2 * linux/drivers/net/ethernet/ibm/ehea/ehea_main.c
4 * eHEA ethernet device driver for IBM eServer System p
6 * (C) Copyright IBM Corp. 2006
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31 #include <linux/device.h>
34 #include <linux/tcp.h>
35 #include <linux/udp.h>
37 #include <linux/list.h>
38 #include <linux/slab.h>
39 #include <linux/if_ether.h>
40 #include <linux/notifier.h>
41 #include <linux/reboot.h>
42 #include <linux/memory.h>
43 #include <asm/kexec.h>
44 #include <linux/mutex.h>
45 #include <linux/prefetch.h>
51 #include "ehea_phyp.h"
54 MODULE_LICENSE("GPL");
55 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
56 MODULE_DESCRIPTION("IBM eServer HEA Driver");
57 MODULE_VERSION(DRV_VERSION
);
60 static int msg_level
= -1;
61 static int rq1_entries
= EHEA_DEF_ENTRIES_RQ1
;
62 static int rq2_entries
= EHEA_DEF_ENTRIES_RQ2
;
63 static int rq3_entries
= EHEA_DEF_ENTRIES_RQ3
;
64 static int sq_entries
= EHEA_DEF_ENTRIES_SQ
;
65 static int use_mcs
= 1;
66 static int prop_carrier_state
;
68 module_param(msg_level
, int, 0);
69 module_param(rq1_entries
, int, 0);
70 module_param(rq2_entries
, int, 0);
71 module_param(rq3_entries
, int, 0);
72 module_param(sq_entries
, int, 0);
73 module_param(prop_carrier_state
, int, 0);
74 module_param(use_mcs
, int, 0);
76 MODULE_PARM_DESC(msg_level
, "msg_level");
77 MODULE_PARM_DESC(prop_carrier_state
, "Propagate carrier state of physical "
78 "port to stack. 1:yes, 0:no. Default = 0 ");
79 MODULE_PARM_DESC(rq3_entries
, "Number of entries for Receive Queue 3 "
80 "[2^x - 1], x = [7..14]. Default = "
81 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3
) ")");
82 MODULE_PARM_DESC(rq2_entries
, "Number of entries for Receive Queue 2 "
83 "[2^x - 1], x = [7..14]. Default = "
84 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2
) ")");
85 MODULE_PARM_DESC(rq1_entries
, "Number of entries for Receive Queue 1 "
86 "[2^x - 1], x = [7..14]. Default = "
87 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1
) ")");
88 MODULE_PARM_DESC(sq_entries
, " Number of entries for the Send Queue "
89 "[2^x - 1], x = [7..14]. Default = "
90 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ
) ")");
91 MODULE_PARM_DESC(use_mcs
, " Multiple receive queues, 1: enable, 0: disable, "
94 static int port_name_cnt
;
95 static LIST_HEAD(adapter_list
);
96 static unsigned long ehea_driver_flags
;
97 static DEFINE_MUTEX(dlpar_mem_lock
);
98 static struct ehea_fw_handle_array ehea_fw_handles
;
99 static struct ehea_bcmc_reg_array ehea_bcmc_regs
;
102 static int ehea_probe_adapter(struct platform_device
*dev
);
104 static int ehea_remove(struct platform_device
*dev
);
106 static const struct of_device_id ehea_module_device_table
[] = {
109 .compatible
= "IBM,lhea",
113 .compatible
= "IBM,lhea-ethernet",
117 MODULE_DEVICE_TABLE(of
, ehea_module_device_table
);
119 static const struct of_device_id ehea_device_table
[] = {
122 .compatible
= "IBM,lhea",
127 static struct platform_driver ehea_driver
= {
130 .owner
= THIS_MODULE
,
131 .of_match_table
= ehea_device_table
,
133 .probe
= ehea_probe_adapter
,
134 .remove
= ehea_remove
,
137 void ehea_dump(void *adr
, int len
, char *msg
)
140 unsigned char *deb
= adr
;
141 for (x
= 0; x
< len
; x
+= 16) {
142 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
143 msg
, deb
, x
, *((u64
*)&deb
[0]), *((u64
*)&deb
[8]));
148 static void ehea_schedule_port_reset(struct ehea_port
*port
)
150 if (!test_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
))
151 schedule_work(&port
->reset_task
);
154 static void ehea_update_firmware_handles(void)
156 struct ehea_fw_handle_entry
*arr
= NULL
;
157 struct ehea_adapter
*adapter
;
158 int num_adapters
= 0;
162 int num_fw_handles
, k
, l
;
164 /* Determine number of handles */
165 mutex_lock(&ehea_fw_handles
.lock
);
167 list_for_each_entry(adapter
, &adapter_list
, list
) {
170 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
171 struct ehea_port
*port
= adapter
->port
[k
];
173 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
177 num_portres
+= port
->num_def_qps
;
181 num_fw_handles
= num_adapters
* EHEA_NUM_ADAPTER_FW_HANDLES
+
182 num_ports
* EHEA_NUM_PORT_FW_HANDLES
+
183 num_portres
* EHEA_NUM_PORTRES_FW_HANDLES
;
185 if (num_fw_handles
) {
186 arr
= kcalloc(num_fw_handles
, sizeof(*arr
), GFP_KERNEL
);
188 goto out
; /* Keep the existing array */
192 list_for_each_entry(adapter
, &adapter_list
, list
) {
193 if (num_adapters
== 0)
196 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
197 struct ehea_port
*port
= adapter
->port
[k
];
199 if (!port
|| (port
->state
!= EHEA_PORT_UP
) ||
203 for (l
= 0; l
< port
->num_def_qps
; l
++) {
204 struct ehea_port_res
*pr
= &port
->port_res
[l
];
206 arr
[i
].adh
= adapter
->handle
;
207 arr
[i
++].fwh
= pr
->qp
->fw_handle
;
208 arr
[i
].adh
= adapter
->handle
;
209 arr
[i
++].fwh
= pr
->send_cq
->fw_handle
;
210 arr
[i
].adh
= adapter
->handle
;
211 arr
[i
++].fwh
= pr
->recv_cq
->fw_handle
;
212 arr
[i
].adh
= adapter
->handle
;
213 arr
[i
++].fwh
= pr
->eq
->fw_handle
;
214 arr
[i
].adh
= adapter
->handle
;
215 arr
[i
++].fwh
= pr
->send_mr
.handle
;
216 arr
[i
].adh
= adapter
->handle
;
217 arr
[i
++].fwh
= pr
->recv_mr
.handle
;
219 arr
[i
].adh
= adapter
->handle
;
220 arr
[i
++].fwh
= port
->qp_eq
->fw_handle
;
224 arr
[i
].adh
= adapter
->handle
;
225 arr
[i
++].fwh
= adapter
->neq
->fw_handle
;
227 if (adapter
->mr
.handle
) {
228 arr
[i
].adh
= adapter
->handle
;
229 arr
[i
++].fwh
= adapter
->mr
.handle
;
235 kfree(ehea_fw_handles
.arr
);
236 ehea_fw_handles
.arr
= arr
;
237 ehea_fw_handles
.num_entries
= i
;
239 mutex_unlock(&ehea_fw_handles
.lock
);
242 static void ehea_update_bcmc_registrations(void)
245 struct ehea_bcmc_reg_entry
*arr
= NULL
;
246 struct ehea_adapter
*adapter
;
247 struct ehea_mc_list
*mc_entry
;
248 int num_registrations
= 0;
252 spin_lock_irqsave(&ehea_bcmc_regs
.lock
, flags
);
254 /* Determine number of registrations */
255 list_for_each_entry(adapter
, &adapter_list
, list
)
256 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
257 struct ehea_port
*port
= adapter
->port
[k
];
259 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
262 num_registrations
+= 2; /* Broadcast registrations */
264 list_for_each_entry(mc_entry
, &port
->mc_list
->list
,list
)
265 num_registrations
+= 2;
268 if (num_registrations
) {
269 arr
= kcalloc(num_registrations
, sizeof(*arr
), GFP_ATOMIC
);
271 goto out
; /* Keep the existing array */
275 list_for_each_entry(adapter
, &adapter_list
, list
) {
276 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
277 struct ehea_port
*port
= adapter
->port
[k
];
279 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
282 if (num_registrations
== 0)
285 arr
[i
].adh
= adapter
->handle
;
286 arr
[i
].port_id
= port
->logical_port_id
;
287 arr
[i
].reg_type
= EHEA_BCMC_BROADCAST
|
289 arr
[i
++].macaddr
= port
->mac_addr
;
291 arr
[i
].adh
= adapter
->handle
;
292 arr
[i
].port_id
= port
->logical_port_id
;
293 arr
[i
].reg_type
= EHEA_BCMC_BROADCAST
|
294 EHEA_BCMC_VLANID_ALL
;
295 arr
[i
++].macaddr
= port
->mac_addr
;
296 num_registrations
-= 2;
298 list_for_each_entry(mc_entry
,
299 &port
->mc_list
->list
, list
) {
300 if (num_registrations
== 0)
303 arr
[i
].adh
= adapter
->handle
;
304 arr
[i
].port_id
= port
->logical_port_id
;
305 arr
[i
].reg_type
= EHEA_BCMC_MULTICAST
|
307 if (mc_entry
->macaddr
== 0)
308 arr
[i
].reg_type
|= EHEA_BCMC_SCOPE_ALL
;
309 arr
[i
++].macaddr
= mc_entry
->macaddr
;
311 arr
[i
].adh
= adapter
->handle
;
312 arr
[i
].port_id
= port
->logical_port_id
;
313 arr
[i
].reg_type
= EHEA_BCMC_MULTICAST
|
314 EHEA_BCMC_VLANID_ALL
;
315 if (mc_entry
->macaddr
== 0)
316 arr
[i
].reg_type
|= EHEA_BCMC_SCOPE_ALL
;
317 arr
[i
++].macaddr
= mc_entry
->macaddr
;
318 num_registrations
-= 2;
324 kfree(ehea_bcmc_regs
.arr
);
325 ehea_bcmc_regs
.arr
= arr
;
326 ehea_bcmc_regs
.num_entries
= i
;
328 spin_unlock_irqrestore(&ehea_bcmc_regs
.lock
, flags
);
331 static struct rtnl_link_stats64
*ehea_get_stats64(struct net_device
*dev
,
332 struct rtnl_link_stats64
*stats
)
334 struct ehea_port
*port
= netdev_priv(dev
);
335 u64 rx_packets
= 0, tx_packets
= 0, rx_bytes
= 0, tx_bytes
= 0;
338 for (i
= 0; i
< port
->num_def_qps
; i
++) {
339 rx_packets
+= port
->port_res
[i
].rx_packets
;
340 rx_bytes
+= port
->port_res
[i
].rx_bytes
;
343 for (i
= 0; i
< port
->num_def_qps
; i
++) {
344 tx_packets
+= port
->port_res
[i
].tx_packets
;
345 tx_bytes
+= port
->port_res
[i
].tx_bytes
;
348 stats
->tx_packets
= tx_packets
;
349 stats
->rx_bytes
= rx_bytes
;
350 stats
->tx_bytes
= tx_bytes
;
351 stats
->rx_packets
= rx_packets
;
353 stats
->multicast
= port
->stats
.multicast
;
354 stats
->rx_errors
= port
->stats
.rx_errors
;
358 static void ehea_update_stats(struct work_struct
*work
)
360 struct ehea_port
*port
=
361 container_of(work
, struct ehea_port
, stats_work
.work
);
362 struct net_device
*dev
= port
->netdev
;
363 struct rtnl_link_stats64
*stats
= &port
->stats
;
364 struct hcp_ehea_port_cb2
*cb2
;
367 cb2
= (void *)get_zeroed_page(GFP_KERNEL
);
369 netdev_err(dev
, "No mem for cb2. Some interface statistics were not updated\n");
373 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
374 port
->logical_port_id
,
375 H_PORT_CB2
, H_PORT_CB2_ALL
, cb2
);
376 if (hret
!= H_SUCCESS
) {
377 netdev_err(dev
, "query_ehea_port failed\n");
381 if (netif_msg_hw(port
))
382 ehea_dump(cb2
, sizeof(*cb2
), "net_device_stats");
384 stats
->multicast
= cb2
->rxmcp
;
385 stats
->rx_errors
= cb2
->rxuerr
;
388 free_page((unsigned long)cb2
);
390 schedule_delayed_work(&port
->stats_work
,
391 round_jiffies_relative(msecs_to_jiffies(1000)));
394 static void ehea_refill_rq1(struct ehea_port_res
*pr
, int index
, int nr_of_wqes
)
396 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
397 struct net_device
*dev
= pr
->port
->netdev
;
398 int max_index_mask
= pr
->rq1_skba
.len
- 1;
399 int fill_wqes
= pr
->rq1_skba
.os_skbs
+ nr_of_wqes
;
403 pr
->rq1_skba
.os_skbs
= 0;
405 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
407 pr
->rq1_skba
.index
