2 * linux/drivers/net/ehea/ehea_main.c
4 * eHEA ethernet device driver for IBM eServer System p
6 * (C) Copyright IBM Corp. 2006
9 * Christoph Raisch <raisch@de.ibm.com>
10 * Jan-Bernd Themann <themann@de.ibm.com>
11 * Thomas Klein <tklein@de.ibm.com>
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2, or (at your option)
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
31 #include <linux/tcp.h>
32 #include <linux/udp.h>
34 #include <linux/list.h>
35 #include <linux/if_ether.h>
40 #include "ehea_phyp.h"
43 MODULE_LICENSE("GPL");
44 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
45 MODULE_DESCRIPTION("IBM eServer HEA Driver");
46 MODULE_VERSION(DRV_VERSION
);
49 static int msg_level
= -1;
50 static int rq1_entries
= EHEA_DEF_ENTRIES_RQ1
;
51 static int rq2_entries
= EHEA_DEF_ENTRIES_RQ2
;
52 static int rq3_entries
= EHEA_DEF_ENTRIES_RQ3
;
53 static int sq_entries
= EHEA_DEF_ENTRIES_SQ
;
54 static int use_mcs
= 0;
55 static int num_tx_qps
= EHEA_NUM_TX_QP
;
56 static int prop_carrier_state
= 0;
58 module_param(msg_level
, int, 0);
59 module_param(rq1_entries
, int, 0);
60 module_param(rq2_entries
, int, 0);
61 module_param(rq3_entries
, int, 0);
62 module_param(sq_entries
, int, 0);
63 module_param(prop_carrier_state
, int, 0);
64 module_param(use_mcs
, int, 0);
65 module_param(num_tx_qps
, int, 0);
67 MODULE_PARM_DESC(num_tx_qps
, "Number of TX-QPS");
68 MODULE_PARM_DESC(msg_level
, "msg_level");
69 MODULE_PARM_DESC(prop_carrier_state
, "Propagate carrier state of physical "
70 "port to stack. 1:yes, 0:no. Default = 0 ");
71 MODULE_PARM_DESC(rq3_entries
, "Number of entries for Receive Queue 3 "
72 "[2^x - 1], x = [6..14]. Default = "
73 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3
) ")");
74 MODULE_PARM_DESC(rq2_entries
, "Number of entries for Receive Queue 2 "
75 "[2^x - 1], x = [6..14]. Default = "
76 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2
) ")");
77 MODULE_PARM_DESC(rq1_entries
, "Number of entries for Receive Queue 1 "
78 "[2^x - 1], x = [6..14]. Default = "
79 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1
) ")");
80 MODULE_PARM_DESC(sq_entries
, " Number of entries for the Send Queue "
81 "[2^x - 1], x = [6..14]. Default = "
82 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ
) ")");
83 MODULE_PARM_DESC(use_mcs
, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
85 static int port_name_cnt
= 0;
86 static LIST_HEAD(adapter_list
);
87 u64 ehea_driver_flags
= 0;
88 struct workqueue_struct
*ehea_driver_wq
;
89 struct work_struct ehea_rereg_mr_task
;
92 static int __devinit
ehea_probe_adapter(struct ibmebus_dev
*dev
,
93 const struct of_device_id
*id
);
95 static int __devexit
ehea_remove(struct ibmebus_dev
*dev
);
97 static struct of_device_id ehea_device_table
[] = {
100 .compatible
= "IBM,lhea",
105 static struct ibmebus_driver ehea_driver
= {
107 .id_table
= ehea_device_table
,
108 .probe
= ehea_probe_adapter
,
109 .remove
= ehea_remove
,
112 void ehea_dump(void *adr
, int len
, char *msg
) {
114 unsigned char *deb
= adr
;
115 for (x
= 0; x
< len
; x
+= 16) {
116 printk(DRV_NAME
" %s adr=%p ofs=%04x %016lx %016lx\n", msg
,
117 deb
, x
, *((u64
*)&deb
[0]), *((u64
*)&deb
[8]));
122 static struct net_device_stats
*ehea_get_stats(struct net_device
*dev
)
124 struct ehea_port
*port
= netdev_priv(dev
);
125 struct net_device_stats
*stats
= &port
->stats
;
126 struct hcp_ehea_port_cb2
*cb2
;
127 u64 hret
, rx_packets
;
130 memset(stats
, 0, sizeof(*stats
));
132 cb2
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
134 ehea_error("no mem for cb2");
138 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
139 port
->logical_port_id
,
140 H_PORT_CB2
, H_PORT_CB2_ALL
, cb2
);
141 if (hret
!= H_SUCCESS
) {
142 ehea_error("query_ehea_port failed");
146 if (netif_msg_hw(port
))
147 ehea_dump(cb2
, sizeof(*cb2
), "net_device_stats");
150 for (i
= 0; i
< port
->num_def_qps
; i
++)
151 rx_packets
+= port
->port_res
[i
].rx_packets
;
153 stats
->tx_packets
= cb2
->txucp
+ cb2
->txmcp
+ cb2
->txbcp
;
154 stats
->multicast
= cb2
->rxmcp
;
155 stats
->rx_errors
= cb2
->rxuerr
;
156 stats
->rx_bytes
= cb2
->rxo
;
157 stats
->tx_bytes
= cb2
->txo
;
158 stats
->rx_packets
= rx_packets
;
166 static void ehea_refill_rq1(struct ehea_port_res
*pr
, int index
, int nr_of_wqes
)
168 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
169 struct net_device
*dev
= pr
->port
->netdev
;
170 int max_index_mask
= pr
->rq1_skba
.len
- 1;
176 for (i
= 0; i
< nr_of_wqes
; i
++) {
177 if (!skb_arr_rq1
[index
]) {
178 skb_arr_rq1
[index
] = netdev_alloc_skb(dev
,
180 if (!skb_arr_rq1
[index
]) {
181 ehea_error("%s: no mem for skb/%d wqes filled",
187 index
&= max_index_mask
;
190 ehea_update_rq1a(pr
->qp
, i
);
193 static int ehea_init_fill_rq1(struct ehea_port_res
*pr
, int nr_rq1a
)
196 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
197 struct net_device
*dev
= pr
->port
->netdev
;
200 for (i
= 0; i
< pr
->rq1_skba
.len
; i
++) {
201 skb_arr_rq1
[i
] = netdev_alloc_skb(dev
, EHEA_L_PKT_SIZE
);
202 if (!skb_arr_rq1
[i
]) {
203 ehea_error("%s: no mem for skb/%d wqes filled",
210 ehea_update_rq1a(pr
->qp
, nr_rq1a
);
215 static int ehea_refill_rq_def(struct ehea_port_res
*pr
,
216 struct ehea_q_skb_arr
*q_skba
, int rq_nr
,
217 int num_wqes
, int wqe_type
, int packet_size
)
219 struct net_device
*dev
= pr
->port
->netdev
;
220 struct ehea_qp
*qp
= pr
->qp
;
221 struct sk_buff
**skb_arr
= q_skba
->arr
;
222 struct ehea_rwqe
*rwqe
;
223 int i
, index
, max_index_mask
, fill_wqes
;
226 fill_wqes
= q_skba
->os_skbs
+ num_wqes
;
231 index
= q_skba
->index
;
232 max_index_mask
= q_skba
->len
- 1;
233 for (i
= 0; i
< fill_wqes
; i
++) {
234 struct sk_buff
*skb
= netdev_alloc_skb(dev
, packet_size
);
236 ehea_error("%s: no mem for skb/%d wqes filled",
237 pr
->port
->netdev
->name
, i
);
238 q_skba
->os_skbs
= fill_wqes
- i
;
242 skb_reserve(skb
, NET_IP_ALIGN
);
244 skb_arr
[index
] = skb
;
246 rwqe
= ehea_get_next_rwqe(qp
, rq_nr
);
247 rwqe
->wr_id
= EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, wqe_type
)
248 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX
, index
);
249 rwqe
->sg_list
[0].l_key
= pr
->recv_mr
.lkey
;
250 rwqe
->sg_list
[0].vaddr
= ehea_map_vaddr(skb
->data
);
251 rwqe
->sg_list
[0].len
= packet_size
;
252 rwqe
->data_segments
= 1;
255 index
&= max_index_mask
;
257 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
)))
261 q_skba
->index
= index
;
266 ehea_update_rq2a(pr
->qp
, i
);
268 ehea_update_rq3a(pr
->qp
, i
);
274 static int ehea_refill_rq2(struct ehea_port_res
*pr
, int nr_of_wqes
)
276 return ehea_refill_rq_def(pr
, &pr
->rq2_skba
, 2,
277 nr_of_wqes
, EHEA_RWQE2_TYPE
,
278 EHEA_RQ2_PKT_SIZE
+ NET_IP_ALIGN
);
282 static int ehea_refill_rq3(struct ehea_port_res
*pr
, int nr_of_wqes
)
284 return ehea_refill_rq_def(pr
, &pr
->rq3_skba
, 3,
285 nr_of_wqes
, EHEA_RWQE3_TYPE
,
286 EHEA_MAX_PACKET_SIZE
+ NET_IP_ALIGN
);
289 static inline int ehea_check_cqe(struct ehea_cqe
*cqe
, int *rq_num
)
291 *rq_num
= (cqe
->type
& EHEA_CQE_TYPE_RQ
) >> 5;
292 if ((cqe
->status
& EHEA_CQE_STAT_ERR_MASK
) == 0)
294 if (((cqe
->status
& EHEA_CQE_STAT_ERR_TCP
) != 0) &&
295 (cqe
->header_length
== 0))
300 static inline void ehea_fill_skb(struct net_device
*dev
,
301 struct sk_buff
*skb
, struct ehea_cqe
*cqe
)
303 int length
= cqe
->num_bytes_transfered
- 4; /*remove CRC */
305 skb_put(skb
, length
);
306 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
307 skb
->protocol
= eth_type_trans(skb
, dev
);
310 static inline struct sk_buff
*get_skb_by_index(struct sk_buff
**skb_array
,
312 struct ehea_cqe
*cqe
)
314 int skb_index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, cqe
->wr_id
);
324 prefetchw(pref
+ EHEA_CACHE_LINE
);
326 pref
= (skb_array
[x
]->data
);
328 prefetch(pref
+ EHEA_CACHE_LINE
);
329 prefetch(pref
+ EHEA_CACHE_LINE
* 2);
330 prefetch(pref
+ EHEA_CACHE_LINE
* 3);
331 skb
= skb_array
[skb_index
];
332 skb_array
[skb_index
] = NULL
;
336 static inline struct sk_buff
*get_skb_by_index_ll(struct sk_buff
**skb_array
,
337 int arr_len
, int wqe_index
)
348 prefetchw(pref
+ EHEA_CACHE_LINE
);
350 pref
= (skb_array
[x
]->data
);
352 prefetchw(pref
+ EHEA_CACHE_LINE
);
354 skb
= skb_array
[wqe_index
];
355 skb_array
[wqe_index
] = NULL
;
359 static int ehea_treat_poll_error(struct ehea_port_res
*pr
, int rq
,
360 struct ehea_cqe
*cqe
, int *processed_rq2
,
365 if (cqe
->status
& EHEA_CQE_STAT_ERR_TCP
)
366 pr
->p_stats
.err_tcp_cksum
++;
367 if (cqe
->status
& EHEA_CQE_STAT_ERR_IP
)
368 pr
->p_stats
.err_ip_cksum
++;
369 if (cqe
->status
& EHEA_CQE_STAT_ERR_CRC
)
370 pr
->p_stats
.err_frame_crc
++;
372 if (netif_msg_rx_err(pr
->port
)) {
