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>
36 #include <linux/notifier.h>
37 #include <linux/reboot.h>
38 #include <linux/memory.h>
39 #include <asm/kexec.h>
40 #include <linux/mutex.h>
46 #include "ehea_phyp.h"
49 MODULE_LICENSE("GPL");
50 MODULE_AUTHOR("Christoph Raisch <raisch@de.ibm.com>");
51 MODULE_DESCRIPTION("IBM eServer HEA Driver");
52 MODULE_VERSION(DRV_VERSION
);
55 static int msg_level
= -1;
56 static int rq1_entries
= EHEA_DEF_ENTRIES_RQ1
;
57 static int rq2_entries
= EHEA_DEF_ENTRIES_RQ2
;
58 static int rq3_entries
= EHEA_DEF_ENTRIES_RQ3
;
59 static int sq_entries
= EHEA_DEF_ENTRIES_SQ
;
62 static int lro_max_aggr
= EHEA_LRO_MAX_AGGR
;
63 static int num_tx_qps
= EHEA_NUM_TX_QP
;
64 static int prop_carrier_state
;
66 module_param(msg_level
, int, 0);
67 module_param(rq1_entries
, int, 0);
68 module_param(rq2_entries
, int, 0);
69 module_param(rq3_entries
, int, 0);
70 module_param(sq_entries
, int, 0);
71 module_param(prop_carrier_state
, int, 0);
72 module_param(use_mcs
, int, 0);
73 module_param(use_lro
, int, 0);
74 module_param(lro_max_aggr
, int, 0);
75 module_param(num_tx_qps
, int, 0);
77 MODULE_PARM_DESC(num_tx_qps
, "Number of TX-QPS");
78 MODULE_PARM_DESC(msg_level
, "msg_level");
79 MODULE_PARM_DESC(prop_carrier_state
, "Propagate carrier state of physical "
80 "port to stack. 1:yes, 0:no. Default = 0 ");
81 MODULE_PARM_DESC(rq3_entries
, "Number of entries for Receive Queue 3 "
82 "[2^x - 1], x = [6..14]. Default = "
83 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ3
) ")");
84 MODULE_PARM_DESC(rq2_entries
, "Number of entries for Receive Queue 2 "
85 "[2^x - 1], x = [6..14]. Default = "
86 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ2
) ")");
87 MODULE_PARM_DESC(rq1_entries
, "Number of entries for Receive Queue 1 "
88 "[2^x - 1], x = [6..14]. Default = "
89 __MODULE_STRING(EHEA_DEF_ENTRIES_RQ1
) ")");
90 MODULE_PARM_DESC(sq_entries
, " Number of entries for the Send Queue "
91 "[2^x - 1], x = [6..14]. Default = "
92 __MODULE_STRING(EHEA_DEF_ENTRIES_SQ
) ")");
93 MODULE_PARM_DESC(use_mcs
, " 0:NAPI, 1:Multiple receive queues, Default = 0 ");
95 MODULE_PARM_DESC(lro_max_aggr
, " LRO: Max packets to be aggregated. Default = "
96 __MODULE_STRING(EHEA_LRO_MAX_AGGR
));
97 MODULE_PARM_DESC(use_lro
, " Large Receive Offload, 1: enable, 0: disable, "
100 static int port_name_cnt
;
101 static LIST_HEAD(adapter_list
);
102 static unsigned long ehea_driver_flags
;
103 struct work_struct ehea_rereg_mr_task
;
104 static DEFINE_MUTEX(dlpar_mem_lock
);
105 struct ehea_fw_handle_array ehea_fw_handles
;
106 struct ehea_bcmc_reg_array ehea_bcmc_regs
;
109 static int __devinit
ehea_probe_adapter(struct of_device
*dev
,
110 const struct of_device_id
*id
);
112 static int __devexit
ehea_remove(struct of_device
*dev
);
114 static struct of_device_id ehea_device_table
[] = {
117 .compatible
= "IBM,lhea",
121 MODULE_DEVICE_TABLE(of
, ehea_device_table
);
123 static struct of_platform_driver ehea_driver
= {
125 .match_table
= ehea_device_table
,
126 .probe
= ehea_probe_adapter
,
127 .remove
= ehea_remove
,
130 void ehea_dump(void *adr
, int len
, char *msg
)
133 unsigned char *deb
= adr
;
134 for (x
= 0; x
< len
; x
+= 16) {
135 printk(DRV_NAME
" %s adr=%p ofs=%04x %016lx %016lx\n", msg
,
136 deb
, x
, *((u64
*)&deb
[0]), *((u64
*)&deb
[8]));
141 void ehea_schedule_port_reset(struct ehea_port
*port
)
143 if (!test_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
))
144 schedule_work(&port
->reset_task
);
147 static void ehea_update_firmware_handles(void)
149 struct ehea_fw_handle_entry
*arr
= NULL
;
150 struct ehea_adapter
*adapter
;
151 int num_adapters
= 0;
155 int num_fw_handles
, k
, l
;
157 /* Determine number of handles */
158 list_for_each_entry(adapter
, &adapter_list
, list
) {
161 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
162 struct ehea_port
*port
= adapter
->port
[k
];
164 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
168 num_portres
+= port
->num_def_qps
+ port
->num_add_tx_qps
;
172 num_fw_handles
= num_adapters
* EHEA_NUM_ADAPTER_FW_HANDLES
+
173 num_ports
* EHEA_NUM_PORT_FW_HANDLES
+
174 num_portres
* EHEA_NUM_PORTRES_FW_HANDLES
;
176 if (num_fw_handles
) {
177 arr
= kzalloc(num_fw_handles
* sizeof(*arr
), GFP_KERNEL
);
179 return; /* Keep the existing array */
183 list_for_each_entry(adapter
, &adapter_list
, list
) {
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 l
< port
->num_def_qps
+ port
->num_add_tx_qps
;
193 struct ehea_port_res
*pr
= &port
->port_res
[l
];
195 arr
[i
].adh
= adapter
->handle
;
196 arr
[i
++].fwh
= pr
->qp
->fw_handle
;
197 arr
[i
].adh
= adapter
->handle
;
198 arr
[i
++].fwh
= pr
->send_cq
->fw_handle
;
199 arr
[i
].adh
= adapter
->handle
;
200 arr
[i
++].fwh
= pr
->recv_cq
->fw_handle
;
201 arr
[i
].adh
= adapter
->handle
;
202 arr
[i
++].fwh
= pr
->eq
->fw_handle
;
203 arr
[i
].adh
= adapter
->handle
;
204 arr
[i
++].fwh
= pr
->send_mr
.handle
;
205 arr
[i
].adh
= adapter
->handle
;
206 arr
[i
++].fwh
= pr
->recv_mr
.handle
;
208 arr
[i
].adh
= adapter
->handle
;
209 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
;
222 kfree(ehea_fw_handles
.arr
);
223 ehea_fw_handles
.arr
= arr
;
224 ehea_fw_handles
.num_entries
= i
;
227 static void ehea_update_bcmc_registrations(void)
229 struct ehea_bcmc_reg_entry
*arr
= NULL
;
230 struct ehea_adapter
*adapter
;
231 struct ehea_mc_list
*mc_entry
;
232 int num_registrations
= 0;
236 /* Determine number of registrations */
237 list_for_each_entry(adapter
, &adapter_list
, list
)
238 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
239 struct ehea_port
*port
= adapter
->port
[k
];
241 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
244 num_registrations
+= 2; /* Broadcast registrations */
246 list_for_each_entry(mc_entry
, &port
->mc_list
->list
,list
)
247 num_registrations
+= 2;
250 if (num_registrations
) {
251 arr
= kzalloc(num_registrations
* sizeof(*arr
), GFP_ATOMIC
);
253 return; /* Keep the existing array */
257 list_for_each_entry(adapter
, &adapter_list
, list
) {
258 for (k
= 0; k
< EHEA_MAX_PORTS
; k
++) {
259 struct ehea_port
*port
= adapter
->port
[k
];
261 if (!port
|| (port
->state
!= EHEA_PORT_UP
))
264 arr
[i
].adh
= adapter
->handle
;
265 arr
[i
].port_id
= port
->logical_port_id
;
266 arr
[i
].reg_type
= EHEA_BCMC_BROADCAST
|
268 arr
[i
++].macaddr
= port
->mac_addr
;
270 arr
[i
].adh
= adapter
->handle
;
271 arr
[i
].port_id
= port
->logical_port_id
;
272 arr
[i
].reg_type
= EHEA_BCMC_BROADCAST
|
273 EHEA_BCMC_VLANID_ALL
;
274 arr
[i
++].macaddr
= port
->mac_addr
;
276 list_for_each_entry(mc_entry
,
277 &port
->mc_list
->list
, list
) {
278 arr
[i
].adh
= adapter
->handle
;
279 arr
[i
].port_id
= port
->logical_port_id
;
280 arr
[i
].reg_type
= EHEA_BCMC_SCOPE_ALL
|
281 EHEA_BCMC_MULTICAST
|
283 arr
[i
++].macaddr
= mc_entry
->macaddr
;
285 arr
[i
].adh
= adapter
->handle
;
286 arr
[i
].port_id
= port
->logical_port_id
;
287 arr
[i
].reg_type
= EHEA_BCMC_SCOPE_ALL
|
288 EHEA_BCMC_MULTICAST
|
289 EHEA_BCMC_VLANID_ALL
;
290 arr
[i
++].macaddr
= mc_entry
->macaddr
;
296 kfree(ehea_bcmc_regs
.arr
);
297 ehea_bcmc_regs
.arr
= arr
;
298 ehea_bcmc_regs
.num_entries
= i
;
301 static struct net_device_stats
*ehea_get_stats(struct net_device
*dev
)
303 struct ehea_port
*port
= netdev_priv(dev
);
304 struct net_device_stats
*stats
= &port
->stats
;
305 struct hcp_ehea_port_cb2
*cb2
;
306 u64 hret
, rx_packets
, tx_packets
;
309 memset(stats
, 0, sizeof(*stats
));
311 cb2
= kzalloc(PAGE_SIZE
, GFP_ATOMIC
);
313 ehea_error("no mem for cb2");
317 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
318 port
->logical_port_id
,
319 H_PORT_CB2
, H_PORT_CB2_ALL
, cb2
);
320 if (hret
!= H_SUCCESS
) {
321 ehea_error("query_ehea_port failed");
325 if (netif_msg_hw(port
))
326 ehea_dump(cb2
, sizeof(*cb2
), "net_device_stats");
329 for (i
= 0; i
< port
->num_def_qps
; i
++)
330 rx_packets
+= port
->port_res
[i
].rx_packets
;
333 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++)
334 tx_packets
+= port
->port_res
[i
].tx_packets
;
336 stats
->tx_packets
= tx_packets
;
337 stats
->multicast
= cb2
->rxmcp
;
338 stats
->rx_errors
= cb2
->rxuerr
;
339 stats
->rx_bytes
= cb2
->rxo
;
340 stats
->tx_bytes
= cb2
->txo
;
341 stats
->rx_packets
= rx_packets
;
349 static void ehea_refill_rq1(struct ehea_port_res
*pr
, int index
, int nr_of_wqes
)
351 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
352 struct net_device
*dev
= pr
->port
->netdev
;
353 int max_index_mask
= pr
->rq1_skba
.len
- 1;
354 int fill_wqes
= pr
->rq1_skba
.os_skbs
+ nr_of_wqes
;
358 pr
->rq1_skba
.os_skbs
= 0;
360 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
362 pr
->rq1_skba
.index
= index
;
363 pr
->rq1_skba
.os_skbs
= fill_wqes
;
367 for (i
= 0; i
< fill_wqes
; i
++) {
368 if (!skb_arr_rq1
[index
]) {
369 skb_arr_rq1
[index
] = netdev_alloc_skb(dev
,
371 if (!skb_arr_rq1
[index
]) {
372 pr
->rq1_skba
.os_skbs
= fill_wqes
- i
;
373 ehea_error("%s: no mem for skb/%d wqes filled",
379 index
&= max_index_mask
;
387 ehea_update_rq1a(pr
->qp
, adder
);
390 static int ehea_init_fill_rq1(struct ehea_port_res
*pr
, int nr_rq1a
)
393 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
394 struct net_device
*dev
= pr
->port
->netdev
;
397 for (i
= 0; i
< pr
->rq1_skba
.len
; i
++) {
398 skb_arr_rq1
[i
] = netdev_alloc_skb(dev
, EHEA_L_PKT_SIZE
);
399 if (!skb_arr_rq1
[i
]) {
400 ehea_error("%s: no mem for skb/%d wqes filled",
407 ehea_update_rq1a(pr
->qp
, nr_rq1a
);
412 static int ehea_refill_rq_def(struct ehea_port_res
*pr
,
413 struct ehea_q_skb_arr
*q_skba
, int rq_nr
,
414 int num_wqes
, int wqe_type
, int packet_size
)
416 struct net_device
*dev
= pr
->port
->netdev
;
417 struct ehea_qp
*qp
= pr
->qp
;
418 struct sk_buff
**skb_arr
= q_skba
->arr
;
419 struct ehea_rwqe
*rwqe
;
420 int i
, index
, max_index_mask
, fill_wqes
;
424 fill_wqes
= q_skba
->os_skbs
+ num_wqes
;
427 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
428 q_skba
->os_skbs
= fill_wqes
;
432 index
= q_skba
->index
;
433 max_index_mask
= q_skba
->len
- 1;
434 for (i
= 0; i
< fill_wqes
; i
++) {
436 struct sk_buff
*skb
= netdev_alloc_skb(dev
, packet_size
);
438 ehea_error("%s: no mem for skb/%d wqes filled",
439 pr
->port
->netdev
->name
