2 * linux/drivers/net/ehea/ehea_main.c
4 * eHEA ethernet device driver for IBM eServer System p
6 * (C) Copyright IBM Corp. 2006
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
29 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
33 #include <linux/tcp.h>
34 #include <linux/udp.h>
36 #include <linux/list.h>
37 #include <linux/slab.h>
38 #include <linux/if_ether.h>
39 #include <linux/notifier.h>
40 #include <linux/reboot.h>
41 #include <linux/memory.h>
42 #include <asm/kexec.h>
43 #include <linux/mutex.h>
44 #include <linux/prefetch.h>
50 #include "ehea_phyp.h"
53 MODULE_LICENSE("GPL");
54 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
55 MODULE_DESCRIPTION("IBM eServer HEA Driver");
56 MODULE_VERSION(DRV_VERSION
);
59 static int msg_level
= -1;
60 static int rq1_entries
= EHEA_DEF_ENTRIES_RQ1
;
61 static int rq2_entries
= EHEA_DEF_ENTRIES_RQ2
;
62 static int rq3_entries
= EHEA_DEF_ENTRIES_RQ3
;
63 static int sq_entries
= EHEA_DEF_ENTRIES_SQ
;
64 static int use_mcs
= 1;
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);
75 MODULE_PARM_DESC(msg_level
, "msg_level");
76 MODULE_PARM_DESC(prop_carrier_state
, "Propagate carrier state of physical "
77 "port to stack. 1:yes, 0:no. Default = 0 ");
78 MODULE_PARM_DESC(rq3_entries
, "Number of entries for Receive Queue 3 "
79 "[2^x - 1], x = [6..14]. Default = "
80 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3
) ")");
81 MODULE_PARM_DESC(rq2_entries
, "Number of entries for Receive Queue 2 "
82 "[2^x - 1], x = [6..14]. Default = "
83 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2
) ")");
84 MODULE_PARM_DESC(rq1_entries
, "Number of entries for Receive Queue 1 "
85 "[2^x - 1], x = [6..14]. Default = "
86 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1
) ")");
87 MODULE_PARM_DESC(sq_entries
, " Number of entries for the Send Queue "
88 "[2^x - 1], x = [6..14]. Default = "
89 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ
) ")");
90 MODULE_PARM_DESC(use_mcs
, " Multiple receive queues, 1: enable, 0: disable, "
93 static int port_name_cnt
;
94 static LIST_HEAD(adapter_list
);
95 static unsigned long ehea_driver_flags
;
96 static DEFINE_MUTEX(dlpar_mem_lock
);
97 struct ehea_fw_handle_array ehea_fw_handles
;
98 struct ehea_bcmc_reg_array ehea_bcmc_regs
;
101 static int __devinit
ehea_probe_adapter(struct platform_device
*dev
,
102 const struct of_device_id
*id
);
104 static int __devexit
ehea_remove(struct platform_device
*dev
);
106 static struct of_device_id ehea_device_table
[] = {
109 .compatible
= "IBM,lhea",
113 MODULE_DEVICE_TABLE(of
, ehea_device_table
);
115 static struct of_platform_driver ehea_driver
= {
118 .owner
= THIS_MODULE
,
119 .of_match_table
= ehea_device_table
,
121 .probe
= ehea_probe_adapter
,
122 .remove
= ehea_remove
,
125 void ehea_dump(void *adr
, int len
, char *msg
)
128 unsigned char *deb
= adr
;
129 for (x
= 0; x
< len
; x
+= 16) {
130 pr_info("%s adr=%p ofs=%04x %016llx %016llx\n",
131 msg
, deb
, x
, *((u64
*)&deb
[0]), *((u64
*)&deb
[8]));
136 void ehea_schedule_port_reset(struct ehea_port
*port
)
138 if (!test_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
))
139 schedule_work(&port
->reset_task
);
142 static void ehea_update_firmware_handles(void)
144 struct ehea_fw_handle_entry
*arr
= NULL
;
145 struct ehea_adapter
*adapter
;
146 int num_adapters
= 0;
150 int num_fw_handles
, k
, l
;
152 /* Determine number of handles */
153 mutex_lock(&ehea_fw_handles
.lock
);
155 list_for_each_entry(adapter
, &adapter_list
, list
) {
158 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
159 struct ehea_port
*port
= adapter
->port
[k
];
161 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
165 num_portres
+= port
->num_def_qps
;
169 num_fw_handles
= num_adapters
* EHEA_NUM_ADAPTER_FW_HANDLES
+
170 num_ports
* EHEA_NUM_PORT_FW_HANDLES
+
171 num_portres
* EHEA_NUM_PORTRES_FW_HANDLES
;
173 if (num_fw_handles
) {
174 arr
= kcalloc(num_fw_handles
, sizeof(*arr
), GFP_KERNEL
);
176 goto out
; /* Keep the existing array */
180 list_for_each_entry(adapter
, &adapter_list
, list
) {
181 if (num_adapters
== 0)
184 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
185 struct ehea_port
*port
= adapter
->port
[k
];
187 if (!port
|| (port
->state
!= EHEA_PORT_UP
) ||
191 for (l
= 0; l
< port
->num_def_qps
; l
++) {
192 struct ehea_port_res
*pr
= &port
->port_res
[l
];
194 arr
[i
].adh
= adapter
->handle
;
195 arr
[i
++].fwh
= pr
->qp
->fw_handle
;
196 arr
[i
].adh
= adapter
->handle
;
197 arr
[i
++].fwh
= pr
->send_cq
->fw_handle
;
198 arr
[i
].adh
= adapter
->handle
;
199 arr
[i
++].fwh
= pr
->recv_cq
->fw_handle
;
200 arr
[i
].adh
= adapter
->handle
;
201 arr
[i
++].fwh
= pr
->eq
->fw_handle
;
202 arr
[i
].adh
= adapter
->handle
;
203 arr
[i
++].fwh
= pr
->send_mr
.handle
;
204 arr
[i
].adh
= adapter
->handle
;
205 arr
[i
++].fwh
= pr
->recv_mr
.handle
;
207 arr
[i
].adh
= adapter
->handle
;
208 arr
[i
++].fwh
= port
->qp_eq
->fw_handle
;
212 arr
[i
].adh
= adapter
->handle
;
213 arr
[i
++].fwh
= adapter
->neq
->fw_handle
;
215 if (adapter
->mr
.handle
) {
216 arr
[i
].adh
= adapter
->handle
;
217 arr
[i
++].fwh
= adapter
->mr
.handle
;
223 kfree(ehea_fw_handles
.arr
);
224 ehea_fw_handles
.arr
= arr
;
225 ehea_fw_handles
.num_entries
= i
;
227 mutex_unlock(&ehea_fw_handles
.lock
);
230 static void ehea_update_bcmc_registrations(void)
233 struct ehea_bcmc_reg_entry
*arr
= NULL
;
234 struct ehea_adapter
*adapter
;
235 struct ehea_mc_list
*mc_entry
;
236 int num_registrations
= 0;
240 spin_lock_irqsave(&ehea_bcmc_regs
.lock
, flags
);
242 /* Determine number of registrations */
243 list_for_each_entry(adapter
, &adapter_list
, list
)
244 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
245 struct ehea_port
*port
= adapter
->port
[k
];
247 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
250 num_registrations
+= 2; /* Broadcast registrations */
252 list_for_each_entry(mc_entry
, &port
->mc_list
->list
,list
)
253 num_registrations
+= 2;
256 if (num_registrations
) {
257 arr
= kcalloc(num_registrations
, sizeof(*arr
), GFP_ATOMIC
);
259 goto out
; /* Keep the existing array */
263 list_for_each_entry(adapter
, &adapter_list
, list
) {
264 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
265 struct ehea_port
*port
= adapter
->port
[k
];
267 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
270 if (num_registrations
== 0)
273 arr
[i
].adh
= adapter
->handle
;
274 arr
[i
].port_id
= port
->logical_port_id
;
275 arr
[i
].reg_type
= EHEA_BCMC_BROADCAST
|
277 arr
[i
++].macaddr
= port
->mac_addr
;
279 arr
[i
].adh
= adapter
->handle
;
280 arr
[i
].port_id
= port
->logical_port_id
;
281 arr
[i
].reg_type
= EHEA_BCMC_BROADCAST
|
282 EHEA_BCMC_VLANID_ALL
;
283 arr
[i
++].macaddr
= port
->mac_addr
;
284 num_registrations
-= 2;
286 list_for_each_entry(mc_entry
,
287 &port
->mc_list
->list
, list
) {
288 if (num_registrations
== 0)
291 arr
[i
].adh
= adapter
->handle
;
292 arr
[i
].port_id
= port
->logical_port_id
;
293 arr
[i
].reg_type
= EHEA_BCMC_SCOPE_ALL
|
294 EHEA_BCMC_MULTICAST
|
296 arr
[i
++].macaddr
= mc_entry
->macaddr
;
298 arr
[i
].adh
= adapter
->handle
;
299 arr
[i
].port_id
= port
->logical_port_id
;
300 arr
[i
].reg_type
= EHEA_BCMC_SCOPE_ALL
|
301 EHEA_BCMC_MULTICAST
|
302 EHEA_BCMC_VLANID_ALL
;
303 arr
[i
++].macaddr
= mc_entry
->macaddr
;
304 num_registrations
-= 2;
310 kfree(ehea_bcmc_regs
.arr
);
311 ehea_bcmc_regs
.arr
= arr
;
312 ehea_bcmc_regs
.num_entries
= i
;
314 spin_unlock_irqrestore(&ehea_bcmc_regs
.lock
, flags
);
317 static struct rtnl_link_stats64
*ehea_get_stats64(struct net_device
*dev
,
318 struct rtnl_link_stats64
*stats
)
320 struct ehea_port
*port
= netdev_priv(dev
);
321 u64 rx_packets
= 0, tx_packets
= 0, rx_bytes
= 0, tx_bytes
= 0;
324 for (i
= 0; i
< port
->num_def_qps
; i
++) {
325 rx_packets
+= port
->port_res
[i
].rx_packets
;
326 rx_bytes
+= port
->port_res
[i
].rx_bytes
;
329 for (i
= 0; i
< port
->num_def_qps
; i
++) {
330 tx_packets
+= port
->port_res
[i
].tx_packets
;
331 tx_bytes
+= port
->port_res
[i
].tx_bytes
;
334 stats
->tx_packets
= tx_packets
;
335 stats
->rx_bytes
= rx_bytes
;
336 stats
->tx_bytes
= tx_bytes
;
337 stats
->rx_packets
= rx_packets
;
342 static void ehea_update_stats(struct work_struct
*work
)
344 struct ehea_port
*port
=
345 container_of(work
, struct ehea_port
, stats_work
.work
);
346 struct net_device
*dev
= port
->netdev
;
347 struct rtnl_link_stats64
*stats
= &port
->stats
;
348 struct hcp_ehea_port_cb2
*cb2
;
351 cb2
= (void *)get_zeroed_page(GFP_KERNEL
);
353 netdev_err(dev
, "No mem for cb2. Some interface statistics were not updated\n");
357 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
358 port
->logical_port_id
,
359 H_PORT_CB2
, H_PORT_CB2_ALL
, cb2
);
360 if (hret
!= H_SUCCESS
) {
361 netdev_err(dev
, "query_ehea_port failed\n");
365 if (netif_msg_hw(port
))
366 ehea_dump(cb2
, sizeof(*cb2
), "net_device_stats");
368 stats
->multicast
= cb2
->rxmcp
;
369 stats
->rx_errors
= cb2
->rxuerr
;
372 free_page((unsigned long)cb2
);
374 schedule_delayed_work(&port
->stats_work
,
375 round_jiffies_relative(msecs_to_jiffies(1000)));
378 static void ehea_refill_rq1(struct ehea_port_res
*pr
, int index
, int nr_of_wqes
)
380 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
381 struct net_device
*dev
= pr
->port
->netdev
;
382 int max_index_mask
= pr
->rq1_skba
.len
- 1;
383 int fill_wqes
= pr
->rq1_skba
.os_skbs
+ nr_of_wqes
;
387 pr
->rq1_skba
.os_skbs
= 0;
389 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
391 pr
->rq1_skba
.index
= index
;
392 pr
->rq1_skba
.os_skbs
= fill_wqes
;
396 for (i
= 0; i
< fill_wqes
; i
++) {
397 if (!skb_arr_rq1
[index
]) {
398 skb_arr_rq1
[index
] = netdev_alloc_skb(dev
,
400 if (!skb_arr_rq1
[index
]) {
401 netdev_info(dev
, "Unable to allocate enough skb in the array\n");
402 pr
->rq1_skba
