA device driver on ebus");
3732 ret = driver_create_file(&ehea_driver.driver,
3733 &driver_attr_capabilities);
3735 ehea_error("failed to register capabilities attribute, ret=%d",
3743 ibmebus_unregister_driver(&ehea_driver);
3745 unregister_memory_notifier(&ehea_mem_nb);
3746 unregister_reboot_notifier(&ehea_reboot_nb);
3747 crash_shutdown_unregister(ehea_crash_handler);
3752 static void __exit ehea_module_exit(void)
3756 flush_scheduled_work();
3757 driver_remove_file(&ehea_driver.driver, &driver_attr_capabilities);
3758 ibmebus_unregister_driver(&ehea_driver);
3759 unregister_reboot_notifier(&ehea_reboot_nb);
3760 ret = crash_shutdown_unregister(ehea_crash_handler);
3762 ehea_info("failed unregistering crash handler");
3763 unregister_memory_notifier(&ehea_mem_nb);
3764 kfree(ehea_fw_handles.arr);
3765 kfree(ehea_bcmc_regs.arr);
3766 ehea_destroy_busmap();
3769 module_init(ehea_module_init);
3770 module_exit(ehea_module_exit);