, i
);
440 q_skba
->os_skbs
= fill_wqes
- i
;
444 skb_reserve(skb
, NET_IP_ALIGN
);
446 skb_arr
[index
] = skb
;
447 tmp_addr
= ehea_map_vaddr(skb
->data
);
448 if (tmp_addr
== -1) {
450 q_skba
->os_skbs
= fill_wqes
- i
;
455 rwqe
= ehea_get_next_rwqe(qp
, rq_nr
);
456 rwqe
->wr_id
= EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, wqe_type
)
457 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX
, index
);
458 rwqe
->sg_list
[0].l_key
= pr
->recv_mr
.lkey
;
459 rwqe
->sg_list
[0].vaddr
= tmp_addr
;
460 rwqe
->sg_list
[0].len
= packet_size
;
461 rwqe
->data_segments
= 1;
464 index
&= max_index_mask
;
468 q_skba
->index
= index
;
475 ehea_update_rq2a(pr
->qp
, adder
);
477 ehea_update_rq3a(pr
->qp
, adder
);
483 static int ehea_refill_rq2(struct ehea_port_res
*pr
, int nr_of_wqes
)
485 return ehea_refill_rq_def(pr
, &pr
->rq2_skba
, 2,
486 nr_of_wqes
, EHEA_RWQE2_TYPE
,
487 EHEA_RQ2_PKT_SIZE
+ NET_IP_ALIGN
);
491 static int ehea_refill_rq3(struct ehea_port_res
*pr
, int nr_of_wqes
)
493 return ehea_refill_rq_def(pr
, &pr
->rq3_skba
, 3,
494 nr_of_wqes
, EHEA_RWQE3_TYPE
,
495 EHEA_MAX_PACKET_SIZE
+ NET_IP_ALIGN
);
498 static inline int ehea_check_cqe(struct ehea_cqe
*cqe
, int *rq_num
)
500 *rq_num
= (cqe
->type
& EHEA_CQE_TYPE_RQ
) >> 5;
501 if ((cqe
->status
& EHEA_CQE_STAT_ERR_MASK
) == 0)
503 if (((cqe
->status
& EHEA_CQE_STAT_ERR_TCP
) != 0) &&
504 (cqe
->header_length
== 0))
509 static inline void ehea_fill_skb(struct net_device
*dev
,
510 struct sk_buff
*skb
, struct ehea_cqe
*cqe
)
512 int length
= cqe
->num_bytes_transfered
- 4; /*remove CRC */
514 skb_put(skb
, length
);
515 skb
->ip_summed
= CHECKSUM_UNNECESSARY
;
516 skb
->protocol
= eth_type_trans(skb
, dev
);
519 static inline struct sk_buff
*get_skb_by_index(struct sk_buff
**skb_array
,
521 struct ehea_cqe
*cqe
)
523 int skb_index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, cqe
->wr_id
);
533 prefetchw(pref
+ EHEA_CACHE_LINE
);
535 pref
= (skb_array
[x
]->data
);
537 prefetch(pref
+ EHEA_CACHE_LINE
);
538 prefetch(pref
+ EHEA_CACHE_LINE
* 2);
539 prefetch(pref
+ EHEA_CACHE_LINE
* 3);
540 skb
= skb_array
[skb_index
];
541 skb_array
[skb_index
] = NULL
;
545 static inline struct sk_buff
*get_skb_by_index_ll(struct sk_buff
**skb_array
,
546 int arr_len
, int wqe_index
)
557 prefetchw(pref
+ EHEA_CACHE_LINE
);
559 pref
= (skb_array
[x
]->data
);
561 prefetchw(pref
+ EHEA_CACHE_LINE
);
563 skb
= skb_array
[wqe_index
];
564 skb_array
[wqe_index
] = NULL
;
568 static int ehea_treat_poll_error(struct ehea_port_res
*pr
, int rq
,
569 struct ehea_cqe
*cqe
, int *processed_rq2
,
574 if (cqe
->status
& EHEA_CQE_STAT_ERR_TCP
)
575 pr
->p_stats
.err_tcp_cksum
++;
576 if (cqe
->status
& EHEA_CQE_STAT_ERR_IP
)
577 pr
->p_stats
.err_ip_cksum
++;
578 if (cqe
->status
& EHEA_CQE_STAT_ERR_CRC
)
579 pr
->p_stats
.err_frame_crc
++;
583 skb
= get_skb_by_index(pr
->rq2_skba
.arr
, pr
->rq2_skba
.len
, cqe
);
585 } else if (rq
== 3) {
587 skb
= get_skb_by_index(pr
->rq3_skba
.arr
, pr
->rq3_skba
.len
, cqe
);
591 if (cqe
->status
& EHEA_CQE_STAT_FAT_ERR_MASK
) {
592 if (netif_msg_rx_err(pr
->port
)) {
593 ehea_error("Critical receive error for QP %d. "
594 "Resetting port.", pr
->qp
->init_attr
.qp_nr
);
595 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
597 ehea_schedule_port_reset(pr
->port
);
604 static int get_skb_hdr(struct sk_buff
*skb
, void **iphdr
,
605 void **tcph
, u64
*hdr_flags
, void *priv
)
607 struct ehea_cqe
*cqe
= priv
;
611 /* non tcp/udp packets */
612 if (!cqe
->header_length
)
616 skb_reset_network_header(skb
);
618 if (iph
->protocol
!= IPPROTO_TCP
)
621 ip_len
= ip_hdrlen(skb
);
622 skb_set_transport_header(skb
, ip_len
);
623 *tcph
= tcp_hdr(skb
);
625 /* check if ip header and tcp header are complete */
626 if (ntohs(iph
->tot_len
) < ip_len
+ tcp_hdrlen(skb
))
629 *hdr_flags
= LRO_IPV4
| LRO_TCP
;
635 static void ehea_proc_skb(struct ehea_port_res
*pr
, struct ehea_cqe
*cqe
,
638 int vlan_extracted
= (cqe
->status
& EHEA_CQE_VLAN_TAG_XTRACT
)
643 lro_vlan_hwaccel_receive_skb(&pr
->lro_mgr
, skb
,
648 lro_receive_skb(&pr
->lro_mgr
, skb
, cqe
);
651 vlan_hwaccel_receive_skb(skb
, pr
->port
->vgrp
,
654 netif_receive_skb(skb
);
658 static int ehea_proc_rwqes(struct net_device
*dev
,
659 struct ehea_port_res
*pr
,
662 struct ehea_port
*port
= pr
->port
;
663 struct ehea_qp
*qp
= pr
->qp
;
664 struct ehea_cqe
*cqe
;
666 struct sk_buff
**skb_arr_rq1
= pr
->rq1_skba
.arr
;
667 struct sk_buff
**skb_arr_rq2
= pr
->rq2_skba
.arr
;
668 struct sk_buff
**skb_arr_rq3
= pr
->rq3_skba
.arr
;
669 int skb_arr_rq1_len
= pr
->rq1_skba
.len
;
670 int skb_arr_rq2_len
= pr
->rq2_skba
.len
;
671 int skb_arr_rq3_len
= pr
->rq3_skba
.len
;
672 int processed
, processed_rq1
, processed_rq2
, processed_rq3
;
673 int wqe_index
, last_wqe_index
, rq
, port_reset
;
675 processed
= processed_rq1
= processed_rq2
= processed_rq3
= 0;
678 cqe
= ehea_poll_rq1(qp
, &wqe_index
);
679 while ((processed
< budget
) && cqe
) {
683 if (netif_msg_rx_status(port
))
684 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
686 last_wqe_index
= wqe_index
;
688 if (!ehea_check_cqe(cqe
, &rq
)) {
691 skb
= get_skb_by_index_ll(skb_arr_rq1
,
694 if (unlikely(!skb
)) {
695 if (netif_msg_rx_err(port
))
696 ehea_error("LL rq1: skb=NULL");
698 skb
= netdev_alloc_skb(dev
,
703 skb_copy_to_linear_data(skb
, ((char *)cqe
) + 64,
704 cqe
->num_bytes_transfered
- 4);
705 ehea_fill_skb(dev
, skb
, cqe
);
706 } else if (rq
== 2) {
708 skb
= get_skb_by_index(skb_arr_rq2
,
709 skb_arr_rq2_len
, cqe
);
710 if (unlikely(!skb
)) {
711 if (netif_msg_rx_err(port
))
712 ehea_error("rq2: skb=NULL");
715 ehea_fill_skb(dev
, skb
, cqe
);
719 skb
= get_skb_by_index(skb_arr_rq3
,
720 skb_arr_rq3_len
, cqe
);
721 if (unlikely(!skb
)) {
722 if (netif_msg_rx_err(port
))
723 ehea_error("rq3: skb=NULL");
726 ehea_fill_skb(dev
, skb
, cqe
);
730 ehea_proc_skb(pr
, cqe
, skb
);
732 pr
->p_stats
.poll_receive_errors
++;
733 port_reset
= ehea_treat_poll_error(pr
, rq
, cqe
,
739 cqe
= ehea_poll_rq1(qp
, &wqe_index
);
742 lro_flush_all(&pr
->lro_mgr
);
744 pr
->rx_packets
+= processed
;
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 static struct ehea_cqe
*ehea_proc_cqes(struct ehea_port_res
*pr
, int my_quota
)
756 struct ehea_cq
*send_cq
= pr
->send_cq
;
757 struct ehea_cqe
*cqe
;
758 int quota
= my_quota
;
764 cqe
= ehea_poll_cq(send_cq
);
765 while (cqe
&& (quota
> 0)) {
766 ehea_inc_cq(send_cq
);
770 if (cqe
->status
& EHEA_CQE_STAT_ERR_MASK
) {
771 ehea_error("Send Completion Error: Resetting port");
772 if (netif_msg_tx_err(pr
->port
))
773 ehea_dump(cqe
, sizeof(*cqe
), "Send CQE");
774 ehea_schedule_port_reset(pr
->port
);
778 if (netif_msg_tx_done(pr
->port
))
779 ehea_dump(cqe
, sizeof(*cqe
), "CQE");
781 if (likely(EHEA_BMASK_GET(EHEA_WR_ID_TYPE
, cqe
->wr_id
)
782 == EHEA_SWQE2_TYPE
)) {
784 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, cqe
->wr_id
);
785 skb
= pr
->sq_skba
.arr
[index
];
787 pr
->sq_skba
.arr
[index
] = NULL
;
790 swqe_av
+= EHEA_BMASK_GET(EHEA_WR_ID_REFILL
, cqe
->wr_id
);
793 cqe
= ehea_poll_cq(send_cq
);
796 ehea_update_feca(send_cq
, cqe_counter
);
797 atomic_add(swqe_av
, &pr
->swqe_avail
);
799 spin_lock_irqsave(&pr
->netif_queue
, flags
);
801 if (pr
->queue_stopped
&& (atomic_read(&pr
->swqe_avail
)
802 >= pr
->swqe_refill_th
)) {
803 netif_wake_queue(pr
->port
->netdev
);
804 pr
->queue_stopped
= 0;
806 spin_unlock_irqrestore(&pr
->netif_queue
, flags
);
811 #define EHEA_NAPI_POLL_NUM_BEFORE_IRQ 16
812 #define EHEA_POLL_MAX_CQES 65535
814 static int ehea_poll(struct napi_struct
*napi
, int budget
)
816 struct ehea_port_res
*pr
= container_of(napi
, struct ehea_port_res
,
818 struct net_device
*dev
= pr
->port
->netdev
;
819 struct ehea_cqe
*cqe
;
820 struct ehea_cqe
*cqe_skb
= NULL
;
821 int force_irq
, wqe_index
;
824 force_irq
= (pr
->poll_counter
> EHEA_NAPI_POLL_NUM_BEFORE_IRQ
);
825 cqe_skb
= ehea_proc_cqes(pr
, EHEA_POLL_MAX_CQES
);
828 rx
+= ehea_proc_rwqes(dev
, pr
, budget
- rx
);
830 while ((rx
!= budget
) || force_irq
) {
831 pr
->poll_counter
= 0;
833 netif_rx_complete(napi
);
834 ehea_reset_cq_ep(pr
->recv_cq
);
835 ehea_reset_cq_ep(pr
->send_cq
);
836 ehea_reset_cq_n1(pr
->recv_cq
);
837 ehea_reset_cq_n1(pr
->send_cq
);
838 cqe
= ehea_poll_rq1(pr
->qp
, &wqe_index
);
839 cqe_skb
= ehea_poll_cq(pr
->send_cq
);
841 if (!cqe
&& !cqe_skb
)
844 if (!netif_rx_reschedule(napi
))
847 cqe_skb
= ehea_proc_cqes(pr
, EHEA_POLL_MAX_CQES
);
848 rx
+= ehea_proc_rwqes(dev
, pr
, budget
- rx
);
855 #ifdef CONFIG_NET_POLL_CONTROLLER
856 static void ehea_netpoll(struct net_device
*dev
)
858 struct ehea_port
*port
= netdev_priv(dev
);
861 for (i
= 0; i
< port
->num_def_qps
; i
++)
862 netif_rx_schedule(&port
->port_res
[i
].napi
);
866 static irqreturn_t
ehea_recv_irq_handler(int irq
, void *param
)
868 struct ehea_port_res
*pr
= param
;
870 netif_rx_schedule(&pr
->napi
);
875 static irqreturn_t
ehea_qp_aff_irq_handler(int irq
, void *param
)
877 struct ehea_port
*port
= param
;
878 struct ehea_eqe
*eqe
;
882 eqe
= ehea_poll_eq(port
->qp_eq
);
885 qp_token
= EHEA_BMASK_GET(EHEA_EQE_QP_TOKEN
, eqe
->entry
);
886 ehea_error("QP aff_err: entry=0x%lx, token=0x%x",
887 eqe
->entry
, qp_token
);
889 qp
= port
->port_res
[qp_token
].qp
;
890 ehea_error_data(port
->adapter
, qp
->fw_handle
);
891 eqe
= ehea_poll_eq(port
->qp_eq
);
894 ehea_schedule_port_reset(port
);
899 static struct ehea_port
*ehea_get_port(struct ehea_adapter
*adapter
,
904 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
905 if (adapter
->port
[i
])
906 if (adapter
->port
[i
]->logical_port_id
== logical_port
)
907 return adapter
->port
[i
];
911 int ehea_sense_port_attr(struct ehea_port
*port
)
915 struct hcp_ehea_port_cb0
*cb0
;
917 /* may be called via ehea_neq_tasklet() */
918 cb0
= kzalloc(PAGE_SIZE
, GFP_ATOMIC
);
920 ehea_error("no mem for cb0");
925 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
926 port
->logical_port_id
, H_PORT_CB0
,
927 EHEA_BMASK_SET(H_PORT_CB0_ALL
, 0xFFFF),
929 if (hret
!= H_SUCCESS
) {
935 port
->mac_addr
= cb0
->port_mac_addr
<< 16;
937 if (!is_valid_ether_addr((u8
*)&port
->mac_addr
)) {
938 ret
= -EADDRNOTAVAIL
;
943 switch (cb0
->port_speed
) {
945 port
->port_speed
= EHEA_SPEED_10M