= index
;
408 pr
->rq1_skba
.os_skbs
= fill_wqes
;
412 for (i
= 0; i
< fill_wqes
; i
++) {
413 if (!skb_arr_rq1
[index
]) {
414 skb_arr_rq1
[index
] = netdev_alloc_skb(dev
,
416 if (!skb_arr_rq1
[index
]) {
417 pr
->rq1_skba
.os_skbs
= fill_wqes
- i
;
422 index
&= max_index_mask
;
430 ehea_update_rq1a(pr
->qp
, adder
);
433 static void ehea_init_fill_rq1(struct ehea_port_res
*pr
, int nr_rq1a
)
435 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
436 struct net_device
*dev
= pr
->port
->netdev
;
439 if (nr_rq1a
> pr
->rq1_skba
.len
) {
440 netdev_err(dev
, "NR_RQ1A bigger than skb array len\n");
444 for (i
= 0; i
< nr_rq1a
; i
++) {
445 skb_arr_rq1
[i
] = netdev_alloc_skb(dev
, EHEA_L_PKT_SIZE
);
450 ehea_update_rq1a(pr
->qp
, i
- 1);
453 static int ehea_refill_rq_def(struct ehea_port_res
*pr
,
454 struct ehea_q_skb_arr
*q_skba
, int rq_nr
,
455 int num_wqes
, int wqe_type
, int packet_size
)
457 struct net_device
*dev
= pr
->port
->netdev
;
458 struct ehea_qp
*qp
= pr
->qp
;
459 struct sk_buff
**skb_arr
= q_skba
->arr
;
460 struct ehea_rwqe
*rwqe
;
461 int i
, index
, max_index_mask
, fill_wqes
;
465 fill_wqes
= q_skba
->os_skbs
+ num_wqes
;
468 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
469 q_skba
->os_skbs
= fill_wqes
;
473 index
= q_skba
->index
;
474 max_index_mask
= q_skba
->len
- 1;
475 for (i
= 0; i
< fill_wqes
; i
++) {
479 skb
= netdev_alloc_skb_ip_align(dev
, packet_size
);
481 q_skba
->os_skbs
= fill_wqes
- i
;
482 if (q_skba
->os_skbs
== q_skba
->len
- 2) {
483 netdev_info(pr
->port
->netdev
,
484 "rq%i ran dry - no mem for skb\n",
491 skb_arr
[index
] = skb
;
492 tmp_addr
= ehea_map_vaddr(skb
->data
);
493 if (tmp_addr
== -1) {
494 dev_consume_skb_any(skb
);
495 q_skba
->os_skbs
= fill_wqes
- i
;
500 rwqe
= ehea_get_next_rwqe(qp
, rq_nr
);
501 rwqe
->wr_id
= EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, wqe_type
)
502 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX
, index
);
503 rwqe
->sg_list
[0].l_key
= pr
->recv_mr
.lkey
;
504 rwqe
->sg_list
[0].vaddr
= tmp_addr
;
505 rwqe
->sg_list
[0].len
= packet_size
;
506 rwqe
->data_segments
= 1;
509 index
&= max_index_mask
;
513 q_skba
->index
= index
;
520 ehea_update_rq2a(pr
->qp
, adder
);
522 ehea_update_rq3a(pr
->qp
, adder
);
528 static int ehea_refill_rq2(struct ehea_port_res
*pr
, int nr_of_wqes
)
530 return ehea_refill_rq_def(pr
, &pr
->rq2_skba
, 2,
531 nr_of_wqes
, EHEA_RWQE2_TYPE
,
536 static int ehea_refill_rq3(struct ehea_port_res
*pr
, int nr_of_wqes
)
538 return ehea_refill_rq_def(pr
, &pr
->rq3_skba
, 3,
539 nr_of_wqes
, EHEA_RWQE3_TYPE
,
540 EHEA_MAX_PACKET_SIZE
);
543 static inline int ehea_check_cqe(struct ehea_cqe
*cqe
, int *rq_num
)
545 *rq_num
= (cqe
->type
& EHEA_CQE_TYPE_RQ
) >> 5;
546 if ((cqe
->status
& EHEA_CQE_STAT_ERR_MASK
) == 0)
548 if (((cqe
->status
& EHEA_CQE_STAT_ERR_TCP
) != 0) &&
549 (cqe
->header_length
== 0))
554 static inline void ehea_fill_skb(struct net_device
*dev
,
555 struct sk_buff
*skb
, struct ehea_cqe
*cqe
,
556 struct ehea_port_res
*pr
)
558 int length
= cqe
->num_bytes_transfered
- 4; /*remove CRC */
560 skb_put(skb
, length
);
561 skb
->protocol
= eth_type_trans(skb
, dev
);
563 /* The packet was not an IPV4 packet so a complemented checksum was
564 calculated. The value is found in the Internet Checksum field. */
565 if (cqe
->status
& EHEA_CQE_BLIND_CKSUM
) {
566 skb
->ip_summed
= CHECKSUM_COMPLETE
;
567 skb
->csum
= csum_unfold(~cqe
->inet_checksum_value
);
569 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
571 skb_record_rx_queue(skb
, pr
- &pr
->port
->port_res
[0]);
574 static inline struct sk_buff
*get_skb_by_index(struct sk_buff
**skb_array
,
576 struct ehea_cqe
*cqe
)
578 int skb_index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, cqe
->wr_id
);
589 prefetchw(pref
+ EHEA_CACHE_LINE
);
591 pref
= (skb_array
[x
]->data
);
593 prefetch(pref
+ EHEA_CACHE_LINE
);
594 prefetch(pref
+ EHEA_CACHE_LINE
* 2);
595 prefetch(pref
+ EHEA_CACHE_LINE
* 3);
598 skb
= skb_array
[skb_index
];
599 skb_array
[skb_index
] = NULL
;
603 static inline struct sk_buff
*get_skb_by_index_ll(struct sk_buff
**skb_array
,
604 int arr_len
, int wqe_index
)
616 prefetchw(pref
+ EHEA_CACHE_LINE
);
618 pref
= (skb_array
[x
]->data
);
620 prefetchw(pref
+ EHEA_CACHE_LINE
);
623 skb
= skb_array
[wqe_index
];
624 skb_array
[wqe_index
] = NULL
;
628 static int ehea_treat_poll_error(struct ehea_port_res
*pr
, int rq
,
629 struct ehea_cqe
*cqe
, int *processed_rq2
,
634 if (cqe
->status
& EHEA_CQE_STAT_ERR_TCP
)
635 pr
->p_stats
.err_tcp_cksum
++;
636 if (cqe
->status
& EHEA_CQE_STAT_ERR_IP
)
637 pr
->p_stats
.err_ip_cksum
++;
638 if (cqe
->status
& EHEA_CQE_STAT_ERR_CRC
)
639 pr
->p_stats
.err_frame_crc
++;
643 skb
= get_skb_by_index(pr
->rq2_skba
.arr
, pr
->rq2_skba
.len
, cqe
);
645 } else if (rq
== 3) {
647 skb
= get_skb_by_index(pr
->rq3_skba
.arr
, pr
->rq3_skba
.len
, cqe
);
651 if (cqe
->status
& EHEA_CQE_STAT_FAT_ERR_MASK
) {
652 if (netif_msg_rx_err(pr
->port
)) {
653 pr_err("Critical receive error for QP %d. Resetting port.\n",
654 pr
->qp
->init_attr
.qp_nr
);
655 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
657 ehea_schedule_port_reset(pr
->port
);
664 static int ehea_proc_rwqes(struct net_device
*dev
,
665 struct ehea_port_res
*pr
,
668 struct ehea_port
*port
= pr
->port
;
669 struct ehea_qp
*qp
= pr
->qp
;
670 struct ehea_cqe
*cqe
;
672 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
673 struct sk_buff
**skb_arr_rq2
= pr
->rq2_skba
.arr
;
674 struct sk_buff
**skb_arr_rq3
= pr
->rq3_skba
.arr
;
675 int skb_arr_rq1_len
= pr
->rq1_skba
.len
;
676 int skb_arr_rq2_len
= pr
->rq2_skba
.len
;
677 int skb_arr_rq3_len
= pr
->rq3_skba
.len
;
678 int processed
, processed_rq1
, processed_rq2
, processed_rq3
;
679 u64 processed_bytes
= 0;
680 int wqe_index
, last_wqe_index
, rq
, port_reset
;
682 processed
= processed_rq1
= processed_rq2
= processed_rq3
= 0;
685 cqe
= ehea_poll_rq1(qp
, &wqe_index
);
686 while ((processed
< budget
) && cqe
) {
690 if (netif_msg_rx_status(port
))
691 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
693 last_wqe_index
= wqe_index
;
695 if (!ehea_check_cqe(cqe
, &rq
)) {
698 skb
= get_skb_by_index_ll(skb_arr_rq1
,
701 if (unlikely(!skb
)) {
702 netif_info(port
, rx_err
, dev
,
703 "LL rq1: skb=NULL\n");
705 skb
= netdev_alloc_skb(dev
,
710 skb_copy_to_linear_data(skb
, ((char *)cqe
) + 64,
711 cqe
->num_bytes_transfered
- 4);
712 ehea_fill_skb(dev
, skb
, cqe
, pr
);
713 } else if (rq
== 2) {
715 skb
= get_skb_by_index(skb_arr_rq2
,
716 skb_arr_rq2_len
, cqe
);
717 if (unlikely(!skb
)) {
718 netif_err(port
, rx_err
, dev
,
722 ehea_fill_skb(dev
, skb
, cqe
, pr
);
726 skb
= get_skb_by_index(skb_arr_rq3
,
727 skb_arr_rq3_len
, cqe
);
728 if (unlikely(!skb
)) {
729 netif_err(port
, rx_err
, dev
,
733 ehea_fill_skb(dev
, skb
, cqe
, pr
);
737 processed_bytes
+= skb
->len
;
739 if (cqe
->status
& EHEA_CQE_VLAN_TAG_XTRACT
)
740 __vlan_hwaccel_put_tag(skb
, htons(ETH_P_8021Q
),
743 napi_gro_receive(&pr
->napi
, skb
);
745 pr
->p_stats
.poll_receive_errors
++;
746 port_reset
= ehea_treat_poll_error(pr
, rq
, cqe
,
752 cqe
= ehea_poll_rq1(qp
, &wqe_index
);
755 pr
->rx_packets
+= processed
;
756 pr
->rx_bytes
+= processed_bytes
;
758 ehea_refill_rq1(pr
, last_wqe_index
, processed_rq1
);
759 ehea_refill_rq2(pr
, processed_rq2
);
760 ehea_refill_rq3(pr
, processed_rq3
);
765 #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
767 static void reset_sq_restart_flag(struct ehea_port
*port
)
771 for (i
= 0; i
< port
->num_def_qps
; i
++) {
772 struct ehea_port_res
*pr
= &port
->port_res
[i
];
773 pr
->sq_restart_flag
= 0;
775 wake_up(&port
->restart_wq
);
778 static void check_sqs(struct ehea_port
*port
)
780 struct ehea_swqe
*swqe
;
784 for (i
= 0; i
< port
->num_def_qps
; i
++) {
785 struct ehea_port_res
*pr
= &port
->port_res
[i
];
788 swqe
= ehea_get_swqe(pr
->qp
, &swqe_index
);
789 memset(swqe
, 0, SWQE_HEADER_SIZE
);
790 atomic_dec(&pr
->swqe_avail
);
792 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
793 swqe
->wr_id
= SWQE_RESTART_CHECK
;
794 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
795 swqe
->tx_control
|= EHEA_SWQE_IMM_DATA_PRESENT
;
796 swqe
->immediate_data_length
= 80;
798 ehea_post_swqe(pr
->qp
, swqe
);
800 ret
= wait_event_timeout(port
->restart_wq
,
801 pr
->sq_restart_flag
== 0,
802 msecs_to_jiffies(100));
805 pr_err("HW/SW queues out of sync\n");
806 ehea_schedule_port_reset(pr
->port
);
813 static struct ehea_cqe
*ehea_proc_cqes(struct ehea_port_res
*pr
, int my_quota
)
816 struct ehea_cq
*send_cq
= pr
->send_cq
;
817 struct ehea_cqe
*cqe
;
818 int quota
= my_quota
;
822 struct netdev_queue
*txq
= netdev_get_tx_queue(pr
->port
->netdev
,
823 pr
- &pr
->port
->port_res
[0]);
825 cqe
= ehea_poll_cq(send_cq
);
826 while (cqe
&& (quota
> 0)) {
827 ehea_inc_cq(send_cq
);
832 if (cqe
->wr_id
== SWQE_RESTART_CHECK
) {
833 pr
->sq_restart_flag
= 1;
838 if (cqe
->status
& EHEA_CQE_STAT_ERR_MASK
) {
839 pr_err("Bad send completion status=0x%04X\n",
842 if (netif_msg_tx_err(pr
->port
))
843 ehea_dump(cqe
, sizeof(*cqe
), "Send CQE");
845 if (cqe
->status
& EHEA_CQE_STAT_RESET_MASK
) {
846 pr_err("Resetting port\n");
847 ehea_schedule_port_reset(pr
->port
);
852 if (netif_msg_tx_done(pr
->port
))
853 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
855 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE
, cqe
->wr_id
)
856 == EHEA_SWQE2_TYPE
)) {
858 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, cqe
->wr_id
);
859 skb
= pr
->sq_skba
.arr
[index
];
860 dev_consume_skb_any(skb
);
861 pr
->sq_skba
.arr
[index
] = NULL
;
864 swqe_av
+= EHEA_BMASK_GET(EHEA_WR_ID_REFILL
, cqe
->wr_id
);
867 cqe
= ehea_poll_cq(send_cq
);
870 ehea_update_feca(send_cq
, cqe_counter
);
871 atomic_add(swqe_av
, &pr
->swqe_avail
);
873 if (unlikely(netif_tx_queue_stopped(txq
) &&
874 (atomic_read(&pr
->swqe_avail
) >= pr
->swqe_refill_th
))) {
875 __netif_tx_lock(txq
, smp_processor_id());
876 if (netif_tx_queue_stopped(txq
) &&
877 (atomic_read(&pr
->swqe_avail
) >= pr
->swqe_refill_th
))
878 netif_tx_wake_queue(txq