.os_skbs
= fill_wqes
- i
;
407 index
&= max_index_mask
;
415 ehea_update_rq1a(pr
->qp
, adder
);
418 static void ehea_init_fill_rq1(struct ehea_port_res
*pr
, int nr_rq1a
)
420 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
421 struct net_device
*dev
= pr
->port
->netdev
;
424 if (nr_rq1a
> pr
->rq1_skba
.len
) {
425 netdev_err(dev
, "NR_RQ1A bigger than skb array len\n");
429 for (i
= 0; i
< nr_rq1a
; i
++) {
430 skb_arr_rq1
[i
] = netdev_alloc_skb(dev
, EHEA_L_PKT_SIZE
);
431 if (!skb_arr_rq1
[i
]) {
432 netdev_info(dev
, "Not enough memory to allocate skb array\n");
437 ehea_update_rq1a(pr
->qp
, i
- 1);
440 static int ehea_refill_rq_def(struct ehea_port_res
*pr
,
441 struct ehea_q_skb_arr
*q_skba
, int rq_nr
,
442 int num_wqes
, int wqe_type
, int packet_size
)
444 struct net_device
*dev
= pr
->port
->netdev
;
445 struct ehea_qp
*qp
= pr
->qp
;
446 struct sk_buff
**skb_arr
= q_skba
->arr
;
447 struct ehea_rwqe
*rwqe
;
448 int i
, index
, max_index_mask
, fill_wqes
;
452 fill_wqes
= q_skba
->os_skbs
+ num_wqes
;
455 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
456 q_skba
->os_skbs
= fill_wqes
;
460 index
= q_skba
->index
;
461 max_index_mask
= q_skba
->len
- 1;
462 for (i
= 0; i
< fill_wqes
; i
++) {
466 skb
= netdev_alloc_skb_ip_align(dev
, packet_size
);
468 q_skba
->os_skbs
= fill_wqes
- i
;
469 if (q_skba
->os_skbs
== q_skba
->len
- 2) {
470 netdev_info(pr
->port
->netdev
,
471 "rq%i ran dry - no mem for skb\n",
478 skb_arr
[index
] = skb
;
479 tmp_addr
= ehea_map_vaddr(skb
->data
);
480 if (tmp_addr
== -1) {
482 q_skba
->os_skbs
= fill_wqes
- i
;
487 rwqe
= ehea_get_next_rwqe(qp
, rq_nr
);
488 rwqe
->wr_id
= EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, wqe_type
)
489 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX
, index
);
490 rwqe
->sg_list
[0].l_key
= pr
->recv_mr
.lkey
;
491 rwqe
->sg_list
[0].vaddr
= tmp_addr
;
492 rwqe
->sg_list
[0].len
= packet_size
;
493 rwqe
->data_segments
= 1;
496 index
&= max_index_mask
;
500 q_skba
->index
= index
;
507 ehea_update_rq2a(pr
->qp
, adder
);
509 ehea_update_rq3a(pr
->qp
, adder
);
515 static int ehea_refill_rq2(struct ehea_port_res
*pr
, int nr_of_wqes
)
517 return ehea_refill_rq_def(pr
, &pr
->rq2_skba
, 2,
518 nr_of_wqes
, EHEA_RWQE2_TYPE
,
523 static int ehea_refill_rq3(struct ehea_port_res
*pr
, int nr_of_wqes
)
525 return ehea_refill_rq_def(pr
, &pr
->rq3_skba
, 3,
526 nr_of_wqes
, EHEA_RWQE3_TYPE
,
527 EHEA_MAX_PACKET_SIZE
);
530 static inline int ehea_check_cqe(struct ehea_cqe
*cqe
, int *rq_num
)
532 *rq_num
= (cqe
->type
& EHEA_CQE_TYPE_RQ
) >> 5;
533 if ((cqe
->status
& EHEA_CQE_STAT_ERR_MASK
) == 0)
535 if (((cqe
->status
& EHEA_CQE_STAT_ERR_TCP
) != 0) &&
536 (cqe
->header_length
== 0))
541 static inline void ehea_fill_skb(struct net_device
*dev
,
542 struct sk_buff
*skb
, struct ehea_cqe
*cqe
,
543 struct ehea_port_res
*pr
)
545 int length
= cqe
->num_bytes_transfered
- 4; /*remove CRC */
547 skb_put(skb
, length
);
548 skb
->protocol
= eth_type_trans(skb
, dev
);
550 /* The packet was not an IPV4 packet so a complemented checksum was
551 calculated. The value is found in the Internet Checksum field. */
552 if (cqe
->status
& EHEA_CQE_BLIND_CKSUM
) {
553 skb
->ip_summed
= CHECKSUM_COMPLETE
;
554 skb
->csum
= csum_unfold(~cqe
->inet_checksum_value
);
556 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
558 skb_record_rx_queue(skb
, pr
- &pr
->port
->port_res
[0]);
561 static inline struct sk_buff
*get_skb_by_index(struct sk_buff
**skb_array
,
563 struct ehea_cqe
*cqe
)
565 int skb_index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, cqe
->wr_id
);
576 prefetchw(pref
+ EHEA_CACHE_LINE
);
578 pref
= (skb_array
[x
]->data
);
580 prefetch(pref
+ EHEA_CACHE_LINE
);
581 prefetch(pref
+ EHEA_CACHE_LINE
* 2);
582 prefetch(pref
+ EHEA_CACHE_LINE
* 3);
585 skb
= skb_array
[skb_index
];
586 skb_array
[skb_index
] = NULL
;
590 static inline struct sk_buff
*get_skb_by_index_ll(struct sk_buff
**skb_array
,
591 int arr_len
, int wqe_index
)
603 prefetchw(pref
+ EHEA_CACHE_LINE
);
605 pref
= (skb_array
[x
]->data
);
607 prefetchw(pref
+ EHEA_CACHE_LINE
);
610 skb
= skb_array
[wqe_index
];
611 skb_array
[wqe_index
] = NULL
;
615 static int ehea_treat_poll_error(struct ehea_port_res
*pr
, int rq
,
616 struct ehea_cqe
*cqe
, int *processed_rq2
,
621 if (cqe
->status
& EHEA_CQE_STAT_ERR_TCP
)
622 pr
->p_stats
.err_tcp_cksum
++;
623 if (cqe
->status
& EHEA_CQE_STAT_ERR_IP
)
624 pr
->p_stats
.err_ip_cksum
++;
625 if (cqe
->status
& EHEA_CQE_STAT_ERR_CRC
)
626 pr
->p_stats
.err_frame_crc
++;
630 skb
= get_skb_by_index(pr
->rq2_skba
.arr
, pr
->rq2_skba
.len
, cqe
);
632 } else if (rq
== 3) {
634 skb
= get_skb_by_index(pr
->rq3_skba
.arr
, pr
->rq3_skba
.len
, cqe
);
638 if (cqe
->status
& EHEA_CQE_STAT_FAT_ERR_MASK
) {
639 if (netif_msg_rx_err(pr
->port
)) {
640 pr_err("Critical receive error for QP %d. Resetting port.\n",
641 pr
->qp
->init_attr
.qp_nr
);
642 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
644 ehea_schedule_port_reset(pr
->port
);
651 static int ehea_proc_rwqes(struct net_device
*dev
,
652 struct ehea_port_res
*pr
,
655 struct ehea_port
*port
= pr
->port
;
656 struct ehea_qp
*qp
= pr
->qp
;
657 struct ehea_cqe
*cqe
;
659 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
660 struct sk_buff
**skb_arr_rq2
= pr
->rq2_skba
.arr
;
661 struct sk_buff
**skb_arr_rq3
= pr
->rq3_skba
.arr
;
662 int skb_arr_rq1_len
= pr
->rq1_skba
.len
;
663 int skb_arr_rq2_len
= pr
->rq2_skba
.len
;
664 int skb_arr_rq3_len
= pr
->rq3_skba
.len
;
665 int processed
, processed_rq1
, processed_rq2
, processed_rq3
;
666 u64 processed_bytes
= 0;
667 int wqe_index
, last_wqe_index
, rq
, port_reset
;
669 processed
= processed_rq1
= processed_rq2
= processed_rq3
= 0;
672 cqe
= ehea_poll_rq1(qp
, &wqe_index
);
673 while ((processed
< budget
) && cqe
) {
677 if (netif_msg_rx_status(port
))
678 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
680 last_wqe_index
= wqe_index
;
682 if (!ehea_check_cqe(cqe
, &rq
)) {
685 skb
= get_skb_by_index_ll(skb_arr_rq1
,
688 if (unlikely(!skb
)) {
689 netif_info(port
, rx_err
, dev
,
690 "LL rq1: skb=NULL\n");
692 skb
= netdev_alloc_skb(dev
,
695 netdev_err(dev
, "Not enough memory to allocate skb\n");
699 skb_copy_to_linear_data(skb
, ((char *)cqe
) + 64,
700 cqe
->num_bytes_transfered
- 4);
701 ehea_fill_skb(dev
, skb
, cqe
, pr
);
702 } else if (rq
== 2) {
704 skb
= get_skb_by_index(skb_arr_rq2
,
705 skb_arr_rq2_len
, cqe
);
706 if (unlikely(!skb
)) {
707 netif_err(port
, rx_err
, dev
,
711 ehea_fill_skb(dev
, skb
, cqe
, pr
);
715 skb
= get_skb_by_index(skb_arr_rq3
,
716 skb_arr_rq3_len
, cqe
);
717 if (unlikely(!skb
)) {
718 netif_err(port
, rx_err
, dev
,
722 ehea_fill_skb(dev
, skb
, cqe
, pr
);
726 processed_bytes
+= skb
->len
;
728 if (cqe
->status
& EHEA_CQE_VLAN_TAG_XTRACT
)
729 __vlan_hwaccel_put_tag(skb
, cqe
->vlan_tag
);
731 napi_gro_receive(&pr
->napi
, skb
);
733 pr
->p_stats
.poll_receive_errors
++;
734 port_reset
= ehea_treat_poll_error(pr
, rq
, cqe
,
740 cqe
= ehea_poll_rq1(qp
, &wqe_index
);
743 pr
->rx_packets
+= processed
;
744 pr
->rx_bytes
+= processed_bytes
;
746 ehea_refill_rq1(pr
, last_wqe_index
, processed_rq1
);
747 ehea_refill_rq2(pr
, processed_rq2
);
748 ehea_refill_rq3(pr
, processed_rq3
);
753 #define SWQE_RESTART_CHECK 0xdeadbeaff00d0000ull
755 static void reset_sq_restart_flag(struct ehea_port
*port
)
759 for (i
= 0; i
< port
->num_def_qps
; i
++) {
760 struct ehea_port_res
*pr
= &port
->port_res
[i
];
761 pr
->sq_restart_flag
= 0;
763 wake_up(&port
->restart_wq
);
766 static void check_sqs(struct ehea_port
*port
)
768 struct ehea_swqe
*swqe
;
772 for (i
= 0; i
< port
->num_def_qps
; i
++) {
773 struct ehea_port_res
*pr
= &port
->port_res
[i
];
776 swqe
= ehea_get_swqe(pr
->qp
, &swqe_index
);
777 memset(swqe
, 0, SWQE_HEADER_SIZE
);
778 atomic_dec(&pr
->swqe_avail
);
780 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
781 swqe
->wr_id
= SWQE_RESTART_CHECK
;
782 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
783 swqe
->tx_control
|= EHEA_SWQE_IMM_DATA_PRESENT
;
784 swqe
->immediate_data_length
= 80;
786 ehea_post_swqe(pr
->qp
, swqe
);
788 ret
= wait_event_timeout(port
->restart_wq
,
789 pr
->sq_restart_flag
== 0,
790 msecs_to_jiffies(100));
793 pr_err("HW/SW queues out of sync\n");
794 ehea_schedule_port_reset(pr
->port
);
801 static struct ehea_cqe
*ehea_proc_cqes(struct ehea_port_res
*pr
, int my_quota
)
804 struct ehea_cq
*send_cq
= pr
->send_cq
;
805 struct ehea_cqe
*cqe
;
806 int quota
= my_quota
;
810 struct netdev_queue
*txq
= netdev_get_tx_queue(pr
->port
->netdev
,
811 pr
- &pr
->port
->port_res
[0]);
813 cqe
= ehea_poll_cq(send_cq
);
814 while (cqe
&& (quota
> 0)) {
815 ehea_inc_cq(send_cq
);
820 if (cqe
->wr_id
== SWQE_RESTART_CHECK
) {
821 pr
->sq_restart_flag
= 1;
826 if (cqe
->status
& EHEA_CQE_STAT_ERR_MASK
) {
827 pr_err("Bad send completion status=0x%04X\n",
830 if (netif_msg_tx_err(pr
->port
))
831 ehea_dump(cqe
, sizeof(*cqe
), "Send CQE");
833 if (cqe
->status
& EHEA_CQE_STAT_RESET_MASK
) {
834 pr_err("Resetting port\n");
835 ehea_schedule_port_reset(pr
->port
);
840 if (netif_msg_tx_done(pr
->port
))
841 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
843 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE
, cqe
->wr_id
)
844 == EHEA_SWQE2_TYPE
)) {
846 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, cqe
->wr_id
);
847 skb
= pr
->sq_skba
.arr
[index
];
849 pr
->sq_skba
.arr
[index
] = NULL
;
852 swqe_av
+= EHEA_BMASK_GET(EHEA_WR_ID_REFILL
, cqe
->wr_id
);
855 cqe
= ehea_poll_cq(send_cq
);
858 ehea_update_feca(send_cq
, cqe_counter
);
859 atomic_add(swqe_av
, &pr
->swqe_avail
);
861 if (unlikely(netif_tx_queue_stopped(txq
) &&
862 (atomic_read(&pr
->swqe_avail
) >= pr
->swqe_refill_th
))) {
863 __netif_tx_lock(txq
, smp_processor_id());