;
946 port
->full_duplex
= 0;
949 port
->port_speed
= EHEA_SPEED_10M
;
950 port
->full_duplex
= 1;
953 port
->port_speed
= EHEA_SPEED_100M
;
954 port
->full_duplex
= 0;
957 port
->port_speed
= EHEA_SPEED_100M
;
958 port
->full_duplex
= 1;
961 port
->port_speed
= EHEA_SPEED_1G
;
962 port
->full_duplex
= 1;
965 port
->port_speed
= EHEA_SPEED_10G
;
966 port
->full_duplex
= 1;
969 port
->port_speed
= 0;
970 port
->full_duplex
= 0;
975 port
->num_mcs
= cb0
->num_default_qps
;
977 /* Number of default QPs */
979 port
->num_def_qps
= cb0
->num_default_qps
;
981 port
->num_def_qps
= 1;
983 if (!port
->num_def_qps
) {
988 port
->num_tx_qps
= num_tx_qps
;
990 if (port
->num_def_qps
>= port
->num_tx_qps
)
991 port
->num_add_tx_qps
= 0;
993 port
->num_add_tx_qps
= port
->num_tx_qps
- port
->num_def_qps
;
997 if (ret
|| netif_msg_probe(port
))
998 ehea_dump(cb0
, sizeof(*cb0
), "ehea_sense_port_attr");
1004 int ehea_set_portspeed(struct ehea_port
*port
, u32 port_speed
)
1006 struct hcp_ehea_port_cb4
*cb4
;
1010 cb4
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
1012 ehea_error("no mem for cb4");
1017 cb4
->port_speed
= port_speed
;
1019 netif_carrier_off(port
->netdev
);
1021 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1022 port
->logical_port_id
,
1023 H_PORT_CB4
, H_PORT_CB4_SPEED
, cb4
);
1024 if (hret
== H_SUCCESS
) {
1025 port
->autoneg
= port_speed
== EHEA_SPEED_AUTONEG
? 1 : 0;
1027 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
1028 port
->logical_port_id
,
1029 H_PORT_CB4
, H_PORT_CB4_SPEED
,
1031 if (hret
== H_SUCCESS
) {
1032 switch (cb4
->port_speed
) {
1034 port
->port_speed
= EHEA_SPEED_10M
;
1035 port
->full_duplex
= 0;
1038 port
->port_speed
= EHEA_SPEED_10M
;
1039 port
->full_duplex
= 1;
1041 case H_SPEED_100M_H
:
1042 port
->port_speed
= EHEA_SPEED_100M
;
1043 port
->full_duplex
= 0;
1045 case H_SPEED_100M_F
:
1046 port
->port_speed
= EHEA_SPEED_100M
;
1047 port
->full_duplex
= 1;
1050 port
->port_speed
= EHEA_SPEED_1G
;
1051 port
->full_duplex
= 1;
1054 port
->port_speed
= EHEA_SPEED_10G
;
1055 port
->full_duplex
= 1;
1058 port
->port_speed
= 0;
1059 port
->full_duplex
= 0;
1063 ehea_error("Failed sensing port speed");
1067 if (hret
== H_AUTHORITY
) {
1068 ehea_info("Hypervisor denied setting port speed");
1072 ehea_error("Failed setting port speed");
1075 if (!prop_carrier_state
|| (port
->phy_link
== EHEA_PHY_LINK_UP
))
1076 netif_carrier_on(port
->netdev
);
1083 static void ehea_parse_eqe(struct ehea_adapter
*adapter
, u64 eqe
)
1088 struct ehea_port
*port
;
1090 ec
= EHEA_BMASK_GET(NEQE_EVENT_CODE
, eqe
);
1091 portnum
= EHEA_BMASK_GET(NEQE_PORTNUM
, eqe
);
1092 port
= ehea_get_port(adapter
, portnum
);
1095 case EHEA_EC_PORTSTATE_CHG
: /* port state change */
1098 ehea_error("unknown portnum %x", portnum
);
1102 if (EHEA_BMASK_GET(NEQE_PORT_UP
, eqe
)) {
1103 if (!netif_carrier_ok(port
->netdev
)) {
1104 ret
= ehea_sense_port_attr(port
);
1106 ehea_error("failed resensing port "
1111 if (netif_msg_link(port
))
1112 ehea_info("%s: Logical port up: %dMbps "
1116 port
->full_duplex
==
1117 1 ? "Full" : "Half");
1119 netif_carrier_on(port
->netdev
);
1120 netif_wake_queue(port
->netdev
);
1123 if (netif_carrier_ok(port
->netdev
)) {
1124 if (netif_msg_link(port
))
1125 ehea_info("%s: Logical port down",
1126 port
->netdev
->name
);
1127 netif_carrier_off(port
->netdev
);
1128 netif_stop_queue(port
->netdev
);
1131 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PORT_UP
, eqe
)) {
1132 port
->phy_link
= EHEA_PHY_LINK_UP
;
1133 if (netif_msg_link(port
))
1134 ehea_info("%s: Physical port up",
1135 port
->netdev
->name
);
1136 if (prop_carrier_state
)
1137 netif_carrier_on(port
->netdev
);
1139 port
->phy_link
= EHEA_PHY_LINK_DOWN
;
1140 if (netif_msg_link(port
))
1141 ehea_info("%s: Physical port down",
1142 port
->netdev
->name
);
1143 if (prop_carrier_state
)
1144 netif_carrier_off(port
->netdev
);
1147 if (EHEA_BMASK_GET(NEQE_EXTSWITCH_PRIMARY
, eqe
))
1148 ehea_info("External switch port is primary port");
1150 ehea_info("External switch port is backup port");
1153 case EHEA_EC_ADAPTER_MALFUNC
:
1154 ehea_error("Adapter malfunction");
1156 case EHEA_EC_PORT_MALFUNC
:
1157 ehea_info("Port malfunction: Device: %s", port
->netdev
->name
);
1158 netif_carrier_off(port
->netdev
);
1159 netif_stop_queue(port
->netdev
);
1162 ehea_error("unknown event code %x, eqe=0x%lX", ec
, eqe
);
1167 static void ehea_neq_tasklet(unsigned long data
)
1169 struct ehea_adapter
*adapter
= (struct ehea_adapter
*)data
;
1170 struct ehea_eqe
*eqe
;
1173 eqe
= ehea_poll_eq(adapter
->neq
);
1174 ehea_debug("eqe=%p", eqe
);
1177 ehea_debug("*eqe=%lx", eqe
->entry
);
1178 ehea_parse_eqe(adapter
, eqe
->entry
);
1179 eqe
= ehea_poll_eq(adapter
->neq
);
1180 ehea_debug("next eqe=%p", eqe
);
1183 event_mask
= EHEA_BMASK_SET(NELR_PORTSTATE_CHG
, 1)
1184 | EHEA_BMASK_SET(NELR_ADAPTER_MALFUNC
, 1)
1185 | EHEA_BMASK_SET(NELR_PORT_MALFUNC
, 1);
1187 ehea_h_reset_events(adapter
->handle
,
1188 adapter
->neq
->fw_handle
, event_mask
);
1191 static irqreturn_t
ehea_interrupt_neq(int irq
, void *param
)
1193 struct ehea_adapter
*adapter
= param
;
1194 tasklet_hi_schedule(&adapter
->neq_tasklet
);
1199 static int ehea_fill_port_res(struct ehea_port_res
*pr
)
1202 struct ehea_qp_init_attr
*init_attr
= &pr
->qp
->init_attr
;
1204 ret
= ehea_init_fill_rq1(pr
, init_attr
->act_nr_rwqes_rq1
1205 - init_attr
->act_nr_rwqes_rq2
1206 - init_attr
->act_nr_rwqes_rq3
- 1);
1208 ret
|= ehea_refill_rq2(pr
, init_attr
->act_nr_rwqes_rq2
- 1);
1210 ret
|= ehea_refill_rq3(pr
, init_attr
->act_nr_rwqes_rq3
- 1);
1215 static int ehea_reg_interrupts(struct net_device
*dev
)
1217 struct ehea_port
*port
= netdev_priv(dev
);
1218 struct ehea_port_res
*pr
;
1222 snprintf(port
->int_aff_name
, EHEA_IRQ_NAME_SIZE
- 1, "%s-aff",
1225 ret
= ibmebus_request_irq(port
->qp_eq
->attr
.ist1
,
1226 ehea_qp_aff_irq_handler
,
1227 IRQF_DISABLED
, port
->int_aff_name
, port
);
1229 ehea_error("failed registering irq for qp_aff_irq_handler:"
1230 "ist=%X", port
->qp_eq
->attr
.ist1
);
1234 if (netif_msg_ifup(port
))
1235 ehea_info("irq_handle 0x%X for function qp_aff_irq_handler "
1236 "registered", port
->qp_eq
->attr
.ist1
);
1239 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
1240 pr
= &port
->port_res
[i
];
1241 snprintf(pr
->int_send_name
, EHEA_IRQ_NAME_SIZE
- 1,
1242 "%s-queue%d", dev
->name
, i
);
1243 ret
= ibmebus_request_irq(pr
->eq
->attr
.ist1
,
1244 ehea_recv_irq_handler
,
1245 IRQF_DISABLED
, pr
->int_send_name
,
1248 ehea_error("failed registering irq for ehea_queue "
1249 "port_res_nr:%d, ist=%X", i
,
1253 if (netif_msg_ifup(port
))
1254 ehea_info("irq_handle 0x%X for function ehea_queue_int "
1255 "%d registered", pr
->eq
->attr
.ist1
, i
);
1263 u32 ist
= port
->port_res
[i
].eq
->attr
.ist1
;
1264 ibmebus_free_irq(ist
, &port
->port_res
[i
]);
1268 ibmebus_free_irq(port
->qp_eq
->attr
.ist1
, port
);
1269 i
= port
->num_def_qps
;
1275 static void ehea_free_interrupts(struct net_device
*dev
)
1277 struct ehea_port
*port
= netdev_priv(dev
);
1278 struct ehea_port_res
*pr
;
1283 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
1284 pr
= &port
->port_res
[i
];
1285 ibmebus_free_irq(pr
->eq
->attr
.ist1
, pr
);
1286 if (netif_msg_intr(port
))
1287 ehea_info("free send irq for res %d with handle 0x%X",
1288 i
, pr
->eq
->attr
.ist1
);
1291 /* associated events */
1292 ibmebus_free_irq(port
->qp_eq
->attr
.ist1
, port
);
1293 if (netif_msg_intr(port
))
1294 ehea_info("associated event interrupt for handle 0x%X freed",
1295 port
->qp_eq
->attr
.ist1
);
1298 static int ehea_configure_port(struct ehea_port
*port
)
1302 struct hcp_ehea_port_cb0
*cb0
;
1305 cb0
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
1309 cb0
->port_rc
= EHEA_BMASK_SET(PXLY_RC_VALID
, 1)
1310 | EHEA_BMASK_SET(PXLY_RC_IP_CHKSUM
, 1)
1311 | EHEA_BMASK_SET(PXLY_RC_TCP_UDP_CHKSUM
, 1)
1312 | EHEA_BMASK_SET(PXLY_RC_VLAN_XTRACT
, 1)
1313 | EHEA_BMASK_SET(PXLY_RC_VLAN_TAG_FILTER
,
1314 PXLY_RC_VLAN_FILTER
)
1315 | EHEA_BMASK_SET(PXLY_RC_JUMBO_FRAME
, 1);
1317 for (i
= 0; i
< port
->num_mcs
; i
++)
1319 cb0
->default_qpn_arr
[i
] =
1320 port
->port_res
[i
].qp
->init_attr
.qp_nr
;
1322 cb0
->default_qpn_arr
[i
] =
1323 port
->port_res
[0].qp
->init_attr
.qp_nr
;
1325 if (netif_msg_ifup(port
))
1326 ehea_dump(cb0
, sizeof(*cb0
), "ehea_configure_port");
1328 mask
= EHEA_BMASK_SET(H_PORT_CB0_PRC
, 1)
1329 | EHEA_BMASK_SET(H_PORT_CB0_DEFQPNARRAY
, 1);
1331 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1332 port
->logical_port_id
,
1333 H_PORT_CB0
, mask
, cb0
);
1335 if (hret
!= H_SUCCESS
)
1346 int ehea_gen_smrs(struct ehea_port_res
*pr
)
1349 struct ehea_adapter
*adapter
= pr
->port
->adapter
;
1351 ret
= ehea_gen_smr(adapter
, &adapter
->mr
, &pr
->send_mr
);
1355 ret
= ehea_gen_smr(adapter
, &adapter
->mr
, &pr
->recv_mr
);
1362 ehea_rem_mr(&pr
->send_mr
);
1364 ehea_error("Generating SMRS failed\n");
1368 int ehea_rem_smrs(struct ehea_port_res
*pr
)
1370 if ((ehea_rem_mr(&pr
->send_mr
))
1371 || (ehea_rem_mr(&pr
->recv_mr
)))
1377 static int ehea_init_q_skba(struct ehea_q_skb_arr
*q_skba
, int max_q_entries
)
1379 int arr_size
= sizeof(void *) * max_q_entries
;
1381 q_skba
->arr
= vmalloc(arr_size
);
1385 memset(q_skba
->arr
, 0, arr_size
);
1387 q_skba
->len
= max_q_entries
;
1389 q_skba
->os_skbs
= 0;
1394 static int ehea_init_port_res(struct ehea_port
*port
, struct ehea_port_res
*pr
,
1395 struct port_res_cfg
*pr_cfg
, int queue_token
)
1397 struct ehea_adapter
*adapter
= port
->adapter
;
1398 enum ehea_eq_type eq_type
= EHEA_EQ
;
1399 struct ehea_qp_init_attr
*init_attr
= NULL
;
1402 memset(pr
, 0, sizeof(struct ehea_port_res
));
1405 spin_lock_init(&pr
->xmit_lock
);
1406 spin_lock_init(&pr
->netif_queue
);
1408 pr
->eq
= ehea_create_eq(adapter
, eq_type
, EHEA_MAX_ENTRIES_EQ
, 0);
1410 ehea_error("create_eq failed (eq)");
1414 pr
->recv_cq
= ehea_create_cq(adapter
, pr_cfg
->max_entries_rcq
,
1416 port
->logical_port_id
);
1418 ehea_error("create_cq failed (cq_recv)");
1422 pr
->send_cq
= ehea_create_cq(adapter
, pr_cfg
->max_entries_scq
,
1424 port
->logical_port_id
);
1426 ehea_error("create_cq failed (cq_send)");
1430 if (netif_msg_ifup(port
))