373 ehea_error("CQE Error for QP %d", pr
->qp
->init_attr
.qp_nr
);
374 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
379 skb
= get_skb_by_index(pr
->rq2_skba
.arr
, pr
->rq2_skba
.len
, cqe
);
381 } else if (rq
== 3) {
383 skb
= get_skb_by_index(pr
->rq3_skba
.arr
, pr
->rq3_skba
.len
, cqe
);
387 if (cqe
->status
& EHEA_CQE_STAT_FAT_ERR_MASK
) {
388 ehea_error("Critical receive error. Resetting port.");
389 queue_work(pr
->port
->adapter
->ehea_wq
, &pr
->port
->reset_task
);
396 static int ehea_proc_rwqes(struct net_device
*dev
,
397 struct ehea_port_res
*pr
,
400 struct ehea_port
*port
= pr
->port
;
401 struct ehea_qp
*qp
= pr
->qp
;
402 struct ehea_cqe
*cqe
;
404 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
405 struct sk_buff
**skb_arr_rq2
= pr
->rq2_skba
.arr
;
406 struct sk_buff
**skb_arr_rq3
= pr
->rq3_skba
.arr
;
407 int skb_arr_rq1_len
= pr
->rq1_skba
.len
;
408 int skb_arr_rq2_len
= pr
->rq2_skba
.len
;
409 int skb_arr_rq3_len
= pr
->rq3_skba
.len
;
410 int processed
, processed_rq1
, processed_rq2
, processed_rq3
;
411 int wqe_index
, last_wqe_index
, rq
, port_reset
;
413 processed
= processed_rq1
= processed_rq2
= processed_rq3
= 0;
416 cqe
= ehea_poll_rq1(qp
, &wqe_index
);
417 while ((processed
< budget
) && cqe
) {
421 if (netif_msg_rx_status(port
))
422 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
424 last_wqe_index
= wqe_index
;
426 if (!ehea_check_cqe(cqe
, &rq
)) {
427 if (rq
== 1) { /* LL RQ1 */
428 skb
= get_skb_by_index_ll(skb_arr_rq1
,
431 if (unlikely(!skb
)) {
432 if (netif_msg_rx_err(port
))
433 ehea_error("LL rq1: skb=NULL");
435 skb
= netdev_alloc_skb(dev
,
440 skb_copy_to_linear_data(skb
, ((char*)cqe
) + 64,
441 cqe
->num_bytes_transfered
- 4);
442 ehea_fill_skb(dev
, skb
, cqe
);
443 } else if (rq
== 2) { /* RQ2 */
444 skb
= get_skb_by_index(skb_arr_rq2
,
445 skb_arr_rq2_len
, cqe
);
446 if (unlikely(!skb
)) {
447 if (netif_msg_rx_err(port
))
448 ehea_error("rq2: skb=NULL");
451 ehea_fill_skb(dev
, skb
, cqe
);
454 skb
= get_skb_by_index(skb_arr_rq3
,
455 skb_arr_rq3_len
, cqe
);
456 if (unlikely(!skb
)) {
457 if (netif_msg_rx_err(port
))
458 ehea_error("rq3: skb=NULL");
461 ehea_fill_skb(dev
, skb
, cqe
);
465 if ((cqe
->status
& EHEA_CQE_VLAN_TAG_XTRACT
)
467 vlan_hwaccel_receive_skb(skb
, port
->vgrp
,
470 netif_receive_skb(skb
);
472 dev
->last_rx
= jiffies
;
474 pr
->p_stats
.poll_receive_errors
++;
475 port_reset
= ehea_treat_poll_error(pr
, rq
, cqe
,
481 cqe
= ehea_poll_rq1(qp
, &wqe_index
);
484 pr
->rx_packets
+= processed
;
486 ehea_refill_rq1(pr
, last_wqe_index
, processed_rq1
);
487 ehea_refill_rq2(pr
, processed_rq2
);
488 ehea_refill_rq3(pr
, processed_rq3
);
493 static struct ehea_cqe
*ehea_proc_cqes(struct ehea_port_res
*pr
, int my_quota
)
496 struct ehea_cq
*send_cq
= pr
->send_cq
;
497 struct ehea_cqe
*cqe
;
498 int quota
= my_quota
;
504 cqe
= ehea_poll_cq(send_cq
);
505 while(cqe
&& (quota
> 0)) {
506 ehea_inc_cq(send_cq
);
510 if (cqe
->status
& EHEA_CQE_STAT_ERR_MASK
) {
511 ehea_error("Send Completion Error: Resetting port");
512 if (netif_msg_tx_err(pr
->port
))
513 ehea_dump(cqe
, sizeof(*cqe
), "Send CQE");
514 queue_work(pr
->port
->adapter
->ehea_wq
,
515 &pr
->port
->reset_task
);
519 if (netif_msg_tx_done(pr
->port
))
520 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
522 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE
, cqe
->wr_id
)
523 == EHEA_SWQE2_TYPE
)) {
525 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, cqe
->wr_id
);
526 skb
= pr
->sq_skba
.arr
[index
];
528 pr
->sq_skba
.arr
[index
] = NULL
;
531 swqe_av
+= EHEA_BMASK_GET(EHEA_WR_ID_REFILL
, cqe
->wr_id
);
534 cqe
= ehea_poll_cq(send_cq
);
537 ehea_update_feca(send_cq
, cqe_counter
);
538 atomic_add(swqe_av
, &pr
->swqe_avail
);
540 spin_lock_irqsave(&pr
->netif_queue
, flags
);
542 if (pr
->queue_stopped
&& (atomic_read(&pr
->swqe_avail
)
543 >= pr
->swqe_refill_th
)) {
544 netif_wake_queue(pr
->port
->netdev
);
545 pr
->queue_stopped
= 0;
547 spin_unlock_irqrestore(&pr
->netif_queue
, flags
);
552 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
553 #define EHEA_POLL_MAX_CQES 65535
555 static int ehea_poll(struct napi_struct
*napi
, int budget
)
557 struct ehea_port_res
*pr
= container_of(napi
, struct ehea_port_res
, napi
);
558 struct net_device
*dev
= pr
->port
->netdev
;
559 struct ehea_cqe
*cqe
;
560 struct ehea_cqe
*cqe_skb
= NULL
;
561 int force_irq
, wqe_index
;
564 force_irq
= (pr
->poll_counter
> EHEA_NAPI_POLL_NUM_BEFORE_IRQ
);
565 cqe_skb
= ehea_proc_cqes(pr
, EHEA_POLL_MAX_CQES
);
568 rx
+= ehea_proc_rwqes(dev
, pr
, budget
- rx
);
570 while ((rx
!= budget
) || force_irq
) {
571 pr
->poll_counter
= 0;
573 netif_rx_complete(dev
, napi
);
574 ehea_reset_cq_ep(pr
->recv_cq
);
575 ehea_reset_cq_ep(pr
->send_cq
);
576 ehea_reset_cq_n1(pr
->recv_cq
);
577 ehea_reset_cq_n1(pr
->send_cq
);
578 cqe
= ehea_poll_rq1(pr
->qp
, &wqe_index
);
579 cqe_skb
= ehea_poll_cq(pr
->send_cq
);
581 if (!cqe
&& !cqe_skb
)
584 if (!netif_rx_reschedule(dev
, napi
))
587 cqe_skb
= ehea_proc_cqes(pr
, EHEA_POLL_MAX_CQES
);
588 rx
+= ehea_proc_rwqes(dev
, pr
, budget
- rx
);
595 #ifdef CONFIG_NET_POLL_CONTROLLER
596 static void ehea_netpoll(struct net_device
*dev
)
598 struct ehea_port
*port
= netdev_priv(dev
);
601 for (i
= 0; i
< port
->num_def_qps
; i
++)
602 netif_rx_schedule(dev
, &port
->port_res
[i
].napi
);
606 static irqreturn_t
ehea_recv_irq_handler(int irq
, void *param
)
608 struct ehea_port_res
*pr
= param
;
610 netif_rx_schedule(pr
->port
->netdev
, &pr
->napi
);
615 static irqreturn_t
ehea_qp_aff_irq_handler(int irq
, void *param
)
617 struct ehea_port
*port
= param
;
618 struct ehea_eqe
*eqe
;
622 eqe
= ehea_poll_eq(port
->qp_eq
);
625 qp_token
= EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN
, eqe
->entry
);
626 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
627 eqe
->entry
, qp_token
);
629 qp
= port
->port_res
[qp_token
].qp
;
630 ehea_error_data(port
->adapter
, qp
->fw_handle
);
631 eqe
= ehea_poll_eq(port
->qp_eq
);
634 queue_work(port
->adapter
->ehea_wq
, &port
->reset_task
);
639 static struct ehea_port
*ehea_get_port(struct ehea_adapter
*adapter
,
644 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
645 if (adapter
->port
[i
])
646 if (adapter
->port
[i
]->logical_port_id
== logical_port
)
647 return adapter
->port
[i
];
651 int ehea_sense_port_attr(struct ehea_port
*port
)
655 struct hcp_ehea_port_cb0
*cb0
;
657 cb0
= kzalloc(PAGE_SIZE
, GFP_ATOMIC
); /* May be called via */
658 if (!cb0
) { /* ehea_neq_tasklet() */
659 ehea_error("no mem for cb0");
664 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
665 port
->logical_port_id
, H_PORT_CB0
,
666 EHEA_BMASK_SET(H_PORT_CB0_ALL
, 0xFFFF),
668 if (hret
!= H_SUCCESS
) {
674 port
->mac_addr
= cb0
->port_mac_addr
<< 16;
676 if (!is_valid_ether_addr((u8
*)&port
->mac_addr
)) {
677 ret
= -EADDRNOTAVAIL
;
682 switch (cb0
->port_speed
) {
684 port
->port_speed
= EHEA_SPEED_10M
;
685 port
->full_duplex
= 0;
688 port
->port_speed
= EHEA_SPEED_10M
;
689 port
->full_duplex
= 1;
692 port
->port_speed
= EHEA_SPEED_100M
;
693 port
->full_duplex
= 0;
696 port
->port_speed
= EHEA_SPEED_100M
;
697 port
->full_duplex
= 1;
700 port
->port_speed
= EHEA_SPEED_1G
;
701 port
->full_duplex
= 1;
704 port
->port_speed
= EHEA_SPEED_10G
;
705 port
->full_duplex
= 1;
708 port
->port_speed
= 0;
709 port
->full_duplex
= 0;
714 port
->num_mcs
= cb0
->num_default_qps
;
716 /* Number of default QPs */
718 port
->num_def_qps
= cb0
->num_default_qps
;
720 port
->num_def_qps
= 1;
722 if (!port
->num_def_qps
) {
727 port
->num_tx_qps
= num_tx_qps
;
729 if (port
->num_def_qps
>= port
->num_tx_qps
)
730 port
->num_add_tx_qps
= 0;
732 port
->num_add_tx_qps
= port
->num_tx_qps
- port
->num_def_qps
;
736 if (ret
|| netif_msg_probe(port
))
737 ehea_dump(cb0
, sizeof(*cb0
), "ehea_sense_port_attr");
743 int ehea_set_portspeed(struct ehea_port
*port
, u32 port_speed
)
745 struct hcp_ehea_port_cb4
*cb4
;
749 cb4
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
751 ehea_error("no mem for cb4");
756 cb4
->port_speed
= port_speed
;
758 netif_carrier_off(port
->netdev
);
760 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
761 port
->logical_port_id
,
762 H_PORT_CB4
, H_PORT_CB4_SPEED
, cb4
);
763 if (hret
== H_SUCCESS
) {
764 port
->autoneg
= port_speed
== EHEA_SPEED_AUTONEG
? 1 : 0;
766 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
767 port
->logical_port_id
,
768 H_PORT_CB4
, H_PORT_CB4_SPEED
,
770 if (hret
== H_SUCCESS
) {
771 switch (cb4
->port_speed
) {
773 port
->port_speed
= EHEA_SPEED_10M
;
774 port
->full_duplex
= 0;
777 port
->port_speed
= EHEA_SPEED_10M
;
778 port
->full_duplex