864 if (netif_tx_queue_stopped(txq
) &&
865 (atomic_read(&pr
->swqe_avail
) >= pr
->swqe_refill_th
))
866 netif_tx_wake_queue(txq
);
867 __netif_tx_unlock(txq
);
870 wake_up(&pr
->port
->swqe_avail_wq
);
875 #define EHEA_POLL_MAX_CQES 65535
877 static int ehea_poll(struct napi_struct
*napi
, int budget
)
879 struct ehea_port_res
*pr
= container_of(napi
, struct ehea_port_res
,
881 struct net_device
*dev
= pr
->port
->netdev
;
882 struct ehea_cqe
*cqe
;
883 struct ehea_cqe
*cqe_skb
= NULL
;
887 cqe_skb
= ehea_proc_cqes(pr
, EHEA_POLL_MAX_CQES
);
888 rx
+= ehea_proc_rwqes(dev
, pr
, budget
- rx
);
890 while (rx
!= budget
) {
892 ehea_reset_cq_ep(pr
->recv_cq
);
893 ehea_reset_cq_ep(pr
->send_cq
);
894 ehea_reset_cq_n1(pr
->recv_cq
);
895 ehea_reset_cq_n1(pr
->send_cq
);
897 cqe
= ehea_poll_rq1(pr
->qp
, &wqe_index
);
898 cqe_skb
= ehea_poll_cq(pr
->send_cq
);
900 if (!cqe
&& !cqe_skb
)
903 if (!napi_reschedule(napi
))
906 cqe_skb
= ehea_proc_cqes(pr
, EHEA_POLL_MAX_CQES
);
907 rx
+= ehea_proc_rwqes(dev
, pr
, budget
- rx
);
913 #ifdef CONFIG_NET_POLL_CONTROLLER
914 static void ehea_netpoll(struct net_device
*dev
)
916 struct ehea_port
*port
= netdev_priv(dev
);
919 for (i
= 0; i
< port
->num_def_qps
; i
++)
920 napi_schedule(&port
->port_res
[i
].napi
);
924 static irqreturn_t
ehea_recv_irq_handler(int irq
, void *param
)
926 struct ehea_port_res
*pr
= param
;
928 napi_schedule(&pr
->napi
);
933 static irqreturn_t
ehea_qp_aff_irq_handler(int irq
, void *param
)
935 struct ehea_port
*port
= param
;
936 struct ehea_eqe
*eqe
;
939 u64 resource_type
, aer
, aerr
;
942 eqe
= ehea_poll_eq(port
->qp_eq
);
945 qp_token
= EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN
, eqe
->entry
);
946 pr_err("QP aff_err: entry=0x%llx, token=0x%x\n",
947 eqe
->entry
, qp_token
);
949 qp
= port
->port_res
[qp_token
].qp
;
951 resource_type
= ehea_error_data(port
->adapter
, qp
->fw_handle
,
954 if (resource_type
== EHEA_AER_RESTYPE_QP
) {
955 if ((aer
& EHEA_AER_RESET_MASK
) ||
956 (aerr
& EHEA_AERR_RESET_MASK
))
959 reset_port
= 1; /* Reset in case of CQ or EQ error */
961 eqe
= ehea_poll_eq(port
->qp_eq
);
965 pr_err("Resetting port\n");
966 ehea_schedule_port_reset(port
);
972 static struct ehea_port
*ehea_get_port(struct ehea_adapter
*adapter
,
977 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
978 if (adapter
->port
[i
])
979 if (adapter
->port
[i
]->logical_port_id
== logical_port
)
980 return adapter
->port
[i
];
984 int ehea_sense_port_attr(struct ehea_port
*port
)
988 struct hcp_ehea_port_cb0
*cb0
;
990 /* may be called via ehea_neq_tasklet() */
991 cb0
= (void *)get_zeroed_page(GFP_ATOMIC
);
993 pr_err("no mem for cb0\n");
998 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
999 port
->logical_port_id
, H_PORT_CB0
,
1000 EHEA_BMASK_SET(H_PORT_CB0_ALL
, 0xFFFF),
1002 if (hret
!= H_SUCCESS
) {
1008 port
->mac_addr
= cb0
->port_mac_addr
<< 16;
1010 if (!is_valid_ether_addr((u8
*)&port
->mac_addr
)) {
1011 ret
= -EADDRNOTAVAIL
;
1016 switch (cb0
->port_speed
) {
1018 port
->port_speed
= EHEA_SPEED_10M
;
1019 port
->full_duplex
= 0;
1022 port
->port_speed
= EHEA_SPEED_10M
;
1023 port
->full_duplex
= 1;
1025 case H_SPEED_100M_H
:
1026 port
->port_speed
= EHEA_SPEED_100M
;
1027 port
->full_duplex
= 0;
1029 case H_SPEED_100M_F
:
1030 port
->port_speed
= EHEA_SPEED_100M
;
1031 port
->full_duplex
= 1;
1034 port
->port_speed
= EHEA_SPEED_1G
;
1035 port
->full_duplex
= 1;
1038 port
->port_speed
= EHEA_SPEED_10G
;
1039 port
->full_duplex
= 1;
1042 port
->port_speed
= 0;
1043 port
->full_duplex
= 0;
1048 port
->num_mcs
= cb0
->num_default_qps
;
1050 /* Number of default QPs */
1052 port
->num_def_qps
= cb0
->num_default_qps
;
1054 port
->num_def_qps
= 1;
1056 if (!port
->num_def_qps
) {
1063 if (ret
|| netif_msg_probe(port
))
1064 ehea_dump(cb0
, sizeof(*cb0
), "ehea_sense_port_attr");
1065 free_page((unsigned long)cb0
);
1070 int ehea_set_portspeed(struct ehea_port
*port
, u32 port_speed
)
1072 struct hcp_ehea_port_cb4
*cb4
;
1076 cb4
= (void *)get_zeroed_page(GFP_KERNEL
);
1078 pr_err("no mem for cb4\n");
1083 cb4
->port_speed
= port_speed
;
1085 netif_carrier_off(port
->netdev
);
1087 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1088 port
->logical_port_id
,
1089 H_PORT_CB4
, H_PORT_CB4_SPEED
, cb4
);
1090 if (hret
== H_SUCCESS
) {
1091 port
->autoneg
= port_speed
== EHEA_SPEED_AUTONEG
? 1 : 0;
1093 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
1094 port
->logical_port_id
,
1095 H_PORT_CB4
, H_PORT_CB4_SPEED
,
1097 if (hret
== H_SUCCESS
) {
1098 switch (cb4
->port_speed
) {
1100 port
->port_speed
= EHEA_SPEED_10M
;
1101 port
->full_duplex
= 0;
1104 port
->port_speed
= EHEA_SPEED_10M
;
1105 port
->full_duplex
= 1;
1107 case H_SPEED_100M_H
:
1108 port
->port_speed
= EHEA_SPEED_100M
;
1109 port
->full_duplex
= 0;
1111 case H_SPEED_100M_F
:
1112 port
->port_speed
= EHEA_SPEED_100M
;
1113 port
->full_duplex
= 1;
1116 port
->port_speed
= EHEA_SPEED_1G
;
1117 port
->full_duplex
= 1;
1120 port
->port_speed
= EHEA_SPEED_10G
;
1121 port
->full_duplex
= 1;
1124 port
->port_speed
= 0;
1125 port
->full_duplex
= 0;
1129 pr_err("Failed sensing port speed\n");
1133 if (hret
== H_AUTHORITY
) {
1134 pr_info("Hypervisor denied setting port speed\n");
1138 pr_err("Failed setting port speed\n");
1141 if (!prop_carrier_state
|| (port
->phy_link
== EHEA_PHY_LINK_UP
))
1142 netif_carrier_on(port
->netdev
);
1144 free_page((unsigned long)cb4
);
1149 static void ehea_parse_eqe(struct ehea_adapter
*adapter
, u64 eqe
)
1154 struct ehea_port
*port
;
1155 struct net_device
*dev
;
1157 ec
= EHEA_BMASK_GET(NEQE_EVENT_CODE
, eqe
);
1158 portnum
= EHEA_BMASK_GET(NEQE_PORTNUM
, eqe
);
1159 port
= ehea_get_port(adapter
, portnum
);
1163 case EHEA_EC_PORTSTATE_CHG
: /* port state change */
1166 netdev_err(dev
, "unknown portnum %x\n", portnum
);
1170 if (EHEA_BMASK_GET(NEQE_PORT_UP
, eqe
)) {
1171 if (!netif_carrier_ok(dev
)) {
1172 ret
= ehea_sense_port_attr(port
);
1174 netdev_err(dev
, "failed resensing port attributes\n");
1178 netif_info(port
, link
, dev
,
1179 "Logical port up: %dMbps %s Duplex\n",
1181 port
->full_duplex
== 1 ?
1184 netif_carrier_on(dev
);
1185 netif_wake_queue(dev
);
1188 if (netif_carrier_ok(dev
)) {
1189 netif_info(port
, link
, dev
,
1190 "Logical port down\n");
1191 netif_carrier_off(dev
);
1192 netif_tx_disable(dev
);
1195 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP
, eqe
)) {
1196 port
->phy_link
= EHEA_PHY_LINK_UP
;
1197 netif_info(port
, link
, dev
,
1198 "Physical port up\n");
1199 if (prop_carrier_state
)
1200 netif_carrier_on(dev
);
1202 port
->phy_link
= EHEA_PHY_LINK_DOWN
;
1203 netif_info(port
, link
, dev
,
1204 "Physical port down\n");
1205 if (prop_carrier_state
)
1206 netif_carrier_off(dev
);
1209 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY
, eqe
))
1211 "External switch port is primary port\n");
1214 "External switch port is backup port\n");
1217 case EHEA_EC_ADAPTER_MALFUNC
:
1218 netdev_err(dev
, "Adapter malfunction\n");
1220 case EHEA_EC_PORT_MALFUNC
:
1221 netdev_info(dev
, "Port malfunction\n");
1222 netif_carrier_off(dev
);
1223 netif_tx_disable(dev
);
1226 netdev_err(dev
, "unknown event code %x, eqe=0x%llX\n", ec
, eqe
);
1231 static void ehea_neq_tasklet(unsigned long data
)
1233 struct ehea_adapter
*adapter
= (struct ehea_adapter
*)data
;
1234 struct ehea_eqe
*eqe
;
1237 eqe
= ehea_poll_eq(adapter
->neq
);
1238 pr_debug("eqe=%p\n", eqe
);
1241 pr_debug("*eqe=%lx\n", (unsigned long) eqe
->entry
);
1242 ehea_parse_eqe(adapter
, eqe
->entry
);
1243 eqe
= ehea_poll_eq(adapter
->neq
);
1244 pr_debug("next eqe=%p\n", eqe
);
1247 event_mask
= EHEA_BMASK_SET(NELR_PORTSTATE_CHG
, 1)
1248 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC
, 1)
1249 | EHEA_BMASK_SET(NELR_PORT_MALFUNC
, 1);
1251 ehea_h_reset_events(adapter
->handle
,
1252 adapter
->neq
->fw_handle
, event_mask
);
1255 static irqreturn_t
ehea_interrupt_neq(int irq
, void *param
)
1257 struct ehea_adapter
*adapter
= param
;
1258 tasklet_hi_schedule(&adapter
->neq_tasklet
);
1263 static int ehea_fill_port_res(struct ehea_port_res
*pr
)
1266 struct ehea_qp_init_attr
*init_attr
= &pr
->qp
->init_attr
;
1268 ehea_init_fill_rq1(pr
, pr
->rq1_skba
.len
);
1270 ret
= ehea_refill_rq2(pr
, init_attr
->act_nr_rwqes_rq2
- 1);
1272 ret
|= ehea_refill_rq3(pr
, init_attr
->act_nr_rwqes_rq3
- 1);
1277 static int ehea_reg_interrupts(struct net_device
*dev
)
1279 struct ehea_port
*port
= netdev_priv(dev
);
1280 struct ehea_port_res
*pr
;
1284 snprintf(port
->int_aff_name
, EHEA_IRQ_NAME_SIZE
- 1, "%s-aff",
1287 ret
= ibmebus_request_irq(port
->qp_eq
->attr
.ist1
,
1288 ehea_qp_aff_irq_handler
,
1289 IRQF_DISABLED
, port
->int_aff_name
, port
);
1291 netdev_err(dev
, "failed registering irq for qp_aff_irq_handler:ist=%X\n",
1292 port
->qp_eq
->attr
.ist1
);
1296 netif_info(port
, ifup
, dev
,
1297 "irq_handle 0x%X for function qp_aff_irq_handler registered\n",
1298 port
->qp_eq
->attr
.ist1
);
1301 for (i
= 0; i
< port
->num_def_qps
; i
++) {
1302 pr
= &port
->port_res
[i
];
1303 snprintf(pr
->int_send_name
, EHEA_IRQ_NAME_SIZE
- 1,
1304 "%s-queue%d", dev
->name
, i
);
1305 ret
= ibmebus_request_irq(pr
->eq
->attr
.ist1
,
1306 ehea_recv_irq_handler
,
1307 IRQF_DISABLED
, pr
->int_send_name
,
1310 netdev_err(dev
, "failed registering irq for ehea_queue port_res_nr:%d, ist=%X\n",
1311 i
, pr
->eq
->attr
.ist1
);
1314 netif_info(port
, ifup
, dev
,
1315 "irq_handle 0x%X for function ehea_queue_int %d registered\n",
1316 pr
->eq
->attr
.ist1
, i
);
1324 u32 ist
= port
->port_res
[i
].eq
->attr
.ist1
;
1325 ibmebus_free_irq(ist
, &port
->port_res
[i
]);
1329 ibmebus_free_irq(port
->qp_eq
->attr
.ist1
, port
);
1330 i
= port
->num_def_qps
;
1336 static void ehea_free_interrupts(struct net_device
*dev
)
1338 struct ehea_port
*port
= netdev_priv(dev
);