1431 ehea_info("Send CQ: act_nr_cqes=%d, Recv CQ: act_nr_cqes=%d",
1432 pr
->send_cq
->attr
.act_nr_of_cqes
,
1433 pr
->recv_cq
->attr
.act_nr_of_cqes
);
1435 init_attr
= kzalloc(sizeof(*init_attr
), GFP_KERNEL
);
1438 ehea_error("no mem for ehea_qp_init_attr");
1442 init_attr
->low_lat_rq1
= 1;
1443 init_attr
->signalingtype
= 1; /* generate CQE if specified in WQE */
1444 init_attr
->rq_count
= 3;
1445 init_attr
->qp_token
= queue_token
;
1446 init_attr
->max_nr_send_wqes
= pr_cfg
->max_entries_sq
;
1447 init_attr
->max_nr_rwqes_rq1
= pr_cfg
->max_entries_rq1
;
1448 init_attr
->max_nr_rwqes_rq2
= pr_cfg
->max_entries_rq2
;
1449 init_attr
->max_nr_rwqes_rq3
= pr_cfg
->max_entries_rq3
;
1450 init_attr
->wqe_size_enc_sq
= EHEA_SG_SQ
;
1451 init_attr
->wqe_size_enc_rq1
= EHEA_SG_RQ1
;
1452 init_attr
->wqe_size_enc_rq2
= EHEA_SG_RQ2
;
1453 init_attr
->wqe_size_enc_rq3
= EHEA_SG_RQ3
;
1454 init_attr
->rq2_threshold
= EHEA_RQ2_THRESHOLD
;
1455 init_attr
->rq3_threshold
= EHEA_RQ3_THRESHOLD
;
1456 init_attr
->port_nr
= port
->logical_port_id
;
1457 init_attr
->send_cq_handle
= pr
->send_cq
->fw_handle
;
1458 init_attr
->recv_cq_handle
= pr
->recv_cq
->fw_handle
;
1459 init_attr
->aff_eq_handle
= port
->qp_eq
->fw_handle
;
1461 pr
->qp
= ehea_create_qp(adapter
, adapter
->pd
, init_attr
);
1463 ehea_error("create_qp failed");
1468 if (netif_msg_ifup(port
))
1469 ehea_info("QP: qp_nr=%d\n act_nr_snd_wqe=%d\n nr_rwqe_rq1=%d\n "
1470 "nr_rwqe_rq2=%d\n nr_rwqe_rq3=%d", init_attr
->qp_nr
,
1471 init_attr
->act_nr_send_wqes
,
1472 init_attr
->act_nr_rwqes_rq1
,
1473 init_attr
->act_nr_rwqes_rq2
,
1474 init_attr
->act_nr_rwqes_rq3
);
1476 pr
->sq_skba_size
= init_attr
->act_nr_send_wqes
+ 1;
1478 ret
= ehea_init_q_skba(&pr
->sq_skba
, pr
->sq_skba_size
);
1479 ret
|= ehea_init_q_skba(&pr
->rq1_skba
, init_attr
->act_nr_rwqes_rq1
+ 1);
1480 ret
|= ehea_init_q_skba(&pr
->rq2_skba
, init_attr
->act_nr_rwqes_rq2
+ 1);
1481 ret
|= ehea_init_q_skba(&pr
->rq3_skba
, init_attr
->act_nr_rwqes_rq3
+ 1);
1485 pr
->swqe_refill_th
= init_attr
->act_nr_send_wqes
/ 10;
1486 if (ehea_gen_smrs(pr
) != 0) {
1491 atomic_set(&pr
->swqe_avail
, init_attr
->act_nr_send_wqes
- 1);
1495 netif_napi_add(pr
->port
->netdev
, &pr
->napi
, ehea_poll
, 64);
1497 pr
->lro_mgr
.max_aggr
= pr
->port
->lro_max_aggr
;
1498 pr
->lro_mgr
.max_desc
= MAX_LRO_DESCRIPTORS
;
1499 pr
->lro_mgr
.lro_arr
= pr
->lro_desc
;
1500 pr
->lro_mgr
.get_skb_header
= get_skb_hdr
;
1501 pr
->lro_mgr
.features
= LRO_F_NAPI
| LRO_F_EXTRACT_VLAN_ID
;
1502 pr
->lro_mgr
.dev
= port
->netdev
;
1503 pr
->lro_mgr
.ip_summed
= CHECKSUM_UNNECESSARY
;
1504 pr
->lro_mgr
.ip_summed_aggr
= CHECKSUM_UNNECESSARY
;
1511 vfree(pr
->sq_skba
.arr
);
1512 vfree(pr
->rq1_skba
.arr
);
1513 vfree(pr
->rq2_skba
.arr
);
1514 vfree(pr
->rq3_skba
.arr
);
1515 ehea_destroy_qp(pr
->qp
);
1516 ehea_destroy_cq(pr
->send_cq
);
1517 ehea_destroy_cq(pr
->recv_cq
);
1518 ehea_destroy_eq(pr
->eq
);
1523 static int ehea_clean_portres(struct ehea_port
*port
, struct ehea_port_res
*pr
)
1527 ret
= ehea_destroy_qp(pr
->qp
);
1530 ehea_destroy_cq(pr
->send_cq
);
1531 ehea_destroy_cq(pr
->recv_cq
);
1532 ehea_destroy_eq(pr
->eq
);
1534 for (i
= 0; i
< pr
->rq1_skba
.len
; i
++)
1535 if (pr
->rq1_skba
.arr
[i
])
1536 dev_kfree_skb(pr
->rq1_skba
.arr
[i
]);
1538 for (i
= 0; i
< pr
->rq2_skba
.len
; i
++)
1539 if (pr
->rq2_skba
.arr
[i
])
1540 dev_kfree_skb(pr
->rq2_skba
.arr
[i
]);
1542 for (i
= 0; i
< pr
->rq3_skba
.len
; i
++)
1543 if (pr
->rq3_skba
.arr
[i
])
1544 dev_kfree_skb(pr
->rq3_skba
.arr
[i
]);
1546 for (i
= 0; i
< pr
->sq_skba
.len
; i
++)
1547 if (pr
->sq_skba
.arr
[i
])
1548 dev_kfree_skb(pr
->sq_skba
.arr
[i
]);
1550 vfree(pr
->rq1_skba
.arr
);
1551 vfree(pr
->rq2_skba
.arr
);
1552 vfree(pr
->rq3_skba
.arr
);
1553 vfree(pr
->sq_skba
.arr
);
1554 ret
= ehea_rem_smrs(pr
);
1560 * The write_* functions store information in swqe which is used by
1561 * the hardware to calculate the ip/tcp/udp checksum
1564 static inline void write_ip_start_end(struct ehea_swqe
*swqe
,
1565 const struct sk_buff
*skb
)
1567 swqe
->ip_start
= skb_network_offset(skb
);
1568 swqe
->ip_end
= (u8
)(swqe
->ip_start
+ ip_hdrlen(skb
) - 1);
1571 static inline void write_tcp_offset_end(struct ehea_swqe
*swqe
,
1572 const struct sk_buff
*skb
)
1575 (u8
)(swqe
->ip_end
+ 1 + offsetof(struct tcphdr
, check
));
1577 swqe
->tcp_end
= (u16
)skb
->len
- 1;
1580 static inline void write_udp_offset_end(struct ehea_swqe
*swqe
,
1581 const struct sk_buff
*skb
)
1584 (u8
)(swqe
->ip_end
+ 1 + offsetof(struct udphdr
, check
));
1586 swqe
->tcp_end
= (u16
)skb
->len
- 1;
1590 static void write_swqe2_TSO(struct sk_buff
*skb
,
1591 struct ehea_swqe
*swqe
, u32 lkey
)
1593 struct ehea_vsgentry
*sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1594 u8
*imm_data
= &swqe
->u
.immdata_desc
.immediate_data
[0];
1595 int skb_data_size
= skb
->len
- skb
->data_len
;
1598 /* Packet is TCP with TSO enabled */
1599 swqe
->tx_control
|= EHEA_SWQE_TSO
;
1600 swqe
->mss
= skb_shinfo(skb
)->gso_size
;
1601 /* copy only eth/ip/tcp headers to immediate data and
1602 * the rest of skb->data to sg1entry
1604 headersize
= ETH_HLEN
+ ip_hdrlen(skb
) + tcp_hdrlen(skb
);
1606 skb_data_size
= skb
->len
- skb
->data_len
;
1608 if (skb_data_size
>= headersize
) {
1609 /* copy immediate data */
1610 skb_copy_from_linear_data(skb
, imm_data
, headersize
);
1611 swqe
->immediate_data_length
= headersize
;
1613 if (skb_data_size
> headersize
) {
1614 /* set sg1entry data */
1615 sg1entry
->l_key
= lkey
;
1616 sg1entry
->len
= skb_data_size
- headersize
;
1618 ehea_map_vaddr(skb
->data
+ headersize
);
1619 swqe
->descriptors
++;
1622 ehea_error("cannot handle fragmented headers");
1625 static void write_swqe2_nonTSO(struct sk_buff
*skb
,
1626 struct ehea_swqe
*swqe
, u32 lkey
)
1628 int skb_data_size
= skb
->len
- skb
->data_len
;
1629 u8
*imm_data
= &swqe
->u
.immdata_desc
.immediate_data
[0];
1630 struct ehea_vsgentry
*sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1632 /* Packet is any nonTSO type
1634 * Copy as much as possible skb->data to immediate data and
1635 * the rest to sg1entry
1637 if (skb_data_size
>= SWQE2_MAX_IMM
) {
1638 /* copy immediate data */
1639 skb_copy_from_linear_data(skb
, imm_data
, SWQE2_MAX_IMM
);
1641 swqe
->immediate_data_length
= SWQE2_MAX_IMM
;
1643 if (skb_data_size
> SWQE2_MAX_IMM
) {
1644 /* copy sg1entry data */
1645 sg1entry
->l_key
= lkey
;
1646 sg1entry
->len
= skb_data_size
- SWQE2_MAX_IMM
;
1648 ehea_map_vaddr(skb
->data
+ SWQE2_MAX_IMM
);
1649 swqe
->descriptors
++;
1652 skb_copy_from_linear_data(skb
, imm_data
, skb_data_size
);
1653 swqe
->immediate_data_length
= skb_data_size
;
1657 static inline void write_swqe2_data(struct sk_buff
*skb
, struct net_device
*dev
,
1658 struct ehea_swqe
*swqe
, u32 lkey
)
1660 struct ehea_vsgentry
*sg_list
, *sg1entry
, *sgentry
;
1662 int nfrags
, sg1entry_contains_frag_data
, i
;
1664 nfrags
= skb_shinfo(skb
)->nr_frags
;
1665 sg1entry
= &swqe
->u
.immdata_desc
.sg_entry
;
1666 sg_list
= (struct ehea_vsgentry
*)&swqe
->u
.immdata_desc
.sg_list
;
1667 swqe
->descriptors
= 0;
1668 sg1entry_contains_frag_data
= 0;
1670 if ((dev
->features
& NETIF_F_TSO
) && skb_shinfo(skb
)->gso_size
)
1671 write_swqe2_TSO(skb
, swqe
, lkey
);
1673 write_swqe2_nonTSO(skb
, swqe
, lkey
);
1675 /* write descriptors */
1677 if (swqe
->descriptors
== 0) {
1678 /* sg1entry not yet used */
1679 frag
= &skb_shinfo(skb
)->frags
[0];
1681 /* copy sg1entry data */
1682 sg1entry
->l_key
= lkey
;
1683 sg1entry
->len
= frag
->size
;
1685 ehea_map_vaddr(page_address(frag
->page
)
1686 + frag
->page_offset
);
1687 swqe
->descriptors
++;
1688 sg1entry_contains_frag_data
= 1;
1691 for (i
= sg1entry_contains_frag_data
; i
< nfrags
; i
++) {
1693 frag
= &skb_shinfo(skb
)->frags
[i
];
1694 sgentry
= &sg_list
[i
- sg1entry_contains_frag_data
];
1696 sgentry
->l_key
= lkey
;
1697 sgentry
->len
= frag
->size
;
1699 ehea_map_vaddr(page_address(frag
->page
)
1700 + frag
->page_offset
);
1701 swqe
->descriptors
++;
1706 static int ehea_broadcast_reg_helper(struct ehea_port
*port
, u32 hcallid
)
1712 /* De/Register untagged packets */
1713 reg_type
= EHEA_BCMC_BROADCAST
| EHEA_BCMC_UNTAGGED
;
1714 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1715 port
->logical_port_id
,
1716 reg_type
, port
->mac_addr
, 0, hcallid
);
1717 if (hret
!= H_SUCCESS
) {
1718 ehea_error("%sregistering bc address failed (tagged)",
1719 hcallid
== H_REG_BCMC
? "" : "de");
1724 /* De/Register VLAN packets */
1725 reg_type
= EHEA_BCMC_BROADCAST
| EHEA_BCMC_VLANID_ALL
;
1726 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1727 port
->logical_port_id
,
1728 reg_type
, port
->mac_addr
, 0, hcallid
);
1729 if (hret
!= H_SUCCESS
) {
1730 ehea_error("%sregistering bc address failed (vlan)",
1731 hcallid
== H_REG_BCMC
? "" : "de");
1738 static int ehea_set_mac_addr(struct net_device
*dev
, void *sa
)
1740 struct ehea_port
*port
= netdev_priv(dev
);
1741 struct sockaddr
*mac_addr
= sa
;
1742 struct hcp_ehea_port_cb0
*cb0
;
1746 if (!is_valid_ether_addr(mac_addr
->sa_data
)) {
1747 ret
= -EADDRNOTAVAIL
;
1751 cb0
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
1753 ehea_error("no mem for cb0");
1758 memcpy(&(cb0
->port_mac_addr
), &(mac_addr
->sa_data
[0]), ETH_ALEN
);
1760 cb0
->port_mac_addr
= cb0
->port_mac_addr
>> 16;
1762 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1763 port
->logical_port_id
, H_PORT_CB0
,
1764 EHEA_BMASK_SET(H_PORT_CB0_MAC
, 1), cb0
);
1765 if (hret
!= H_SUCCESS
) {
1770 memcpy(dev
->dev_addr
, mac_addr
->sa_data
, dev
->addr_len
);
1772 spin_lock(&ehea_bcmc_regs
.lock
);
1774 /* Deregister old MAC in pHYP */
1775 if (port
->state
== EHEA_PORT_UP
) {
1776 ret
= ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
1781 port
->mac_addr
= cb0
->port_mac_addr
<< 16;
1783 /* Register new MAC in pHYP */
1784 if (port
->state
== EHEA_PORT_UP
) {
1785 ret
= ehea_broadcast_reg_helper(port
, H_REG_BCMC
);
1793 ehea_update_bcmc_registrations();
1794 spin_unlock(&ehea_bcmc_regs
.lock
);
1801 static void ehea_promiscuous_error(u64 hret
, int enable
)
1803 if (hret
== H_AUTHORITY
)
1804 ehea_info("Hypervisor denied %sabling promiscuous mode",
1805 enable
== 1 ? "en" : "dis");
1807 ehea_error("failed %sabling promiscuous mode",