= 1;
781 port
->port_speed
= EHEA_SPEED_100M
;
782 port
->full_duplex
= 0;
785 port
->port_speed
= EHEA_SPEED_100M
;
786 port
->full_duplex
= 1;
789 port
->port_speed
= EHEA_SPEED_1G
;
790 port
->full_duplex
= 1;
793 port
->port_speed
= EHEA_SPEED_10G
;
794 port
->full_duplex
= 1;
797 port
->port_speed
= 0;
798 port
->full_duplex
= 0;
802 ehea_error("Failed sensing port speed");
806 if (hret
== H_AUTHORITY
) {
807 ehea_info("Hypervisor denied setting port speed");
811 ehea_error("Failed setting port speed");
814 if (!prop_carrier_state
|| (port
->phy_link
== EHEA_PHY_LINK_UP
))
815 netif_carrier_on(port
->netdev
);
822 static void ehea_parse_eqe(struct ehea_adapter
*adapter
, u64 eqe
)
827 struct ehea_port
*port
;
829 ec
= EHEA_BMASK_GET(NEQE_EVENT_CODE
, eqe
);
830 portnum
= EHEA_BMASK_GET(NEQE_PORTNUM
, eqe
);
831 port
= ehea_get_port(adapter
, portnum
);
834 case EHEA_EC_PORTSTATE_CHG
: /* port state change */
837 ehea_error("unknown portnum %x", portnum
);
841 if (EHEA_BMASK_GET(NEQE_PORT_UP
, eqe
)) {
842 if (!netif_carrier_ok(port
->netdev
)) {
843 ret
= ehea_sense_port_attr(port
);
845 ehea_error("failed resensing port "
850 if (netif_msg_link(port
))
851 ehea_info("%s: Logical port up: %dMbps "
856 1 ? "Full" : "Half");
858 netif_carrier_on(port
->netdev
);
859 netif_wake_queue(port
->netdev
);
862 if (netif_carrier_ok(port
->netdev
)) {
863 if (netif_msg_link(port
))
864 ehea_info("%s: Logical port down",
866 netif_carrier_off(port
->netdev
);
867 netif_stop_queue(port
->netdev
);
870 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP
, eqe
)) {
871 port
->phy_link
= EHEA_PHY_LINK_UP
;
872 if (netif_msg_link(port
))
873 ehea_info("%s: Physical port up",
875 if (prop_carrier_state
)
876 netif_carrier_on(port
->netdev
);
878 port
->phy_link
= EHEA_PHY_LINK_DOWN
;
879 if (netif_msg_link(port
))
880 ehea_info("%s: Physical port down",
882 if (prop_carrier_state
)
883 netif_carrier_off(port
->netdev
);
886 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY
, eqe
))
887 ehea_info("External switch port is primary port");
889 ehea_info("External switch port is backup port");
892 case EHEA_EC_ADAPTER_MALFUNC
:
893 ehea_error("Adapter malfunction");
895 case EHEA_EC_PORT_MALFUNC
:
896 ehea_info("Port malfunction: Device: %s", port
->netdev
->name
);
897 netif_carrier_off(port
->netdev
);
898 netif_stop_queue(port
->netdev
);
901 ehea_error("unknown event code %x, eqe=0x%lX", ec
, eqe
);
906 static void ehea_neq_tasklet(unsigned long data
)
908 struct ehea_adapter
*adapter
= (struct ehea_adapter
*)data
;
909 struct ehea_eqe
*eqe
;
912 eqe
= ehea_poll_eq(adapter
->neq
);
913 ehea_debug("eqe=%p", eqe
);
916 ehea_debug("*eqe=%lx", eqe
->entry
);
917 ehea_parse_eqe(adapter
, eqe
->entry
);
918 eqe
= ehea_poll_eq(adapter
->neq
);
919 ehea_debug("next eqe=%p", eqe
);
922 event_mask
= EHEA_BMASK_SET(NELR_PORTSTATE_CHG
, 1)
923 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC
, 1)
924 | EHEA_BMASK_SET(NELR_PORT_MALFUNC
, 1);
926 ehea_h_reset_events(adapter
->handle
,
927 adapter
->neq
->fw_handle
, event_mask
);
930 static irqreturn_t
ehea_interrupt_neq(int irq
, void *param
)
932 struct ehea_adapter
*adapter
= param
;
933 tasklet_hi_schedule(&adapter
->neq_tasklet
);
938 static int ehea_fill_port_res(struct ehea_port_res
*pr
)
941 struct ehea_qp_init_attr
*init_attr
= &pr
->qp
->init_attr
;
943 ret
= ehea_init_fill_rq1(pr
, init_attr
->act_nr_rwqes_rq1
944 - init_attr
->act_nr_rwqes_rq2
945 - init_attr
->act_nr_rwqes_rq3
- 1);
947 ret
|= ehea_refill_rq2(pr
, init_attr
->act_nr_rwqes_rq2
- 1);
949 ret
|= ehea_refill_rq3(pr
, init_attr
->act_nr_rwqes_rq3
- 1);
954 static int ehea_reg_interrupts(struct net_device
*dev
)
956 struct ehea_port
*port
= netdev_priv(dev
);
957 struct ehea_port_res
*pr
;
961 snprintf(port
->int_aff_name
, EHEA_IRQ_NAME_SIZE
- 1, "%s-aff",
964 ret
= ibmebus_request_irq(NULL
, port
->qp_eq
->attr
.ist1
,
965 ehea_qp_aff_irq_handler
,
966 IRQF_DISABLED
, port
->int_aff_name
, port
);
968 ehea_error("failed registering irq for qp_aff_irq_handler:"
969 "ist=%X", port
->qp_eq
->attr
.ist1
);
973 if (netif_msg_ifup(port
))
974 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
975 "registered", port
->qp_eq
->attr
.ist1
);
978 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
979 pr
= &port
->port_res
[i
];
980 snprintf(pr
->int_send_name
, EHEA_IRQ_NAME_SIZE
- 1,
981 "%s-queue%d", dev
->name
, i
);
982 ret
= ibmebus_request_irq(NULL
, pr
->eq
->attr
.ist1
,
983 ehea_recv_irq_handler
,
984 IRQF_DISABLED
, pr
->int_send_name
,
987 ehea_error("failed registering irq for ehea_queue "
988 "port_res_nr:%d, ist=%X", i
,
992 if (netif_msg_ifup(port
))
993 ehea_info("irq_handle 0x%X for function ehea_queue_int "
994 "%d registered", pr
->eq
->attr
.ist1
, i
);
1002 u32 ist
= port
->port_res
[i
].eq
->attr
.ist1
;
1003 ibmebus_free_irq(NULL
, ist
, &port
->port_res
[i
]);
1007 ibmebus_free_irq(NULL
, port
->qp_eq
->attr
.ist1
, port
);
1008 i
= port
->num_def_qps
;
1014 static void ehea_free_interrupts(struct net_device
*dev
)
1016 struct ehea_port
*port
= netdev_priv(dev
);
1017 struct ehea_port_res
*pr
;
1022 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
1023 pr
= &port
->port_res
[i
];
1024 ibmebus_free_irq(NULL
, pr
->eq
->attr
.ist1
, pr
);
1025 if (netif_msg_intr(port
))
1026 ehea_info("free send irq for res %d with handle 0x%X",
1027 i
, pr
->eq
->attr
.ist1
);
1030 /* associated events */
1031 ibmebus_free_irq(NULL
, port
->qp_eq
->attr
.ist1
, port
);
1032 if (netif_msg_intr(port
))
1033 ehea_info("associated event interrupt for handle 0x%X freed",
1034 port
->qp_eq
->attr
.ist1
);
1037 static int ehea_configure_port(struct ehea_port
*port
)
1041 struct hcp_ehea_port_cb0
*cb0
;
1044 cb0
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
1048 cb0
->port_rc
= EHEA_BMASK_SET(PXLY_RC_VALID
, 1)
1049 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM
, 1)
1050 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM
, 1)
1051 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT
, 1)
1052 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER
,
1053 PXLY_RC_VLAN_FILTER
)
1054 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME
, 1);
1056 for (i
= 0; i
< port
->num_mcs
; i
++)
1058 cb0
->default_qpn_arr
[i
] =
1059 port
->port_res
[i
].qp
->init_attr
.qp_nr
;
1061 cb0
->default_qpn_arr
[i
] =
1062 port
->port_res
[0].qp
->init_attr
.qp_nr
;
1064 if (netif_msg_ifup(port
))
1065 ehea_dump(cb0
, sizeof(*cb0
), "ehea_configure_port");
1067 mask
= EHEA_BMASK_SET(H_PORT_CB0_PRC
, 1)
1068 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY
, 1);
1070 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1071 port
->logical_port_id
,
1072 H_PORT_CB0
, mask
, cb0
);
1074 if (hret
!= H_SUCCESS
)
1085 int ehea_gen_smrs(struct ehea_port_res
*pr
)
1088 struct ehea_adapter
*adapter
= pr
->port
->adapter
;
1090 ret
= ehea_gen_smr(adapter
, &adapter
->mr
, &pr
->send_mr
);
1094 ret
= ehea_gen_smr(adapter
, &adapter
->mr
, &pr
->recv_mr
);
1101 ehea_rem_mr(&pr
->send_mr
);
1103 ehea_error("Generating SMRS failed\n");
1107 int ehea_rem_smrs(struct ehea_port_res
*pr
)
1109 if ((ehea_rem_mr(&pr
->send_mr
))
1110 || (ehea_rem_mr(&pr
->recv_mr
)))
1116 static int ehea_init_q_skba(struct ehea_q_skb_arr
*q_skba
, int max_q_entries
)
1118 int arr_size
= sizeof(void*) * max_q_entries
;
1120 q_skba
->arr
= vmalloc(arr_size
);
1124 memset(q_skba
->arr
, 0, arr_size
);
1126 q_skba
->len
= max_q_entries
;
1128 q_skba
->os_skbs
= 0;
1133 static int ehea_init_port_res(struct ehea_port
*port
, struct ehea_port_res
*pr
,
1134 struct port_res_cfg
*pr_cfg
, int queue_token
)
1136 struct ehea_adapter
*adapter
= port
->adapter
;
1137 enum ehea_eq_type eq_type
= EHEA_EQ
;
1138 struct ehea_qp_init_attr
*init_attr
= NULL
;
1141 memset(pr
, 0, sizeof(struct ehea_port_res
));
1144 spin_lock_init(&pr
->xmit_lock
);
1145 spin_lock_init(&pr
->netif_queue
);
1147 pr
->eq
= ehea_create_eq(adapter
, eq_type
, EHEA_MAX_ENTRIES_EQ
, 0);
1149 ehea_error("create_eq failed (eq)");
1153 pr
->recv_cq
= ehea_create_cq(adapter
, pr_cfg
->max_entries_rcq
,
1155 port
->logical_port_id
);
1157 ehea_error("create_cq failed (cq_recv)");
1161 pr
->send_cq
= ehea_create_cq(adapter
, pr_cfg
->max_entries_scq
,
1163 port
->logical_port_id
);
1165 ehea_error("create_cq failed (cq_send)");
1169 if (netif_msg_ifup(port
))
1170 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1171 pr
->send_cq
->attr
.act_nr_of_cqes
,
1172 pr
->recv_cq
->attr
.act_nr_of_cqes
);
1174 init_attr
= kzalloc(sizeof(*init_attr
), GFP_KERNEL
);
1177 ehea_error("no mem for ehea_qp_init_attr");
1181 init_attr
->low_lat_rq1
= 1;
1182 init_attr
->signalingtype