1339 struct ehea_port_res
*pr
;
1344 for (i
= 0; i
< port
->num_def_qps
; i
++) {
1345 pr
= &port
->port_res
[i
];
1346 ibmebus_free_irq(pr
->eq
->attr
.ist1
, pr
);
1347 netif_info(port
, intr
, dev
,
1348 "free send irq for res %d with handle 0x%X\n",
1349 i
, pr
->eq
->attr
.ist1
);
1352 /* associated events */
1353 ibmebus_free_irq(port
->qp_eq
->attr
.ist1
, port
);
1354 netif_info(port
, intr
, dev
,
1355 "associated event interrupt for handle 0x%X freed\n",
1356 port
->qp_eq
->attr
.ist1
);
1359 static int ehea_configure_port(struct ehea_port
*port
)
1363 struct hcp_ehea_port_cb0
*cb0
;
1366 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
1370 cb0
->port_rc
= EHEA_BMASK_SET(PXLY_RC_VALID
, 1)
1371 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM
, 1)
1372 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM
, 1)
1373 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT
, 1)
1374 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER
,
1375 PXLY_RC_VLAN_FILTER
)
1376 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME
, 1);
1378 for (i
= 0; i
< port
->num_mcs
; i
++)
1380 cb0
->default_qpn_arr
[i
] =
1381 port
->port_res
[i
].qp
->init_attr
.qp_nr
;
1383 cb0
->default_qpn_arr
[i
] =
1384 port
->port_res
[0].qp
->init_attr
.qp_nr
;
1386 if (netif_msg_ifup(port
))
1387 ehea_dump(cb0
, sizeof(*cb0
), "ehea_configure_port");
1389 mask
= EHEA_BMASK_SET(H_PORT_CB0_PRC
, 1)
1390 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY
, 1);
1392 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1393 port
->logical_port_id
,
1394 H_PORT_CB0
, mask
, cb0
);
1396 if (hret
!= H_SUCCESS
)
1402 free_page((unsigned long)cb0
);
1407 int ehea_gen_smrs(struct ehea_port_res
*pr
)
1410 struct ehea_adapter
*adapter
= pr
->port
->adapter
;
1412 ret
= ehea_gen_smr(adapter
, &adapter
->mr
, &pr
->send_mr
);
1416 ret
= ehea_gen_smr(adapter
, &adapter
->mr
, &pr
->recv_mr
);
1423 ehea_rem_mr(&pr
->send_mr
);
1425 pr_err("Generating SMRS failed\n");
1429 int ehea_rem_smrs(struct ehea_port_res
*pr
)
1431 if ((ehea_rem_mr(&pr
->send_mr
)) ||
1432 (ehea_rem_mr(&pr
->recv_mr
)))
1438 static int ehea_init_q_skba(struct ehea_q_skb_arr
*q_skba
, int max_q_entries
)
1440 int arr_size
= sizeof(void *) * max_q_entries
;
1442 q_skba
->arr
= vzalloc(arr_size
);
1446 q_skba
->len
= max_q_entries
;
1448 q_skba
->os_skbs
= 0;
1453 static int ehea_init_port_res(struct ehea_port
*port
, struct ehea_port_res
*pr
,
1454 struct port_res_cfg
*pr_cfg
, int queue_token
)
1456 struct ehea_adapter
*adapter
= port
->adapter
;
1457 enum ehea_eq_type eq_type
= EHEA_EQ
;
1458 struct ehea_qp_init_attr
*init_attr
= NULL
;
1460 u64 tx_bytes
, rx_bytes
, tx_packets
, rx_packets
;
1462 tx_bytes
= pr
->tx_bytes
;
1463 tx_packets
= pr
->tx_packets
;
1464 rx_bytes
= pr
->rx_bytes
;
1465 rx_packets
= pr
->rx_packets
;
1467 memset(pr
, 0, sizeof(struct ehea_port_res
));
1469 pr
->tx_bytes
= rx_bytes
;
1470 pr
->tx_packets
= tx_packets
;
1471 pr
->rx_bytes
= rx_bytes
;
1472 pr
->rx_packets
= rx_packets
;
1476 pr
->eq
= ehea_create_eq(adapter
, eq_type
, EHEA_MAX_ENTRIES_EQ
, 0);
1478 pr_err("create_eq failed (eq)\n");
1482 pr
->recv_cq
= ehea_create_cq(adapter
, pr_cfg
->max_entries_rcq
,
1484 port
->logical_port_id
);
1486 pr_err("create_cq failed (cq_recv)\n");
1490 pr
->send_cq
= ehea_create_cq(adapter
, pr_cfg
->max_entries_scq
,
1492 port
->logical_port_id
);
1494 pr_err("create_cq failed (cq_send)\n");
1498 if (netif_msg_ifup(port
))
1499 pr_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d\n",
1500 pr
->send_cq
->attr
.act_nr_of_cqes
,
1501 pr
->recv_cq
->attr
.act_nr_of_cqes
);
1503 init_attr
= kzalloc(sizeof(*init_attr
), GFP_KERNEL
);
1506 pr_err("no mem for ehea_qp_init_attr\n");
1510 init_attr
->low_lat_rq1
= 1;
1511 init_attr
->signalingtype
= 1; /* generate CQE if specified in WQE */
1512 init_attr
->rq_count
= 3;
1513 init_attr
->qp_token
= queue_token
;
1514 init_attr
->max_nr_send_wqes
= pr_cfg
->max_entries_sq
;
1515 init_attr
->max_nr_rwqes_rq1
= pr_cfg
->max_entries_rq1
;
1516 init_attr
->max_nr_rwqes_rq2
= pr_cfg
->max_entries_rq2
;
1517 init_attr
->max_nr_rwqes_rq3
= pr_cfg
->max_entries_rq3
;
1518 init_attr
->wqe_size_enc_sq
= EHEA_SG_SQ
;
1519 init_attr
->wqe_size_enc_rq1
= EHEA_SG_RQ1
;
1520 init_attr
->wqe_size_enc_rq2
= EHEA_SG_RQ2
;
1521 init_attr
->wqe_size_enc_rq3
= EHEA_SG_RQ3
;
1522 init_attr
->rq2_threshold
= EHEA_RQ2_THRESHOLD
;
1523 init_attr
->rq3_threshold
= EHEA_RQ3_THRESHOLD
;
1524 init_attr
->port_nr
= port
->logical_port_id
;
1525 init_attr
->send_cq_handle
= pr
->send_cq
->fw_handle
;
1526 init_attr
->recv_cq_handle
= pr
->recv_cq
->fw_handle
;
1527 init_attr
->aff_eq_handle
= port
->qp_eq
->fw_handle
;
1529 pr
->qp
= ehea_create_qp(adapter
, adapter
->pd
, init_attr
);
1531 pr_err("create_qp failed\n");
1536 if (netif_msg_ifup(port
))
1537 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",
1539 init_attr
->act_nr_send_wqes
,
1540 init_attr
->act_nr_rwqes_rq1
,
1541 init_attr
->act_nr_rwqes_rq2
,
1542 init_attr
->act_nr_rwqes_rq3
);
1544 pr
->sq_skba_size
= init_attr
->act_nr_send_wqes
+ 1;
1546 ret
= ehea_init_q_skba(&pr
->sq_skba
, pr
->sq_skba_size
);
1547 ret
|= ehea_init_q_skba(&pr
->rq1_skba
, init_attr
->act_nr_rwqes_rq1
+ 1);
1548 ret
|= ehea_init_q_skba(&pr
->rq2_skba
, init_attr
->act_nr_rwqes_rq2
+ 1);
1549 ret
|= ehea_init_q_skba(&pr
->rq3_skba
, init_attr
->act_nr_rwqes_rq3
+ 1);
1553 pr
->swqe_refill_th
= init_attr
->act_nr_send_wqes
/ 10;
1554 if (ehea_gen_smrs(pr
) != 0) {
1559 atomic_set(&pr
->swqe_avail
, init_attr
->act_nr_send_wqes
- 1);
1563 netif_napi_add(pr
->port
->netdev
, &pr
->napi
, ehea_poll
, 64);
1570 vfree(pr
->sq_skba
.arr
);
1571 vfree(pr
->rq1_skba
.arr
);
1572 vfree(pr
->rq2_skba
.arr
);
1573 vfree(pr
->rq3_skba
.arr
);
1574 ehea_destroy_qp(pr
->qp
);
1575 ehea_destroy_cq(pr
->send_cq
);
1576 ehea_destroy_cq(pr
->recv_cq
);
1577 ehea_destroy_eq(pr
->eq
);
1582 static int ehea_clean_portres(struct ehea_port
*port
, struct ehea_port_res
*pr
)
1587 netif_napi_del(&pr
->napi
);
1589 ret
= ehea_destroy_qp(pr
->qp
);
1592 ehea_destroy_cq(pr
->send_cq
);
1593 ehea_destroy_cq(pr
->recv_cq
);
1594 ehea_destroy_eq(pr
->eq
);
1596 for (i
= 0; i
< pr
->rq1_skba
.len
; i
++)
1597 if (pr
->rq1_skba
.arr
[i
])
1598 dev_kfree_skb(pr
->rq1_skba
.arr
[i
]);
1600 for (i
= 0; i
< pr
->rq2_skba
.len
; i
++)
1601 if (pr
->rq2_skba
.arr
[i
])
1602 dev_kfree_skb(pr
->rq2_skba
.arr
[i
]);
1604 for (i
= 0; i
< pr
->rq3_skba
.len
; i
++)
1605 if (pr
->rq3_skba
.arr
[i
])
1606 dev_kfree_skb(pr
->rq3_skba
.arr
[i
]);
1608 for (i
= 0; i
< pr
->sq_skba
.len
; i
++)
1609 if (pr
->sq_skba
.arr
[i
])
1610 dev_kfree_skb(pr
->sq_skba
.arr
[i
]);
1612 vfree(pr
->rq1_skba
.arr
);
1613 vfree(pr
->rq2_skba
.arr
);
1614 vfree(pr
->rq3_skba
.arr
);
1615 vfree(pr
->sq_skba
.arr
);
1616 ret
= ehea_rem_smrs(pr
);
1621 static void write_swqe2_immediate(struct sk_buff
*skb
, struct ehea_swqe
*swqe
,
1624 int skb_data_size
= skb_headlen(skb
);
1625 u8
*imm_data
= &swqe
->u
.immdata_desc
.immediate_data
[0];
1626 struct ehea_vsgentry
*sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1627 unsigned int immediate_len
= SWQE2_MAX_IMM
;
1629 swqe
->descriptors
= 0;
1631 if (skb_is_gso(skb
)) {
1632 swqe
->tx_control
|= EHEA_SWQE_TSO
;
1633 swqe
->mss
= skb_shinfo(skb
)->gso_size
;
1635 * For TSO packets we only copy the headers into the
1638 immediate_len
= ETH_HLEN
+ ip_hdrlen(skb
) + tcp_hdrlen(skb
);
1641 if (skb_is_gso(skb
) || skb_data_size
>= SWQE2_MAX_IMM
) {
1642 skb_copy_from_linear_data(skb
, imm_data
, immediate_len
);
1643 swqe
->immediate_data_length
= immediate_len
;
1645 if (skb_data_size
> immediate_len
) {
1646 sg1entry
->l_key
= lkey
;
1647 sg1entry
->len
= skb_data_size
- immediate_len
;
1649 ehea_map_vaddr(skb
->data
+ immediate_len
);
1650 swqe
->descriptors
++;
1653 skb_copy_from_linear_data(skb
, imm_data
, skb_data_size
);
1654 swqe
->immediate_data_length
= skb_data_size
;
1658 static inline void write_swqe2_data(struct sk_buff
*skb
, struct net_device
*dev
,
1659 struct ehea_swqe
*swqe
, u32 lkey
)
1661 struct ehea_vsgentry
*sg_list
, *sg1entry
, *sgentry
;
1663 int nfrags
, sg1entry_contains_frag_data
, i
;
1665 nfrags
= skb_shinfo(skb
)->nr_frags
;
1666 sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1667 sg_list
= (struct ehea_vsgentry
*)&swqe
->u
.immdata_desc
.sg_list
;
1668 sg1entry_contains_frag_data
= 0;
1670 write_swqe2_immediate(skb
, swqe
, lkey
);
1672 /* write descriptors */
1674 if (swqe
->descriptors
== 0) {
1675 /* sg1entry not yet used */
1676 frag
= &skb_shinfo(skb
)->frags
[0];
1678 /* copy sg1entry data */
1679 sg1entry
->l_key
= lkey
;
1680 sg1entry
->len
= skb_frag_size(frag
);
1682 ehea_map_vaddr(skb_frag_address(frag
));
1683 swqe
->descriptors
++;
1684 sg1entry_contains_frag_data
= 1;
1687 for (i
= sg1entry_contains_frag_data
; i
< nfrags
; i
++) {
1689 frag
= &skb_shinfo(skb
)->frags
[i
];
1690 sgentry
= &sg_list
[i
- sg1entry_contains_frag_data
];
1692 sgentry
->l_key
= lkey
;
1693 sgentry
->len
= skb_frag_size(frag
);
1694 sgentry
->vaddr
= ehea_map_vaddr(skb_frag_address(frag
));
1695 swqe
->descriptors
++;
1700 static int ehea_broadcast_reg_helper(struct ehea_port
*port
, u32 hcallid
)
1706 /* De/Register untagged packets */
1707 reg_type
= EHEA_BCMC_BROADCAST
| EHEA_BCMC_UNTAGGED
;
1708 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1709 port
->logical_port_id
,
1710 reg_type
, port
->mac_addr
, 0, hcallid
);
1711 if (hret
!= H_SUCCESS
) {
1712 pr_err("%sregistering bc address failed (tagged)\n",
1713 hcallid
== H_REG_BCMC
? "" : "de");
1718 /* De/Register VLAN packets */
1719 reg_type
= EHEA_BCMC_BROADCAST
| EHEA_BCMC_VLANID_ALL
;
1720 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1721 port
->logical_port_id
,
1722 reg_type
, port
->mac_addr
, 0, hcallid
);
1723 if (hret