);
879 __netif_tx_unlock(txq
);
882 wake_up(&pr
->port
->swqe_avail_wq
);
887 #define EHEA_POLL_MAX_CQES 65535
889 static int ehea_poll(struct napi_struct
*napi
, int budget
)
891 struct ehea_port_res
*pr
= container_of(napi
, struct ehea_port_res
,
893 struct net_device
*dev
= pr
->port
->netdev
;
894 struct ehea_cqe
*cqe
;
895 struct ehea_cqe
*cqe_skb
= NULL
;
899 cqe_skb
= ehea_proc_cqes(pr
, EHEA_POLL_MAX_CQES
);
900 rx
+= ehea_proc_rwqes(dev
, pr
, budget
- rx
);
902 while (rx
!= budget
) {
904 ehea_reset_cq_ep(pr
->recv_cq
);
905 ehea_reset_cq_ep(pr
->send_cq
);
906 ehea_reset_cq_n1(pr
->recv_cq
);
907 ehea_reset_cq_n1(pr
->send_cq
);
909 cqe
= ehea_poll_rq1(pr
->qp
, &wqe_index
);
910 cqe_skb
= ehea_poll_cq(pr
->send_cq
);
912 if (!cqe
&& !cqe_skb
)
915 if (!napi_reschedule(napi
))
918 cqe_skb
= ehea_proc_cqes(pr
, EHEA_POLL_MAX_CQES
);
919 rx
+= ehea_proc_rwqes(dev
, pr
, budget
- rx
);
925 #ifdef CONFIG_NET_POLL_CONTROLLER
926 static void ehea_netpoll(struct net_device
*dev
)
928 struct ehea_port
*port
= netdev_priv(dev
);
931 for (i
= 0; i
< port
->num_def_qps
; i
++)
932 napi_schedule(&port
->port_res
[i
].napi
);
936 static irqreturn_t
ehea_recv_irq_handler(int irq
, void *param
)
938 struct ehea_port_res
*pr
= param
;
940 napi_schedule(&pr
->napi
);
945 static irqreturn_t
ehea_qp_aff_irq_handler(int irq
, void *param
)
947 struct ehea_port
*port
= param
;
948 struct ehea_eqe
*eqe
;
951 u64 resource_type
, aer
, aerr
;
954 eqe
= ehea_poll_eq(port
->qp_eq
);
957 qp_token
= EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN
, eqe
->entry
);
958 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
959 eqe
->entry
, qp_token
);
961 qp
= port
->port_res
[qp_token
].qp
;
963 resource_type
= ehea_error_data(port
->adapter
, qp
->fw_handle
,
966 if (resource_type
== EHEA_AER_RESTYPE_QP
) {
967 if ((aer
& EHEA_AER_RESET_MASK
) ||
968 (aerr
& EHEA_AERR_RESET_MASK
))
971 reset_port
= 1; /* Reset in case of CQ or EQ error */
973 eqe
= ehea_poll_eq(port
->qp_eq
);
977 pr_err("Resetting port\n");
978 ehea_schedule_port_reset(port
);
984 static struct ehea_port
*ehea_get_port(struct ehea_adapter
*adapter
,
989 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
990 if (adapter
->port
[i
])
991 if (adapter
->port
[i
]->logical_port_id
== logical_port
)
992 return adapter
->port
[i
];
996 int ehea_sense_port_attr(struct ehea_port
*port
)
1000 struct hcp_ehea_port_cb0
*cb0
;
1002 /* may be called via ehea_neq_tasklet() */
1003 cb0
= (void *)get_zeroed_page(GFP_ATOMIC
);
1005 pr_err("no mem for cb0\n");
1010 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
1011 port
->logical_port_id
, H_PORT_CB0
,
1012 EHEA_BMASK_SET(H_PORT_CB0_ALL
, 0xFFFF),
1014 if (hret
!= H_SUCCESS
) {
1020 port
->mac_addr
= cb0
->port_mac_addr
<< 16;
1022 if (!is_valid_ether_addr((u8
*)&port
->mac_addr
)) {
1023 ret
= -EADDRNOTAVAIL
;
1028 switch (cb0
->port_speed
) {
1030 port
->port_speed
= EHEA_SPEED_10M
;
1031 port
->full_duplex
= 0;
1034 port
->port_speed
= EHEA_SPEED_10M
;
1035 port
->full_duplex
= 1;
1037 case H_SPEED_100M_H
:
1038 port
->port_speed
= EHEA_SPEED_100M
;
1039 port
->full_duplex
= 0;
1041 case H_SPEED_100M_F
:
1042 port
->port_speed
= EHEA_SPEED_100M
;
1043 port
->full_duplex
= 1;
1046 port
->port_speed
= EHEA_SPEED_1G
;
1047 port
->full_duplex
= 1;
1050 port
->port_speed
= EHEA_SPEED_10G
;
1051 port
->full_duplex
= 1;
1054 port
->port_speed
= 0;
1055 port
->full_duplex
= 0;
1060 port
->num_mcs
= cb0
->num_default_qps
;
1062 /* Number of default QPs */
1064 port
->num_def_qps
= cb0
->num_default_qps
;
1066 port
->num_def_qps
= 1;
1068 if (!port
->num_def_qps
) {
1075 if (ret
|| netif_msg_probe(port
))
1076 ehea_dump(cb0
, sizeof(*cb0
), "ehea_sense_port_attr");
1077 free_page((unsigned long)cb0
);
1082 int ehea_set_portspeed(struct ehea_port
*port
, u32 port_speed
)
1084 struct hcp_ehea_port_cb4
*cb4
;
1088 cb4
= (void *)get_zeroed_page(GFP_KERNEL
);
1090 pr_err("no mem for cb4\n");
1095 cb4
->port_speed
= port_speed
;
1097 netif_carrier_off(port
->netdev
);
1099 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1100 port
->logical_port_id
,
1101 H_PORT_CB4
, H_PORT_CB4_SPEED
, cb4
);
1102 if (hret
== H_SUCCESS
) {
1103 port
->autoneg
= port_speed
== EHEA_SPEED_AUTONEG
? 1 : 0;
1105 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
1106 port
->logical_port_id
,
1107 H_PORT_CB4
, H_PORT_CB4_SPEED
,
1109 if (hret
== H_SUCCESS
) {
1110 switch (cb4
->port_speed
) {
1112 port
->port_speed
= EHEA_SPEED_10M
;
1113 port
->full_duplex
= 0;
1116 port
->port_speed
= EHEA_SPEED_10M
;
1117 port
->full_duplex
= 1;
1119 case H_SPEED_100M_H
:
1120 port
->port_speed
= EHEA_SPEED_100M
;
1121 port
->full_duplex
= 0;
1123 case H_SPEED_100M_F
:
1124 port
->port_speed
= EHEA_SPEED_100M
;
1125 port
->full_duplex
= 1;
1128 port
->port_speed
= EHEA_SPEED_1G
;
1129 port
->full_duplex
= 1;
1132 port
->port_speed
= EHEA_SPEED_10G
;
1133 port
->full_duplex
= 1;
1136 port
->port_speed
= 0;
1137 port
->full_duplex
= 0;
1141 pr_err("Failed sensing port speed\n");
1145 if (hret
== H_AUTHORITY
) {
1146 pr_info("Hypervisor denied setting port speed\n");
1150 pr_err("Failed setting port speed\n");
1153 if (!prop_carrier_state
|| (port
->phy_link
== EHEA_PHY_LINK_UP
))
1154 netif_carrier_on(port
->netdev
);
1156 free_page((unsigned long)cb4
);
1161 static void ehea_parse_eqe(struct ehea_adapter
*adapter
, u64 eqe
)
1166 struct ehea_port
*port
;
1167 struct net_device
*dev
;
1169 ec
= EHEA_BMASK_GET(NEQE_EVENT_CODE
, eqe
);
1170 portnum
= EHEA_BMASK_GET(NEQE_PORTNUM
, eqe
);
1171 port
= ehea_get_port(adapter
, portnum
);
1173 netdev_err(NULL
, "unknown portnum %x\n", portnum
);
1179 case EHEA_EC_PORTSTATE_CHG
: /* port state change */
1181 if (EHEA_BMASK_GET(NEQE_PORT_UP
, eqe
)) {
1182 if (!netif_carrier_ok(dev
)) {
1183 ret
= ehea_sense_port_attr(port
);
1185 netdev_err(dev
, "failed resensing port attributes\n");
1189 netif_info(port
, link
, dev
,
1190 "Logical port up: %dMbps %s Duplex\n",
1192 port
->full_duplex
== 1 ?
1195 netif_carrier_on(dev
);
1196 netif_wake_queue(dev
);
1199 if (netif_carrier_ok(dev
)) {
1200 netif_info(port
, link
, dev
,
1201 "Logical port down\n");
1202 netif_carrier_off(dev
);
1203 netif_tx_disable(dev
);
1206 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP
, eqe
)) {
1207 port
->phy_link
= EHEA_PHY_LINK_UP
;
1208 netif_info(port
, link
, dev
,
1209 "Physical port up\n");
1210 if (prop_carrier_state
)
1211 netif_carrier_on(dev
);
1213 port
->phy_link
= EHEA_PHY_LINK_DOWN
;
1214 netif_info(port
, link
, dev
,
1215 "Physical port down\n");
1216 if (prop_carrier_state
)
1217 netif_carrier_off(dev
);
1220 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY
, eqe
))
1222 "External switch port is primary port\n");
1225 "External switch port is backup port\n");
1228 case EHEA_EC_ADAPTER_MALFUNC
:
1229 netdev_err(dev
, "Adapter malfunction\n");
1231 case EHEA_EC_PORT_MALFUNC
:
1232 netdev_info(dev
, "Port malfunction\n");
1233 netif_carrier_off(dev
);
1234 netif_tx_disable(dev
);
1237 netdev_err(dev
, "unknown event code %x, eqe=0x%llX\n", ec
, eqe
);
1242 static void ehea_neq_tasklet(unsigned long data
)
1244 struct ehea_adapter
*adapter
= (struct ehea_adapter
*)data
;
1245 struct ehea_eqe
*eqe
;
1248 eqe
= ehea_poll_eq(adapter
->neq
);
1249 pr_debug("eqe=%p\n", eqe
);
1252 pr_debug("*eqe=%lx\n", (unsigned long) eqe
->entry
);
1253 ehea_parse_eqe(adapter
, eqe
->entry
);
1254 eqe
= ehea_poll_eq(adapter
->neq
);
1255 pr_debug("next eqe=%p\n", eqe
);
1258 event_mask
= EHEA_BMASK_SET(NELR_PORTSTATE_CHG
, 1)
1259 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC
, 1)
1260 | EHEA_BMASK_SET(NELR_PORT_MALFUNC
, 1);
1262 ehea_h_reset_events(adapter
->handle
,
1263 adapter
->neq
->fw_handle
, event_mask
);
1266 static irqreturn_t
ehea_interrupt_neq(int irq
, void *param
)
1268 struct ehea_adapter
*adapter
= param
;
1269 tasklet_hi_schedule(&adapter
->neq_tasklet
);
1274 static int ehea_fill_port_res(struct ehea_port_res
*pr
)
1277 struct ehea_qp_init_attr
*init_attr
= &pr
->qp
->init_attr
;
1279 ehea_init_fill_rq1(pr
, pr
->rq1_skba
.len
);
1281 ret
= ehea_refill_rq2(pr
, init_attr
->act_nr_rwqes_rq2
- 1);
1283 ret
|= ehea_refill_rq3(pr
, init_attr
->act_nr_rwqes_rq3
- 1);
1288 static int ehea_reg_interrupts(struct net_device
*dev
)
1290 struct ehea_port
*port
= netdev_priv(dev
);
1291 struct ehea_port_res
*pr
;
1295 snprintf(port
->int_aff_name
, EHEA_IRQ_NAME_SIZE
- 1, "%s-aff",
1298 ret
= ibmebus_request_irq(port
->qp_eq
->attr
.ist1
,
1299 ehea_qp_aff_irq_handler
,
1300 0, port
->int_aff_name
, port
);
1302 netdev_err(dev
, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1303 port
->qp_eq
->attr
.ist1
);
1307 netif_info(port
, ifup
, dev
,
1308 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1309 port
->qp_eq
->attr
.ist1
);
1312 for (i
= 0; i
< port
->num_def_qps
; i
++) {
1313 pr
= &port
->port_res
[i
];
1314 snprintf(pr
->int_send_name
, EHEA_IRQ_NAME_SIZE
- 1,
1315 "%s-queue%d", dev
->name
, i
);
1316 ret
= ibmebus_request_irq(pr
->eq
->attr
.ist1
,
1317 ehea_recv_irq_handler
,
1318 0, pr
->int_send_name
, pr
);
1320 netdev_err(dev
, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1321 i
, pr
->eq
->attr
.ist1
);
1324 netif_info(port
, ifup
, dev
,
1325 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1326 pr
->eq
->attr
.ist1
, i
);
1334 u32 ist
= port
->port_res
[i
].eq
->attr
.ist1
;
1335 ibmebus_free_irq(ist
, &port
->port_res
[i
]);
1339 ibmebus_free_irq(port
->qp_eq
->attr
.ist1
, port
);
1340 i
= port
->num_def_qps
;
1346 static void ehea_free_interrupts(struct net_device
*dev
)
1348 struct ehea_port
*port
= netdev_priv(dev
);
1349 struct ehea_port_res
*pr
;
1354 for (i
= 0; i
< port
->num_def_qps
; i
++) {
1355 pr
= &port
->port_res
[i
];
1356 ibmebus_free_irq(pr
->eq
->attr
.ist1
, pr
);
1357 netif_info(port
, intr
, dev
,
1358 "free send irq for res %d with handle 0x%X\n",
1359 i
, pr
->eq
->attr
.ist1
);
1362 /* associated events */
1363 ibmebus_free_irq(port
->qp_eq
->attr
.ist1
, port
);
1364 netif_info(port
, intr
, dev
,
1365 "associated event interrupt for handle 0x%X freed\n",