1808 enable
== 1 ? "en" : "dis");
1811 static void ehea_promiscuous(struct net_device
*dev
, int enable
)
1813 struct ehea_port
*port
= netdev_priv(dev
);
1814 struct hcp_ehea_port_cb7
*cb7
;
1817 if ((enable
&& port
->promisc
) || (!enable
&& !port
->promisc
))
1820 cb7
= kzalloc(PAGE_SIZE
, GFP_ATOMIC
);
1822 ehea_error("no mem for cb7");
1826 /* Modify Pxs_DUCQPN in CB7 */
1827 cb7
->def_uc_qpn
= enable
== 1 ? port
->port_res
[0].qp
->fw_handle
: 0;
1829 hret
= ehea_h_modify_ehea_port(port
->adapter
->handle
,
1830 port
->logical_port_id
,
1831 H_PORT_CB7
, H_PORT_CB7_DUCQPN
, cb7
);
1833 ehea_promiscuous_error(hret
, enable
);
1837 port
->promisc
= enable
;
1843 static u64
ehea_multicast_reg_helper(struct ehea_port
*port
, u64 mc_mac_addr
,
1849 reg_type
= EHEA_BCMC_SCOPE_ALL
| EHEA_BCMC_MULTICAST
1850 | EHEA_BCMC_UNTAGGED
;
1852 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1853 port
->logical_port_id
,
1854 reg_type
, mc_mac_addr
, 0, hcallid
);
1858 reg_type
= EHEA_BCMC_SCOPE_ALL
| EHEA_BCMC_MULTICAST
1859 | EHEA_BCMC_VLANID_ALL
;
1861 hret
= ehea_h_reg_dereg_bcmc(port
->adapter
->handle
,
1862 port
->logical_port_id
,
1863 reg_type
, mc_mac_addr
, 0, hcallid
);
1868 static int ehea_drop_multicast_list(struct net_device
*dev
)
1870 struct ehea_port
*port
= netdev_priv(dev
);
1871 struct ehea_mc_list
*mc_entry
= port
->mc_list
;
1872 struct list_head
*pos
;
1873 struct list_head
*temp
;
1877 list_for_each_safe(pos
, temp
, &(port
->mc_list
->list
)) {
1878 mc_entry
= list_entry(pos
, struct ehea_mc_list
, list
);
1880 hret
= ehea_multicast_reg_helper(port
, mc_entry
->macaddr
,
1883 ehea_error("failed deregistering mcast MAC");
1893 static void ehea_allmulti(struct net_device
*dev
, int enable
)
1895 struct ehea_port
*port
= netdev_priv(dev
);
1898 if (!port
->allmulti
) {
1900 /* Enable ALLMULTI */
1901 ehea_drop_multicast_list(dev
);
1902 hret
= ehea_multicast_reg_helper(port
, 0, H_REG_BCMC
);
1906 ehea_error("failed enabling IFF_ALLMULTI");
1910 /* Disable ALLMULTI */
1911 hret
= ehea_multicast_reg_helper(port
, 0, H_DEREG_BCMC
);
1915 ehea_error("failed disabling IFF_ALLMULTI");
1919 static void ehea_add_multicast_entry(struct ehea_port
*port
, u8
*mc_mac_addr
)
1921 struct ehea_mc_list
*ehea_mcl_entry
;
1924 ehea_mcl_entry
= kzalloc(sizeof(*ehea_mcl_entry
), GFP_ATOMIC
);
1925 if (!ehea_mcl_entry
) {
1926 ehea_error("no mem for mcl_entry");
1930 INIT_LIST_HEAD(&ehea_mcl_entry
->list
);
1932 memcpy(&ehea_mcl_entry
->macaddr
, mc_mac_addr
, ETH_ALEN
);
1934 hret
= ehea_multicast_reg_helper(port
, ehea_mcl_entry
->macaddr
,
1937 list_add(&ehea_mcl_entry
->list
, &port
->mc_list
->list
);
1939 ehea_error("failed registering mcast MAC");
1940 kfree(ehea_mcl_entry
);
1944 static void ehea_set_multicast_list(struct net_device
*dev
)
1946 struct ehea_port
*port
= netdev_priv(dev
);
1947 struct dev_mc_list
*k_mcl_entry
;
1950 if (dev
->flags
& IFF_PROMISC
) {
1951 ehea_promiscuous(dev
, 1);
1954 ehea_promiscuous(dev
, 0);
1956 spin_lock(&ehea_bcmc_regs
.lock
);
1958 if (dev
->flags
& IFF_ALLMULTI
) {
1959 ehea_allmulti(dev
, 1);
1962 ehea_allmulti(dev
, 0);
1964 if (dev
->mc_count
) {
1965 ret
= ehea_drop_multicast_list(dev
);
1967 /* Dropping the current multicast list failed.
1968 * Enabling ALL_MULTI is the best we can do.
1970 ehea_allmulti(dev
, 1);
1973 if (dev
->mc_count
> port
->adapter
->max_mc_mac
) {
1974 ehea_info("Mcast registration limit reached (0x%lx). "
1976 port
->adapter
->max_mc_mac
);
1980 for (i
= 0, k_mcl_entry
= dev
->mc_list
; i
< dev
->mc_count
; i
++,
1981 k_mcl_entry
= k_mcl_entry
->next
)
1982 ehea_add_multicast_entry(port
, k_mcl_entry
->dmi_addr
);
1986 ehea_update_bcmc_registrations();
1987 spin_unlock(&ehea_bcmc_regs
.lock
);
1991 static int ehea_change_mtu(struct net_device
*dev
, int new_mtu
)
1993 if ((new_mtu
< 68) || (new_mtu
> EHEA_MAX_PACKET_SIZE
))
1999 static void ehea_xmit2(struct sk_buff
*skb
, struct net_device
*dev
,
2000 struct ehea_swqe
*swqe
, u32 lkey
)
2002 if (skb
->protocol
== htons(ETH_P_IP
)) {
2003 const struct iphdr
*iph
= ip_hdr(skb
);
2006 swqe
->tx_control
|= EHEA_SWQE_CRC
2007 | EHEA_SWQE_IP_CHECKSUM
2008 | EHEA_SWQE_TCP_CHECKSUM
2009 | EHEA_SWQE_IMM_DATA_PRESENT
2010 | EHEA_SWQE_DESCRIPTORS_PRESENT
;
2012 write_ip_start_end(swqe
, skb
);
2014 if (iph
->protocol
== IPPROTO_UDP
) {
2015 if ((iph
->frag_off
& IP_MF
)
2016 || (iph
->frag_off
& IP_OFFSET
))
2017 /* IP fragment, so don't change cs */
2018 swqe
->tx_control
&= ~EHEA_SWQE_TCP_CHECKSUM
;
2020 write_udp_offset_end(swqe
, skb
);
2021 } else if (iph
->protocol
== IPPROTO_TCP
) {
2022 write_tcp_offset_end(swqe
, skb
);
2025 /* icmp (big data) and ip segmentation packets (all other ip
2026 packets) do not require any special handling */
2029 /* Other Ethernet Protocol */
2030 swqe
->tx_control
|= EHEA_SWQE_CRC
2031 | EHEA_SWQE_IMM_DATA_PRESENT
2032 | EHEA_SWQE_DESCRIPTORS_PRESENT
;
2035 write_swqe2_data(skb
, dev
, swqe
, lkey
);
2038 static void ehea_xmit3(struct sk_buff
*skb
, struct net_device
*dev
,
2039 struct ehea_swqe
*swqe
)
2041 int nfrags
= skb_shinfo(skb
)->nr_frags
;
2042 u8
*imm_data
= &swqe
->u
.immdata_nodesc
.immediate_data
[0];
2046 if (skb
->protocol
== htons(ETH_P_IP
)) {
2047 const struct iphdr
*iph
= ip_hdr(skb
);
2050 write_ip_start_end(swqe
, skb
);
2052 if (iph
->protocol
== IPPROTO_TCP
) {
2053 swqe
->tx_control
|= EHEA_SWQE_CRC
2054 | EHEA_SWQE_IP_CHECKSUM
2055 | EHEA_SWQE_TCP_CHECKSUM
2056 | EHEA_SWQE_IMM_DATA_PRESENT
;
2058 write_tcp_offset_end(swqe
, skb
);
2060 } else if (iph
->protocol
== IPPROTO_UDP
) {
2061 if ((iph
->frag_off
& IP_MF
)
2062 || (iph
->frag_off
& IP_OFFSET
))
2063 /* IP fragment, so don't change cs */
2064 swqe
->tx_control
|= EHEA_SWQE_CRC
2065 | EHEA_SWQE_IMM_DATA_PRESENT
;
2067 swqe
->tx_control
|= EHEA_SWQE_CRC
2068 | EHEA_SWQE_IP_CHECKSUM
2069 | EHEA_SWQE_TCP_CHECKSUM
2070 | EHEA_SWQE_IMM_DATA_PRESENT
;
2072 write_udp_offset_end(swqe
, skb
);
2075 /* icmp (big data) and
2076 ip segmentation packets (all other ip packets) */
2077 swqe
->tx_control
|= EHEA_SWQE_CRC
2078 | EHEA_SWQE_IP_CHECKSUM
2079 | EHEA_SWQE_IMM_DATA_PRESENT
;
2082 /* Other Ethernet Protocol */
2083 swqe
->tx_control
|= EHEA_SWQE_CRC
| EHEA_SWQE_IMM_DATA_PRESENT
;
2085 /* copy (immediate) data */
2087 /* data is in a single piece */
2088 skb_copy_from_linear_data(skb
, imm_data
, skb
->len
);
2090 /* first copy data from the skb->data buffer ... */
2091 skb_copy_from_linear_data(skb
, imm_data
,
2092 skb
->len
- skb
->data_len
);
2093 imm_data
+= skb
->len
- skb
->data_len
;
2095 /* ... then copy data from the fragments */
2096 for (i
= 0; i
< nfrags
; i
++) {
2097 frag
= &skb_shinfo(skb
)->frags
[i
];
2099 page_address(frag
->page
) + frag
->page_offset
,
2101 imm_data
+= frag
->size
;
2104 swqe
->immediate_data_length
= skb
->len
;
2108 static inline int ehea_hash_skb(struct sk_buff
*skb
, int num_qps
)
2113 if ((skb
->protocol
== htons(ETH_P_IP
)) &&
2114 (ip_hdr(skb
)->protocol
== IPPROTO_TCP
)) {
2115 tcp
= (struct tcphdr
*)(skb_network_header(skb
) +
2116 (ip_hdr(skb
)->ihl
* 4));
2117 tmp
= (tcp
->source
+ (tcp
->dest
<< 16)) % 31;
2118 tmp
+= ip_hdr(skb
)->daddr
% 31;
2119 return tmp
% num_qps
;
2124 static int ehea_start_xmit(struct sk_buff
*skb
, struct net_device
*dev
)
2126 struct ehea_port
*port
= netdev_priv(dev
);
2127 struct ehea_swqe
*swqe
;
2128 unsigned long flags
;
2131 struct ehea_port_res
*pr
;
2133 pr
= &port
->port_res
[ehea_hash_skb(skb
, port
->num_tx_qps
)];
2135 if (!spin_trylock(&pr
->xmit_lock
))
2136 return NETDEV_TX_BUSY
;
2138 if (pr
->queue_stopped
) {
2139 spin_unlock(&pr
->xmit_lock
);
2140 return NETDEV_TX_BUSY
;
2143 swqe
= ehea_get_swqe(pr
->qp
, &swqe_index
);
2144 memset(swqe
, 0, SWQE_HEADER_SIZE
);
2145 atomic_dec(&pr
->swqe_avail
);
2147 if (skb
->len
<= SWQE3_MAX_IMM
) {
2148 u32 sig_iv
= port
->sig_comp_iv
;
2149 u32 swqe_num
= pr
->swqe_id_counter
;
2150 ehea_xmit3(skb
, dev
, swqe
);
2151 swqe
->wr_id
= EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, EHEA_SWQE3_TYPE
)
2152 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT
, swqe_num
);
2153 if (pr
->swqe_ll_count
>= (sig_iv
- 1)) {
2154 swqe
->wr_id
|= EHEA_BMASK_SET(EHEA_WR_ID_REFILL
,
2156 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
2157 pr
->swqe_ll_count
= 0;
2159 pr
->swqe_ll_count
+= 1;
2162 EHEA_BMASK_SET(EHEA_WR_ID_TYPE
, EHEA_SWQE2_TYPE
)
2163 | EHEA_BMASK_SET(EHEA_WR_ID_COUNT
, pr
->swqe_id_counter
)
2164 | EHEA_BMASK_SET(EHEA_WR_ID_REFILL
, 1)
2165 | EHEA_BMASK_SET(EHEA_WR_ID_INDEX
, pr
->sq_skba
.index
);
2166 pr
->sq_skba
.arr
[pr
->sq_skba
.index
] = skb
;
2168 pr
->sq_skba
.index
++;
2169 pr
->sq_skba
.index
&= (pr
->sq_skba
.len
- 1);
2171 lkey
= pr
->send_mr
.lkey
;
2172 ehea_xmit2(skb
, dev
, swqe
, lkey
);
2173 swqe
->tx_control
|= EHEA_SWQE_SIGNALLED_COMPLETION
;
2175 pr
->swqe_id_counter
+= 1;
2177 if (port
->vgrp
&& vlan_tx_tag_present(skb
)) {
2178 swqe
->tx_control
|= EHEA_SWQE_VLAN_INSERT
;
2179 swqe
->vlan_tag
= vlan_tx_tag_get(skb
);
2182 if (netif_msg_tx_queued(port
)) {
2183 ehea_info("post swqe on QP %d", pr
->qp
->init_attr
.qp_nr
);
2184 ehea_dump(swqe
, 512, "swqe");
2187 if (unlikely(test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))) {
2188 netif_stop_queue(dev
);
2189 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
2192 ehea_post_swqe(pr
->qp
, swqe
);
2195 if (unlikely(atomic_read(&pr
->swqe_avail
) <= 1)) {
2196 spin_lock_irqsave(&pr
->netif_queue
, flags
);
2197 if (unlikely(atomic_read(&pr
->swqe_avail
) <= 1)) {
2198 pr
->p_stats
.queue_stopped
++;
2199 netif_stop_queue(dev
);
2200 pr
->queue_stopped
= 1;
2202 spin_unlock_irqrestore(&pr
->netif_queue
, flags
);
2204 dev
->trans_start
= jiffies
;
2205 spin_unlock(&pr
->xmit_lock
);
2207 return NETDEV_TX_OK
;
2210 static void ehea_vlan_rx_register(struct net_device
*dev
,
2211 struct vlan_group
*grp
)
2213 struct ehea_port
*port
= netdev_priv(dev
);
2214 struct ehea_adapter
*adapter
= port
->adapter
;
2215 struct hcp_ehea_port_cb1
*cb1
;
2220 cb1
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2222 ehea_error("no mem for cb1");
2226 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2227 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2228 if (hret