!= H_SUCCESS
) {
1724 pr_err("%sregistering bc address failed (vlan)\n",
1725 hcallid
== H_REG_BCMC
? "" : "de");
1732 static int ehea_set_mac_addr(struct net_device
*dev
, void *sa
)
1734 struct ehea_port
*port
= netdev_priv(dev
);
1735 struct sockaddr
*mac_addr
= sa
;
1736 struct hcp_ehea_port_cb0
*cb0
;
1740 if (!is_valid_ether_addr(mac_addr
->sa_data
)) {
1741 ret
= -EADDRNOTAVAIL
;
1745 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
1747 pr_err("no mem for cb0\n");
1752 memcpy(&(cb0
->port_mac_addr
), &(mac_addr
->sa_data
[0]), ETH_ALEN
);
1754 cb0
->port_mac_addr
= cb0
->port_mac_addr
>> 16;
1756 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1757 port
->logical_port_id
, H_PORT_CB0
,
1758 EHEA_BMASK_SET(H_PORT_CB0_MAC
, 1), cb0
);
1759 if (hret
!= H_SUCCESS
) {
1764 memcpy(dev
->dev_addr
, mac_addr
->sa_data
, dev
->addr_len
);
1766 /* Deregister old MAC in pHYP */
1767 if (port
->state
== EHEA_PORT_UP
) {
1768 ret
= ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
1773 port
->mac_addr
= cb0
->port_mac_addr
<< 16;
1775 /* Register new MAC in pHYP */
1776 if (port
->state
== EHEA_PORT_UP
) {
1777 ret
= ehea_broadcast_reg_helper(port
, H_REG_BCMC
);
1785 ehea_update_bcmc_registrations();
1787 free_page((unsigned long)cb0
);
1792 static void ehea_promiscuous_error(u64 hret
, int enable
)
1794 if (hret
== H_AUTHORITY
)
1795 pr_info("Hypervisor denied %sabling promiscuous mode\n",
1796 enable
== 1 ? "en" : "dis");
1798 pr_err("failed %sabling promiscuous mode\n",
1799 enable
== 1 ? "en" : "dis");
1802 static void ehea_promiscuous(struct net_device
*dev
, int enable
)
1804 struct ehea_port
*port
= netdev_priv(dev
);
1805 struct hcp_ehea_port_cb7
*cb7
;
1808 if (enable
== port
->promisc
)
1811 cb7
= (void *)get_zeroed_page(GFP_ATOMIC
);
1813 pr_err("no mem for cb7\n");
1817 /* Modify Pxs_DUCQPN in CB7 */
1818 cb7
->def_uc_qpn
= enable
== 1 ? port
->port_res
[0].qp
->fw_handle
: 0;
1820 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1821 port
->logical_port_id
,
1822 H_PORT_CB7
, H_PORT_CB7_DUCQPN
, cb7
);
1824 ehea_promiscuous_error(hret
, enable
);
1828 port
->promisc
= enable
;
1830 free_page((unsigned long)cb7
);
1833 static u64
ehea_multicast_reg_helper(struct ehea_port
*port
, u64 mc_mac_addr
,
1839 reg_type
= EHEA_BCMC_SCOPE_ALL
| EHEA_BCMC_MULTICAST
1840 | EHEA_BCMC_UNTAGGED
;
1842 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1843 port
->logical_port_id
,
1844 reg_type
, mc_mac_addr
, 0, hcallid
);
1848 reg_type
= EHEA_BCMC_SCOPE_ALL
| EHEA_BCMC_MULTICAST
1849 | EHEA_BCMC_VLANID_ALL
;
1851 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1852 port
->logical_port_id
,
1853 reg_type
, mc_mac_addr
, 0, hcallid
);
1858 static int ehea_drop_multicast_list(struct net_device
*dev
)
1860 struct ehea_port
*port
= netdev_priv(dev
);
1861 struct ehea_mc_list
*mc_entry
= port
->mc_list
;
1862 struct list_head
*pos
;
1863 struct list_head
*temp
;
1867 list_for_each_safe(pos
, temp
, &(port
->mc_list
->list
)) {
1868 mc_entry
= list_entry(pos
, struct ehea_mc_list
, list
);
1870 hret
= ehea_multicast_reg_helper(port
, mc_entry
->macaddr
,
1873 pr_err("failed deregistering mcast MAC\n");
1883 static void ehea_allmulti(struct net_device
*dev
, int enable
)
1885 struct ehea_port
*port
= netdev_priv(dev
);
1888 if (!port
->allmulti
) {
1890 /* Enable ALLMULTI */
1891 ehea_drop_multicast_list(dev
);
1892 hret
= ehea_multicast_reg_helper(port
, 0, H_REG_BCMC
);
1897 "failed enabling IFF_ALLMULTI\n");
1901 /* Disable ALLMULTI */
1902 hret
= ehea_multicast_reg_helper(port
, 0, H_DEREG_BCMC
);
1907 "failed disabling IFF_ALLMULTI\n");
1911 static void ehea_add_multicast_entry(struct ehea_port
*port
, u8
*mc_mac_addr
)
1913 struct ehea_mc_list
*ehea_mcl_entry
;
1916 ehea_mcl_entry
= kzalloc(sizeof(*ehea_mcl_entry
), GFP_ATOMIC
);
1917 if (!ehea_mcl_entry
) {
1918 pr_err("no mem for mcl_entry\n");
1922 INIT_LIST_HEAD(&ehea_mcl_entry
->list
);
1924 memcpy(&ehea_mcl_entry
->macaddr
, mc_mac_addr
, ETH_ALEN
);
1926 hret
= ehea_multicast_reg_helper(port
, ehea_mcl_entry
->macaddr
,
1929 list_add(&ehea_mcl_entry
->list
, &port
->mc_list
->list
);
1931 pr_err("failed registering mcast MAC\n");
1932 kfree(ehea_mcl_entry
);
1936 static void ehea_set_multicast_list(struct net_device
*dev
)
1938 struct ehea_port
*port
= netdev_priv(dev
);
1939 struct netdev_hw_addr
*ha
;
1942 if (port
->promisc
) {
1943 ehea_promiscuous(dev
, 1);
1946 ehea_promiscuous(dev
, 0);
1948 if (dev
->flags
& IFF_ALLMULTI
) {
1949 ehea_allmulti(dev
, 1);
1952 ehea_allmulti(dev
, 0);
1954 if (!netdev_mc_empty(dev
)) {
1955 ret
= ehea_drop_multicast_list(dev
);
1957 /* Dropping the current multicast list failed.
1958 * Enabling ALL_MULTI is the best we can do.
1960 ehea_allmulti(dev
, 1);
1963 if (netdev_mc_count(dev
) > port
->adapter
->max_mc_mac
) {
1964 pr_info("Mcast registration limit reached (0x%llx). Use ALLMULTI!\n",
1965 port
->adapter
->max_mc_mac
);
1969 netdev_for_each_mc_addr(ha
, dev
)
1970 ehea_add_multicast_entry(port
, ha
->addr
);
1974 ehea_update_bcmc_registrations();
1977 static int ehea_change_mtu(struct net_device
*dev
, int new_mtu
)
1979 if ((new_mtu
< 68) || (new_mtu
> EHEA_MAX_PACKET_SIZE
))
1985 static void xmit_common(struct sk_buff
*skb
, struct ehea_swqe
*swqe
)
1987 swqe
->tx_control
|= EHEA_SWQE_IMM_DATA_PRESENT
| EHEA_SWQE_CRC
;
1989 if (skb
->protocol
!= htons(ETH_P_IP
))
1992 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
1993 swqe
->tx_control
|= EHEA_SWQE_IP_CHECKSUM
;
1995 swqe
->ip_start
= skb_network_offset(skb
);
1996 swqe
->ip_end
= swqe
->ip_start
+ ip_hdrlen(skb
) - 1;
1998 switch (ip_hdr(skb
)->protocol
) {
2000 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
2001 swqe
->tx_control
|= EHEA_SWQE_TCP_CHECKSUM
;
2003 swqe
->tcp_offset
= swqe
->ip_end
+ 1 +
2004 offsetof(struct udphdr
, check
);
2008 if (skb
->ip_summed
== CHECKSUM_PARTIAL
)
2009 swqe
->tx_control
|= EHEA_SWQE_TCP_CHECKSUM
;
2011 swqe
->tcp_offset
= swqe
->ip_end
+ 1 +
2012 offsetof(struct tcphdr
, check
);
2017 static void ehea_xmit2(struct sk_buff
*skb
, struct net_device
*dev
,
2018 struct ehea_swqe
*swqe
, u32 lkey
)
2020 swqe
->tx_control
|= EHEA_SWQE_DESCRIPTORS_PRESENT
;
2022 xmit_common(skb
, swqe
);
2024 write_swqe2_data(skb
, dev
, swqe
, lkey
);
2027 static void ehea_xmit3(struct sk_buff
*skb
, struct net_device
*dev
,
2028 struct ehea_swqe
*swqe
)
2030 u8
*imm_data
= &swqe
->u
.immdata_nodesc
.immediate_data
[0];
2032 xmit_common(skb
, swqe
);
2035 skb_copy_from_linear_data(skb
, imm_data
, skb
->len
);
2037 skb_copy_bits(skb
, 0, imm_data
, skb
->len
);
2039 swqe
->immediate_data_length
= skb
->len
;
2043 static int ehea_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
2045 struct ehea_port
*port
= netdev_priv(dev
);
2046 struct ehea_swqe
*swqe
;
2049 struct ehea_port_res
*pr
;
2050 struct netdev_queue
*txq
;
2052 pr
= &port
->port_res
[skb_get_queue_mapping(skb
)];
2053 txq
= netdev_get_tx_queue(dev
, skb_get_queue_mapping(skb
));
2055 swqe
= ehea_get_swqe(pr
->qp
, &swqe_index
);
2056 memset(swqe
, 0, SWQE_HEADER_SIZE
);
2057 atomic_dec(&pr
->swqe_avail
);
2059 if (vlan_tx_tag_present(skb
)) {
2060 swqe
->tx_control
|= EHEA_SWQE_VLAN_INSERT
;
2061 swqe
->vlan_tag
= vlan_tx_tag_get(skb
);
2065 pr
->tx_bytes
+= skb
->len
;
2067 if (skb
->len
<= SWQE3_MAX_IMM
) {
2068 u32 sig_iv
= port
->sig_comp_iv
;
2069 u32 swqe_num
= pr
->swqe_id_counter
;
2070 ehea_xmit3(skb
, dev
, swqe
);
2071 swqe
->wr_id
= EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, EHEA_SWQE3_TYPE
)
2072 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT
, swqe_num
);
2073 if (pr
->swqe_ll_count
>= (sig_iv
- 1)) {
2074 swqe
->wr_id
|= EHEA_BMASK_SET(EHEA_WR_ID_REFILL
,
2076 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
2077 pr
->swqe_ll_count
= 0;
2079 pr
->swqe_ll_count
+= 1;
2082 EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, EHEA_SWQE2_TYPE
)
2083 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT
, pr
->swqe_id_counter
)
2084 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL
, 1)
2085 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX
, pr
->sq_skba
.index
);
2086 pr
->sq_skba
.arr
[pr
->sq_skba
.index
] = skb
;
2088 pr
->sq_skba
.index
++;
2089 pr
->sq_skba
.index
&= (pr
->sq_skba
.len
- 1);
2091 lkey
= pr
->send_mr
.lkey
;
2092 ehea_xmit2(skb
, dev
, swqe
, lkey
);
2093 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
2095 pr
->swqe_id_counter
+= 1;
2097 netif_info(port
, tx_queued
, dev
,
2098 "post swqe on QP %d\n", pr
->qp
->init_attr
.qp_nr
);
2099 if (netif_msg_tx_queued(port
))
2100 ehea_dump(swqe
, 512, "swqe");
2102 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
2103 netif_tx_stop_queue(txq
);
2104 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
2107 ehea_post_swqe(pr
->qp
, swqe
);
2109 if (unlikely(atomic_read(&pr
->swqe_avail
) <= 1)) {
2110 pr
->p_stats
.queue_stopped
++;
2111 netif_tx_stop_queue(txq
);
2114 return NETDEV_TX_OK
;
2117 static int ehea_vlan_rx_add_vid(struct net_device
*dev
, unsigned short vid
)
2119 struct ehea_port
*port
= netdev_priv(dev
);
2120 struct ehea_adapter
*adapter
= port
->adapter
;
2121 struct hcp_ehea_port_cb1
*cb1
;
2126 cb1
= (void *)get_zeroed_page(GFP_KERNEL
);
2128 pr_err("no mem for cb1\n");
2133 hret
= ehea_h_query_ehea_port(adapter
->handle
, port
->logical_port_id
,
2134 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2135 if (hret
!= H_SUCCESS
) {
2136 pr_err("query_ehea_port failed\n");
2142 cb1
->vlan_filter
[index
] |= ((u64
)(0x8000000000000000 >> (vid
& 0x3F)));
2144 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2145 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2146 if (hret
!= H_SUCCESS
) {
2147 pr_err("modify_ehea_port failed\n");
2151 free_page((unsigned long)cb1
);
2155 static int ehea_vlan_rx_kill_vid(struct net_device