1366 port
->qp_eq
->attr
.ist1
);
1369 static int ehea_configure_port(struct ehea_port
*port
)
1373 struct hcp_ehea_port_cb0
*cb0
;
1376 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
1380 cb0
->port_rc
= EHEA_BMASK_SET(PXLY_RC_VALID
, 1)
1381 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM
, 1)
1382 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM
, 1)
1383 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT
, 1)
1384 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER
,
1385 PXLY_RC_VLAN_FILTER
)
1386 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME
, 1);
1388 for (i
= 0; i
< port
->num_mcs
; i
++)
1390 cb0
->default_qpn_arr
[i
] =
1391 port
->port_res
[i
].qp
->init_attr
.qp_nr
;
1393 cb0
->default_qpn_arr
[i
] =
1394 port
->port_res
[0].qp
->init_attr
.qp_nr
;
1396 if (netif_msg_ifup(port
))
1397 ehea_dump(cb0
, sizeof(*cb0
), "ehea_configure_port");
1399 mask
= EHEA_BMASK_SET(H_PORT_CB0_PRC
, 1)
1400 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY
, 1);
1402 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1403 port
->logical_port_id
,
1404 H_PORT_CB0
, mask
, cb0
);
1406 if (hret
!= H_SUCCESS
)
1412 free_page((unsigned long)cb0
);
1417 static int ehea_gen_smrs(struct ehea_port_res
*pr
)
1420 struct ehea_adapter
*adapter
= pr
->port
->adapter
;
1422 ret
= ehea_gen_smr(adapter
, &adapter
->mr
, &pr
->send_mr
);
1426 ret
= ehea_gen_smr(adapter
, &adapter
->mr
, &pr
->recv_mr
);
1433 ehea_rem_mr(&pr
->send_mr
);
1435 pr_err("Generating SMRS failed\n");
1439 static int ehea_rem_smrs(struct ehea_port_res
*pr
)
1441 if ((ehea_rem_mr(&pr
->send_mr
)) ||
1442 (ehea_rem_mr(&pr
->recv_mr
)))
1448 static int ehea_init_q_skba(struct ehea_q_skb_arr
*q_skba
, int max_q_entries
)
1450 int arr_size
= sizeof(void *) * max_q_entries
;
1452 q_skba
->arr
= vzalloc(arr_size
);
1456 q_skba
->len
= max_q_entries
;
1458 q_skba
->os_skbs
= 0;
1463 static int ehea_init_port_res(struct ehea_port
*port
, struct ehea_port_res
*pr
,
1464 struct port_res_cfg
*pr_cfg
, int queue_token
)
1466 struct ehea_adapter
*adapter
= port
->adapter
;
1467 enum ehea_eq_type eq_type
= EHEA_EQ
;
1468 struct ehea_qp_init_attr
*init_attr
= NULL
;
1470 u64 tx_bytes
, rx_bytes
, tx_packets
, rx_packets
;
1472 tx_bytes
= pr
->tx_bytes
;
1473 tx_packets
= pr
->tx_packets
;
1474 rx_bytes
= pr
->rx_bytes
;
1475 rx_packets
= pr
->rx_packets
;
1477 memset(pr
, 0, sizeof(struct ehea_port_res
));
1479 pr
->tx_bytes
= rx_bytes
;
1480 pr
->tx_packets
= tx_packets
;
1481 pr
->rx_bytes
= rx_bytes
;
1482 pr
->rx_packets
= rx_packets
;
1486 pr
->eq
= ehea_create_eq(adapter
, eq_type
, EHEA_MAX_ENTRIES_EQ
, 0);
1488 pr_err("create_eq failed (eq)\n");
1492 pr
->recv_cq
= ehea_create_cq(adapter
, pr_cfg
->max_entries_rcq
,
1494 port
->logical_port_id
);
1496 pr_err("create_cq failed (cq_recv)\n");
1500 pr
->send_cq
= ehea_create_cq(adapter
, pr_cfg
->max_entries_scq
,
1502 port
->logical_port_id
);
1504 pr_err("create_cq failed (cq_send)\n");
1508 if (netif_msg_ifup(port
))
1509 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1510 pr
->send_cq
->attr
.act_nr_of_cqes
,
1511 pr
->recv_cq
->attr
.act_nr_of_cqes
);
1513 init_attr
= kzalloc(sizeof(*init_attr
), GFP_KERNEL
);
1516 pr_err("no mem for ehea_qp_init_attr\n");
1520 init_attr
->low_lat_rq1
= 1;
1521 init_attr
->signalingtype
= 1; /* generate CQE if specified in WQE */
1522 init_attr
->rq_count
= 3;
1523 init_attr
->qp_token
= queue_token
;
1524 init_attr
->max_nr_send_wqes
= pr_cfg
->max_entries_sq
;
1525 init_attr
->max_nr_rwqes_rq1
= pr_cfg
->max_entries_rq1
;
1526 init_attr
->max_nr_rwqes_rq2
= pr_cfg
->max_entries_rq2
;
1527 init_attr
->max_nr_rwqes_rq3
= pr_cfg
->max_entries_rq3
;
1528 init_attr
->wqe_size_enc_sq
= EHEA_SG_SQ
;
1529 init_attr
->wqe_size_enc_rq1
= EHEA_SG_RQ1
;
1530 init_attr
->wqe_size_enc_rq2
= EHEA_SG_RQ2
;
1531 init_attr
->wqe_size_enc_rq3
= EHEA_SG_RQ3
;
1532 init_attr
->rq2_threshold
= EHEA_RQ2_THRESHOLD
;
1533 init_attr
->rq3_threshold
= EHEA_RQ3_THRESHOLD
;
1534 init_attr
->port_nr
= port
->logical_port_id
;
1535 init_attr
->send_cq_handle
= pr
->send_cq
->fw_handle
;
1536 init_attr
->recv_cq_handle
= pr
->recv_cq
->fw_handle
;
1537 init_attr
->aff_eq_handle
= port
->qp_eq
->fw_handle
;
1539 pr
->qp
= ehea_create_qp(adapter
, adapter
->pd
, init_attr
);
1541 pr_err("create_qp failed\n");
1546 if (netif_msg_ifup(port
))
1547 pr_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d\n",
1549 init_attr
->act_nr_send_wqes
,
1550 init_attr
->act_nr_rwqes_rq1
,
1551 init_attr
->act_nr_rwqes_rq2
,
1552 init_attr
->act_nr_rwqes_rq3
);
1554 pr
->sq_skba_size
= init_attr
->act_nr_send_wqes
+ 1;
1556 ret
= ehea_init_q_skba(&pr
->sq_skba
, pr
->sq_skba_size
);
1557 ret
|= ehea_init_q_skba(&pr
->rq1_skba
, init_attr
->act_nr_rwqes_rq1
+ 1);
1558 ret
|= ehea_init_q_skba(&pr
->rq2_skba
, init_attr
->act_nr_rwqes_rq2
+ 1);
1559 ret
|= ehea_init_q_skba(&pr
->rq3_skba
, init_attr
->act_nr_rwqes_rq3
+ 1);
1563 pr
->swqe_refill_th
= init_attr
->act_nr_send_wqes
/ 10;
1564 if (ehea_gen_smrs(pr
) != 0) {
1569 atomic_set(&pr
->swqe_avail
, init_attr
->act_nr_send_wqes
- 1);
1573 netif_napi_add(pr
->port
->netdev
, &pr
->napi
, ehea_poll
, 64);
1580 vfree(pr
->sq_skba
.arr
);
1581 vfree(pr
->rq1_skba
.arr
);
1582 vfree(pr
->rq2_skba
.arr
);
1583 vfree(pr
->rq3_skba
.arr
);
1584 ehea_destroy_qp(pr
->qp
);
1585 ehea_destroy_cq(pr
->send_cq
);
1586 ehea_destroy_cq(pr
->recv_cq
);
1587 ehea_destroy_eq(pr
->eq
);
1592 static int ehea_clean_portres(struct ehea_port
*port
, struct ehea_port_res
*pr
)
1597 netif_napi_del(&pr
->napi
);
1599 ret
= ehea_destroy_qp(pr
->qp
);
1602 ehea_destroy_cq(pr
->send_cq
);
1603 ehea_destroy_cq(pr
->recv_cq
);
1604 ehea_destroy_eq(pr
->eq
);
1606 for (i
= 0; i
< pr
->rq1_skba
.len
; i
++)
1607 if (pr
->rq1_skba
.arr
[i
])
1608 dev_kfree_skb(pr
->rq1_skba
.arr
[i
]);
1610 for (i
= 0; i
< pr
->rq2_skba
.len
; i
++)
1611 if (pr
->rq2_skba
.arr
[i
])
1612 dev_kfree_skb(pr
->rq2_skba
.arr
[i
]);
1614 for (i
= 0; i
< pr
->rq3_skba
.len
; i
++)
1615 if (pr
->rq3_skba
.arr
[i
])
1616 dev_kfree_skb(pr
->rq3_skba
.arr
[i
]);
1618 for (i
= 0; i
< pr
->sq_skba
.len
; i
++)
1619 if (pr
->sq_skba
.arr
[i
])
1620 dev_kfree_skb(pr
->sq_skba
.arr
[i
]);
1622 vfree(pr
->rq1_skba
.arr
);
1623 vfree(pr
->rq2_skba
.arr
);
1624 vfree(pr
->rq3_skba
.arr
);
1625 vfree(pr
->sq_skba
.arr
);
1626 ret
= ehea_rem_smrs(pr
);
1631 static void write_swqe2_immediate(struct sk_buff
*skb
, struct ehea_swqe
*swqe
,
1634 int skb_data_size
= skb_headlen(skb
);
1635 u8
*imm_data
= &swqe
->u
.immdata_desc
.immediate_data
[0];
1636 struct ehea_vsgentry
*sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1637 unsigned int immediate_len
= SWQE2_MAX_IMM
;
1639 swqe
->descriptors
= 0;
1641 if (skb_is_gso(skb
)) {
1642 swqe
->tx_control
|= EHEA_SWQE_TSO
;
1643 swqe
->mss
= skb_shinfo(skb
)->gso_size
;
1645 * For TSO packets we only copy the headers into the
1648 immediate_len
= ETH_HLEN
+ ip_hdrlen(skb
) + tcp_hdrlen(skb
);
1651 if (skb_is_gso(skb
) || skb_data_size
>= SWQE2_MAX_IMM
) {
1652 skb_copy_from_linear_data(skb
, imm_data
, immediate_len
);
1653 swqe
->immediate_data_length
= immediate_len
;
1655 if (skb_data_size
> immediate_len
) {
1656 sg1entry
->l_key
= lkey
;
1657 sg1entry
->len
= skb_data_size
- immediate_len
;
1659 ehea_map_vaddr(skb
->data
+ immediate_len
);
1660 swqe
->descriptors
++;
1663 skb_copy_from_linear_data(skb
, imm_data
, skb_data_size
);
1664 swqe
->immediate_data_length
= skb_data_size
;
1668 static inline void write_swqe2_data(struct sk_buff
*skb
, struct net_device
*dev
,
1669 struct ehea_swqe
*swqe
, u32 lkey
)
1671 struct ehea_vsgentry
*sg_list
, *sg1entry
, *sgentry
;
1673 int nfrags
, sg1entry_contains_frag_data
, i
;
1675 nfrags
= skb_shinfo(skb
)->nr_frags
;
1676 sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1677 sg_list
= (struct ehea_vsgentry
*)&swqe
->u
.immdata_desc
.sg_list
;
1678 sg1entry_contains_frag_data
= 0;
1680 write_swqe2_immediate(skb
, swqe
, lkey
);
1682 /* write descriptors */
1684 if (swqe
->descriptors
== 0) {
1685 /* sg1entry not yet used */
1686 frag
= &skb_shinfo(skb
)->frags
[0];
1688 /* copy sg1entry data */
1689 sg1entry
->l_key
= lkey
;
1690 sg1entry
->len
= skb_frag_size(frag
);
1692 ehea_map_vaddr(skb_frag_address(frag
));
1693 swqe
->descriptors
++;
1694 sg1entry_contains_frag_data
= 1;
1697 for (i
= sg1entry_contains_frag_data
; i
< nfrags
; i
++) {
1699 frag
= &skb_shinfo(skb
)->frags
[i
];
1700 sgentry
= &sg_list
[i
- sg1entry_contains_frag_data
];
1702 sgentry
->l_key
= lkey
;
1703 sgentry
->len
= skb_frag_size(frag
);
1704 sgentry
->vaddr
= ehea_map_vaddr(skb_frag_address(frag
));
1705 swqe
->descriptors
++;
1710 static int ehea_broadcast_reg_helper(struct ehea_port
*port
, u32 hcallid
)
1716 /* De/Register untagged packets */
1717 reg_type
= EHEA_BCMC_BROADCAST
| EHEA_BCMC_UNTAGGED
;
1718 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1719 port
->logical_port_id
,
1720 reg_type
, port
->mac_addr
, 0, hcallid
);
1721 if (hret
!= H_SUCCESS
) {
1722 pr_err("%sregistering bc address failed (tagged)\n",
1723 hcallid
== H_REG_BCMC
? "" : "de");
1728 /* De/Register VLAN packets */
1729 reg_type
= EHEA_BCMC_BROADCAST
| EHEA_BCMC_VLANID_ALL
;
1730 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1731 port
->logical_port_id
,
1732 reg_type
, port
->mac_addr
, 0, hcallid
);
1733 if (hret
!= H_SUCCESS
) {
1734 pr_err("%sregistering bc address failed (vlan)\n",
1735 hcallid
== H_REG_BCMC
? "" : "de");
1742 static int ehea_set_mac_addr(struct net_device
*dev
, void *sa
)
1744 struct ehea_port
*port
= netdev_priv(dev
);
1745 struct sockaddr
*mac_addr
= sa
;
1746 struct hcp_ehea_port_cb0
*cb0
;
1750 if (!is_valid_ether_addr(mac_addr
->sa_data
)) {
1751 ret
= -EADDRNOTAVAIL
;
1755 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
1757 pr_err("no mem for cb0\n");
1762 memcpy(&(cb0
->port_mac_addr
), &(mac_addr
->sa_data
[0]), ETH_ALEN
);
1764 cb0
->port_mac_addr
= cb0
->port_mac_addr
>> 16;
1766 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1767 port