= 1; /* generate CQE if specified in WQE */
1183 init_attr
->rq_count
= 3;
1184 init_attr
->qp_token
= queue_token
;
1185 init_attr
->max_nr_send_wqes
= pr_cfg
->max_entries_sq
;
1186 init_attr
->max_nr_rwqes_rq1
= pr_cfg
->max_entries_rq1
;
1187 init_attr
->max_nr_rwqes_rq2
= pr_cfg
->max_entries_rq2
;
1188 init_attr
->max_nr_rwqes_rq3
= pr_cfg
->max_entries_rq3
;
1189 init_attr
->wqe_size_enc_sq
= EHEA_SG_SQ
;
1190 init_attr
->wqe_size_enc_rq1
= EHEA_SG_RQ1
;
1191 init_attr
->wqe_size_enc_rq2
= EHEA_SG_RQ2
;
1192 init_attr
->wqe_size_enc_rq3
= EHEA_SG_RQ3
;
1193 init_attr
->rq2_threshold
= EHEA_RQ2_THRESHOLD
;
1194 init_attr
->rq3_threshold
= EHEA_RQ3_THRESHOLD
;
1195 init_attr
->port_nr
= port
->logical_port_id
;
1196 init_attr
->send_cq_handle
= pr
->send_cq
->fw_handle
;
1197 init_attr
->recv_cq_handle
= pr
->recv_cq
->fw_handle
;
1198 init_attr
->aff_eq_handle
= port
->qp_eq
->fw_handle
;
1200 pr
->qp
= ehea_create_qp(adapter
, adapter
->pd
, init_attr
);
1202 ehea_error("create_qp failed");
1207 if (netif_msg_ifup(port
))
1208 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1209 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr
->qp_nr
,
1210 init_attr
->act_nr_send_wqes
,
1211 init_attr
->act_nr_rwqes_rq1
,
1212 init_attr
->act_nr_rwqes_rq2
,
1213 init_attr
->act_nr_rwqes_rq3
);
1215 ret
= ehea_init_q_skba(&pr
->sq_skba
, init_attr
->act_nr_send_wqes
+ 1);
1216 ret
|= ehea_init_q_skba(&pr
->rq1_skba
, init_attr
->act_nr_rwqes_rq1
+ 1);
1217 ret
|= ehea_init_q_skba(&pr
->rq2_skba
, init_attr
->act_nr_rwqes_rq2
+ 1);
1218 ret
|= ehea_init_q_skba(&pr
->rq3_skba
, init_attr
->act_nr_rwqes_rq3
+ 1);
1222 pr
->swqe_refill_th
= init_attr
->act_nr_send_wqes
/ 10;
1223 if (ehea_gen_smrs(pr
) != 0) {
1228 atomic_set(&pr
->swqe_avail
, init_attr
->act_nr_send_wqes
- 1);
1232 netif_napi_add(pr
->port
->netdev
, &pr
->napi
, ehea_poll
, 64);
1239 vfree(pr
->sq_skba
.arr
);
1240 vfree(pr
->rq1_skba
.arr
);
1241 vfree(pr
->rq2_skba
.arr
);
1242 vfree(pr
->rq3_skba
.arr
);
1243 ehea_destroy_qp(pr
->qp
);
1244 ehea_destroy_cq(pr
->send_cq
);
1245 ehea_destroy_cq(pr
->recv_cq
);
1246 ehea_destroy_eq(pr
->eq
);
1251 static int ehea_clean_portres(struct ehea_port
*port
, struct ehea_port_res
*pr
)
1255 ret
= ehea_destroy_qp(pr
->qp
);
1258 ehea_destroy_cq(pr
->send_cq
);
1259 ehea_destroy_cq(pr
->recv_cq
);
1260 ehea_destroy_eq(pr
->eq
);
1262 for (i
= 0; i
< pr
->rq1_skba
.len
; i
++)
1263 if (pr
->rq1_skba
.arr
[i
])
1264 dev_kfree_skb(pr
->rq1_skba
.arr
[i
]);
1266 for (i
= 0; i
< pr
->rq2_skba
.len
; i
++)
1267 if (pr
->rq2_skba
.arr
[i
])
1268 dev_kfree_skb(pr
->rq2_skba
.arr
[i
]);
1270 for (i
= 0; i
< pr
->rq3_skba
.len
; i
++)
1271 if (pr
->rq3_skba
.arr
[i
])
1272 dev_kfree_skb(pr
->rq3_skba
.arr
[i
]);
1274 for (i
= 0; i
< pr
->sq_skba
.len
; i
++)
1275 if (pr
->sq_skba
.arr
[i
])
1276 dev_kfree_skb(pr
->sq_skba
.arr
[i
]);
1278 vfree(pr
->rq1_skba
.arr
);
1279 vfree(pr
->rq2_skba
.arr
);
1280 vfree(pr
->rq3_skba
.arr
);
1281 vfree(pr
->sq_skba
.arr
);
1282 ret
= ehea_rem_smrs(pr
);
1288 * The write_* functions store information in swqe which is used by
1289 * the hardware to calculate the ip/tcp/udp checksum
1292 static inline void write_ip_start_end(struct ehea_swqe
*swqe
,
1293 const struct sk_buff
*skb
)
1295 swqe
->ip_start
= skb_network_offset(skb
);
1296 swqe
->ip_end
= (u8
)(swqe
->ip_start
+ ip_hdrlen(skb
) - 1);
1299 static inline void write_tcp_offset_end(struct ehea_swqe
*swqe
,
1300 const struct sk_buff
*skb
)
1303 (u8
)(swqe
->ip_end
+ 1 + offsetof(struct tcphdr
, check
));
1305 swqe
->tcp_end
= (u16
)skb
->len
- 1;
1308 static inline void write_udp_offset_end(struct ehea_swqe
*swqe
,
1309 const struct sk_buff
*skb
)
1312 (u8
)(swqe
->ip_end
+ 1 + offsetof(struct udphdr
, check
));
1314 swqe
->tcp_end
= (u16
)skb
->len
- 1;
1318 static void write_swqe2_TSO(struct sk_buff
*skb
,
1319 struct ehea_swqe
*swqe
, u32 lkey
)
1321 struct ehea_vsgentry
*sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1322 u8
*imm_data
= &swqe
->u
.immdata_desc
.immediate_data
[0];
1323 int skb_data_size
= skb
->len
- skb
->data_len
;
1326 /* Packet is TCP with TSO enabled */
1327 swqe
->tx_control
|= EHEA_SWQE_TSO
;
1328 swqe
->mss
= skb_shinfo(skb
)->gso_size
;
1329 /* copy only eth/ip/tcp headers to immediate data and
1330 * the rest of skb->data to sg1entry
1332 headersize
= ETH_HLEN
+ ip_hdrlen(skb
) + tcp_hdrlen(skb
);
1334 skb_data_size
= skb
->len
- skb
->data_len
;
1336 if (skb_data_size
>= headersize
) {
1337 /* copy immediate data */
1338 skb_copy_from_linear_data(skb
, imm_data
, headersize
);
1339 swqe
->immediate_data_length
= headersize
;
1341 if (skb_data_size
> headersize
) {
1342 /* set sg1entry data */
1343 sg1entry
->l_key
= lkey
;
1344 sg1entry
->len
= skb_data_size
- headersize
;
1346 ehea_map_vaddr(skb
->data
+ headersize
);
1347 swqe
->descriptors
++;
1350 ehea_error("cannot handle fragmented headers");
1353 static void write_swqe2_nonTSO(struct sk_buff
*skb
,
1354 struct ehea_swqe
*swqe
, u32 lkey
)
1356 int skb_data_size
= skb
->len
- skb
->data_len
;
1357 u8
*imm_data
= &swqe
->u
.immdata_desc
.immediate_data
[0];
1358 struct ehea_vsgentry
*sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1360 /* Packet is any nonTSO type
1362 * Copy as much as possible skb->data to immediate data and
1363 * the rest to sg1entry
1365 if (skb_data_size
>= SWQE2_MAX_IMM
) {
1366 /* copy immediate data */
1367 skb_copy_from_linear_data(skb
, imm_data
, SWQE2_MAX_IMM
);
1369 swqe
->immediate_data_length
= SWQE2_MAX_IMM
;
1371 if (skb_data_size
> SWQE2_MAX_IMM
) {
1372 /* copy sg1entry data */
1373 sg1entry
->l_key
= lkey
;
1374 sg1entry
->len
= skb_data_size
- SWQE2_MAX_IMM
;
1376 ehea_map_vaddr(skb
->data
+ SWQE2_MAX_IMM
);
1377 swqe
->descriptors
++;
1380 skb_copy_from_linear_data(skb
, imm_data
, skb_data_size
);
1381 swqe
->immediate_data_length
= skb_data_size
;
1385 static inline void write_swqe2_data(struct sk_buff
*skb
, struct net_device
*dev
,
1386 struct ehea_swqe
*swqe
, u32 lkey
)
1388 struct ehea_vsgentry
*sg_list
, *sg1entry
, *sgentry
;
1390 int nfrags
, sg1entry_contains_frag_data
, i
;
1392 nfrags
= skb_shinfo(skb
)->nr_frags
;
1393 sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1394 sg_list
= (struct ehea_vsgentry
*)&swqe
->u
.immdata_desc
.sg_list
;
1395 swqe
->descriptors
= 0;
1396 sg1entry_contains_frag_data
= 0;
1398 if ((dev
->features
& NETIF_F_TSO
) && skb_shinfo(skb
)->gso_size
)
1399 write_swqe2_TSO(skb
, swqe
, lkey
);
1401 write_swqe2_nonTSO(skb
, swqe
, lkey
);
1403 /* write descriptors */
1405 if (swqe
->descriptors
== 0) {
1406 /* sg1entry not yet used */
1407 frag
= &skb_shinfo(skb
)->frags
[0];
1409 /* copy sg1entry data */
1410 sg1entry
->l_key
= lkey
;
1411 sg1entry
->len
= frag
->size
;
1413 ehea_map_vaddr(page_address(frag
->page
)
1414 + frag
->page_offset
);
1415 swqe
->descriptors
++;
1416 sg1entry_contains_frag_data
= 1;
1419 for (i
= sg1entry_contains_frag_data
; i
< nfrags
; i
++) {
1421 frag
= &skb_shinfo(skb
)->frags
[i
];
1422 sgentry
= &sg_list
[i
- sg1entry_contains_frag_data
];
1424 sgentry
->l_key
= lkey
;
1425 sgentry
->len
= frag
->size
;
1427 ehea_map_vaddr(page_address(frag
->page
)
1428 + frag
->page_offset
);
1429 swqe
->descriptors
++;
1434 static int ehea_broadcast_reg_helper(struct ehea_port
*port
, u32 hcallid
)
1440 /* De/Register untagged packets */
1441 reg_type
= EHEA_BCMC_BROADCAST
| EHEA_BCMC_UNTAGGED
;
1442 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1443 port
->logical_port_id
,
1444 reg_type
, port
->mac_addr
, 0, hcallid
);
1445 if (hret
!= H_SUCCESS
) {
1446 ehea_error("%sregistering bc address failed (tagged)",
1447 hcallid
== H_REG_BCMC
? "" : "de");
1452 /* De/Register VLAN packets */
1453 reg_type
= EHEA_BCMC_BROADCAST
| EHEA_BCMC_VLANID_ALL
;
1454 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1455 port
->logical_port_id
,
1456 reg_type
, port
->mac_addr
, 0, hcallid
);
1457 if (hret
!= H_SUCCESS
) {
1458 ehea_error("%sregistering bc address failed (vlan)",
1459 hcallid
== H_REG_BCMC
? "" : "de");
1466 static int ehea_set_mac_addr(struct net_device
*dev
, void *sa
)
1468 struct ehea_port
*port
= netdev_priv(dev
);
1469 struct sockaddr
*mac_addr
= sa
;
1470 struct hcp_ehea_port_cb0
*cb0
;
1474 if (!is_valid_ether_addr(mac_addr
->sa_data
)) {
1475 ret
= -EADDRNOTAVAIL
;
1479 cb0
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
1481 ehea_error("no mem for cb0");
1486 memcpy(&(cb0
->port_mac_addr
), &(mac_addr
->sa_data
[0]), ETH_ALEN
);
1488 cb0
->port_mac_addr
= cb0
->port_mac_addr
>> 16;
1490 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1491 port
->logical_port_id
, H_PORT_CB0
,
1492 EHEA_BMASK_SET(H_PORT_CB0_MAC