*dev
, unsigned short vid
)
2157 struct ehea_port
*port
= netdev_priv(dev
);
2158 struct ehea_adapter
*adapter
= port
->adapter
;
2159 struct hcp_ehea_port_cb1
*cb1
;
2164 cb1
= (void *)get_zeroed_page(GFP_KERNEL
);
2166 pr_err("no mem for cb1\n");
2171 hret
= ehea_h_query_ehea_port(adapter
->handle
, port
->logical_port_id
,
2172 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2173 if (hret
!= H_SUCCESS
) {
2174 pr_err("query_ehea_port failed\n");
2180 cb1
->vlan_filter
[index
] &= ~((u64
)(0x8000000000000000 >> (vid
& 0x3F)));
2182 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2183 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2184 if (hret
!= H_SUCCESS
) {
2185 pr_err("modify_ehea_port failed\n");
2189 free_page((unsigned long)cb1
);
2193 int ehea_activate_qp(struct ehea_adapter
*adapter
, struct ehea_qp
*qp
)
2199 struct hcp_modify_qp_cb0
*cb0
;
2201 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
2207 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2208 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2209 if (hret
!= H_SUCCESS
) {
2210 pr_err("query_ehea_qp failed (1)\n");
2214 cb0
->qp_ctl_reg
= H_QP_CR_STATE_INITIALIZED
;
2215 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2216 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2217 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2218 if (hret
!= H_SUCCESS
) {
2219 pr_err("modify_ehea_qp failed (1)\n");
2223 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2224 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2225 if (hret
!= H_SUCCESS
) {
2226 pr_err("query_ehea_qp failed (2)\n");
2230 cb0
->qp_ctl_reg
= H_QP_CR_ENABLED
| H_QP_CR_STATE_INITIALIZED
;
2231 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2232 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2233 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2234 if (hret
!= H_SUCCESS
) {
2235 pr_err("modify_ehea_qp failed (2)\n");
2239 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2240 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2241 if (hret
!= H_SUCCESS
) {
2242 pr_err("query_ehea_qp failed (3)\n");
2246 cb0
->qp_ctl_reg
= H_QP_CR_ENABLED
| H_QP_CR_STATE_RDY2SND
;
2247 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2248 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2249 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2250 if (hret
!= H_SUCCESS
) {
2251 pr_err("modify_ehea_qp failed (3)\n");
2255 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2256 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2257 if (hret
!= H_SUCCESS
) {
2258 pr_err("query_ehea_qp failed (4)\n");
2264 free_page((unsigned long)cb0
);
2268 static int ehea_port_res_setup(struct ehea_port
*port
, int def_qps
)
2271 struct port_res_cfg pr_cfg
, pr_cfg_small_rx
;
2272 enum ehea_eq_type eq_type
= EHEA_EQ
;
2274 port
->qp_eq
= ehea_create_eq(port
->adapter
, eq_type
,
2275 EHEA_MAX_ENTRIES_EQ
, 1);
2278 pr_err("ehea_create_eq failed (qp_eq)\n");
2282 pr_cfg
.max_entries_rcq
= rq1_entries
+ rq2_entries
+ rq3_entries
;
2283 pr_cfg
.max_entries_scq
= sq_entries
* 2;
2284 pr_cfg
.max_entries_sq
= sq_entries
;
2285 pr_cfg
.max_entries_rq1
= rq1_entries
;
2286 pr_cfg
.max_entries_rq2
= rq2_entries
;
2287 pr_cfg
.max_entries_rq3
= rq3_entries
;
2289 pr_cfg_small_rx
.max_entries_rcq
= 1;
2290 pr_cfg_small_rx
.max_entries_scq
= sq_entries
;
2291 pr_cfg_small_rx
.max_entries_sq
= sq_entries
;
2292 pr_cfg_small_rx
.max_entries_rq1
= 1;
2293 pr_cfg_small_rx
.max_entries_rq2
= 1;
2294 pr_cfg_small_rx
.max_entries_rq3
= 1;
2296 for (i
= 0; i
< def_qps
; i
++) {
2297 ret
= ehea_init_port_res(port
, &port
->port_res
[i
], &pr_cfg
, i
);
2301 for (i
= def_qps
; i
< def_qps
; i
++) {
2302 ret
= ehea_init_port_res(port
, &port
->port_res
[i
],
2303 &pr_cfg_small_rx
, i
);
2312 ehea_clean_portres(port
, &port
->port_res
[i
]);
2315 ehea_destroy_eq(port
->qp_eq
);
2319 static int ehea_clean_all_portres(struct ehea_port
*port
)
2324 for (i
= 0; i
< port
->num_def_qps
; i
++)
2325 ret
|= ehea_clean_portres(port
, &port
->port_res
[i
]);
2327 ret
|= ehea_destroy_eq(port
->qp_eq
);
2332 static void ehea_remove_adapter_mr(struct ehea_adapter
*adapter
)
2334 if (adapter
->active_ports
)
2337 ehea_rem_mr(&adapter
->mr
);
2340 static int ehea_add_adapter_mr(struct ehea_adapter
*adapter
)
2342 if (adapter
->active_ports
)
2345 return ehea_reg_kernel_mr(adapter
, &adapter
->mr
);
2348 static int ehea_up(struct net_device
*dev
)
2351 struct ehea_port
*port
= netdev_priv(dev
);
2353 if (port
->state
== EHEA_PORT_UP
)
2356 ret
= ehea_port_res_setup(port
, port
->num_def_qps
);
2358 netdev_err(dev
, "port_res_failed\n");
2362 /* Set default QP for this port */
2363 ret
= ehea_configure_port(port
);
2365 netdev_err(dev
, "ehea_configure_port failed. ret:%d\n", ret
);
2369 ret
= ehea_reg_interrupts(dev
);
2371 netdev_err(dev
, "reg_interrupts failed. ret:%d\n", ret
);
2375 for (i
= 0; i
< port
->num_def_qps
; i
++) {
2376 ret
= ehea_activate_qp(port
->adapter
, port
->port_res
[i
].qp
);
2378 netdev_err(dev
, "activate_qp failed\n");
2383 for (i
= 0; i
< port
->num_def_qps
; i
++) {
2384 ret
= ehea_fill_port_res(&port
->port_res
[i
]);
2386 netdev_err(dev
, "out_free_irqs\n");
2391 ret
= ehea_broadcast_reg_helper(port
, H_REG_BCMC
);
2397 port
->state
= EHEA_PORT_UP
;
2403 ehea_free_interrupts(dev
);
2406 ehea_clean_all_portres(port
);
2409 netdev_info(dev
, "Failed starting. ret=%i\n", ret
);
2411 ehea_update_bcmc_registrations();
2412 ehea_update_firmware_handles();
2417 static void port_napi_disable(struct ehea_port
*port
)
2421 for (i
= 0; i
< port
->num_def_qps
; i
++)
2422 napi_disable(&port
->port_res
[i
].napi
);
2425 static void port_napi_enable(struct ehea_port
*port
)
2429 for (i
= 0; i
< port
->num_def_qps
; i
++)
2430 napi_enable(&port
->port_res
[i
].napi
);
2433 static int ehea_open(struct net_device
*dev
)
2436 struct ehea_port
*port
= netdev_priv(dev
);
2438 mutex_lock(&port
->port_lock
);
2440 netif_info(port
, ifup
, dev
, "enabling port\n");
2444 port_napi_enable(port
);
2445 netif_tx_start_all_queues(dev
);
2448 mutex_unlock(&port
->port_lock
);
2449 schedule_delayed_work(&port
->stats_work
,
2450 round_jiffies_relative(msecs_to_jiffies(1000)));
2455 static int ehea_down(struct net_device
*dev
)
2458 struct ehea_port
*port
= netdev_priv(dev
);
2460 if (port
->state
== EHEA_PORT_DOWN
)
2463 ehea_drop_multicast_list(dev
);
2464 ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
2466 ehea_free_interrupts(dev
);
2468 port
->state
= EHEA_PORT_DOWN
;
2470 ehea_update_bcmc_registrations();
2472 ret
= ehea_clean_all_portres(port
);
2474 netdev_info(dev
, "Failed freeing resources. ret=%i\n", ret
);
2476 ehea_update_firmware_handles();
2481 static int ehea_stop(struct net_device
*dev
)
2484 struct ehea_port
*port
= netdev_priv(dev
);
2486 netif_info(port
, ifdown
, dev
, "disabling port\n");
2488 set_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
);
2489 cancel_work_sync(&port
->reset_task
);
2490 cancel_delayed_work_sync(&port
->stats_work
);
2491 mutex_lock(&port
->port_lock
);
2492 netif_tx_stop_all_queues(dev
);
2493 port_napi_disable(port
);
2494 ret
= ehea_down(dev
);
2495 mutex_unlock(&port
->port_lock
);
2496 clear_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
);
2500 static void ehea_purge_sq(struct ehea_qp
*orig_qp
)
2502 struct ehea_qp qp
= *orig_qp
;
2503 struct ehea_qp_init_attr
*init_attr
= &qp
.init_attr
;
2504 struct ehea_swqe
*swqe
;
2508 for (i
= 0; i
< init_attr
->act_nr_send_wqes
; i
++) {
2509 swqe
= ehea_get_swqe(&qp
, &wqe_index
);
2510 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
2514 static void ehea_flush_sq(struct ehea_port
*port
)
2518 for (i
= 0; i
< port
->num_def_qps
; i
++) {
2519 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2520 int swqe_max
= pr
->sq_skba_size
- 2 - pr
->swqe_ll_count
;
2523 ret
= wait_event_timeout(port
->swqe_avail_wq
,
2524 atomic_read(&pr
->swqe_avail
) >= swqe_max
,
2525 msecs_to_jiffies(100));
2528 pr_err("WARNING: sq not flushed completely\n");
2534 int ehea_stop_qps(struct net_device
*dev
)
2536 struct ehea_port
*port
= netdev_priv(dev
);
2537 struct ehea_adapter
*adapter
= port
->adapter
;
2538 struct hcp_modify_qp_cb0
*cb0
;
2546 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
2552 for (i
= 0; i
< (port
->num_def_qps
); i
++) {
2553 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2554 struct ehea_qp
*qp
= pr
->qp
;
2556 /* Purge send queue */
2559 /* Disable queue pair */
2560 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2561 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2563 if (hret
!= H_SUCCESS
) {
2564 pr_err("query_ehea_qp failed (1)\n");
2568 cb0
->qp_ctl_reg
= (cb0
->qp_ctl_reg
& H_QP_CR_RES_STATE
) << 8;
2569 cb0
->qp_ctl_reg
&= ~H_QP_CR_ENABLED
;
2571 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2572 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
,
2574 &dummy64
, &dummy16
, &dummy16
);
2575 if (hret
!= H_SUCCESS
) {
2576 pr_err("modify_ehea_qp failed (1)\n");
2580 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2581 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2583 if (hret
!= H_SUCCESS
) {
2584 pr_err("query_ehea_qp failed (2)\n");
2588 /* deregister shared memory regions */
2589 dret
= ehea_rem_smrs(pr
);
2591 pr_err("unreg shared memory region failed\n");
2598 free_page((unsigned long)cb0
);
2603 void ehea_update_rqs(struct ehea_qp
*orig_qp
, struct ehea_port_res
*pr
)
2605 struct ehea_qp qp
= *orig_qp
;
2606 struct ehea_qp_init_attr
*init_attr
= &qp
.init_attr
;
2607 struct ehea_rwqe
*rwqe
;
2608 struct sk_buff
**skba_rq2
= pr
->rq2_skba
.arr
;
2609 struct sk_buff
**skba_rq3
= pr
->rq3_skba
.arr
;
2610 struct sk_buff
*skb
;
2611 u32 lkey
= pr
->recv_mr
.lkey
;
2617 for (i
= 0; i
< init_attr
->act_nr_rwqes_rq2