->logical_port_id
, H_PORT_CB0
,
1768 EHEA_BMASK_SET(H_PORT_CB0_MAC
, 1), cb0
);
1769 if (hret
!= H_SUCCESS
) {
1774 memcpy(dev
->dev_addr
, mac_addr
->sa_data
, dev
->addr_len
);
1776 /* Deregister old MAC in pHYP */
1777 if (port
->state
== EHEA_PORT_UP
) {
1778 ret
= ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
1783 port
->mac_addr
= cb0
->port_mac_addr
<< 16;
1785 /* Register new MAC in pHYP */
1786 if (port
->state
== EHEA_PORT_UP
) {
1787 ret
= ehea_broadcast_reg_helper(port
, H_REG_BCMC
);
1795 ehea_update_bcmc_registrations();
1797 free_page((unsigned long)cb0
);
1802 static void ehea_promiscuous_error(u64 hret
, int enable
)
1804 if (hret
== H_AUTHORITY
)
1805 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1806 enable
== 1 ? "en" : "dis");
1808 pr_err("failed %sabling promiscuous mode\n",
1809 enable
== 1 ? "en" : "dis");
1812 static void ehea_promiscuous(struct net_device
*dev
, int enable
)
1814 struct ehea_port
*port
= netdev_priv(dev
);
1815 struct hcp_ehea_port_cb7
*cb7
;
1818 if (enable
== port
->promisc
)
1821 cb7
= (void *)get_zeroed_page(GFP_ATOMIC
);
1823 pr_err("no mem for cb7\n");
1827 /* Modify Pxs_DUCQPN in CB7 */
1828 cb7
->def_uc_qpn
= enable
== 1 ? port
->port_res
[0].qp
->fw_handle
: 0;
1830 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1831 port
->logical_port_id
,
1832 H_PORT_CB7
, H_PORT_CB7_DUCQPN
, cb7
);
1834 ehea_promiscuous_error(hret
, enable
);
1838 port
->promisc
= enable
;
1840 free_page((unsigned long)cb7
);
1843 static u64
ehea_multicast_reg_helper(struct ehea_port
*port
, u64 mc_mac_addr
,
1849 reg_type
= EHEA_BCMC_MULTICAST
| EHEA_BCMC_UNTAGGED
;
1850 if (mc_mac_addr
== 0)
1851 reg_type
|= EHEA_BCMC_SCOPE_ALL
;
1853 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1854 port
->logical_port_id
,
1855 reg_type
, mc_mac_addr
, 0, hcallid
);
1859 reg_type
= EHEA_BCMC_MULTICAST
| EHEA_BCMC_VLANID_ALL
;
1860 if (mc_mac_addr
== 0)
1861 reg_type
|= EHEA_BCMC_SCOPE_ALL
;
1863 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1864 port
->logical_port_id
,
1865 reg_type
, mc_mac_addr
, 0, hcallid
);
1870 static int ehea_drop_multicast_list(struct net_device
*dev
)
1872 struct ehea_port
*port
= netdev_priv(dev
);
1873 struct ehea_mc_list
*mc_entry
= port
->mc_list
;
1874 struct list_head
*pos
;
1875 struct list_head
*temp
;
1879 list_for_each_safe(pos
, temp
, &(port
->mc_list
->list
)) {
1880 mc_entry
= list_entry(pos
, struct ehea_mc_list
, list
);
1882 hret
= ehea_multicast_reg_helper(port
, mc_entry
->macaddr
,
1885 pr_err("failed deregistering mcast MAC\n");
1895 static void ehea_allmulti(struct net_device
*dev
, int enable
)
1897 struct ehea_port
*port
= netdev_priv(dev
);
1900 if (!port
->allmulti
) {
1902 /* Enable ALLMULTI */
1903 ehea_drop_multicast_list(dev
);
1904 hret
= ehea_multicast_reg_helper(port
, 0, H_REG_BCMC
);
1909 "failed enabling IFF_ALLMULTI\n");
1913 /* Disable ALLMULTI */
1914 hret
= ehea_multicast_reg_helper(port
, 0, H_DEREG_BCMC
);
1919 "failed disabling IFF_ALLMULTI\n");
1924 static void ehea_add_multicast_entry(struct ehea_port
*port
, u8
*mc_mac_addr
)
1926 struct ehea_mc_list
*ehea_mcl_entry
;
1929 ehea_mcl_entry
= kzalloc(sizeof(*ehea_mcl_entry
), GFP_ATOMIC
);
1930 if (!ehea_mcl_entry
)
1933 INIT_LIST_HEAD(&ehea_mcl_entry
->list
);
1935 memcpy(&ehea_mcl_entry
->macaddr
, mc_mac_addr
, ETH_ALEN
);
1937 hret
= ehea_multicast_reg_helper(port
, ehea_mcl_entry
->macaddr
,
1940 list_add(&ehea_mcl_entry
->list
, &port
->mc_list
->list
);
1942 pr_err("failed registering mcast MAC\n");
1943 kfree(ehea_mcl_entry
);
1947 static void ehea_set_multicast_list(struct net_device
*dev
)
1949 struct ehea_port
*port
= netdev_priv(dev
);
1950 struct netdev_hw_addr
*ha
;
1953 ehea_promiscuous(dev
, !!(dev
->flags
& IFF_PROMISC
));
1955 if (dev
->flags
& IFF_ALLMULTI
) {
1956 ehea_allmulti(dev
, 1);
1959 ehea_allmulti(dev
, 0);
1961 if (!netdev_mc_empty(dev
)) {
1962 ret
= ehea_drop_multicast_list(dev
);
1964 /* Dropping the current multicast list failed.
1965 * Enabling ALL_MULTI is the best we can do.
1967 ehea_allmulti(dev
, 1);
1970 if (netdev_mc_count(dev
) > port
->adapter
->max_mc_mac
) {
1971 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
1972 port
->adapter
->max_mc_mac
);
1976 netdev_for_each_mc_addr(ha
, dev
)
1977 ehea_add_multicast_entry(port
, ha
->addr
);
1981 ehea_update_bcmc_registrations();
1984 static void xmit_common(struct sk_buff
*skb
, struct ehea_swqe
*swqe
)
1986 swqe
->tx_control
|= EHEA_SWQE_IMM_DATA_PRESENT
| EHEA_SWQE_CRC
;
1988 if (vlan_get_protocol(skb
) != htons(ETH_P_IP
))
1991 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
1992 swqe
->tx_control
|= EHEA_SWQE_IP_CHECKSUM
;
1994 swqe
->ip_start
= skb_network_offset(skb
);
1995 swqe
->ip_end
= swqe
->ip_start
+ ip_hdrlen(skb
) - 1;
1997 switch (ip_hdr(skb
)->protocol
) {
1999 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
2000 swqe
->tx_control
|= EHEA_SWQE_TCP_CHECKSUM
;
2002 swqe
->tcp_offset
= swqe
->ip_end
+ 1 +
2003 offsetof(struct udphdr
, check
);
2007 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
2008 swqe
->tx_control
|= EHEA_SWQE_TCP_CHECKSUM
;
2010 swqe
->tcp_offset
= swqe
->ip_end
+ 1 +
2011 offsetof(struct tcphdr
, check
);
2016 static void ehea_xmit2(struct sk_buff
*skb
, struct net_device
*dev
,
2017 struct ehea_swqe
*swqe
, u32 lkey
)
2019 swqe
->tx_control
|= EHEA_SWQE_DESCRIPTORS_PRESENT
;
2021 xmit_common(skb
, swqe
);
2023 write_swqe2_data(skb
, dev
, swqe
, lkey
);
2026 static void ehea_xmit3(struct sk_buff
*skb
, struct net_device
*dev
,
2027 struct ehea_swqe
*swqe
)
2029 u8
*imm_data
= &swqe
->u
.immdata_nodesc
.immediate_data
[0];
2031 xmit_common(skb
, swqe
);
2034 skb_copy_from_linear_data(skb
, imm_data
, skb
->len
);
2036 skb_copy_bits(skb
, 0, imm_data
, skb
->len
);
2038 swqe
->immediate_data_length
= skb
->len
;
2039 dev_consume_skb_any(skb
);
2042 static int ehea_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
2044 struct ehea_port
*port
= netdev_priv(dev
);
2045 struct ehea_swqe
*swqe
;
2048 struct ehea_port_res
*pr
;
2049 struct netdev_queue
*txq
;
2051 pr
= &port
->port_res
[skb_get_queue_mapping(skb
)];
2052 txq
= netdev_get_tx_queue(dev
, skb_get_queue_mapping(skb
));
2054 swqe
= ehea_get_swqe(pr
->qp
, &swqe_index
);
2055 memset(swqe
, 0, SWQE_HEADER_SIZE
);
2056 atomic_dec(&pr
->swqe_avail
);
2058 if (skb_vlan_tag_present(skb
)) {
2059 swqe
->tx_control
|= EHEA_SWQE_VLAN_INSERT
;
2060 swqe
->vlan_tag
= skb_vlan_tag_get(skb
);
2064 pr
->tx_bytes
+= skb
->len
;
2066 if (skb
->len
<= SWQE3_MAX_IMM
) {
2067 u32 sig_iv
= port
->sig_comp_iv
;
2068 u32 swqe_num
= pr
->swqe_id_counter
;
2069 ehea_xmit3(skb
, dev
, swqe
);
2070 swqe
->wr_id
= EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, EHEA_SWQE3_TYPE
)
2071 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT
, swqe_num
);
2072 if (pr
->swqe_ll_count
>= (sig_iv
- 1)) {
2073 swqe
->wr_id
|= EHEA_BMASK_SET(EHEA_WR_ID_REFILL
,
2075 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
2076 pr
->swqe_ll_count
= 0;
2078 pr
->swqe_ll_count
+= 1;
2081 EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, EHEA_SWQE2_TYPE
)
2082 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT
, pr
->swqe_id_counter
)
2083 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL
, 1)
2084 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX
, pr
->sq_skba
.index
);
2085 pr
->sq_skba
.arr
[pr
->sq_skba
.index
] = skb
;
2087 pr
->sq_skba
.index
++;
2088 pr
->sq_skba
.index
&= (pr
->sq_skba
.len
- 1);
2090 lkey
= pr
->send_mr
.lkey
;
2091 ehea_xmit2(skb
, dev
, swqe
, lkey
);
2092 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
2094 pr
->swqe_id_counter
+= 1;
2096 netif_info(port
, tx_queued
, dev
,
2097 "post swqe on QP %d\n", pr
->qp
->init_attr
.qp_nr
);
2098 if (netif_msg_tx_queued(port
))
2099 ehea_dump(swqe
, 512, "swqe");
2101 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
2102 netif_tx_stop_queue(txq
);
2103 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
2106 ehea_post_swqe(pr
->qp
, swqe
);
2108 if (unlikely(atomic_read(&pr
->swqe_avail
) <= 1)) {
2109 pr
->p_stats
.queue_stopped
++;
2110 netif_tx_stop_queue(txq
);
2113 return NETDEV_TX_OK
;
2116 static int ehea_vlan_rx_add_vid(struct net_device
*dev
, __be16 proto
, u16 vid
)
2118 struct ehea_port
*port
= netdev_priv(dev
);
2119 struct ehea_adapter
*adapter
= port
->adapter
;
2120 struct hcp_ehea_port_cb1
*cb1
;
2125 cb1
= (void *)get_zeroed_page(GFP_KERNEL
);
2127 pr_err("no mem for cb1\n");
2132 hret
= ehea_h_query_ehea_port(adapter
->handle
, port
->logical_port_id
,
2133 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2134 if (hret
!= H_SUCCESS
) {
2135 pr_err("query_ehea_port failed\n");
2141 cb1
->vlan_filter
[index
] |= ((u64
)(0x8000000000000000 >> (vid
& 0x3F)));
2143 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2144 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2145 if (hret
!= H_SUCCESS
) {
2146 pr_err("modify_ehea_port failed\n");
2150 free_page((unsigned long)cb1
);
2154 static int ehea_vlan_rx_kill_vid(struct net_device
*dev
, __be16 proto
, u16 vid
)
2156 struct ehea_port
*port
= netdev_priv(dev
);
2157 struct ehea_adapter
*adapter
= port
->adapter
;
2158 struct hcp_ehea_port_cb1
*cb1
;
2163 cb1
= (void *)get_zeroed_page(GFP_KERNEL
);
2165 pr_err("no mem for cb1\n");
2170 hret
= ehea_h_query_ehea_port(adapter
->handle
, port
->logical_port_id
,
2171 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2172 if (hret
!= H_SUCCESS
) {
2173 pr_err("query_ehea_port failed\n");
2179 cb1
->vlan_filter
[index
] &= ~((u64
)(0x8000000000000000 >> (vid
& 0x3F)));
2181 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2182 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2183 if (hret
!= H_SUCCESS
) {
2184 pr_err("modify_ehea_port failed\n");
2188 free_page((unsigned long)cb1
);
2192 static int ehea_activate_qp(struct ehea_adapter
*adapter
, struct ehea_qp
*qp
)
2198 struct hcp_modify_qp_cb0
*cb0
;
2200 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
2206 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2207 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2208 if (hret