, 1), cb0
);
1493 if (hret
!= H_SUCCESS
) {
1498 memcpy(dev
->dev_addr
, mac_addr
->sa_data
, dev
->addr_len
);
1500 /* Deregister old MAC in pHYP */
1501 ret
= ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
1505 port
->mac_addr
= cb0
->port_mac_addr
<< 16;
1507 /* Register new MAC in pHYP */
1508 ret
= ehea_broadcast_reg_helper(port
, H_REG_BCMC
);
1519 static void ehea_promiscuous_error(u64 hret
, int enable
)
1521 if (hret
== H_AUTHORITY
)
1522 ehea_info("Hypervisor denied %sabling promiscuous mode",
1523 enable
== 1 ? "en" : "dis");
1525 ehea_error("failed %sabling promiscuous mode",
1526 enable
== 1 ? "en" : "dis");
1529 static void ehea_promiscuous(struct net_device
*dev
, int enable
)
1531 struct ehea_port
*port
= netdev_priv(dev
);
1532 struct hcp_ehea_port_cb7
*cb7
;
1535 if ((enable
&& port
->promisc
) || (!enable
&& !port
->promisc
))
1538 cb7
= kzalloc(PAGE_SIZE
, GFP_ATOMIC
);
1540 ehea_error("no mem for cb7");
1544 /* Modify Pxs_DUCQPN in CB7 */
1545 cb7
->def_uc_qpn
= enable
== 1 ? port
->port_res
[0].qp
->fw_handle
: 0;
1547 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1548 port
->logical_port_id
,
1549 H_PORT_CB7
, H_PORT_CB7_DUCQPN
, cb7
);
1551 ehea_promiscuous_error(hret
, enable
);
1555 port
->promisc
= enable
;
1561 static u64
ehea_multicast_reg_helper(struct ehea_port
*port
, u64 mc_mac_addr
,
1567 reg_type
= EHEA_BCMC_SCOPE_ALL
| EHEA_BCMC_MULTICAST
1568 | EHEA_BCMC_UNTAGGED
;
1570 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1571 port
->logical_port_id
,
1572 reg_type
, mc_mac_addr
, 0, hcallid
);
1576 reg_type
= EHEA_BCMC_SCOPE_ALL
| EHEA_BCMC_MULTICAST
1577 | EHEA_BCMC_VLANID_ALL
;
1579 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1580 port
->logical_port_id
,
1581 reg_type
, mc_mac_addr
, 0, hcallid
);
1586 static int ehea_drop_multicast_list(struct net_device
*dev
)
1588 struct ehea_port
*port
= netdev_priv(dev
);
1589 struct ehea_mc_list
*mc_entry
= port
->mc_list
;
1590 struct list_head
*pos
;
1591 struct list_head
*temp
;
1595 list_for_each_safe(pos
, temp
, &(port
->mc_list
->list
)) {
1596 mc_entry
= list_entry(pos
, struct ehea_mc_list
, list
);
1598 hret
= ehea_multicast_reg_helper(port
, mc_entry
->macaddr
,
1601 ehea_error("failed deregistering mcast MAC");
1611 static void ehea_allmulti(struct net_device
*dev
, int enable
)
1613 struct ehea_port
*port
= netdev_priv(dev
);
1616 if (!port
->allmulti
) {
1618 /* Enable ALLMULTI */
1619 ehea_drop_multicast_list(dev
);
1620 hret
= ehea_multicast_reg_helper(port
, 0, H_REG_BCMC
);
1624 ehea_error("failed enabling IFF_ALLMULTI");
1628 /* Disable ALLMULTI */
1629 hret
= ehea_multicast_reg_helper(port
, 0, H_DEREG_BCMC
);
1633 ehea_error("failed disabling IFF_ALLMULTI");
1637 static void ehea_add_multicast_entry(struct ehea_port
* port
, u8
* mc_mac_addr
)
1639 struct ehea_mc_list
*ehea_mcl_entry
;
1642 ehea_mcl_entry
= kzalloc(sizeof(*ehea_mcl_entry
), GFP_ATOMIC
);
1643 if (!ehea_mcl_entry
) {
1644 ehea_error("no mem for mcl_entry");
1648 INIT_LIST_HEAD(&ehea_mcl_entry
->list
);
1650 memcpy(&ehea_mcl_entry
->macaddr
, mc_mac_addr
, ETH_ALEN
);
1652 hret
= ehea_multicast_reg_helper(port
, ehea_mcl_entry
->macaddr
,
1655 list_add(&ehea_mcl_entry
->list
, &port
->mc_list
->list
);
1657 ehea_error("failed registering mcast MAC");
1658 kfree(ehea_mcl_entry
);
1662 static void ehea_set_multicast_list(struct net_device
*dev
)
1664 struct ehea_port
*port
= netdev_priv(dev
);
1665 struct dev_mc_list
*k_mcl_entry
;
1668 if (dev
->flags
& IFF_PROMISC
) {
1669 ehea_promiscuous(dev
, 1);
1672 ehea_promiscuous(dev
, 0);
1674 if (dev
->flags
& IFF_ALLMULTI
) {
1675 ehea_allmulti(dev
, 1);
1678 ehea_allmulti(dev
, 0);
1680 if (dev
->mc_count
) {
1681 ret
= ehea_drop_multicast_list(dev
);
1683 /* Dropping the current multicast list failed.
1684 * Enabling ALL_MULTI is the best we can do.
1686 ehea_allmulti(dev
, 1);
1689 if (dev
->mc_count
> port
->adapter
->max_mc_mac
) {
1690 ehea_info("Mcast registration limit reached (0x%lx). "
1692 port
->adapter
->max_mc_mac
);
1696 for (i
= 0, k_mcl_entry
= dev
->mc_list
;
1698 i
++, k_mcl_entry
= k_mcl_entry
->next
) {
1699 ehea_add_multicast_entry(port
, k_mcl_entry
->dmi_addr
);
1706 static int ehea_change_mtu(struct net_device
*dev
, int new_mtu
)
1708 if ((new_mtu
< 68) || (new_mtu
> EHEA_MAX_PACKET_SIZE
))
1714 static void ehea_xmit2(struct sk_buff
*skb
, struct net_device
*dev
,
1715 struct ehea_swqe
*swqe
, u32 lkey
)
1717 if (skb
->protocol
== htons(ETH_P_IP
)) {
1718 const struct iphdr
*iph
= ip_hdr(skb
);
1721 swqe
->tx_control
|= EHEA_SWQE_CRC
1722 | EHEA_SWQE_IP_CHECKSUM
1723 | EHEA_SWQE_TCP_CHECKSUM
1724 | EHEA_SWQE_IMM_DATA_PRESENT
1725 | EHEA_SWQE_DESCRIPTORS_PRESENT
;
1727 write_ip_start_end(swqe
, skb
);
1729 if (iph
->protocol
== IPPROTO_UDP
) {
1730 if ((iph
->frag_off
& IP_MF
)
1731 || (iph
->frag_off
& IP_OFFSET
))
1732 /* IP fragment, so don't change cs */
1733 swqe
->tx_control
&= ~EHEA_SWQE_TCP_CHECKSUM
;
1735 write_udp_offset_end(swqe
, skb
);
1736 } else if (iph
->protocol
== IPPROTO_TCP
) {
1737 write_tcp_offset_end(swqe
, skb
);
1740 /* icmp (big data) and ip segmentation packets (all other ip
1741 packets) do not require any special handling */
1744 /* Other Ethernet Protocol */
1745 swqe
->tx_control
|= EHEA_SWQE_CRC
1746 | EHEA_SWQE_IMM_DATA_PRESENT
1747 | EHEA_SWQE_DESCRIPTORS_PRESENT
;
1750 write_swqe2_data(skb
, dev
, swqe
, lkey
);
1753 static void ehea_xmit3(struct sk_buff
*skb
, struct net_device
*dev
,
1754 struct ehea_swqe
*swqe
)
1756 int nfrags
= skb_shinfo(skb
)->nr_frags
;
1757 u8
*imm_data
= &swqe
->u
.immdata_nodesc
.immediate_data
[0];
1761 if (skb
->protocol
== htons(ETH_P_IP
)) {
1762 const struct iphdr
*iph
= ip_hdr(skb
);
1765 write_ip_start_end(swqe
, skb
);
1767 if (iph
->protocol
== IPPROTO_TCP
) {
1768 swqe
->tx_control
|= EHEA_SWQE_CRC
1769 | EHEA_SWQE_IP_CHECKSUM
1770 | EHEA_SWQE_TCP_CHECKSUM
1771 | EHEA_SWQE_IMM_DATA_PRESENT
;
1773 write_tcp_offset_end(swqe
, skb
);
1775 } else if (iph
->protocol
== IPPROTO_UDP
) {
1776 if ((iph
->frag_off
& IP_MF
)
1777 || (iph
->frag_off
& IP_OFFSET
))
1778 /* IP fragment, so don't change cs */
1779 swqe
->tx_control
|= EHEA_SWQE_CRC
1780 | EHEA_SWQE_IMM_DATA_PRESENT
;
1782 swqe
->tx_control
|= EHEA_SWQE_CRC
1783 | EHEA_SWQE_IP_CHECKSUM
1784 | EHEA_SWQE_TCP_CHECKSUM
1785 | EHEA_SWQE_IMM_DATA_PRESENT
;
1787 write_udp_offset_end(swqe
, skb
);
1790 /* icmp (big data) and
1791 ip segmentation packets (all other ip packets) */
1792 swqe
->tx_control
|= EHEA_SWQE_CRC
1793 | EHEA_SWQE_IP_CHECKSUM
1794 | EHEA_SWQE_IMM_DATA_PRESENT
;
1797 /* Other Ethernet Protocol */
1798 swqe
->tx_control
|= EHEA_SWQE_CRC
| EHEA_SWQE_IMM_DATA_PRESENT
;
1800 /* copy (immediate) data */
1802 /* data is in a single piece */
1803 skb_copy_from_linear_data(skb
, imm_data
, skb
->len
);
1805 /* first copy data from the skb->data buffer ... */
1806 skb_copy_from_linear_data(skb
, imm_data
,
1807 skb
->len
- skb
->data_len
);
1808 imm_data
+= skb
->len
- skb
->data_len
;
1810 /* ... then copy data from the fragments */
1811 for (i
= 0; i
< nfrags
; i
++) {
1812 frag
= &skb_shinfo(skb
)->frags
[i
];
1814 page_address(frag
->page
) + frag
->page_offset
,
1816 imm_data
+= frag
->size
;
1819 swqe
->immediate_data_length
= skb
->len
;
1823 static inline int ehea_hash_skb(struct sk_buff
*skb
, int num_qps
)
1828 if ((skb
->protocol
== htons(ETH_P_IP
)) &&
1829 (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)) {
1830 tcp
= (struct tcphdr
*)(skb_network_header(skb
) + (ip_hdr(skb
)->ihl
* 4));
1831 tmp
= (tcp
->source
+ (tcp
->dest
<< 16)) % 31;
1832 tmp
+= ip_hdr(skb
)->daddr
% 31;
1833 return tmp
% num_qps
;
1839 static int ehea_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
1841 struct ehea_port
*port
= netdev_priv(dev
);
1842 struct ehea_swqe
*swqe
;
1843 unsigned long flags
;
1846 struct ehea_port_res
*pr
;
1848 pr
= &port
->port_res
[ehea_hash_skb(skb
, port
->num_tx_qps
)];
1850 if (!spin_trylock(&pr
->xmit_lock
))
1851 return NETDEV_TX_BUSY
;
1853 if (pr
->queue_stopped
) {
1854 spin_unlock(&pr
->xmit_lock
);
1855 return NETDEV_TX_BUSY
;
1858 swqe
= ehea_get_swqe(pr
->qp
, &swqe_index
);
1859 memset(swqe
, 0, SWQE_HEADER_SIZE
);
1860 atomic_dec(&pr
->swqe_avail
);
1862 if (skb
->len
<= SWQE3_MAX_IMM
) {
1863 u32 sig_iv
= port
->sig_comp_iv
;
1864 u32 swqe_num
= pr
->swqe_id_counter
;
1865 ehea_xmit3(skb
, dev
, swqe
);
1866 swqe
->wr_id
= EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, EHEA_SWQE3_TYPE
)
1867 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT
, swqe_num
);
1868 if (pr
->swqe_ll_count
>= (sig_iv
- 1)) {
1869 swqe
->wr_id
|= EHEA_BMASK_SET(EHEA_WR_ID_REFILL
,