!= H_SUCCESS
)
2229 ehea_error("modify_ehea_port failed");
2236 static void ehea_vlan_rx_add_vid(struct net_device
*dev
, unsigned short vid
)
2238 struct ehea_port
*port
= netdev_priv(dev
);
2239 struct ehea_adapter
*adapter
= port
->adapter
;
2240 struct hcp_ehea_port_cb1
*cb1
;
2244 cb1
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2246 ehea_error("no mem for cb1");
2250 hret
= ehea_h_query_ehea_port(adapter
->handle
, port
->logical_port_id
,
2251 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2252 if (hret
!= H_SUCCESS
) {
2253 ehea_error("query_ehea_port failed");
2258 cb1
->vlan_filter
[index
] |= ((u64
)(0x8000000000000000 >> (vid
& 0x3F)));
2260 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2261 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2262 if (hret
!= H_SUCCESS
)
2263 ehea_error("modify_ehea_port failed");
2269 static void ehea_vlan_rx_kill_vid(struct net_device
*dev
, unsigned short vid
)
2271 struct ehea_port
*port
= netdev_priv(dev
);
2272 struct ehea_adapter
*adapter
= port
->adapter
;
2273 struct hcp_ehea_port_cb1
*cb1
;
2277 vlan_group_set_device(port
->vgrp
, vid
, NULL
);
2279 cb1
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2281 ehea_error("no mem for cb1");
2285 hret
= ehea_h_query_ehea_port(adapter
->handle
, port
->logical_port_id
,
2286 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2287 if (hret
!= H_SUCCESS
) {
2288 ehea_error("query_ehea_port failed");
2293 cb1
->vlan_filter
[index
] &= ~((u64
)(0x8000000000000000 >> (vid
& 0x3F)));
2295 hret
= ehea_h_modify_ehea_port(adapter
->handle
, port
->logical_port_id
,
2296 H_PORT_CB1
, H_PORT_CB1_ALL
, cb1
);
2297 if (hret
!= H_SUCCESS
)
2298 ehea_error("modify_ehea_port failed");
2304 int ehea_activate_qp(struct ehea_adapter
*adapter
, struct ehea_qp
*qp
)
2310 struct hcp_modify_qp_cb0
*cb0
;
2312 cb0
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2318 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2319 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2320 if (hret
!= H_SUCCESS
) {
2321 ehea_error("query_ehea_qp failed (1)");
2325 cb0
->qp_ctl_reg
= H_QP_CR_STATE_INITIALIZED
;
2326 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2327 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2328 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2329 if (hret
!= H_SUCCESS
) {
2330 ehea_error("modify_ehea_qp failed (1)");
2334 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2335 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2336 if (hret
!= H_SUCCESS
) {
2337 ehea_error("query_ehea_qp failed (2)");
2341 cb0
->qp_ctl_reg
= H_QP_CR_ENABLED
| H_QP_CR_STATE_INITIALIZED
;
2342 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2343 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2344 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2345 if (hret
!= H_SUCCESS
) {
2346 ehea_error("modify_ehea_qp failed (2)");
2350 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2351 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2352 if (hret
!= H_SUCCESS
) {
2353 ehea_error("query_ehea_qp failed (3)");
2357 cb0
->qp_ctl_reg
= H_QP_CR_ENABLED
| H_QP_CR_STATE_RDY2SND
;
2358 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2359 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
, 1), cb0
,
2360 &dummy64
, &dummy64
, &dummy16
, &dummy16
);
2361 if (hret
!= H_SUCCESS
) {
2362 ehea_error("modify_ehea_qp failed (3)");
2366 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2367 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF), cb0
);
2368 if (hret
!= H_SUCCESS
) {
2369 ehea_error("query_ehea_qp failed (4)");
2379 static int ehea_port_res_setup(struct ehea_port
*port
, int def_qps
,
2383 struct port_res_cfg pr_cfg
, pr_cfg_small_rx
;
2384 enum ehea_eq_type eq_type
= EHEA_EQ
;
2386 port
->qp_eq
= ehea_create_eq(port
->adapter
, eq_type
,
2387 EHEA_MAX_ENTRIES_EQ
, 1);
2390 ehea_error("ehea_create_eq failed (qp_eq)");
2394 pr_cfg
.max_entries_rcq
= rq1_entries
+ rq2_entries
+ rq3_entries
;
2395 pr_cfg
.max_entries_scq
= sq_entries
* 2;
2396 pr_cfg
.max_entries_sq
= sq_entries
;
2397 pr_cfg
.max_entries_rq1
= rq1_entries
;
2398 pr_cfg
.max_entries_rq2
= rq2_entries
;
2399 pr_cfg
.max_entries_rq3
= rq3_entries
;
2401 pr_cfg_small_rx
.max_entries_rcq
= 1;
2402 pr_cfg_small_rx
.max_entries_scq
= sq_entries
;
2403 pr_cfg_small_rx
.max_entries_sq
= sq_entries
;
2404 pr_cfg_small_rx
.max_entries_rq1
= 1;
2405 pr_cfg_small_rx
.max_entries_rq2
= 1;
2406 pr_cfg_small_rx
.max_entries_rq3
= 1;
2408 for (i
= 0; i
< def_qps
; i
++) {
2409 ret
= ehea_init_port_res(port
, &port
->port_res
[i
], &pr_cfg
, i
);
2413 for (i
= def_qps
; i
< def_qps
+ add_tx_qps
; i
++) {
2414 ret
= ehea_init_port_res(port
, &port
->port_res
[i
],
2415 &pr_cfg_small_rx
, i
);
2424 ehea_clean_portres(port
, &port
->port_res
[i
]);
2427 ehea_destroy_eq(port
->qp_eq
);
2431 static int ehea_clean_all_portres(struct ehea_port
*port
)
2436 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++)
2437 ret
|= ehea_clean_portres(port
, &port
->port_res
[i
]);
2439 ret
|= ehea_destroy_eq(port
->qp_eq
);
2444 static void ehea_remove_adapter_mr(struct ehea_adapter
*adapter
)
2446 if (adapter
->active_ports
)
2449 ehea_rem_mr(&adapter
->mr
);
2452 static int ehea_add_adapter_mr(struct ehea_adapter
*adapter
)
2454 if (adapter
->active_ports
)
2457 return ehea_reg_kernel_mr(adapter
, &adapter
->mr
);
2460 static int ehea_up(struct net_device
*dev
)
2463 struct ehea_port
*port
= netdev_priv(dev
);
2465 if (port
->state
== EHEA_PORT_UP
)
2468 mutex_lock(&ehea_fw_handles
.lock
);
2470 ret
= ehea_port_res_setup(port
, port
->num_def_qps
,
2471 port
->num_add_tx_qps
);
2473 ehea_error("port_res_failed");
2477 /* Set default QP for this port */
2478 ret
= ehea_configure_port(port
);
2480 ehea_error("ehea_configure_port failed. ret:%d", ret
);
2484 ret
= ehea_reg_interrupts(dev
);
2486 ehea_error("reg_interrupts failed. ret:%d", ret
);
2490 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
2491 ret
= ehea_activate_qp(port
->adapter
, port
->port_res
[i
].qp
);
2493 ehea_error("activate_qp failed");
2498 for (i
= 0; i
< port
->num_def_qps
; i
++) {
2499 ret
= ehea_fill_port_res(&port
->port_res
[i
]);
2501 ehea_error("out_free_irqs");
2506 spin_lock(&ehea_bcmc_regs
.lock
);
2508 ret
= ehea_broadcast_reg_helper(port
, H_REG_BCMC
);
2514 port
->state
= EHEA_PORT_UP
;
2520 ehea_free_interrupts(dev
);
2523 ehea_clean_all_portres(port
);
2526 ehea_info("Failed starting %s. ret=%i", dev
->name
, ret
);
2528 ehea_update_bcmc_registrations();
2529 spin_unlock(&ehea_bcmc_regs
.lock
);
2531 ehea_update_firmware_handles();
2532 mutex_unlock(&ehea_fw_handles
.lock
);
2537 static void port_napi_disable(struct ehea_port
*port
)
2541 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++)
2542 napi_disable(&port
->port_res
[i
].napi
);
2545 static void port_napi_enable(struct ehea_port
*port
)
2549 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++)
2550 napi_enable(&port
->port_res
[i
].napi
);
2553 static int ehea_open(struct net_device
*dev
)
2556 struct ehea_port
*port
= netdev_priv(dev
);
2558 mutex_lock(&port
->port_lock
);
2560 if (netif_msg_ifup(port
))
2561 ehea_info("enabling port %s", dev
->name
);
2565 port_napi_enable(port
);
2566 netif_start_queue(dev
);
2569 mutex_unlock(&port
->port_lock
);
2574 static int ehea_down(struct net_device
*dev
)
2577 struct ehea_port
*port
= netdev_priv(dev
);
2579 if (port
->state
== EHEA_PORT_DOWN
)
2582 mutex_lock(&ehea_fw_handles
.lock
);
2584 spin_lock(&ehea_bcmc_regs
.lock
);
2585 ehea_drop_multicast_list(dev
);
2586 ehea_broadcast_reg_helper(port
, H_DEREG_BCMC
);
2588 ehea_free_interrupts(dev
);
2590 port
->state
= EHEA_PORT_DOWN
;
2592 ehea_update_bcmc_registrations();
2593 spin_unlock(&ehea_bcmc_regs
.lock
);
2595 ret
= ehea_clean_all_portres(port
);
2597 ehea_info("Failed freeing resources for %s. ret=%i",
2600 ehea_update_firmware_handles();
2601 mutex_unlock(&ehea_fw_handles
.lock
);
2606 static int ehea_stop(struct net_device
*dev
)
2609 struct ehea_port
*port
= netdev_priv(dev
);
2611 if (netif_msg_ifdown(port
))
2612 ehea_info("disabling port %s", dev
->name
);
2614 set_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
);
2615 cancel_work_sync(&port
->reset_task
);
2616 mutex_lock(&port
->port_lock
);
2617 netif_stop_queue(dev
);
2618 port_napi_disable(port
);
2619 ret
= ehea_down(dev
);
2620 mutex_unlock(&port
->port_lock
);
2621 clear_bit(__EHEA_DISABLE_PORT_RESET
, &port
->flags
);
2625 static void ehea_purge_sq(struct ehea_qp
*orig_qp
)
2627 struct ehea_qp qp
= *orig_qp
;
2628 struct ehea_qp_init_attr
*init_attr
= &qp
.init_attr
;
2629 struct ehea_swqe
*swqe
;
2633 for (i
= 0; i
< init_attr
->act_nr_send_wqes
; i
++) {
2634 swqe
= ehea_get_swqe(&qp
, &wqe_index
);
2635 swqe
->tx_control
|= EHEA_SWQE_PURGE
;
2639 static void ehea_flush_sq(struct ehea_port
*port
)
2643 for (i
= 0; i
< port
->num_def_qps
+ port
->num_add_tx_qps
; i
++) {
2644 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2645 int swqe_max
= pr
->sq_skba_size
- 2 - pr
->swqe_ll_count
;
2647 while (atomic_read(&pr
->swqe_avail
) < swqe_max
) {
2655 int ehea_stop_qps(struct net_device
*dev
)
2657 struct ehea_port
*port
= netdev_priv(dev
);
2658 struct ehea_adapter
*adapter
= port
->adapter
;
2659 struct hcp_modify_qp_cb0
*cb0
;
2667 cb0
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2673 for (i
= 0; i
< (port
->num_def_qps
+ port
->num_add_tx_qps
); i
++) {
2674 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2675 struct ehea_qp
*qp
= pr
->qp
;
2677 /* Purge send queue */
2680 /* Disable queue pair */
2681 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2682 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2684 if (hret
!= H_SUCCESS
) {
2685 ehea_error("query_ehea_qp failed (1)");
2689 cb0
->qp_ctl_reg
= (cb0
->qp_ctl_reg
& H_QP_CR_RES_STATE
) << 8;
2690 cb0
->qp_ctl_reg
&= ~H_QP_CR_ENABLED
;
2692 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2693 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
,
2695 &dummy64
, &dummy16
, &dummy16
);
2696 if (hret
!= H_SUCCESS
) {
2697 ehea_error("modify_ehea_qp failed (1)");
2701 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2702 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2704 if (hret