+ 1; i
++) {
2618 rwqe
= ehea_get_next_rwqe(&qp
, 2);
2619 rwqe
->sg_list
[0].l_key
= lkey
;
2620 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, rwqe
->wr_id
);
2621 skb
= skba_rq2
[index
];
2623 rwqe
->sg_list
[0].vaddr
= ehea_map_vaddr(skb
->data
);
2626 for (i
= 0; i
< init_attr
->act_nr_rwqes_rq3
+ 1; i
++) {
2627 rwqe
= ehea_get_next_rwqe(&qp
, 3);
2628 rwqe
->sg_list
[0].l_key
= lkey
;
2629 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, rwqe
->wr_id
);
2630 skb
= skba_rq3
[index
];
2632 rwqe
->sg_list
[0].vaddr
= ehea_map_vaddr(skb
->data
);
2636 int ehea_restart_qps(struct net_device
*dev
)
2638 struct ehea_port
*port
= netdev_priv(dev
);
2639 struct ehea_adapter
*adapter
= port
->adapter
;
2643 struct hcp_modify_qp_cb0
*cb0
;
2648 cb0
= (void *)get_zeroed_page(GFP_KERNEL
);
2654 for (i
= 0; i
< (port
->num_def_qps
); i
++) {
2655 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2656 struct ehea_qp
*qp
= pr
->qp
;
2658 ret
= ehea_gen_smrs(pr
);
2660 netdev_err(dev
, "creation of shared memory regions failed\n");
2664 ehea_update_rqs(qp
, pr
);
2666 /* Enable queue pair */
2667 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2668 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2670 if (hret
!= H_SUCCESS
) {
2671 netdev_err(dev
, "query_ehea_qp failed (1)\n");
2675 cb0
->qp_ctl_reg
= (cb0
->qp_ctl_reg
& H_QP_CR_RES_STATE
) << 8;
2676 cb0
->qp_ctl_reg
|= H_QP_CR_ENABLED
;
2678 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2679 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
,
2681 &dummy64
, &dummy16
, &dummy16
);
2682 if (hret
!= H_SUCCESS
) {
2683 netdev_err(dev
, "modify_ehea_qp failed (1)\n");
2687 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2688 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2690 if (hret
!= H_SUCCESS
) {
2691 netdev_err(dev
, "query_ehea_qp failed (2)\n");
2695 /* refill entire queue */
2696 ehea_refill_rq1(pr
, pr
->rq1_skba
.index
, 0);
2697 ehea_refill_rq2(pr
, 0);
2698 ehea_refill_rq3(pr
, 0);
2701 free_page((unsigned long)cb0
);
2706 static void ehea_reset_port(struct work_struct
*work
)
2709 struct ehea_port
*port
=
2710 container_of(work
, struct ehea_port
, reset_task
);
2711 struct net_device
*dev
= port
->netdev
;
2713 mutex_lock(&dlpar_mem_lock
);
2715 mutex_lock(&port
->port_lock
);
2716 netif_tx_disable(dev
);
2718 port_napi_disable(port
);
2726 ehea_set_multicast_list(dev
);
2728 netif_info(port
, timer
, dev
, "reset successful\n");
2730 port_napi_enable(port
);
2732 netif_tx_wake_all_queues(dev
);
2734 mutex_unlock(&port
->port_lock
);
2735 mutex_unlock(&dlpar_mem_lock
);
2738 static void ehea_rereg_mrs(void)
2741 struct ehea_adapter
*adapter
;
2743 pr_info("LPAR memory changed - re-initializing driver\n");
2745 list_for_each_entry(adapter
, &adapter_list
, list
)
2746 if (adapter
->active_ports
) {
2747 /* Shutdown all ports */
2748 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++) {
2749 struct ehea_port
*port
= adapter
->port
[i
];
2750 struct net_device
*dev
;
2757 if (dev
->flags
& IFF_UP
) {
2758 mutex_lock(&port
->port_lock
);
2759 netif_tx_disable(dev
);
2760 ehea_flush_sq(port
);
2761 ret
= ehea_stop_qps(dev
);
2763 mutex_unlock(&port
->port_lock
);
2766 port_napi_disable(port
);
2767 mutex_unlock(&port
->port_lock
);
2769 reset_sq_restart_flag(port
);
2772 /* Unregister old memory region */
2773 ret
= ehea_rem_mr(&adapter
->mr
);
2775 pr_err("unregister MR failed - driver inoperable!\n");
2780 clear_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
2782 list_for_each_entry(adapter
, &adapter_list
, list
)
2783 if (adapter
->active_ports
) {
2784 /* Register new memory region */
2785 ret
= ehea_reg_kernel_mr(adapter
, &adapter
->mr
);
2787 pr_err("register MR failed - driver inoperable!\n");
2791 /* Restart all ports */
2792 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++) {
2793 struct ehea_port
*port
= adapter
->port
[i
];
2796 struct net_device
*dev
= port
->netdev
;
2798 if (dev
->flags
& IFF_UP
) {
2799 mutex_lock(&port
->port_lock
);
2800 ret
= ehea_restart_qps(dev
);
2803 port_napi_enable(port
);
2804 netif_tx_wake_all_queues(dev
);
2806 netdev_err(dev
, "Unable to restart QPS\n");
2808 mutex_unlock(&port
->port_lock
);
2813 pr_info("re-initializing driver complete\n");
2818 static void ehea_tx_watchdog(struct net_device
*dev
)
2820 struct ehea_port
*port
= netdev_priv(dev
);
2822 if (netif_carrier_ok(dev
) &&
2823 !test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))
2824 ehea_schedule_port_reset(port
);
2827 int ehea_sense_adapter_attr(struct ehea_adapter
*adapter
)
2829 struct hcp_query_ehea
*cb
;
2833 cb
= (void *)get_zeroed_page(GFP_KERNEL
);
2839 hret
= ehea_h_query_ehea(adapter
->handle
, cb
);
2841 if (hret
!= H_SUCCESS
) {
2846 adapter
->max_mc_mac
= cb
->max_mc_mac
- 1;
2850 free_page((unsigned long)cb
);
2855 int ehea_get_jumboframe_status(struct ehea_port
*port
, int *jumbo
)
2857 struct hcp_ehea_port_cb4
*cb4
;
2863 /* (Try to) enable *jumbo frames */
2864 cb4
= (void *)get_zeroed_page(GFP_KERNEL
);
2866 pr_err("no mem for cb4\n");
2870 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
2871 port
->logical_port_id
,
2873 H_PORT_CB4_JUMBO
, cb4
);
2874 if (hret
== H_SUCCESS
) {
2875 if (cb4
->jumbo_frame
)
2878 cb4
->jumbo_frame
= 1;
2879 hret
= ehea_h_modify_ehea_port(port
->adapter
->
2886 if (hret
== H_SUCCESS
)
2892 free_page((unsigned long)cb4
);
2898 static ssize_t
ehea_show_port_id(struct device
*dev
,
2899 struct device_attribute
*attr
, char *buf
)
2901 struct ehea_port
*port
= container_of(dev
, struct ehea_port
, ofdev
.dev
);
2902 return sprintf(buf
, "%d", port
->logical_port_id
);
2905 static DEVICE_ATTR(log_port_id
, S_IRUSR
| S_IRGRP
| S_IROTH
, ehea_show_port_id
,
2908 static void __devinit
logical_port_release(struct device
*dev
)
2910 struct ehea_port
*port
= container_of(dev
, struct ehea_port
, ofdev
.dev
);
2911 of_node_put(port
->ofdev
.dev
.of_node
);
2914 static struct device
*ehea_register_port(struct ehea_port
*port
,
2915 struct device_node
*dn
)
2919 port
->ofdev
.dev
.of_node
= of_node_get(dn
);
2920 port
->ofdev
.dev
.parent
= &port
->adapter
->ofdev
->dev
;
2921 port
->ofdev
.dev
.bus
= &ibmebus_bus_type
;
2923 dev_set_name(&port
->ofdev
.dev
, "port%d", port_name_cnt
++);
2924 port
->ofdev
.dev
.release
= logical_port_release
;
2926 ret
= of_device_register(&port
->ofdev
);
2928 pr_err("failed to register device. ret=%d\n", ret
);
2932 ret
= device_create_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
2934 pr_err("failed to register attributes, ret=%d\n", ret
);
2935 goto out_unreg_of_dev
;
2938 return &port
->ofdev
.dev
;
2941 of_device_unregister(&port
->ofdev
);
2946 static void ehea_unregister_port(struct ehea_port
*port
)
2948 device_remove_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
2949 of_device_unregister(&port
->ofdev
);
2952 static const struct net_device_ops ehea_netdev_ops
= {
2953 .ndo_open
= ehea_open
,
2954 .ndo_stop
= ehea_stop
,
2955 .ndo_start_xmit
= ehea_start_xmit
,
2956 #ifdef CONFIG_NET_POLL_CONTROLLER
2957 .ndo_poll_controller
= ehea_netpoll
,
2959 .ndo_get_stats64
= ehea_get_stats64
,
2960 .ndo_set_mac_address
= ehea_set_mac_addr
,
2961 .ndo_validate_addr
= eth_validate_addr
,
2962 .ndo_set_rx_mode
= ehea_set_multicast_list
,
2963 .ndo_change_mtu
= ehea_change_mtu
,
2964 .ndo_vlan_rx_add_vid
= ehea_vlan_rx_add_vid
,
2965 .ndo_vlan_rx_kill_vid
= ehea_vlan_rx_kill_vid
,
2966 .ndo_tx_timeout
= ehea_tx_watchdog
,
2969 struct ehea_port
*ehea_setup_single_port(struct ehea_adapter
*adapter
,
2970 u32 logical_port_id
,
2971 struct device_node
*dn
)
2974 struct net_device
*dev
;
2975 struct ehea_port
*port
;
2976 struct device
*port_dev
;
2979 /* allocate memory for the port structures */
2980 dev
= alloc_etherdev_mq(sizeof(struct ehea_port
), EHEA_MAX_PORT_RES
);
2983 pr_err("no mem for net_device\n");
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_TX
| NETIF_F_LRO
;
3029 dev
->features
= NETIF_F_SG
| NETIF_F_FRAGLIST
| NETIF_F_TSO
3030 | NETIF_F_HIGHDMA
| NETIF_F_IP_CSUM
| NETIF_F_HW_VLAN_TX
3031 | NETIF_F_HW_VLAN_RX
| NETIF_F_HW_VLAN_FILTER
3033 dev
->vlan_features
= NETIF_F_SG
| NETIF_F_TSO
| NETIF_F_HIGHDMA
|
3035 dev
->watchdog_timeo
= EHEA_WATCH_DOG_TIMEOUT
;
3037 INIT_WORK(&port
->reset_task
, ehea_reset_port
);
3038 INIT_DELAYED_WORK(&port
->stats_work
, ehea_update_stats
);
3040 init_waitqueue_head(&port
->swqe_avail_wq
);
3041 init_waitqueue_head(&port
->restart_wq
);
3043 memset(&port
->stats
, 0, sizeof(struct net_device_stats
));
3044 ret
= register_netdev(dev
);
3046 pr_err("register_netdev failed. ret=%d\n", ret
);
3047 goto out_unreg_port
;
3050 ret
= ehea_get_jumboframe_status(port
, &jumbo
);
3052 netdev_err(dev
, "failed determining jumbo frame status\n");
3054 netdev_info(dev
, "Jumbo frames are %sabled\n",
3055 jumbo
== 1 ? "en" : "dis");
3057 adapter
->active_ports
++;
3062 ehea_unregister_port(port
);
3065 kfree(port
->mc_list
);
3071 pr_err("setting up logical port with id=%d failed, ret=%d\n",
3072 logical_port_id
, ret
);
3076 static void ehea_shutdown_single_port(struct ehea_port
*port
)
3078 struct ehea_adapter
*adapter
= port
->adapter
;
3080 cancel_work_sync(&port
->reset_task
);
3081 cancel_delayed_work_sync(&port
->stats_work
);
3082 unregister_netdev(port
->netdev
);
3083 ehea_unregister_port(port
);
3084 kfree(port
->mc_list
);
3085 free_netdev(port
->netdev
);
3086 adapter
->active_ports
--;
3089 static int ehea_setup_ports(struct ehea_adapter
*adapter
)
3091 struct device_node
*lhea_dn
;
3092 struct device_node
*eth_dn
= NULL
;
3094 const u32
*dn_log_port_id
;
3097 lhea_dn
= adapter
->ofdev
->dev
.of_node
;
3098 while ((eth_dn
= of_get_next_child(lhea_dn
, eth_dn
))) {
3100 dn_log_port_id
= of_get_property(eth_dn
, "ibm,hea-port-no",
3102 if (!dn_log_port_id
) {