1871 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
1872 pr
->swqe_ll_count
= 0;
1874 pr
->swqe_ll_count
+= 1;
1877 EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, EHEA_SWQE2_TYPE
)
1878 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT
, pr
->swqe_id_counter
)
1879 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL
, 1)
1880 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX
, pr
->sq_skba
.index
);
1881 pr
->sq_skba
.arr
[pr
->sq_skba
.index
] = skb
;
1883 pr
->sq_skba
.index
++;
1884 pr
->sq_skba
.index
&= (pr
->sq_skba
.len
- 1);
1886 lkey
= pr
->send_mr
.lkey
;
1887 ehea_xmit2(skb
, dev
, swqe
, lkey
);
1888 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
1890 pr
->swqe_id_counter
+= 1;
1892 if (port
->vgrp
&& vlan_tx_tag_present(skb
)) {
1893 swqe
->tx_control
|= EHEA_SWQE_VLAN_INSERT
;
1894 swqe
->vlan_tag
= vlan_tx_tag_get(skb
);
1897 if (netif_msg_tx_queued(port
)) {
1898 ehea_info("post swqe on QP %d", pr
->qp
->init_attr
.qp_nr
);
1899 ehea_dump(swqe
, 512, "swqe");
1902 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
)))
1905 ehea_post_swqe(pr
->qp
, swqe
);
1908 if (unlikely(atomic_read(&pr
->swqe_avail
) <= 1)) {
1909 spin_lock_irqsave(&pr
->netif_queue
, flags
);
1910 if (unlikely(atomic_read(&pr
->swqe_avail
) <= 1)) {
1911 pr
->p_stats
.queue_stopped
++;
1912 netif_stop_queue(dev
);
1913 pr
->queue_stopped
= 1;
1915 spin_unlock_irqrestore(&pr
->netif_queue
, flags
);
1917 dev
->trans_start
= jiffies
;
1918 spin_unlock(&pr
->xmit_lock
);
1920 return NETDEV_TX_OK
;
1923 static void ehea_vlan_rx_register(struct net_device
*dev
,
1924 struct vlan_group
*grp
)
1926 struct ehea_port
*port
= netdev_priv(dev
);
1927 struct ehea_adapter
*adapter
= port
->adapter
;
1928 struct hcp_ehea_port_cb1
*cb1
;
1933 cb1
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
1935 ehea_error("no mem for cb1");
1939 memset(cb1
->vlan_filter
, 0, sizeof(cb1
->vlan_filter
));
1941 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
1942 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
1943 if (hret
!= H_SUCCESS
)
1944 ehea_error("modify_ehea_port failed");
1951 static void ehea_vlan_rx_add_vid(struct net_device
*dev
, unsigned short vid
)
1953 struct ehea_port
*port
= netdev_priv(dev
);
1954 struct ehea_adapter
*adapter
= port
->adapter
;
1955 struct hcp_ehea_port_cb1
*cb1
;
1959 cb1
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
1961 ehea_error("no mem for cb1");
1965 hret
= ehea_h_query_ehea_port(adapter
->handle
, port
->logical_port_id
,
1966 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
1967 if (hret
!= H_SUCCESS
) {
1968 ehea_error("query_ehea_port failed");
1973 cb1
->vlan_filter
[index
] |= ((u64
)(0x8000000000000000 >> (vid
& 0x3F)));
1975 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
1976 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
1977 if (hret
!= H_SUCCESS
)
1978 ehea_error("modify_ehea_port failed");
1984 static void ehea_vlan_rx_kill_vid(struct net_device
*dev
, unsigned short vid
)
1986 struct ehea_port
*port
= netdev_priv(dev
);
1987 struct ehea_adapter
*adapter
= port
->adapter
;
1988 struct hcp_ehea_port_cb1
*cb1
;
1992 vlan_group_set_device(port
->vgrp
, vid
, NULL
);
1994 cb1
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
1996 ehea_error("no mem for cb1");
2000 hret
= ehea_h_query_ehea_port(adapter
->handle
, port
->logical_port_id
,
2001 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2002 if (hret
!= H_SUCCESS
) {
2003 ehea_error("query_ehea_port failed");
2008 cb1
->vlan_filter
[index
] &= ~((u64
)(0x8000000000000000 >> (vid
& 0x3F)));
2010 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2011 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2012 if (hret
!= H_SUCCESS
)
2013 ehea_error("modify_ehea_port failed");
2019 int ehea_activate_qp(struct ehea_adapter
*adapter
, struct ehea_qp
*qp
)
2025 struct hcp_modify_qp_cb0
* cb0
;
2027 cb0
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2033 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2034 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2035 if (hret
!= H_SUCCESS
) {
2036 ehea_error("query_ehea_qp failed (1)");
2040 cb0
->qp_ctl_reg
= H_QP_CR_STATE_INITIALIZED
;
2041 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2042 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2043 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2044 if (hret
!= H_SUCCESS
) {
2045 ehea_error("modify_ehea_qp failed (1)");
2049 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2050 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2051 if (hret
!= H_SUCCESS
) {
2052 ehea_error("query_ehea_qp failed (2)");
2056 cb0
->qp_ctl_reg
= H_QP_CR_ENABLED
| H_QP_CR_STATE_INITIALIZED
;
2057 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2058 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2059 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2060 if (hret
!= H_SUCCESS
) {
2061 ehea_error("modify_ehea_qp failed (2)");
2065 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2066 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2067 if (hret
!= H_SUCCESS
) {
2068 ehea_error("query_ehea_qp failed (3)");
2072 cb0
->qp_ctl_reg
= H_QP_CR_ENABLED
| H_QP_CR_STATE_RDY2SND
;
2073 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2074 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2075 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2076 if (hret
!= H_SUCCESS
) {
2077 ehea_error("modify_ehea_qp failed (3)");
2081 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2082 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2083 if (hret
!= H_SUCCESS
) {
2084 ehea_error("query_ehea_qp failed (4)");
2094 static int ehea_port_res_setup(struct ehea_port
*port
, int def_qps
,
2098 struct port_res_cfg pr_cfg
, pr_cfg_small_rx
;
2099 enum ehea_eq_type eq_type
= EHEA_EQ
;
2101 port
->qp_eq
= ehea_create_eq(port
->adapter
, eq_type
,
2102 EHEA_MAX_ENTRIES_EQ
, 1);
2105 ehea_error("ehea_create_eq failed (qp_eq)");
2109 pr_cfg
.max_entries_rcq
= rq1_entries
+ rq2_entries
+ rq3_entries
;
2110 pr_cfg
.max_entries_scq
= sq_entries
* 2;
2111 pr_cfg
.max_entries_sq
= sq_entries
;
2112 pr_cfg
.max_entries_rq1
= rq1_entries
;
2113 pr_cfg
.max_entries_rq2
= rq2_entries
;
2114 pr_cfg
.max_entries_rq3
= rq3_entries
;
2116 pr_cfg_small_rx
.max_entries_rcq
= 1;
2117 pr_cfg_small_rx
.max_entries_scq
= sq_entries
;
2118 pr_cfg_small_rx
.max_entries_sq
= sq_entries
;
2119 pr_cfg_small_rx
.max_entries_rq1
= 1;
2120 pr_cfg_small_rx
.max_entries_rq2
= 1;
2121 pr_cfg_small_rx
.max_entries_rq3
= 1;
2123 for (i
= 0; i
< def_qps
; i
++) {
2124 ret
= ehea_init_port_res(port
, &port
->port_res
[i
], &pr_cfg
, i
);
2128 for (i
= def_qps
; i
< def_qps
+ add_tx_qps
; i
++) {
2129 ret
= ehea_init_port_res(port
, &port
->port_res
[i
],
2130 &pr_cfg_small_rx
, i
);
2139 ehea_clean_portres(port
, &port
->port_res
[i
]);
2142 ehea_destroy_eq(port
->qp_eq
);
2146 static int ehea_clean_all_portres(struct ehea_port
*port
)
2151 for(i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++)
2152 ret
|= ehea_clean_portres(port
, &port
->port_res
[i
]);
2154 ret
|= ehea_destroy_eq(port
->qp_eq
);
2159 static void ehea_remove_adapter_mr(struct ehea_adapter
*adapter
)
2161 if (adapter
->active_ports
)
2164 ehea_rem_mr(&adapter
->mr
);
2167 static int ehea_add_adapter_mr(struct ehea_adapter
*adapter
)
2169 if (adapter
->active_ports
)
2172 return ehea_reg_kernel_mr(adapter
, &adapter
->mr
);
2175 static int ehea_up(struct net_device
*dev
)
2178 struct ehea_port
*port
= netdev_priv(dev
);
2180 if (port
->state
== EHEA_PORT_UP
)
2183 ret
= ehea_port_res_setup(port
, port
->num_def_qps
,
2184 port
->num_add_tx_qps
);
2186 ehea_error("port_res_failed");
2190 /* Set default QP for this port */
2191 ret
= ehea_configure_port(port
);
2193 ehea_error("ehea_configure_port failed. ret:%d", ret
);
2197 ret
= ehea_reg_interrupts(dev
);
2199 ehea_error("reg_interrupts failed. ret:%d", ret
);
2203 for(i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
2204 ret
= ehea_activate_qp(port
->adapter
, port
->port_res
[i
].qp
);
2206 ehea_error("activate_qp failed");
2211 for(i
= 0; i
< port
->num_def_qps
; i
++) {
2212 ret
= ehea_fill_port_res(&port
->port_res
[i
]);
2214 ehea_error("out_free_irqs");
2220 port
->state
= EHEA_PORT_UP
;
2224 ehea_free_interrupts(dev
);
2227 ehea_clean_all_portres(port
);
2230 ehea_info("Failed starting %s. ret=%i", dev
->name
, ret
);
2235 static void port_napi_disable(struct ehea_port
*port
)
2239 for (i
= 0; i
< port
->num_def_qps
; i
++)
2240 napi_disable(&port
->port_res
[i
].napi
);
2243 static void port_napi_enable(struct ehea_port
*port
)
2247 for (i
= 0; i
< port
->num_def_qps