!= H_SUCCESS
) {
2209 pr_err("query_ehea_qp failed (1)\n");
2213 cb0
->qp_ctl_reg
= H_QP_CR_STATE_INITIALIZED
;
2214 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2215 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2216 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2217 if (hret
!= H_SUCCESS
) {
2218 pr_err("modify_ehea_qp failed (1)\n");
2222 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2223 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2224 if (hret
!= H_SUCCESS
) {
2225 pr_err("query_ehea_qp failed (2)\n");
2229 cb0
->qp_ctl_reg
= H_QP_CR_ENABLED
| H_QP_CR_STATE_INITIALIZED
;
2230 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2231 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2232 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2233 if (hret
!= H_SUCCESS
) {
2234 pr_err("modify_ehea_qp failed (2)\n");
2238 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2239 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2240 if (hret
!= H_SUCCESS
) {
2241 pr_err("query_ehea_qp failed (3)\n");
2245 cb0
->qp_ctl_reg
= H_QP_CR_ENABLED
| H_QP_CR_STATE_RDY2SND
;
2246 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2247 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2248 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2249 if (hret
!= H_SUCCESS
) {
2250 pr_err("modify_ehea_qp failed (3)\n");
2254 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2255 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2256 if (hret
!= H_SUCCESS
) {
2257 pr_err("query_ehea_qp failed (4)\n");
2263 free_page((unsigned long)cb0
);
2267 static int ehea_port_res_setup(struct ehea_port
*port
, int def_qps
)
2270 struct port_res_cfg pr_cfg
, pr_cfg_small_rx
;
2271 enum ehea_eq_type eq_type
= EHEA_EQ
;
2273 port
->qp_eq
= ehea_create_eq(port
->adapter
, eq_type
,
2274 EHEA_MAX_ENTRIES_EQ
, 1);
2277 pr_err("ehea_create_eq failed (qp_eq)\n");
2281 pr_cfg
.max_entries_rcq
= rq1_entries
+ rq2_entries
+ rq3_entries
;
2282 pr_cfg
.max_entries_scq
= sq_entries
* 2;
2283 pr_cfg
.max_entries_sq
= sq_entries
;
2284 pr_cfg
.max_entries_rq1
= rq1_entries
;
2285 pr_cfg
.max_entries_rq2
= rq2_entries
;
2286 pr_cfg
.max_entries_rq3
= rq3_entries
;
2288 pr_cfg_small_rx
.max_entries_rcq
= 1;
2289 pr_cfg_small_rx
.max_entries_scq
= sq_entries
;
2290 pr_cfg_small_rx
.max_entries_sq
= sq_entries
;
2291 pr_cfg_small_rx
.max_entries_rq1
= 1;
2292 pr_cfg_small_rx
.max_entries_rq2
= 1;
2293 pr_cfg_small_rx
.max_entries_rq3
= 1;
2295 for (i
= 0; i
< def_qps
; i
++) {
2296 ret
= ehea_init_port_res(port
, &port
->port_res
[i
], &pr_cfg
, i
);
2300 for (i
= def_qps
; i
< def_qps
; i
++) {
2301 ret
= ehea_init_port_res(port
, &port
->port_res
[i
],
2302 &pr_cfg_small_rx
, i
);
2311 ehea_clean_portres(port
, &port
->port_res
[i
]);
2314 ehea_destroy_eq(port
->qp_eq
);
2318 static int ehea_clean_all_portres(struct ehea_port
*port
)
2323 for (i
= 0; i
< port
->num_def_qps
; i
++)
2324 ret
|= ehea_clean_portres(port
, &port
->port_res
[i
]);
2326 ret
|= ehea_destroy_eq(port
->qp_eq
);
2331 static void ehea_remove_adapter_mr(struct ehea_adapter
*adapter
)
2333 if (adapter
->active_ports
)
2336 ehea_rem_mr(&adapter
->mr
);
2339 static int ehea_add_adapter_mr(struct ehea_adapter
*adapter
)
2341 if (adapter
->active_ports
)
2344 return ehea_reg_kernel_mr(adapter
, &adapter
->mr
);
2347 static int ehea_up(struct net_device
*dev
)
2350 struct ehea_port
*port
= netdev_priv(dev
);
2352 if (port
->state
== EHEA_PORT_UP
)
2355 ret
= ehea_port_res_setup(port
, port
->num_def_qps
);
2357 netdev_err(dev
, "port_res_failed\n");
2361 /* Set default QP for this port */
2362 ret
= ehea_configure_port(port
);
2364 netdev_err(dev
, "ehea_configure_port failed. ret:%d\n", ret
);
2368 ret
= ehea_reg_interrupts(dev
);
2370 netdev_err(dev
, "reg_interrupts failed. ret:%d\n", ret
);
2374 for (i
= 0; i
< port
->num_def_qps
; i
++) {
2375 ret
= ehea_activate_qp(port
->adapter
, port
->port_res
[i
].qp
);
2377 netdev_err(dev
, "activate_qp failed\n");
2382 for (i
= 0; i
< port
->num_def_qps
; i
++) {
2383 ret
= ehea_fill_port_res(&port
->port_res
[i
]);
2385 netdev_err(dev
, "out_free_irqs\n");
2390 ret
= ehea_broadcast_reg_helper(port
, H_REG_BCMC
);
2396 port
->state
= EHEA_PORT_UP
;
2402 ehea_free_interrupts(dev
);
2405 ehea_clean_all_portres(port
);
2408 netdev_info(dev
, "Failed starting. ret=%i\n", ret
);
2410 ehea_update_bcmc_registrations();
2411 ehea_update_firmware_handles();
2416 static void port_napi_disable(struct ehea_port
*port
)
2420 for (i
= 0; i
< port
->num_def_qps
; i
++)
2421 napi_disable(&port
->port_res
[i
].napi
);
2424 static void port_napi_enable(struct ehea_port
*port
)
2428 for (i
= 0; i
< port
->num_def_qps
; i
++)
2429 napi_enable(&port
->port_res
[i
].napi
);
2432 static int ehea_open(struct net_device
*dev
)
2435 struct ehea_port
*port
= netdev_priv(dev
);
2437 mutex_lock(&port
->port_lock
);
2439 netif_info(port
, ifup
, dev
, "enabling port\n");
2441 netif_carrier_off(dev
);
2445 port_napi_enable(port
);
2446 netif_tx_start_all_queues(dev
);
2449 mutex_unlock(&port
->port_lock
);
2450 schedule_delayed_work(&port
->stats_work
,
2451 round_jiffies_relative(msecs_to_jiffies(1000)));
2456 static int ehea_down(struct net_device
*dev
)
2459 struct ehea_port
*port
= netdev_priv(dev
);
2461 if (port
->state
== EHEA_PORT_DOWN
)
2464 ehea_drop_multicast_list(dev
);
2465 ehea_allmulti(dev
, 0);
2466 ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
2468 ehea_free_interrupts(dev
);
2470 port
->state
= EHEA_PORT_DOWN
;
2472 ehea_update_bcmc_registrations();
2474 ret
= ehea_clean_all_portres(port
);
2476 netdev_info(dev
, "Failed freeing resources. ret=%i\n", ret
);
2478 ehea_update_firmware_handles();
2483 static int ehea_stop(struct net_device
*dev
)
2486 struct ehea_port
*port
= netdev_priv(dev
);
2488 netif_info(port
, ifdown
, dev
, "disabling port\n");
2490 set_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
);
2491 cancel_work_sync(&port
->reset_task
);
2492 cancel_delayed_work_sync(&port
->stats_work
);
2493 mutex_lock(&port
->port_lock
);
2494 netif_tx_stop_all_queues(dev
);
2495 port_napi_disable(port
);
2496 ret
= ehea_down(dev
);
2497 mutex_unlock(&port
->port_lock
);
2498 clear_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
);
2502 static void ehea_purge_sq(struct ehea_qp
*orig_qp
)
2504 struct ehea_qp qp
= *orig_qp
;
2505 struct ehea_qp_init_attr
*init_attr
= &qp
.init_attr
;
2506 struct ehea_swqe
*swqe
;
2510 for (i
= 0; i
< init_attr
->act_nr_send_wqes
; i
++) {
2511 swqe
= ehea_get_swqe(&qp
, &wqe_index
);
2512 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
2516 static void ehea_flush_sq(struct ehea_port
*port
)
2520 for (i
= 0; i
< port
->num_def_qps
; i
++) {
2521 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2522 int swqe_max
= pr
->sq_skba_size
- 2 - pr
->swqe_ll_count
;
2525 ret
= wait_event_timeout(port
->swqe_avail_wq
,
2526 atomic_read(&pr
->swqe_avail
) >= swqe_max
,
2527 msecs_to_jiffies(100));
2530 pr_err("WARNING: sq not flushed completely\n");
2536 static int ehea_stop_qps(struct net_device
*dev
)
2538 struct ehea_port
*port
= netdev_priv(dev
);
2539 struct ehea_adapter
*adapter
= port
->adapter
;
2540 struct hcp_modify_qp_cb0
*cb0
;
2548 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
2554 for (i
= 0; i
< (port
->num_def_qps
); i
++) {
2555 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2556 struct ehea_qp
*qp
= pr
->qp
;
2558 /* Purge send queue */
2561 /* Disable queue pair */
2562 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2563 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2565 if (hret
!= H_SUCCESS
) {
2566 pr_err("query_ehea_qp failed (1)\n");
2570 cb0
->qp_ctl_reg
= (cb0
->qp_ctl_reg
& H_QP_CR_RES_STATE
) << 8;
2571 cb0
->qp_ctl_reg
&= ~H_QP_CR_ENABLED
;
2573 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2574 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
,
2576 &dummy64
, &dummy16
, &dummy16
);
2577 if (hret
!= H_SUCCESS
) {
2578 pr_err("modify_ehea_qp failed (1)\n");
2582 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2583 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2585 if (hret
!= H_SUCCESS
) {
2586 pr_err("query_ehea_qp failed (2)\n");
2590 /* deregister shared memory regions */
2591 dret
= ehea_rem_smrs(pr
);
2593 pr_err("unreg shared memory region failed\n");
2600 free_page((unsigned long)cb0
);
2605 static void ehea_update_rqs(struct ehea_qp
*orig_qp
, struct ehea_port_res
*pr
)
2607 struct ehea_qp qp
= *orig_qp
;
2608 struct ehea_qp_init_attr
*init_attr
= &qp
.init_attr
;
2609 struct ehea_rwqe
*rwqe
;
2610 struct sk_buff
**skba_rq2
= pr
->rq2_skba
.arr
;
2611 struct sk_buff
**skba_rq3
= pr
->rq3_skba
.arr
;
2612 struct sk_buff
*skb
;
2613 u32 lkey
= pr
->recv_mr
.lkey
;
2619 for (i
= 0; i
< init_attr
->act_nr_rwqes_rq2
+ 1; i
++) {
2620 rwqe
= ehea_get_next_rwqe(&qp
, 2);
2621 rwqe
->sg_list
[0].l_key
= lkey
;
2622 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, rwqe
->wr_id
);
2623 skb
= skba_rq2
[index
];
2625 rwqe
->sg_list
[0].vaddr
= ehea_map_vaddr(skb
->data
);
2628 for (i
= 0; i
< init_attr
->act_nr_rwqes_rq3
+ 1; i
++) {
2629 rwqe
= ehea_get_next_rwqe(&qp
, 3);
2630 rwqe
->sg_list
[0].l_key
= lkey
;
2631 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, rwqe
->wr_id
);
2632 skb
= skba_rq3
[index
];
2634 rwqe
->sg_list
[0].vaddr
= ehea_map_vaddr(skb
->data
);
2638 static int ehea_restart_qps(struct net_device
*dev
)
2640 struct ehea_port
*port
= netdev_priv(dev
);
2641 struct ehea_adapter
*adapter
= port
->adapter
;
2645 struct hcp_modify_qp_cb0
*cb0
;
2650 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
2656 for (i
= 0; i
< (port
->num_def_qps
); i
++) {
2657 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2658 struct ehea_qp
*qp
= pr
->qp
;
2660 ret
= ehea_gen_smrs(pr
);
2662 netdev_err(dev
, "creation of shared memory regions failed\n");
2666 ehea_update_rqs(qp
, pr
);
2668 /* Enable queue pair */
2669 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2670 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2672 if (hret