!= H_SUCCESS
) {
2705 ehea_error("query_ehea_qp failed (2)");
2709 /* deregister shared memory regions */
2710 dret
= ehea_rem_smrs(pr
);
2712 ehea_error("unreg shared memory region failed");
2724 void ehea_update_rqs(struct ehea_qp
*orig_qp
, struct ehea_port_res
*pr
)
2726 struct ehea_qp qp
= *orig_qp
;
2727 struct ehea_qp_init_attr
*init_attr
= &qp
.init_attr
;
2728 struct ehea_rwqe
*rwqe
;
2729 struct sk_buff
**skba_rq2
= pr
->rq2_skba
.arr
;
2730 struct sk_buff
**skba_rq3
= pr
->rq3_skba
.arr
;
2731 struct sk_buff
*skb
;
2732 u32 lkey
= pr
->recv_mr
.lkey
;
2738 for (i
= 0; i
< init_attr
->act_nr_rwqes_rq2
+ 1; i
++) {
2739 rwqe
= ehea_get_next_rwqe(&qp
, 2);
2740 rwqe
->sg_list
[0].l_key
= lkey
;
2741 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, rwqe
->wr_id
);
2742 skb
= skba_rq2
[index
];
2744 rwqe
->sg_list
[0].vaddr
= ehea_map_vaddr(skb
->data
);
2747 for (i
= 0; i
< init_attr
->act_nr_rwqes_rq3
+ 1; i
++) {
2748 rwqe
= ehea_get_next_rwqe(&qp
, 3);
2749 rwqe
->sg_list
[0].l_key
= lkey
;
2750 index
= EHEA_BMASK_GET(EHEA_WR_ID_INDEX
, rwqe
->wr_id
);
2751 skb
= skba_rq3
[index
];
2753 rwqe
->sg_list
[0].vaddr
= ehea_map_vaddr(skb
->data
);
2757 int ehea_restart_qps(struct net_device
*dev
)
2759 struct ehea_port
*port
= netdev_priv(dev
);
2760 struct ehea_adapter
*adapter
= port
->adapter
;
2764 struct hcp_modify_qp_cb0
*cb0
;
2769 cb0
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2775 for (i
= 0; i
< (port
->num_def_qps
+ port
->num_add_tx_qps
); i
++) {
2776 struct ehea_port_res
*pr
= &port
->port_res
[i
];
2777 struct ehea_qp
*qp
= pr
->qp
;
2779 ret
= ehea_gen_smrs(pr
);
2781 ehea_error("creation of shared memory regions failed");
2785 ehea_update_rqs(qp
, pr
);
2787 /* Enable queue pair */
2788 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2789 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2791 if (hret
!= H_SUCCESS
) {
2792 ehea_error("query_ehea_qp failed (1)");
2796 cb0
->qp_ctl_reg
= (cb0
->qp_ctl_reg
& H_QP_CR_RES_STATE
) << 8;
2797 cb0
->qp_ctl_reg
|= H_QP_CR_ENABLED
;
2799 hret
= ehea_h_modify_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2800 EHEA_BMASK_SET(H_QPCB0_QP_CTL_REG
,
2802 &dummy64
, &dummy16
, &dummy16
);
2803 if (hret
!= H_SUCCESS
) {
2804 ehea_error("modify_ehea_qp failed (1)");
2808 hret
= ehea_h_query_ehea_qp(adapter
->handle
, 0, qp
->fw_handle
,
2809 EHEA_BMASK_SET(H_QPCB0_ALL
, 0xFFFF),
2811 if (hret
!= H_SUCCESS
) {
2812 ehea_error("query_ehea_qp failed (2)");
2816 /* refill entire queue */
2817 ehea_refill_rq1(pr
, pr
->rq1_skba
.index
, 0);
2818 ehea_refill_rq2(pr
, 0);
2819 ehea_refill_rq3(pr
, 0);
2827 static void ehea_reset_port(struct work_struct
*work
)
2830 struct ehea_port
*port
=
2831 container_of(work
, struct ehea_port
, reset_task
);
2832 struct net_device
*dev
= port
->netdev
;
2835 mutex_lock(&port
->port_lock
);
2836 netif_stop_queue(dev
);
2838 port_napi_disable(port
);
2846 ehea_set_multicast_list(dev
);
2848 if (netif_msg_timer(port
))
2849 ehea_info("Device %s resetted successfully", dev
->name
);
2851 port_napi_enable(port
);
2853 netif_wake_queue(dev
);
2855 mutex_unlock(&port
->port_lock
);
2859 static void ehea_rereg_mrs(struct work_struct
*work
)
2862 struct ehea_adapter
*adapter
;
2864 mutex_lock(&dlpar_mem_lock
);
2865 ehea_info("LPAR memory changed - re-initializing driver");
2867 list_for_each_entry(adapter
, &adapter_list
, list
)
2868 if (adapter
->active_ports
) {
2869 /* Shutdown all ports */
2870 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++) {
2871 struct ehea_port
*port
= adapter
->port
[i
];
2872 struct net_device
*dev
;
2879 if (dev
->flags
& IFF_UP
) {
2880 mutex_lock(&port
->port_lock
);
2881 netif_stop_queue(dev
);
2882 ehea_flush_sq(port
);
2883 ret
= ehea_stop_qps(dev
);
2885 mutex_unlock(&port
->port_lock
);
2888 port_napi_disable(port
);
2889 mutex_unlock(&port
->port_lock
);
2893 /* Unregister old memory region */
2894 ret
= ehea_rem_mr(&adapter
->mr
);
2896 ehea_error("unregister MR failed - driver"
2902 clear_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
);
2904 list_for_each_entry(adapter
, &adapter_list
, list
)
2905 if (adapter
->active_ports
) {
2906 /* Register new memory region */
2907 ret
= ehea_reg_kernel_mr(adapter
, &adapter
->mr
);
2909 ehea_error("register MR failed - driver"
2914 /* Restart all ports */
2915 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++) {
2916 struct ehea_port
*port
= adapter
->port
[i
];
2919 struct net_device
*dev
= port
->netdev
;
2921 if (dev
->flags
& IFF_UP
) {
2922 mutex_lock(&port
->port_lock
);
2923 port_napi_enable(port
);
2924 ret
= ehea_restart_qps(dev
);
2926 netif_wake_queue(dev
);
2927 mutex_unlock(&port
->port_lock
);
2932 ehea_info("re-initializing driver complete");
2934 mutex_unlock(&dlpar_mem_lock
);
2938 static void ehea_tx_watchdog(struct net_device
*dev
)
2940 struct ehea_port
*port
= netdev_priv(dev
);
2942 if (netif_carrier_ok(dev
) &&
2943 !test_bit(__EHEA_STOP_XFER
, &ehea_driver_flags
))
2944 ehea_schedule_port_reset(port
);
2947 int ehea_sense_adapter_attr(struct ehea_adapter
*adapter
)
2949 struct hcp_query_ehea
*cb
;
2953 cb
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2959 hret
= ehea_h_query_ehea(adapter
->handle
, cb
);
2961 if (hret
!= H_SUCCESS
) {
2966 adapter
->max_mc_mac
= cb
->max_mc_mac
- 1;
2975 int ehea_get_jumboframe_status(struct ehea_port
*port
, int *jumbo
)
2977 struct hcp_ehea_port_cb4
*cb4
;
2983 /* (Try to) enable *jumbo frames */
2984 cb4
= kzalloc(PAGE_SIZE
, GFP_KERNEL
);
2986 ehea_error("no mem for cb4");
2990 hret
= ehea_h_query_ehea_port(port
->adapter
->handle
,
2991 port
->logical_port_id
,
2993 H_PORT_CB4_JUMBO
, cb4
);
2994 if (hret
== H_SUCCESS
) {
2995 if (cb4
->jumbo_frame
)
2998 cb4
->jumbo_frame
= 1;
2999 hret
= ehea_h_modify_ehea_port(port
->adapter
->
3006 if (hret
== H_SUCCESS
)
3018 static ssize_t
ehea_show_port_id(struct device
*dev
,
3019 struct device_attribute
*attr
, char *buf
)
3021 struct ehea_port
*port
= container_of(dev
, struct ehea_port
, ofdev
.dev
);
3022 return sprintf(buf
, "%d", port
->logical_port_id
);
3025 static DEVICE_ATTR(log_port_id
, S_IRUSR
| S_IRGRP
| S_IROTH
, ehea_show_port_id
,
3028 static void __devinit
logical_port_release(struct device
*dev
)
3030 struct ehea_port
*port
= container_of(dev
, struct ehea_port
, ofdev
.dev
);
3031 of_node_put(port
->ofdev
.node
);
3034 static struct device
*ehea_register_port(struct ehea_port
*port
,
3035 struct device_node
*dn
)
3039 port
->ofdev
.node
= of_node_get(dn
);
3040 port
->ofdev
.dev
.parent
= &port
->adapter
->ofdev
->dev
;
3041 port
->ofdev
.dev
.bus
= &ibmebus_bus_type
;
3043 sprintf(port
->ofdev
.dev
.bus_id
, "port%d", port_name_cnt
++);
3044 port
->ofdev
.dev
.release
= logical_port_release
;
3046 ret
= of_device_register(&port
->ofdev
);
3048 ehea_error("failed to register device. ret=%d", ret
);
3052 ret
= device_create_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
3054 ehea_error("failed to register attributes, ret=%d", ret
);
3055 goto out_unreg_of_dev
;
3058 return &port
->ofdev
.dev
;
3061 of_device_unregister(&port
->ofdev
);
3066 static void ehea_unregister_port(struct ehea_port
*port
)
3068 device_remove_file(&port
->ofdev
.dev
, &dev_attr_log_port_id
);
3069 of_device_unregister(&port
->ofdev
);
3072 struct ehea_port
*ehea_setup_single_port(struct ehea_adapter
*adapter
,
3073 u32 logical_port_id
,
3074 struct device_node
*dn
)
3077 struct net_device
*dev
;
3078 struct ehea_port
*port
;
3079 struct device
*port_dev
;
3082 /* allocate memory for the port structures */
3083 dev
= alloc_etherdev(sizeof(struct ehea_port
));
3086 ehea_error("no mem for net_device");
3091 port
= netdev_priv(dev
);
3093 mutex_init(&port
->port_lock
);
3094 port
->state
= EHEA_PORT_DOWN
;
3095 port
->sig_comp_iv
= sq_entries
/ 10;
3097 port
->adapter
= adapter
;
3099 port
->logical_port_id
= logical_port_id
;
3101 port
->msg_enable
= netif_msg_init(msg_level
, EHEA_MSG_DEFAULT
);
3103 port
->mc_list
= kzalloc(sizeof(struct ehea_mc_list
), GFP_KERNEL
);
3104 if (!port
->mc_list
) {
3106 goto out_free_ethdev
;
3109 INIT_LIST_HEAD(&port
->mc_list
->list
);
3111 ret
= ehea_sense_port_attr(port
);
3113 goto out_free_mc_list
;
3115 port_dev
= ehea_register_port(port
, dn
);
3117 goto out_free_mc_list
;
3119 SET_NETDEV_DEV(dev
, port_dev
);
3121 /* initialize net_device structure */
3122 memcpy(dev
->dev_addr
, &port
->mac_addr
, ETH_ALEN
);
3124 dev
->open
= ehea_open
;
3125 #ifdef CONFIG_NET_POLL_CONTROLLER
3126 dev
->poll_controller
= ehea_netpoll
;
3128 dev
->stop
= ehea_stop
;
3129 dev
->hard_start_xmit
= ehea_start_xmit
;
3130 dev
->get_stats
= ehea_get_stats
;
3131 dev
->set_multicast_list
= ehea_set_multicast_list
;
3132 dev
->set_mac_address
= ehea_set_mac_addr
;
3133 dev
->change_mtu
= ehea_change_mtu
;
3134 dev
->vlan_rx_register
= ehea_vlan_rx_register
;
3135 dev
->vlan_rx_add_vid
= ehea_vlan_rx_add_vid
;
3136 dev
->vlan_rx_kill_vid
= ehea_vlan_rx_kill_vid
;
3137 dev
->features
= NETIF_F_SG
| NETIF_F_FRAGLIST
| NETIF_F_TSO
3138 | NETIF_F_HIGHDMA
| NETIF_F_IP_CSUM
| NETIF_F_HW_VLAN_TX
3139 | NETIF_F_HW_VLAN_RX
| NETIF_F_HW_VLAN_FILTER
3141 dev
->tx_timeout
= &ehea_tx_watchdog
;
3142 dev
->watchdog_timeo
= EHEA_WATCH_DOG_TIMEOUT
;
3144 INIT_WORK(&port
->reset_task
, ehea_reset_port
);
3145 ehea_set_ethtool_ops(dev
);
3147 ret
= register_netdev(dev
);
3149 ehea_error("register_netdev failed. ret=%d", ret
);
3150 goto out_unreg_port
;
3153 port
->lro_max_aggr
= lro_max_aggr
;
3155 ret
= ehea_get_jumboframe_status(port
, &jumbo
);
3157 ehea_error("failed determining jumbo frame status for %s",
3158 port
->netdev
->name
);
3160 ehea_info("%s: Jumbo frames are %sabled", dev
->name
,
3161 jumbo
== 1 ? "en" : "dis");
3163 adapter
->active_ports
++;
3168 ehea_unregister_port(port
);
3171 kfree(port
->mc_list
);
3177 ehea_error("setting up logical port with id=%d failed, ret=%d",
3178 logical_port_id
, ret
);
3182 static void ehea_shutdown_single_port(struct ehea_port
*port
)
3184 struct ehea_adapter
*adapter
= port
->adapter
;
3185 unregister_netdev(port
->netdev
);
3186 ehea_unregister_port(port
);
3187 kfree(port
->mc_list
);
3188 free_netdev(port
->netdev
);
3189 adapter
->active_ports