; i
++)
2248 napi_enable(&port
->port_res
[i
].napi
);
2251 static int ehea_open(struct net_device
*dev
)
2254 struct ehea_port
*port
= netdev_priv(dev
);
2256 down(&port
->port_lock
);
2258 if (netif_msg_ifup(port
))
2259 ehea_info("enabling port %s", dev
->name
);
2263 port_napi_enable(port
);
2264 netif_start_queue(dev
);
2267 up(&port
->port_lock
);
2272 static int ehea_down(struct net_device
*dev
)
2275 struct ehea_port
*port
= netdev_priv(dev
);
2277 if (port
->state
== EHEA_PORT_DOWN
)
2280 ehea_drop_multicast_list(dev
);
2281 ehea_free_interrupts(dev
);
2283 port_napi_disable(port
);
2285 port
->state
= EHEA_PORT_DOWN
;
2287 ret
= ehea_clean_all_portres(port
);
2289 ehea_info("Failed freeing resources for %s. ret=%i",
2295 static int ehea_stop(struct net_device
*dev
)
2298 struct ehea_port
*port
= netdev_priv(dev
);
2300 if (netif_msg_ifdown(port
))
2301 ehea_info("disabling port %s", dev
->name
);
2303 flush_workqueue(port
->adapter
->ehea_wq
);
2304 down(&port
->port_lock
);
2305 netif_stop_queue(dev
);
2306 ret
= ehea_down(dev
);
2307 up(&port
->port_lock
);
2311 static void ehea_reset_port(struct work_struct
*work
)
2314 struct ehea_port
*port
=
2315 container_of(work
, struct ehea_port
, reset_task
);
2316 struct net_device
*dev
= port
->netdev
;
2319 down(&port
->port_lock
);
2320 netif_stop_queue(dev
);
2322 port_napi_disable(port
);
2330 if (netif_msg_timer(port
))
2331 ehea_info("Device %s resetted successfully", dev
->name
);
2333 port_napi_enable(port
);
2335 netif_wake_queue(dev
);
2337 up(&port
->port_lock
);
2341 static void ehea_rereg_mrs(struct work_struct
*work
)
2344 struct ehea_adapter
*adapter
;
2346 ehea_info("LPAR memory enlarged - re-initializing driver");
2348 list_for_each_entry(adapter
, &adapter_list
, list
)
2349 if (adapter
->active_ports
) {
2350 /* Shutdown all ports */
2351 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++) {
2352 struct ehea_port
*port
= adapter
->port
[i
];
2355 struct net_device
*dev
= port
->netdev
;
2357 if (dev
->flags
& IFF_UP
) {
2358 ehea_info("stopping %s",
2360 down(&port
->port_lock
);
2361 netif_stop_queue(dev
);
2363 port_napi_disable(port
);
2366 up(&port
->port_lock
);
2371 /* Unregister old memory region */
2372 ret
= ehea_rem_mr(&adapter
->mr
);
2374 ehea_error("unregister MR failed - driver"
2380 ehea_destroy_busmap();
2382 ret
= ehea_create_busmap();
2386 clear_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
2388 list_for_each_entry(adapter
, &adapter_list
, list
)
2389 if (adapter
->active_ports
) {
2390 /* Register new memory region */
2391 ret
= ehea_reg_kernel_mr(adapter
, &adapter
->mr
);
2393 ehea_error("register MR failed - driver"
2398 /* Restart all ports */
2399 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++) {
2400 struct ehea_port
*port
= adapter
->port
[i
];
2403 struct net_device
*dev
= port
->netdev
;
2405 if (dev
->flags
& IFF_UP
) {
2406 ehea_info("restarting %s",
2408 down(&port
->port_lock
);
2412 port_napi_enable(port
);
2413 netif_wake_queue(dev
);
2416 up(&port
->port_lock
);
2425 static void ehea_tx_watchdog(struct net_device
*dev
)
2427 struct ehea_port
*port
= netdev_priv(dev
);
2429 if (netif_carrier_ok(dev
))
2430 queue_work(port
->adapter
->ehea_wq
, &port
->reset_task
);
2433 int ehea_sense_adapter_attr(struct ehea_adapter
*adapter
)
2435 struct hcp_query_ehea
*cb
;
2439 cb
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2445 hret
= ehea_h_query_ehea(adapter
->handle
, cb
);
2447 if (hret
!= H_SUCCESS
) {
2452 adapter
->max_mc_mac
= cb
->max_mc_mac
- 1;
2461 int ehea_get_jumboframe_status(struct ehea_port
*port
, int *jumbo
)
2463 struct hcp_ehea_port_cb4
*cb4
;
2469 /* (Try to) enable *jumbo frames */
2470 cb4
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2472 ehea_error("no mem for cb4");
2476 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
2477 port
->logical_port_id
,
2479 H_PORT_CB4_JUMBO
, cb4
);
2480 if (hret
== H_SUCCESS
) {
2481 if (cb4
->jumbo_frame
)
2484 cb4
->jumbo_frame
= 1;
2485 hret
= ehea_h_modify_ehea_port(port
->adapter
->
2492 if (hret
== H_SUCCESS
)
2504 static ssize_t
ehea_show_port_id(struct device
*dev
,
2505 struct device_attribute
*attr
, char *buf
)
2507 struct ehea_port
*port
= container_of(dev
, struct ehea_port
, ofdev
.dev
);
2508 return sprintf(buf
, "%d", port
->logical_port_id
);
2511 static DEVICE_ATTR(log_port_id
, S_IRUSR
| S_IRGRP
| S_IROTH
, ehea_show_port_id
,
2514 static void __devinit
logical_port_release(struct device
*dev
)
2516 struct ehea_port
*port
= container_of(dev
, struct ehea_port
, ofdev
.dev
);
2517 of_node_put(port
->ofdev
.node
);
2520 static int ehea_driver_sysfs_add(struct device
*dev
,
2521 struct device_driver
*driver
)
2525 ret
= sysfs_create_link(&driver
->kobj
, &dev
->kobj
,
2526 kobject_name(&dev
->kobj
));
2528 ret
= sysfs_create_link(&dev
->kobj
, &driver
->kobj
,
2531 sysfs_remove_link(&driver
->kobj
,
2532 kobject_name(&dev
->kobj
));
2537 static void ehea_driver_sysfs_remove(struct device
*dev
,
2538 struct device_driver
*driver
)
2540 struct device_driver
*drv
= driver
;
2543 sysfs_remove_link(&drv
->kobj
, kobject_name(&dev
->kobj
));
2544 sysfs_remove_link(&dev
->kobj
, "driver");
2548 static struct device
*ehea_register_port(struct ehea_port
*port
,
2549 struct device_node
*dn
)
2553 port
->ofdev
.node
= of_node_get(dn
);
2554 port
->ofdev
.dev
.parent
= &port
->adapter
->ebus_dev
->ofdev
.dev
;
2555 port
->ofdev
.dev
.bus
= &ibmebus_bus_type
;
2557 sprintf(port
->ofdev
.dev
.bus_id
, "port%d", port_name_cnt
++);
2558 port
->ofdev
.dev
.release
= logical_port_release
;
2560 ret
= of_device_register(&port
->ofdev
);
2562 ehea_error("failed to register device. ret=%d", ret
);
2566 ret
= device_create_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
2568 ehea_error("failed to register attributes, ret=%d", ret
);
2569 goto out_unreg_of_dev
;
2572 ret
= ehea_driver_sysfs_add(&port
->ofdev
.dev
, &ehea_driver
.driver
);
2574 ehea_error("failed to register sysfs driver link");
2575 goto out_rem_dev_file
;
2578 return &port
->ofdev
.dev
;
2581 device_remove_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
2583 of_device_unregister(&port
->ofdev
);
2588 static void ehea_unregister_port(struct ehea_port
*port
)
2590 ehea_driver_sysfs_remove(&port
->ofdev
.dev
, &ehea_driver
.driver
);
2591 device_remove_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
2592 of_device_unregister(&port
->ofdev
);
2595 struct ehea_port
*ehea_setup_single_port(struct ehea_adapter
*adapter
,
2596 u32 logical_port_id
,
2597 struct device_node
*dn
)
2600 struct net_device
*dev
;
2601 struct ehea_port
*port
;
2602 struct device
*port_dev
;
2605 /* allocate memory for the port structures */
2606 dev
= alloc_etherdev(sizeof(struct ehea_port
));
2609 ehea_error("no mem for net_device");
2614 port
= netdev_priv(dev
);
2616 sema_init(&port
->port_lock
, 1);
2617 port
->state
= EHEA_PORT_DOWN
;
2618 port
->sig_comp_iv
= sq_entries
/ 10;
2620 port
->adapter
= adapter
;
2622 port
->logical_port_id
= logical_port_id
;
2624 port
->msg_enable
= netif_msg_init(msg_level
, EHEA_MSG_DEFAULT
);
2626 port
->mc_list
= kzalloc(sizeof(struct ehea_mc_list
), GFP_KERNEL
);
2627 if (!port
->mc_list
) {
2629 goto out_free_ethdev
;
2632 INIT_LIST_HEAD(&port
->mc_list
->list
);
2634 ret
= ehea_sense_port_attr(port
);
2636 goto out_free_mc_list
;
2638 port_dev
= ehea_register_port(port
, dn
);
2640 goto out_free_mc_list
;
2642 SET_NETDEV_DEV(dev
, port_dev
);
2644 /* initialize net_device structure */
2645 SET_MODULE_OWNER(dev
);
2647 memcpy(dev
->dev_addr
, &port
->mac_addr
, ETH_ALEN
);
2649 dev
->open
= ehea_open
;
2650 #ifdef CONFIG_NET_POLL_CONTROLLER
2651 dev
->poll_controller
= ehea_netpoll
;
2653 dev
->stop
= ehea_stop
;
2654 dev
->hard_start_xmit
= ehea_start_xmit
;
2655 dev
->get_stats
= ehea_get_stats
;
2656 dev
->set_multicast_list
= ehea_set_multicast_list
;
2657 dev
->set_mac_address
= ehea_set_mac_addr
;
2658 dev
->change_mtu
= ehea_change_mtu
;
2659 dev
->vlan_rx_register
= ehea_vlan_rx_register
;
2660 dev
->vlan_rx_add_vid
= ehea_vlan_rx_add_vid
;
2661 dev
->vlan_rx_kill_vid
= ehea_vlan_rx_kill_vid
;
2662 dev
->features
= NETIF_F_SG
| NETIF_F_FRAGLIST
| NETIF_F_TSO
2663 | NETIF_F_HIGHDMA
| NETIF_F_HW_CSUM
| NETIF_F_HW_VLAN_TX
2664 | NETIF_F_HW_VLAN_RX
| NETIF_F_HW_VLAN_FILTER
2666 dev
->tx_timeout
= &ehea_tx_watchdog
;
2667 dev
->watchdog_timeo
= EHEA_WATCH_DOG_TIMEOUT
;
2669 INIT_WORK(&port
->reset_task
, ehea_reset_port
);
2671 ret
= ehea_broadcast_reg_helper(port
, H_REG_BCMC
);
2674 goto out_unreg_port
;
2677 ehea_set_ethtool_ops(dev
);
2679 ret
= register_netdev(dev
);
2681 ehea_error("register_netdev failed. ret=%d", ret
);