!= H_SUCCESS
) {
2673 netdev_err(dev
, "query_ehea_qp failed (1)\n");
2677 cb0
->qp_ctl_reg
= (cb0
->qp_ctl_reg
& H_QP_CR_RES_STATE
) << 8;
2678 cb0
->qp_ctl_reg
|= H_QP_CR_ENABLED
;
2680 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2681 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
,
2683 &dummy64
, &dummy16
, &dummy16
);
2684 if (hret
!= H_SUCCESS
) {
2685 netdev_err(dev
, "modify_ehea_qp failed (1)\n");
2689 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2690 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2692 if (hret
!= H_SUCCESS
) {
2693 netdev_err(dev
, "query_ehea_qp failed (2)\n");
2697 /* refill entire queue */
2698 ehea_refill_rq1(pr
, pr
->rq1_skba
.index
, 0);
2699 ehea_refill_rq2(pr
, 0);
2700 ehea_refill_rq3(pr
, 0);
2703 free_page((unsigned long)cb0
);
2708 static void ehea_reset_port(struct work_struct
*work
)
2711 struct ehea_port
*port
=
2712 container_of(work
, struct ehea_port
, reset_task
);
2713 struct net_device
*dev
= port
->netdev
;
2715 mutex_lock(&dlpar_mem_lock
);
2717 mutex_lock(&port
->port_lock
);
2718 netif_tx_disable(dev
);
2720 port_napi_disable(port
);
2728 ehea_set_multicast_list(dev
);
2730 netif_info(port
, timer
, dev
, "reset successful\n");
2732 port_napi_enable(port
);
2734 netif_tx_wake_all_queues(dev
);
2736 mutex_unlock(&port
->port_lock
);
2737 mutex_unlock(&dlpar_mem_lock
);
2740 static void ehea_rereg_mrs(void)
2743 struct ehea_adapter
*adapter
;
2745 pr_info("LPAR memory changed - re-initializing driver\n");
2747 list_for_each_entry(adapter
, &adapter_list
, list
)
2748 if (adapter
->active_ports
) {
2749 /* Shutdown all ports */
2750 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++) {
2751 struct ehea_port
*port
= adapter
->port
[i
];
2752 struct net_device
*dev
;
2759 if (dev
->flags
& IFF_UP
) {
2760 mutex_lock(&port
->port_lock
);
2761 netif_tx_disable(dev
);
2762 ehea_flush_sq(port
);
2763 ret
= ehea_stop_qps(dev
);
2765 mutex_unlock(&port
->port_lock
);
2768 port_napi_disable(port
);
2769 mutex_unlock(&port
->port_lock
);
2771 reset_sq_restart_flag(port
);
2774 /* Unregister old memory region */
2775 ret
= ehea_rem_mr(&adapter
->mr
);
2777 pr_err("unregister MR failed - driver inoperable!\n");
2782 clear_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
2784 list_for_each_entry(adapter
, &adapter_list
, list
)
2785 if (adapter
->active_ports
) {
2786 /* Register new memory region */
2787 ret
= ehea_reg_kernel_mr(adapter
, &adapter
->mr
);
2789 pr_err("register MR failed - driver inoperable!\n");
2793 /* Restart all ports */
2794 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++) {
2795 struct ehea_port
*port
= adapter
->port
[i
];
2798 struct net_device
*dev
= port
->netdev
;
2800 if (dev
->flags
& IFF_UP
) {
2801 mutex_lock(&port
->port_lock
);
2802 ret
= ehea_restart_qps(dev
);
2805 port_napi_enable(port
);
2806 netif_tx_wake_all_queues(dev
);
2808 netdev_err(dev
, "Unable to restart QPS\n");
2810 mutex_unlock(&port
->port_lock
);
2815 pr_info("re-initializing driver complete\n");
2820 static void ehea_tx_watchdog(struct net_device
*dev
)
2822 struct ehea_port
*port
= netdev_priv(dev
);
2824 if (netif_carrier_ok(dev
) &&
2825 !test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))
2826 ehea_schedule_port_reset(port
);
2829 static int ehea_sense_adapter_attr(struct ehea_adapter
*adapter
)
2831 struct hcp_query_ehea
*cb
;
2835 cb
= (void *)get_zeroed_page(GFP_KERNEL
);
2841 hret
= ehea_h_query_ehea(adapter
->handle
, cb
);
2843 if (hret
!= H_SUCCESS
) {
2848 adapter
->max_mc_mac
= cb
->max_mc_mac
- 1;
2852 free_page((unsigned long)cb
);
2857 static int ehea_get_jumboframe_status(struct ehea_port
*port
, int *jumbo
)
2859 struct hcp_ehea_port_cb4
*cb4
;
2865 /* (Try to) enable *jumbo frames */
2866 cb4
= (void *)get_zeroed_page(GFP_KERNEL
);
2868 pr_err("no mem for cb4\n");
2872 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
2873 port
->logical_port_id
,
2875 H_PORT_CB4_JUMBO
, cb4
);
2876 if (hret
== H_SUCCESS
) {
2877 if (cb4
->jumbo_frame
)
2880 cb4
->jumbo_frame
= 1;
2881 hret
= ehea_h_modify_ehea_port(port
->adapter
->
2888 if (hret
== H_SUCCESS
)
2894 free_page((unsigned long)cb4
);
2900 static ssize_t
ehea_show_port_id(struct device
*dev
,
2901 struct device_attribute
*attr
, char *buf
)
2903 struct ehea_port
*port
= container_of(dev
, struct ehea_port
, ofdev
.dev
);
2904 return sprintf(buf
, "%d", port
->logical_port_id
);
2907 static DEVICE_ATTR(log_port_id
, S_IRUSR
| S_IRGRP
| S_IROTH
, ehea_show_port_id
,
2910 static void logical_port_release(struct device
*dev
)
2912 struct ehea_port
*port
= container_of(dev
, struct ehea_port
, ofdev
.dev
);
2913 of_node_put(port
->ofdev
.dev
.of_node
);
2916 static struct device
*ehea_register_port(struct ehea_port
*port
,
2917 struct device_node
*dn
)
2921 port
->ofdev
.dev
.of_node
= of_node_get(dn
);
2922 port
->ofdev
.dev
.parent
= &port
->adapter
->ofdev
->dev
;
2923 port
->ofdev
.dev
.bus
= &ibmebus_bus_type
;
2925 dev_set_name(&port
->ofdev
.dev
, "port%d", port_name_cnt
++);
2926 port
->ofdev
.dev
.release
= logical_port_release
;
2928 ret
= of_device_register(&port
->ofdev
);
2930 pr_err("failed to register device. ret=%d\n", ret
);
2934 ret
= device_create_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
2936 pr_err("failed to register attributes, ret=%d\n", ret
);
2937 goto out_unreg_of_dev
;
2940 return &port
->ofdev
.dev
;
2943 of_device_unregister(&port
->ofdev
);
2948 static void ehea_unregister_port(struct ehea_port
*port
)
2950 device_remove_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
2951 of_device_unregister(&port
->ofdev
);
2954 static const struct net_device_ops ehea_netdev_ops
= {
2955 .ndo_open
= ehea_open
,
2956 .ndo_stop
= ehea_stop
,
2957 .ndo_start_xmit
= ehea_start_xmit
,
2958 #ifdef CONFIG_NET_POLL_CONTROLLER
2959 .ndo_poll_controller
= ehea_netpoll
,
2961 .ndo_get_stats64
= ehea_get_stats64
,
2962 .ndo_set_mac_address
= ehea_set_mac_addr
,
2963 .ndo_validate_addr
= eth_validate_addr
,
2964 .ndo_set_rx_mode
= ehea_set_multicast_list
,
2965 .ndo_vlan_rx_add_vid
= ehea_vlan_rx_add_vid
,
2966 .ndo_vlan_rx_kill_vid
= ehea_vlan_rx_kill_vid
,
2967 .ndo_tx_timeout
= ehea_tx_watchdog
,
2970 static struct ehea_port
*ehea_setup_single_port(struct ehea_adapter
*adapter
,
2971 u32 logical_port_id
,
2972 struct device_node
*dn
)
2975 struct net_device
*dev
;
2976 struct ehea_port
*port
;
2977 struct device
*port_dev
;
2980 /* allocate memory for the port structures */
2981 dev
= alloc_etherdev_mq(sizeof(struct ehea_port
), EHEA_MAX_PORT_RES
);
2988 port
= netdev_priv(dev
);
2990 mutex_init(&port
->port_lock
);
2991 port
->state
= EHEA_PORT_DOWN
;
2992 port
->sig_comp_iv
= sq_entries
/ 10;
2994 port
->adapter
= adapter
;
2996 port
->logical_port_id
= logical_port_id
;
2998 port
->msg_enable
= netif_msg_init(msg_level
, EHEA_MSG_DEFAULT
);
3000 port
->mc_list
= kzalloc(sizeof(struct ehea_mc_list
), GFP_KERNEL
);
3001 if (!port
->mc_list
) {
3003 goto out_free_ethdev
;
3006 INIT_LIST_HEAD(&port
->mc_list
->list
);
3008 ret
= ehea_sense_port_attr(port
);
3010 goto out_free_mc_list
;
3012 netif_set_real_num_rx_queues(dev
, port
->num_def_qps
);
3013 netif_set_real_num_tx_queues(dev
, port
->num_def_qps
);
3015 port_dev
= ehea_register_port(port
, dn
);
3017 goto out_free_mc_list
;
3019 SET_NETDEV_DEV(dev
, port_dev
);
3021 /* initialize net_device structure */
3022 memcpy(dev
->dev_addr
, &port
->mac_addr
, ETH_ALEN
);
3024 dev
->netdev_ops
= &ehea_netdev_ops
;
3025 ehea_set_ethtool_ops(dev
);
3027 dev
->hw_features
= NETIF_F_SG
| NETIF_F_TSO
|
3028 NETIF_F_IP_CSUM
| NETIF_F_HW_VLAN_CTAG_TX
;
3029 dev
->features
= NETIF_F_SG
| NETIF_F_TSO
|
3030 NETIF_F_HIGHDMA
| NETIF_F_IP_CSUM
|
3031 NETIF_F_HW_VLAN_CTAG_TX
| NETIF_F_HW_VLAN_CTAG_RX
|
3032 NETIF_F_HW_VLAN_CTAG_FILTER
| NETIF_F_RXCSUM
;
3033 dev
->vlan_features
= NETIF_F_SG
| NETIF_F_TSO
| NETIF_F_HIGHDMA
|
3035 dev
->watchdog_timeo
= EHEA_WATCH_DOG_TIMEOUT
;
3037 /* MTU range: 68 - 9022 */
3038 dev
->min_mtu
= ETH_MIN_MTU
;
3039 dev
->max_mtu
= EHEA_MAX_PACKET_SIZE
;
3041 INIT_WORK(&port
->reset_task
, ehea_reset_port
);
3042 INIT_DELAYED_WORK(&port
->stats_work
, ehea_update_stats
);
3044 init_waitqueue_head(&port
->swqe_avail_wq
);
3045 init_waitqueue_head(&port
->restart_wq
);
3047 memset(&port
->stats
, 0, sizeof(struct net_device_stats
));
3048 ret
= register_netdev(dev
);
3050 pr_err("register_netdev failed. ret=%d\n", ret
);
3051 goto out_unreg_port
;
3054 ret
= ehea_get_jumboframe_status(port
, &jumbo
);
3056 netdev_err(dev
, "failed determining jumbo frame status\n");
3058 netdev_info(dev
, "Jumbo frames are %sabled\n",
3059 jumbo
== 1 ? "en" : "dis");
3061 adapter
->active_ports
++;
3066 ehea_unregister_port(port
);
3069 kfree(port
->mc_list
);
3075 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3076 logical_port_id
, ret
);
3080 static void ehea_shutdown_single_port(struct ehea_port
*port
)
3082 struct ehea_adapter
*adapter
= port
->adapter
;
3084 cancel_work_sync(&port
->reset_task
);
3085 cancel_delayed_work_sync(&port
->stats_work
);
3086 unregister_netdev(port
->netdev
);
3087 ehea_unregister_port(port
);
3088 kfree(port
->mc_list
);
3089 free_netdev(port
->netdev
);
3090 adapter
->active_ports
--;
3093 static int ehea_setup_ports(struct ehea_adapter
*adapter
)
3095 struct device_node
*lhea_dn
;
3096 struct device_node
*eth_dn
= NULL
;
3098 const u32
*dn_log_port_id
;
3101 lhea_dn
= adapter
->ofdev
->dev
.of_node
;
3102 while ((eth_dn
= of_get_next_child(lhea_dn
, eth_dn
))) {
3104 dn_log_port_id
= of_get_property(eth_dn
, "ibm,hea-port-no",
3106 if (!dn_log_port_id
) {
3107 pr_err("bad device node: eth_dn name=%s\n",
3112 if (ehea_add_adapter_mr(adapter
)) {
3113 pr_err("creating MR failed\n");
3114 of_node_put(eth_dn
);
3118 adapter
->port
[i
] = ehea_setup_single_port(adapter
,
3121 if (adapter
->port
[i
])
3122 netdev_info(adapter
->port
[i
]->netdev
,
3123 "logical port id #%d\n", *dn_log_port_id
);
3125 ehea_remove_adapter_mr(adapter
);
3132 static struct device_node
*ehea_get_eth_dn(struct ehea_adapter