--;
3192 static int ehea_setup_ports(struct ehea_adapter
*adapter
)
3194 struct device_node
*lhea_dn
;
3195 struct device_node
*eth_dn
= NULL
;
3197 const u32
*dn_log_port_id
;
3200 lhea_dn
= adapter
->ofdev
->node
;
3201 while ((eth_dn
= of_get_next_child(lhea_dn
, eth_dn
))) {
3203 dn_log_port_id
= of_get_property(eth_dn
, "ibm,hea-port-no",
3205 if (!dn_log_port_id
) {
3206 ehea_error("bad device node: eth_dn name=%s",
3211 if (ehea_add_adapter_mr(adapter
)) {
3212 ehea_error("creating MR failed");
3213 of_node_put(eth_dn
);
3217 adapter
->port
[i
] = ehea_setup_single_port(adapter
,
3220 if (adapter
->port
[i
])
3221 ehea_info("%s -> logical port id #%d",
3222 adapter
->port
[i
]->netdev
->name
,
3225 ehea_remove_adapter_mr(adapter
);
3232 static struct device_node
*ehea_get_eth_dn(struct ehea_adapter
*adapter
,
3233 u32 logical_port_id
)
3235 struct device_node
*lhea_dn
;
3236 struct device_node
*eth_dn
= NULL
;
3237 const u32
*dn_log_port_id
;
3239 lhea_dn
= adapter
->ofdev
->node
;
3240 while ((eth_dn
= of_get_next_child(lhea_dn
, eth_dn
))) {
3242 dn_log_port_id
= of_get_property(eth_dn
, "ibm,hea-port-no",
3245 if (*dn_log_port_id
== logical_port_id
)
3252 static ssize_t
ehea_probe_port(struct device
*dev
,
3253 struct device_attribute
*attr
,
3254 const char *buf
, size_t count
)
3256 struct ehea_adapter
*adapter
= dev
->driver_data
;
3257 struct ehea_port
*port
;
3258 struct device_node
*eth_dn
= NULL
;
3261 u32 logical_port_id
;
3263 sscanf(buf
, "%d", &logical_port_id
);
3265 port
= ehea_get_port(adapter
, logical_port_id
);
3268 ehea_info("adding port with logical port id=%d failed. port "
3269 "already configured as %s.", logical_port_id
,
3270 port
->netdev
->name
);
3274 eth_dn
= ehea_get_eth_dn(adapter
, logical_port_id
);
3277 ehea_info("no logical port with id %d found", logical_port_id
);
3281 if (ehea_add_adapter_mr(adapter
)) {
3282 ehea_error("creating MR failed");
3286 port
= ehea_setup_single_port(adapter
, logical_port_id
, eth_dn
);
3288 of_node_put(eth_dn
);
3291 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3292 if (!adapter
->port
[i
]) {
3293 adapter
->port
[i
] = port
;
3297 ehea_info("added %s (logical port id=%d)", port
->netdev
->name
,
3300 ehea_remove_adapter_mr(adapter
);
3304 return (ssize_t
) count
;
3307 static ssize_t
ehea_remove_port(struct device
*dev
,
3308 struct device_attribute
*attr
,
3309 const char *buf
, size_t count
)
3311 struct ehea_adapter
*adapter
= dev
->driver_data
;
3312 struct ehea_port
*port
;
3314 u32 logical_port_id
;
3316 sscanf(buf
, "%d", &logical_port_id
);
3318 port
= ehea_get_port(adapter
, logical_port_id
);
3321 ehea_info("removed %s (logical port id=%d)", port
->netdev
->name
,
3324 ehea_shutdown_single_port(port
);
3326 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3327 if (adapter
->port
[i
] == port
) {
3328 adapter
->port
[i
] = NULL
;
3332 ehea_error("removing port with logical port id=%d failed. port "
3333 "not configured.", logical_port_id
);
3337 ehea_remove_adapter_mr(adapter
);
3339 return (ssize_t
) count
;
3342 static DEVICE_ATTR(probe_port
, S_IWUSR
, NULL
, ehea_probe_port
);
3343 static DEVICE_ATTR(remove_port
, S_IWUSR
, NULL
, ehea_remove_port
);
3345 int ehea_create_device_sysfs(struct of_device
*dev
)
3347 int ret
= device_create_file(&dev
->dev
, &dev_attr_probe_port
);
3351 ret
= device_create_file(&dev
->dev
, &dev_attr_remove_port
);
3356 void ehea_remove_device_sysfs(struct of_device
*dev
)
3358 device_remove_file(&dev
->dev
, &dev_attr_probe_port
);
3359 device_remove_file(&dev
->dev
, &dev_attr_remove_port
);
3362 static int __devinit
ehea_probe_adapter(struct of_device
*dev
,
3363 const struct of_device_id
*id
)
3365 struct ehea_adapter
*adapter
;
3366 const u64
*adapter_handle
;
3369 if (!dev
|| !dev
->node
) {
3370 ehea_error("Invalid ibmebus device probed");
3373 mutex_lock(&ehea_fw_handles
.lock
);
3375 adapter
= kzalloc(sizeof(*adapter
), GFP_KERNEL
);
3378 dev_err(&dev
->dev
, "no mem for ehea_adapter\n");
3382 list_add(&adapter
->list
, &adapter_list
);
3384 adapter
->ofdev
= dev
;
3386 adapter_handle
= of_get_property(dev
->node
, "ibm,hea-handle",
3389 adapter
->handle
= *adapter_handle
;
3391 if (!adapter
->handle
) {
3392 dev_err(&dev
->dev
, "failed getting handle for adapter"
3393 " '%s'\n", dev
->node
->full_name
);
3398 adapter
->pd
= EHEA_PD_ID
;
3400 dev
->dev
.driver_data
= adapter
;
3403 /* initialize adapter and ports */
3404 /* get adapter properties */
3405 ret
= ehea_sense_adapter_attr(adapter
);
3407 dev_err(&dev
->dev
, "sense_adapter_attr failed: %d\n", ret
);
3411 adapter
->neq
= ehea_create_eq(adapter
,
3412 EHEA_NEQ
, EHEA_MAX_ENTRIES_EQ
, 1);
3413 if (!adapter
->neq
) {
3415 dev_err(&dev
->dev
, "NEQ creation failed\n");
3419 tasklet_init(&adapter
->neq_tasklet
, ehea_neq_tasklet
,
3420 (unsigned long)adapter
);
3422 ret
= ibmebus_request_irq(adapter
->neq
->attr
.ist1
,
3423 ehea_interrupt_neq
, IRQF_DISABLED
,
3424 "ehea_neq", adapter
);
3426 dev_err(&dev
->dev
, "requesting NEQ IRQ failed\n");
3430 ret
= ehea_create_device_sysfs(dev
);
3434 ret
= ehea_setup_ports(adapter
);
3436 dev_err(&dev
->dev
, "setup_ports failed\n");
3437 goto out_rem_dev_sysfs
;
3444 ehea_remove_device_sysfs(dev
);
3447 ibmebus_free_irq(adapter
->neq
->attr
.ist1
, adapter
);
3450 ehea_destroy_eq(adapter
->neq
);
3456 ehea_update_firmware_handles();
3457 mutex_unlock(&ehea_fw_handles
.lock
);
3461 static int __devexit
ehea_remove(struct of_device
*dev
)
3463 struct ehea_adapter
*adapter
= dev
->dev
.driver_data
;
3466 for (i
= 0; i
< EHEA_MAX_PORTS
; i
++)
3467 if (adapter
->port
[i
]) {
3468 ehea_shutdown_single_port(adapter
->port
[i
]);
3469 adapter
->port
[i
] = NULL
;
3472 ehea_remove_device_sysfs(dev
);
3474 flush_scheduled_work();
3476 mutex_lock(&ehea_fw_handles
.lock
);
3478 ibmebus_free_irq(adapter
->neq
->attr
.ist1
, adapter
);
3479 tasklet_kill(&adapter
->neq_tasklet
);
3481 ehea_destroy_eq(adapter
->neq
);
3482 ehea_remove_adapter_mr(adapter
);
3483 list_del(&adapter
->list
);
3486 ehea_update_firmware_handles();
3487 mutex_unlock(&ehea_fw_handles
.lock
);
3492 void ehea_crash_handler(void)
3496 if (ehea_fw_handles
.arr
)
3497 for (i
= 0; i
< ehea_fw_handles
.num_entries
; i
++)
3498 ehea_h_free_resource(ehea_fw_handles
.arr
[i
].adh
,
3499 ehea_fw_handles
.arr
[i
].fwh
,
3502 if (ehea_bcmc_regs
.arr
)
3503 for (i
= 0; i
< ehea_bcmc_regs
.num_entries
; i
++)
3504 ehea_h_reg_dereg_bcmc(ehea_bcmc_regs
.arr
[i
].adh
,
3505 ehea_bcmc_regs
.arr
[i
].port_id
,
3506 ehea_bcmc_regs
.arr
[i
].reg_type
,
3507 ehea_bcmc_regs
.arr
[i
].macaddr
,
3511 static int ehea_mem_notifier(struct notifier_block
*nb
,
3512 unsigned long action
, void *data
)
3514 struct memory_notify
*arg
= data
;
3516 case MEM_CANCEL_OFFLINE
:
3517 ehea_info("memory offlining canceled");
3518 /* Readd canceled memory block */
3520 ehea_info("memory is going online");
3521 if (ehea_add_sect_bmap(arg
->start_pfn
, arg
->nr_pages
))
3523 ehea_rereg_mrs(NULL
);
3525 case MEM_GOING_OFFLINE
:
3526 ehea_info("memory is going offline");
3527 if (ehea_rem_sect_bmap(arg
->start_pfn
, arg
->nr_pages
))
3529 ehea_rereg_mrs(NULL
);
3537 static struct notifier_block ehea_mem_nb
= {
3538 .notifier_call
= ehea_mem_notifier
,
3541 static int ehea_reboot_notifier(struct notifier_block
*nb
,
3542 unsigned long action
, void *unused
)
3544 if (action
== SYS_RESTART
) {
3545 ehea_info("Reboot: freeing all eHEA resources");
3546 ibmebus_unregister_driver(&ehea_driver
);
3551 static struct notifier_block ehea_reboot_nb
= {
3552 .notifier_call
= ehea_reboot_notifier
,
3555 static int check_module_parm(void)
3559 if ((rq1_entries
< EHEA_MIN_ENTRIES_QP
) ||
3560 (rq1_entries
> EHEA_MAX_ENTRIES_RQ1
)) {
3561 ehea_info("Bad parameter: rq1_entries");
3564 if ((rq2_entries
< EHEA_MIN_ENTRIES_QP
) ||
3565 (rq2_entries
> EHEA_MAX_ENTRIES_RQ2
)) {
3566 ehea_info("Bad parameter: rq2_entries");
3569 if ((rq3_entries
< EHEA_MIN_ENTRIES_QP
) ||
3570 (rq3_entries
> EHEA_MAX_ENTRIES_RQ3
)) {
3571 ehea_info("Bad parameter: rq3_entries");
3574 if ((sq_entries
< EHEA_MIN_ENTRIES_QP
) ||
3575 (sq_entries
> EHEA_MAX_ENTRIES_SQ
)) {
3576 ehea_info("Bad parameter: sq_entries");
3583 static ssize_t
ehea_show_capabilities(struct device_driver
*drv
,
3586 return sprintf(buf
, "%d", EHEA_CAPABILITIES
);
3589 static DRIVER_ATTR(capabilities
, S_IRUSR
| S_IRGRP
| S_IROTH
,
3590 ehea_show_capabilities
, NULL
);
3592 int __init
ehea_module_init(void)
3596 printk(KERN_INFO
"IBM eHEA ethernet device driver (Release %s)\n",
3600 INIT_WORK(&ehea_rereg_mr_task
, ehea_rereg_mrs
);
3601 memset(&ehea_fw_handles
, 0, sizeof(ehea_fw_handles
));
3602 memset(&ehea_bcmc_regs
, 0, sizeof(ehea_bcmc_regs
));
3604 mutex_init(&ehea_fw_handles
.lock
);
3605 spin_lock_init(&ehea_bcmc_regs
.lock
);
3607 ret
= check_module_parm();
3611 ret
= ehea_create_busmap();
3615 ret
= register_reboot_notifier(&ehea_reboot_nb
);
3617 ehea_info("failed registering reboot notifier");
3619 ret
= register_memory_notifier(&ehea_mem_nb
);
3621 ehea_info("failed registering memory remove notifier");
3623 ret
= crash_shutdown_register(&ehea_crash_handler
);
3625 ehea_info("failed registering crash handler");
3627 ret
= ibmebus_register_driver(&ehea_driver
);
3629 ehea_error("failed registering eHEA device driver on ebus");
3633 ret
= driver_create_file(&ehea_driver
.driver
,
3634 &driver_attr_capabilities
);
3636 ehea_error("failed to register capabilities attribute, ret=%d",
3644 ibmebus_unregister_driver(&ehea_driver
);
3646 unregister_memory_notifier(&ehea_mem_nb
);
3647 unregister_reboot_notifier(&ehea_reboot_nb
);
3648 crash_shutdown_unregister(&ehea_crash_handler
);
3653 static void __exit
ehea_module_exit(void)
3657 flush_scheduled_work();
3658 driver_remove_file(&ehea_driver
.driver
, &driver_attr_capabilities
);
3659 ibmebus_unregister_driver(&ehea_driver
);
3660 unregister_reboot_notifier(&ehea_reboot_nb
);
3661 ret
= crash_shutdown_unregister(&ehea_crash_handler
);
3663 ehea_info("failed unregistering crash handler");
3664 unregister_memory_notifier(&ehea_mem_nb
);
3665 kfree(ehea_fw_handles
.arr
);
3666 kfree(ehea_bcmc_regs
.arr
);
3667 ehea_destroy_busmap();
3670 module_init(ehea_module_init
);
3671 module_exit(ehea_module_exit
);