3103 pr_err("bad device node: eth_dn name=%s\n",
3108 if (ehea_add_adapter_mr(adapter
)) {
3109 pr_err("creating MR failed\n");
3110 of_node_put(eth_dn
);
3114 adapter
->port
[i
] = ehea_setup_single_port(adapter
,
3117 if (adapter
->port
[i
])
3118 netdev_info(adapter
->port
[i
]->netdev
,
3119 "logical port id #%d\n", *dn_log_port_id
);
3121 ehea_remove_adapter_mr(adapter
);
3128 static struct device_node
*ehea_get_eth_dn(struct ehea_adapter
*adapter
,
3129 u32 logical_port_id
)
3131 struct device_node
*lhea_dn
;
3132 struct device_node
*eth_dn
= NULL
;
3133 const u32
*dn_log_port_id
;
3135 lhea_dn
= adapter
->ofdev
->dev
.of_node
;
3136 while ((eth_dn
= of_get_next_child(lhea_dn
, eth_dn
))) {
3138 dn_log_port_id
= of_get_property(eth_dn
, "ibm,hea-port-no",
3141 if (*dn_log_port_id
== logical_port_id
)
3148 static ssize_t
ehea_probe_port(struct device
*dev
,
3149 struct device_attribute
*attr
,
3150 const char *buf
, size_t count
)
3152 struct ehea_adapter
*adapter
= dev_get_drvdata(dev
);
3153 struct ehea_port
*port
;
3154 struct device_node
*eth_dn
= NULL
;
3157 u32 logical_port_id
;
3159 sscanf(buf
, "%d", &logical_port_id
);
3161 port
= ehea_get_port(adapter
, logical_port_id
);
3164 netdev_info(port
->netdev
, "adding port with logical port id=%d failed: port already configured\n",
3169 eth_dn
= ehea_get_eth_dn(adapter
, logical_port_id
);
3172 pr_info("no logical port with id %d found\n", logical_port_id
);
3176 if (ehea_add_adapter_mr(adapter
)) {
3177 pr_err("creating MR failed\n");
3181 port
= ehea_setup_single_port(adapter
, logical_port_id
, eth_dn
);
3183 of_node_put(eth_dn
);
3186 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3187 if (!adapter
->port
[i
]) {
3188 adapter
->port
[i
] = port
;
3192 netdev_info(port
->netdev
, "added: (logical port id=%d)\n",
3195 ehea_remove_adapter_mr(adapter
);
3199 return (ssize_t
) count
;
3202 static ssize_t
ehea_remove_port(struct device
*dev
,
3203 struct device_attribute
*attr
,
3204 const char *buf
, size_t count
)
3206 struct ehea_adapter
*adapter
= dev_get_drvdata(dev
);
3207 struct ehea_port
*port
;
3209 u32 logical_port_id
;
3211 sscanf(buf
, "%d", &logical_port_id
);
3213 port
= ehea_get_port(adapter
, logical_port_id
);
3216 netdev_info(port
->netdev
, "removed: (logical port id=%d)\n",
3219 ehea_shutdown_single_port(port
);
3221 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3222 if (adapter
->port
[i
] == port
) {
3223 adapter
->port
[i
] = NULL
;
3227 pr_err("removing port with logical port id=%d failed. port not configured.\n",
3232 ehea_remove_adapter_mr(adapter
);
3234 return (ssize_t
) count
;
3237 static DEVICE_ATTR(probe_port
, S_IWUSR
, NULL
, ehea_probe_port
);
3238 static DEVICE_ATTR(remove_port
, S_IWUSR
, NULL
, ehea_remove_port
);
3240 int ehea_create_device_sysfs(struct platform_device
*dev
)
3242 int ret
= device_create_file(&dev
->dev
, &dev_attr_probe_port
);
3246 ret
= device_create_file(&dev
->dev
, &dev_attr_remove_port
);
3251 void ehea_remove_device_sysfs(struct platform_device
*dev
)
3253 device_remove_file(&dev
->dev
, &dev_attr_probe_port
);
3254 device_remove_file(&dev
->dev
, &dev_attr_remove_port
);
3257 static int __devinit
ehea_probe_adapter(struct platform_device
*dev
,
3258 const struct of_device_id
*id
)
3260 struct ehea_adapter
*adapter
;
3261 const u64
*adapter_handle
;
3264 if (!dev
|| !dev
->dev
.of_node
) {
3265 pr_err("Invalid ibmebus device probed\n");
3269 adapter
= kzalloc(sizeof(*adapter
), GFP_KERNEL
);
3272 dev_err(&dev
->dev
, "no mem for ehea_adapter\n");
3276 list_add(&adapter
->list
, &adapter_list
);
3278 adapter
->ofdev
= dev
;
3280 adapter_handle
= of_get_property(dev
->dev
.of_node
, "ibm,hea-handle",
3283 adapter
->handle
= *adapter_handle
;
3285 if (!adapter
->handle
) {
3286 dev_err(&dev
->dev
, "failed getting handle for adapter"
3287 " '%s'\n", dev
->dev
.of_node
->full_name
);
3292 adapter
->pd
= EHEA_PD_ID
;
3294 dev_set_drvdata(&dev
->dev
, adapter
);
3297 /* initialize adapter and ports */
3298 /* get adapter properties */
3299 ret
= ehea_sense_adapter_attr(adapter
);
3301 dev_err(&dev
->dev
, "sense_adapter_attr failed: %d\n", ret
);
3305 adapter
->neq
= ehea_create_eq(adapter
,
3306 EHEA_NEQ
, EHEA_MAX_ENTRIES_EQ
, 1);
3307 if (!adapter
->neq
) {
3309 dev_err(&dev
->dev
, "NEQ creation failed\n");
3313 tasklet_init(&adapter
->neq_tasklet
, ehea_neq_tasklet
,
3314 (unsigned long)adapter
);
3316 ret
= ibmebus_request_irq(adapter
->neq
->attr
.ist1
,
3317 ehea_interrupt_neq
, IRQF_DISABLED
,
3318 "ehea_neq", adapter
);
3320 dev_err(&dev
->dev
, "requesting NEQ IRQ failed\n");
3324 ret
= ehea_create_device_sysfs(dev
);
3328 ret
= ehea_setup_ports(adapter
);
3330 dev_err(&dev
->dev
, "setup_ports failed\n");
3331 goto out_rem_dev_sysfs
;
3338 ehea_remove_device_sysfs(dev
);
3341 ibmebus_free_irq(adapter
->neq
->attr
.ist1
, adapter
);
3344 ehea_destroy_eq(adapter
->neq
);
3347 list_del(&adapter
->list
);
3351 ehea_update_firmware_handles();
3356 static int __devexit
ehea_remove(struct platform_device
*dev
)
3358 struct ehea_adapter
*adapter
= dev_get_drvdata(&dev
->dev
);
3361 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3362 if (adapter
->port
[i
]) {
3363 ehea_shutdown_single_port(adapter
->port
[i
]);
3364 adapter
->port
[i
] = NULL
;
3367 ehea_remove_device_sysfs(dev
);
3369 ibmebus_free_irq(adapter
->neq
->attr
.ist1
, adapter
);
3370 tasklet_kill(&adapter
->neq_tasklet
);
3372 ehea_destroy_eq(adapter
->neq
);
3373 ehea_remove_adapter_mr(adapter
);
3374 list_del(&adapter
->list
);
3377 ehea_update_firmware_handles();
3382 void ehea_crash_handler(void)
3386 if (ehea_fw_handles
.arr
)
3387 for (i
= 0; i
< ehea_fw_handles
.num_entries
; i
++)
3388 ehea_h_free_resource(ehea_fw_handles
.arr
[i
].adh
,
3389 ehea_fw_handles
.arr
[i
].fwh
,
3392 if (ehea_bcmc_regs
.arr
)
3393 for (i
= 0; i
< ehea_bcmc_regs
.num_entries
; i
++)
3394 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs
.arr
[i
].adh
,
3395 ehea_bcmc_regs
.arr
[i
].port_id
,
3396 ehea_bcmc_regs
.arr
[i
].reg_type
,
3397 ehea_bcmc_regs
.arr
[i
].macaddr
,
3401 static int ehea_mem_notifier(struct notifier_block
*nb
,
3402 unsigned long action
, void *data
)
3404 int ret
= NOTIFY_BAD
;
3405 struct memory_notify
*arg
= data
;
3407 mutex_lock(&dlpar_mem_lock
);
3410 case MEM_CANCEL_OFFLINE
:
3411 pr_info("memory offlining canceled");
3412 /* Readd canceled memory block */
3414 pr_info("memory is going online");
3415 set_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
3416 if (ehea_add_sect_bmap(arg
->start_pfn
, arg
->nr_pages
))
3420 case MEM_GOING_OFFLINE
:
3421 pr_info("memory is going offline");
3422 set_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
3423 if (ehea_rem_sect_bmap(arg
->start_pfn
, arg
->nr_pages
))
3431 ehea_update_firmware_handles();
3435 mutex_unlock(&dlpar_mem_lock
);
3439 static struct notifier_block ehea_mem_nb
= {
3440 .notifier_call
= ehea_mem_notifier
,
3443 static int ehea_reboot_notifier(struct notifier_block
*nb
,
3444 unsigned long action
, void *unused
)
3446 if (action
== SYS_RESTART
) {
3447 pr_info("Reboot: freeing all eHEA resources\n");
3448 ibmebus_unregister_driver(&ehea_driver
);
3453 static struct notifier_block ehea_reboot_nb
= {
3454 .notifier_call
= ehea_reboot_notifier
,
3457 static int check_module_parm(void)
3461 if ((rq1_entries
< EHEA_MIN_ENTRIES_QP
) ||
3462 (rq1_entries
> EHEA_MAX_ENTRIES_RQ1
)) {
3463 pr_info("Bad parameter: rq1_entries\n");
3466 if ((rq2_entries
< EHEA_MIN_ENTRIES_QP
) ||
3467 (rq2_entries
> EHEA_MAX_ENTRIES_RQ2
)) {
3468 pr_info("Bad parameter: rq2_entries\n");
3471 if ((rq3_entries
< EHEA_MIN_ENTRIES_QP
) ||
3472 (rq3_entries
> EHEA_MAX_ENTRIES_RQ3
)) {
3473 pr_info("Bad parameter: rq3_entries\n");
3476 if ((sq_entries
< EHEA_MIN_ENTRIES_QP
) ||
3477 (sq_entries
> EHEA_MAX_ENTRIES_SQ
)) {
3478 pr_info("Bad parameter: sq_entries\n");
3485 static ssize_t
ehea_show_capabilities(struct device_driver
*drv
,
3488 return sprintf(buf
, "%d", EHEA_CAPABILITIES
);
3491 static DRIVER_ATTR(capabilities
, S_IRUSR
| S_IRGRP
| S_IROTH
,
3492 ehea_show_capabilities
, NULL
);
3494 int __init
ehea_module_init(void)
3498 pr_info("IBM eHEA ethernet device driver (Release %s)\n", DRV_VERSION
);
3500 memset(&ehea_fw_handles
, 0, sizeof(ehea_fw_handles
));
3501 memset(&ehea_bcmc_regs
, 0, sizeof(ehea_bcmc_regs
));
3503 mutex_init(&ehea_fw_handles
.lock
);
3504 spin_lock_init(&ehea_bcmc_regs
.lock
);
3506 ret
= check_module_parm();
3510 ret
= ehea_create_busmap();
3514 ret
= register_reboot_notifier(&ehea_reboot_nb
);
3516 pr_info("failed registering reboot notifier\n");
3518 ret
= register_memory_notifier(&ehea_mem_nb
);
3520 pr_info("failed registering memory remove notifier\n");
3522 ret
= crash_shutdown_register(ehea_crash_handler
);
3524 pr_info("failed registering crash handler\n");
3526 ret
= ibmebus_register_driver(&ehea_driver
);
3528 pr_err("failed registering eHEA device driver on ebus\n");
3532 ret
= driver_create_file(&ehea_driver
.driver
,
3533 &driver_attr_capabilities
);
3535 pr_err("failed to register capabilities attribute, ret=%d\n",
3543 ibmebus_unregister_driver(&ehea_driver
);
3545 unregister_memory_notifier(&ehea_mem_nb
);
3546 unregister_reboot_notifier(&ehea_reboot_nb
);
3547 crash_shutdown_unregister(ehea_crash_handler
);
3552 static void __exit
ehea_module_exit(void)
3556 driver_remove_file(&ehea_driver
.driver
, &driver_attr_capabilities
);
3557 ibmebus_unregister_driver(&ehea_driver
);
3558 unregister_reboot_notifier(&ehea_reboot_nb
);
3559 ret
= crash_shutdown_unregister(ehea_crash_handler
);
3561 pr_info("failed unregistering crash handler\n");
3562 unregister_memory_notifier(&ehea_mem_nb
);
3563 kfree(ehea_fw_handles
.arr
);
3564 kfree(ehea_bcmc_regs
.arr
);
3565 ehea_destroy_busmap();
3568 module_init(ehea_module_init
);
3569 module_exit(ehea_module_exit
);