2685 ret
= ehea_get_jumboframe_status(port
, &jumbo
);
2687 ehea_error("failed determining jumbo frame status for %s",
2688 port
->netdev
->name
);
2690 ehea_info("%s: Jumbo frames are %sabled", dev
->name
,
2691 jumbo
== 1 ? "en" : "dis");
2693 adapter
->active_ports
++;
2698 ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
2701 ehea_unregister_port(port
);
2704 kfree(port
->mc_list
);
2710 ehea_error("setting up logical port with id=%d failed, ret=%d",
2711 logical_port_id
, ret
);
2715 static void ehea_shutdown_single_port(struct ehea_port
*port
)
2717 unregister_netdev(port
->netdev
);
2718 ehea_unregister_port(port
);
2719 ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
2720 kfree(port
->mc_list
);
2721 free_netdev(port
->netdev
);
2722 port
->adapter
->active_ports
--;
2725 static int ehea_setup_ports(struct ehea_adapter
*adapter
)
2727 struct device_node
*lhea_dn
;
2728 struct device_node
*eth_dn
= NULL
;
2730 const u32
*dn_log_port_id
;
2733 lhea_dn
= adapter
->ebus_dev
->ofdev
.node
;
2734 while ((eth_dn
= of_get_next_child(lhea_dn
, eth_dn
))) {
2736 dn_log_port_id
= of_get_property(eth_dn
, "ibm,hea-port-no",
2738 if (!dn_log_port_id
) {
2739 ehea_error("bad device node: eth_dn name=%s",
2744 if (ehea_add_adapter_mr(adapter
)) {
2745 ehea_error("creating MR failed");
2746 of_node_put(eth_dn
);
2750 adapter
->port
[i
] = ehea_setup_single_port(adapter
,
2753 if (adapter
->port
[i
])
2754 ehea_info("%s -> logical port id #%d",
2755 adapter
->port
[i
]->netdev
->name
,
2758 ehea_remove_adapter_mr(adapter
);
2766 static struct device_node
*ehea_get_eth_dn(struct ehea_adapter
*adapter
,
2767 u32 logical_port_id
)
2769 struct device_node
*lhea_dn
;
2770 struct device_node
*eth_dn
= NULL
;
2771 const u32
*dn_log_port_id
;
2773 lhea_dn
= adapter
->ebus_dev
->ofdev
.node
;
2774 while ((eth_dn
= of_get_next_child(lhea_dn
, eth_dn
))) {
2776 dn_log_port_id
= of_get_property(eth_dn
, "ibm,hea-port-no",
2779 if (*dn_log_port_id
== logical_port_id
)
2786 static ssize_t
ehea_probe_port(struct device
*dev
,
2787 struct device_attribute
*attr
,
2788 const char *buf
, size_t count
)
2790 struct ehea_adapter
*adapter
= dev
->driver_data
;
2791 struct ehea_port
*port
;
2792 struct device_node
*eth_dn
= NULL
;
2795 u32 logical_port_id
;
2797 sscanf(buf
, "%d", &logical_port_id
);
2799 port
= ehea_get_port(adapter
, logical_port_id
);
2802 ehea_info("adding port with logical port id=%d failed. port "
2803 "already configured as %s.", logical_port_id
,
2804 port
->netdev
->name
);
2808 eth_dn
= ehea_get_eth_dn(adapter
, logical_port_id
);
2811 ehea_info("no logical port with id %d found", logical_port_id
);
2815 if (ehea_add_adapter_mr(adapter
)) {
2816 ehea_error("creating MR failed");
2820 port
= ehea_setup_single_port(adapter
, logical_port_id
, eth_dn
);
2822 of_node_put(eth_dn
);
2825 for (i
=0; i
< EHEA_MAX_PORTS
; i
++)
2826 if (!adapter
->port
[i
]) {
2827 adapter
->port
[i
] = port
;
2831 ehea_info("added %s (logical port id=%d)", port
->netdev
->name
,
2834 ehea_remove_adapter_mr(adapter
);
2838 return (ssize_t
) count
;
2841 static ssize_t
ehea_remove_port(struct device
*dev
,
2842 struct device_attribute
*attr
,
2843 const char *buf
, size_t count
)
2845 struct ehea_adapter
*adapter
= dev
->driver_data
;
2846 struct ehea_port
*port
;
2848 u32 logical_port_id
;
2850 sscanf(buf
, "%d", &logical_port_id
);
2852 port
= ehea_get_port(adapter
, logical_port_id
);
2855 ehea_info("removed %s (logical port id=%d)", port
->netdev
->name
,
2858 ehea_shutdown_single_port(port
);
2860 for (i
=0; i
< EHEA_MAX_PORTS
; i
++)
2861 if (adapter
->port
[i
] == port
) {
2862 adapter
->port
[i
] = NULL
;
2866 ehea_error("removing port with logical port id=%d failed. port "
2867 "not configured.", logical_port_id
);
2871 ehea_remove_adapter_mr(adapter
);
2873 return (ssize_t
) count
;
2876 static DEVICE_ATTR(probe_port
, S_IWUSR
, NULL
, ehea_probe_port
);
2877 static DEVICE_ATTR(remove_port
, S_IWUSR
, NULL
, ehea_remove_port
);
2879 int ehea_create_device_sysfs(struct ibmebus_dev
*dev
)
2881 int ret
= device_create_file(&dev
->ofdev
.dev
, &dev_attr_probe_port
);
2885 ret
= device_create_file(&dev
->ofdev
.dev
, &dev_attr_remove_port
);
2890 void ehea_remove_device_sysfs(struct ibmebus_dev
*dev
)
2892 device_remove_file(&dev
->ofdev
.dev
, &dev_attr_probe_port
);
2893 device_remove_file(&dev
->ofdev
.dev
, &dev_attr_remove_port
);
2896 static int __devinit
ehea_probe_adapter(struct ibmebus_dev
*dev
,
2897 const struct of_device_id
*id
)
2899 struct ehea_adapter
*adapter
;
2900 const u64
*adapter_handle
;
2903 if (!dev
|| !dev
->ofdev
.node
) {
2904 ehea_error("Invalid ibmebus device probed");
2908 adapter
= kzalloc(sizeof(*adapter
), GFP_KERNEL
);
2911 dev_err(&dev
->ofdev
.dev
, "no mem for ehea_adapter\n");
2915 list_add(&adapter
->list
, &adapter_list
);
2917 adapter
->ebus_dev
= dev
;
2919 adapter_handle
= of_get_property(dev
->ofdev
.node
, "ibm,hea-handle",
2922 adapter
->handle
= *adapter_handle
;
2924 if (!adapter
->handle
) {
2925 dev_err(&dev
->ofdev
.dev
, "failed getting handle for adapter"
2926 " '%s'\n", dev
->ofdev
.node
->full_name
);
2931 adapter
->pd
= EHEA_PD_ID
;
2933 dev
->ofdev
.dev
.driver_data
= adapter
;
2936 /* initialize adapter and ports */
2937 /* get adapter properties */
2938 ret
= ehea_sense_adapter_attr(adapter
);
2940 dev_err(&dev
->ofdev
.dev
, "sense_adapter_attr failed: %d", ret
);
2944 adapter
->neq
= ehea_create_eq(adapter
,
2945 EHEA_NEQ
, EHEA_MAX_ENTRIES_EQ
, 1);
2946 if (!adapter
->neq
) {
2948 dev_err(&dev
->ofdev
.dev
, "NEQ creation failed");
2952 tasklet_init(&adapter
->neq_tasklet
, ehea_neq_tasklet
,
2953 (unsigned long)adapter
);
2955 ret
= ibmebus_request_irq(NULL
, adapter
->neq
->attr
.ist1
,
2956 ehea_interrupt_neq
, IRQF_DISABLED
,
2957 "ehea_neq", adapter
);
2959 dev_err(&dev
->ofdev
.dev
, "requesting NEQ IRQ failed");
2963 adapter
->ehea_wq
= create_workqueue("ehea_wq");
2964 if (!adapter
->ehea_wq
) {
2969 ret
= ehea_create_device_sysfs(dev
);
2973 ret
= ehea_setup_ports(adapter
);
2975 dev_err(&dev
->ofdev
.dev
, "setup_ports failed");
2976 goto out_rem_dev_sysfs
;
2983 ehea_remove_device_sysfs(dev
);
2986 destroy_workqueue(adapter
->ehea_wq
);
2989 ibmebus_free_irq(NULL
, adapter
->neq
->attr
.ist1
, adapter
);
2992 ehea_destroy_eq(adapter
->neq
);
3000 static int __devexit
ehea_remove(struct ibmebus_dev
*dev
)
3002 struct ehea_adapter
*adapter
= dev
->ofdev
.dev
.driver_data
;
3005 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3006 if (adapter
->port
[i
]) {
3007 ehea_shutdown_single_port(adapter
->port
[i
]);
3008 adapter
->port
[i
] = NULL
;
3011 ehea_remove_device_sysfs(dev
);
3013 destroy_workqueue(adapter
->ehea_wq
);
3015 ibmebus_free_irq(NULL
, adapter
->neq
->attr
.ist1
, adapter
);
3016 tasklet_kill(&adapter
->neq_tasklet
);
3018 ehea_destroy_eq(adapter
->neq
);
3019 ehea_remove_adapter_mr(adapter
);
3020 list_del(&adapter
->list
);
3027 static int check_module_parm(void)
3031 if ((rq1_entries
< EHEA_MIN_ENTRIES_QP
) ||
3032 (rq1_entries
> EHEA_MAX_ENTRIES_RQ1
)) {
3033 ehea_info("Bad parameter: rq1_entries");
3036 if ((rq2_entries
< EHEA_MIN_ENTRIES_QP
) ||
3037 (rq2_entries
> EHEA_MAX_ENTRIES_RQ2
)) {
3038 ehea_info("Bad parameter: rq2_entries");
3041 if ((rq3_entries
< EHEA_MIN_ENTRIES_QP
) ||
3042 (rq3_entries
> EHEA_MAX_ENTRIES_RQ3
)) {
3043 ehea_info("Bad parameter: rq3_entries");
3046 if ((sq_entries
< EHEA_MIN_ENTRIES_QP
) ||
3047 (sq_entries
> EHEA_MAX_ENTRIES_SQ
)) {
3048 ehea_info("Bad parameter: sq_entries");
3055 static ssize_t
ehea_show_capabilities(struct device_driver
*drv
,
3058 return sprintf(buf
, "%d", EHEA_CAPABILITIES
);
3061 static DRIVER_ATTR(capabilities
, S_IRUSR
| S_IRGRP
| S_IROTH
,
3062 ehea_show_capabilities
, NULL
);
3064 int __init
ehea_module_init(void)
3068 printk(KERN_INFO
"IBM eHEA ethernet device driver (Release %s)\n",
3071 ehea_driver_wq
= create_workqueue("ehea_driver_wq");
3073 INIT_WORK(&ehea_rereg_mr_task
, ehea_rereg_mrs
);
3075 ret
= check_module_parm();
3079 ret
= ehea_create_busmap();
3083 ret
= ibmebus_register_driver(&ehea_driver
);
3085 ehea_error("failed registering eHEA device driver on ebus");
3089 ret
= driver_create_file(&ehea_driver
.driver
,
3090 &driver_attr_capabilities
);
3092 ehea_error("failed to register capabilities attribute, ret=%d",
3094 ibmebus_unregister_driver(&ehea_driver
);
3102 static void __exit
ehea_module_exit(void)
3104 destroy_workqueue(ehea_driver_wq
);
3105 driver_remove_file(&ehea_driver
.driver
, &driver_attr_capabilities
);
3106 ibmebus_unregister_driver(&ehea_driver
);
3107 ehea_destroy_busmap();
3110 module_init(ehea_module_init
);
3111 module_exit(ehea_module_exit
);