*adapter
,
3133 u32 logical_port_id
)
3135 struct device_node
*lhea_dn
;
3136 struct device_node
*eth_dn
= NULL
;
3137 const u32
*dn_log_port_id
;
3139 lhea_dn
= adapter
->ofdev
->dev
.of_node
;
3140 while ((eth_dn
= of_get_next_child(lhea_dn
, eth_dn
))) {
3142 dn_log_port_id
= of_get_property(eth_dn
, "ibm,hea-port-no",
3145 if (*dn_log_port_id
== logical_port_id
)
3152 static ssize_t
ehea_probe_port(struct device
*dev
,
3153 struct device_attribute
*attr
,
3154 const char *buf
, size_t count
)
3156 struct ehea_adapter
*adapter
= dev_get_drvdata(dev
);
3157 struct ehea_port
*port
;
3158 struct device_node
*eth_dn
= NULL
;
3161 u32 logical_port_id
;
3163 sscanf(buf
, "%d", &logical_port_id
);
3165 port
= ehea_get_port(adapter
, logical_port_id
);
3168 netdev_info(port
->netdev
, "adding port with logical port id=%d failed: port already configured\n",
3173 eth_dn
= ehea_get_eth_dn(adapter
, logical_port_id
);
3176 pr_info("no logical port with id %d found\n", logical_port_id
);
3180 if (ehea_add_adapter_mr(adapter
)) {
3181 pr_err("creating MR failed\n");
3185 port
= ehea_setup_single_port(adapter
, logical_port_id
, eth_dn
);
3187 of_node_put(eth_dn
);
3190 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3191 if (!adapter
->port
[i
]) {
3192 adapter
->port
[i
] = port
;
3196 netdev_info(port
->netdev
, "added: (logical port id=%d)\n",
3199 ehea_remove_adapter_mr(adapter
);
3203 return (ssize_t
) count
;
3206 static ssize_t
ehea_remove_port(struct device
*dev
,
3207 struct device_attribute
*attr
,
3208 const char *buf
, size_t count
)
3210 struct ehea_adapter
*adapter
= dev_get_drvdata(dev
);
3211 struct ehea_port
*port
;
3213 u32 logical_port_id
;
3215 sscanf(buf
, "%d", &logical_port_id
);
3217 port
= ehea_get_port(adapter
, logical_port_id
);
3220 netdev_info(port
->netdev
, "removed: (logical port id=%d)\n",
3223 ehea_shutdown_single_port(port
);
3225 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3226 if (adapter
->port
[i
] == port
) {
3227 adapter
->port
[i
] = NULL
;
3231 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3236 ehea_remove_adapter_mr(adapter
);
3238 return (ssize_t
) count
;
3241 static DEVICE_ATTR(probe_port
, S_IWUSR
, NULL
, ehea_probe_port
);
3242 static DEVICE_ATTR(remove_port
, S_IWUSR
, NULL
, ehea_remove_port
);
3244 static int ehea_create_device_sysfs(struct platform_device
*dev
)
3246 int ret
= device_create_file(&dev
->dev
, &dev_attr_probe_port
);
3250 ret
= device_create_file(&dev
->dev
, &dev_attr_remove_port
);
3255 static void ehea_remove_device_sysfs(struct platform_device
*dev
)
3257 device_remove_file(&dev
->dev
, &dev_attr_probe_port
);
3258 device_remove_file(&dev
->dev
, &dev_attr_remove_port
);
3261 static int ehea_reboot_notifier(struct notifier_block
*nb
,
3262 unsigned long action
, void *unused
)
3264 if (action
== SYS_RESTART
) {
3265 pr_info("Reboot: freeing all eHEA resources\n");
3266 ibmebus_unregister_driver(&ehea_driver
);
3271 static struct notifier_block ehea_reboot_nb
= {
3272 .notifier_call
= ehea_reboot_notifier
,
3275 static int ehea_mem_notifier(struct notifier_block
*nb
,
3276 unsigned long action
, void *data
)
3278 int ret
= NOTIFY_BAD
;
3279 struct memory_notify
*arg
= data
;
3281 mutex_lock(&dlpar_mem_lock
);
3284 case MEM_CANCEL_OFFLINE
:
3285 pr_info("memory offlining canceled");
3286 /* Fall through: re-add canceled memory block */
3289 pr_info("memory is going online");
3290 set_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
3291 if (ehea_add_sect_bmap(arg
->start_pfn
, arg
->nr_pages
))
3296 case MEM_GOING_OFFLINE
:
3297 pr_info("memory is going offline");
3298 set_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
3299 if (ehea_rem_sect_bmap(arg
->start_pfn
, arg
->nr_pages
))
3308 ehea_update_firmware_handles();
3312 mutex_unlock(&dlpar_mem_lock
);
3316 static struct notifier_block ehea_mem_nb
= {
3317 .notifier_call
= ehea_mem_notifier
,
3320 static void ehea_crash_handler(void)
3324 if (ehea_fw_handles
.arr
)
3325 for (i
= 0; i
< ehea_fw_handles
.num_entries
; i
++)
3326 ehea_h_free_resource(ehea_fw_handles
.arr
[i
].adh
,
3327 ehea_fw_handles
.arr
[i
].fwh
,
3330 if (ehea_bcmc_regs
.arr
)
3331 for (i
= 0; i
< ehea_bcmc_regs
.num_entries
; i
++)
3332 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs
.arr
[i
].adh
,
3333 ehea_bcmc_regs
.arr
[i
].port_id
,
3334 ehea_bcmc_regs
.arr
[i
].reg_type
,
3335 ehea_bcmc_regs
.arr
[i
].macaddr
,
3339 static atomic_t ehea_memory_hooks_registered
;
3341 /* Register memory hooks on probe of first adapter */
3342 static int ehea_register_memory_hooks(void)
3346 if (atomic_inc_return(&ehea_memory_hooks_registered
) > 1)
3349 ret
= ehea_create_busmap();
3351 pr_info("ehea_create_busmap failed\n");
3355 ret
= register_reboot_notifier(&ehea_reboot_nb
);
3357 pr_info("register_reboot_notifier failed\n");
3361 ret
= register_memory_notifier(&ehea_mem_nb
);
3363 pr_info("register_memory_notifier failed\n");
3367 ret
= crash_shutdown_register(ehea_crash_handler
);
3369 pr_info("crash_shutdown_register failed\n");
3376 unregister_memory_notifier(&ehea_mem_nb
);
3378 unregister_reboot_notifier(&ehea_reboot_nb
);
3380 atomic_dec(&ehea_memory_hooks_registered
);
3384 static void ehea_unregister_memory_hooks(void)
3386 /* Only remove the hooks if we've registered them */
3387 if (atomic_read(&ehea_memory_hooks_registered
) == 0)
3390 unregister_reboot_notifier(&ehea_reboot_nb
);
3391 if (crash_shutdown_unregister(ehea_crash_handler
))
3392 pr_info("failed unregistering crash handler\n");
3393 unregister_memory_notifier(&ehea_mem_nb
);
3396 static int ehea_probe_adapter(struct platform_device
*dev
)
3398 struct ehea_adapter
*adapter
;
3399 const u64
*adapter_handle
;
3403 ret
= ehea_register_memory_hooks();
3407 if (!dev
|| !dev
->dev
.of_node
) {
3408 pr_err("Invalid ibmebus device probed\n");
3412 adapter
= devm_kzalloc(&dev
->dev
, sizeof(*adapter
), GFP_KERNEL
);
3415 dev_err(&dev
->dev
, "no mem for ehea_adapter\n");
3419 list_add(&adapter
->list
, &adapter_list
);
3421 adapter
->ofdev
= dev
;
3423 adapter_handle
= of_get_property(dev
->dev
.of_node
, "ibm,hea-handle",
3426 adapter
->handle
= *adapter_handle
;
3428 if (!adapter
->handle
) {
3429 dev_err(&dev
->dev
, "failed getting handle for adapter"
3430 " '%s'\n", dev
->dev
.of_node
->full_name
);
3435 adapter
->pd
= EHEA_PD_ID
;
3437 platform_set_drvdata(dev
, adapter
);
3440 /* initialize adapter and ports */
3441 /* get adapter properties */
3442 ret
= ehea_sense_adapter_attr(adapter
);
3444 dev_err(&dev
->dev
, "sense_adapter_attr failed: %d\n", ret
);
3448 adapter
->neq
= ehea_create_eq(adapter
,
3449 EHEA_NEQ
, EHEA_MAX_ENTRIES_EQ
, 1);
3450 if (!adapter
->neq
) {
3452 dev_err(&dev
->dev
, "NEQ creation failed\n");
3456 tasklet_init(&adapter
->neq_tasklet
, ehea_neq_tasklet
,
3457 (unsigned long)adapter
);
3459 ret
= ehea_create_device_sysfs(dev
);
3463 ret
= ehea_setup_ports(adapter
);
3465 dev_err(&dev
->dev
, "setup_ports failed\n");
3466 goto out_rem_dev_sysfs
;
3469 ret
= ibmebus_request_irq(adapter
->neq
->attr
.ist1
,
3470 ehea_interrupt_neq
, 0,
3471 "ehea_neq", adapter
);
3473 dev_err(&dev
->dev
, "requesting NEQ IRQ failed\n");
3474 goto out_shutdown_ports
;
3477 /* Handle any events that might be pending. */
3478 tasklet_hi_schedule(&adapter
->neq_tasklet
);
3484 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3485 if (adapter
->port
[i
]) {
3486 ehea_shutdown_single_port(adapter
->port
[i
]);
3487 adapter
->port
[i
] = NULL
;
3491 ehea_remove_device_sysfs(dev
);
3494 ehea_destroy_eq(adapter
->neq
);
3497 list_del(&adapter
->list
);
3500 ehea_update_firmware_handles();
3505 static int ehea_remove(struct platform_device
*dev
)
3507 struct ehea_adapter
*adapter
= platform_get_drvdata(dev
);
3510 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3511 if (adapter
->port
[i
]) {
3512 ehea_shutdown_single_port(adapter
->port
[i
]);
3513 adapter
->port
[i
] = NULL
;
3516 ehea_remove_device_sysfs(dev
);
3518 ibmebus_free_irq(adapter
->neq
->attr
.ist1
, adapter
);
3519 tasklet_kill(&adapter
->neq_tasklet
);
3521 ehea_destroy_eq(adapter
->neq
);
3522 ehea_remove_adapter_mr(adapter
);
3523 list_del(&adapter
->list
);
3525 ehea_update_firmware_handles();
3530 static int check_module_parm(void)
3534 if ((rq1_entries
< EHEA_MIN_ENTRIES_QP
) ||
3535 (rq1_entries
> EHEA_MAX_ENTRIES_RQ1
)) {
3536 pr_info("Bad parameter: rq1_entries\n");
3539 if ((rq2_entries
< EHEA_MIN_ENTRIES_QP
) ||
3540 (rq2_entries
> EHEA_MAX_ENTRIES_RQ2
)) {
3541 pr_info("Bad parameter: rq2_entries\n");
3544 if ((rq3_entries
< EHEA_MIN_ENTRIES_QP
) ||
3545 (rq3_entries
> EHEA_MAX_ENTRIES_RQ3
)) {
3546 pr_info("Bad parameter: rq3_entries\n");
3549 if ((sq_entries
< EHEA_MIN_ENTRIES_QP
) ||
3550 (sq_entries
> EHEA_MAX_ENTRIES_SQ
)) {
3551 pr_info("Bad parameter: sq_entries\n");
3558 static ssize_t
ehea_show_capabilities(struct device_driver
*drv
,
3561 return sprintf(buf
, "%d", EHEA_CAPABILITIES
);
3564 static DRIVER_ATTR(capabilities
, S_IRUSR
| S_IRGRP
| S_IROTH
,
3565 ehea_show_capabilities
, NULL
);
3567 static int __init
ehea_module_init(void)
3571 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION
);
3573 memset(&ehea_fw_handles
, 0, sizeof(ehea_fw_handles
));
3574 memset(&ehea_bcmc_regs
, 0, sizeof(ehea_bcmc_regs
));
3576 mutex_init(&ehea_fw_handles
.lock
);
3577 spin_lock_init(&ehea_bcmc_regs
.lock
);
3579 ret
= check_module_parm();
3583 ret
= ibmebus_register_driver(&ehea_driver
);
3585 pr_err("failed registering eHEA device driver on ebus\n");
3589 ret
= driver_create_file(&ehea_driver
.driver
,
3590 &driver_attr_capabilities
);
3592 pr_err("failed to register capabilities attribute, ret=%d\n",
3600 ibmebus_unregister_driver(&ehea_driver
);
3605 static void __exit
ehea_module_exit(void)
3607 driver_remove_file(&ehea_driver
.driver
, &driver_attr_capabilities
);
3608 ibmebus_unregister_driver(&ehea_driver
);
3609 ehea_unregister_memory_hooks();
3610 kfree(ehea_fw_handles
.arr
);
3611 kfree(ehea_bcmc_regs
.arr
);
3612 ehea_destroy_busmap();
3615 module_init(ehea_module_init
);
3616 module_exit(ehea_module_exit
);