91fdde382e82e9d936d263d012993415aa2ca640
[linux-2.6.git] / drivers / infiniband / hw / nes / nes_nic.c
1 /*
2  * Copyright (c) 2006 - 2009 Intel Corporation.  All rights reserved.
3  *
4  * This software is available to you under a choice of one of two
5  * licenses.  You may choose to be licensed under the terms of the GNU
6  * General Public License (GPL) Version 2, available from the file
7  * COPYING in the main directory of this source tree, or the
8  * OpenIB.org BSD license below:
9  *
10  *     Redistribution and use in source and binary forms, with or
11  *     without modification, are permitted provided that the following
12  *     conditions are met:
13  *
14  *      - Redistributions of source code must retain the above
15  *        copyright notice, this list of conditions and the following
16  *        disclaimer.
17  *
18  *      - Redistributions in binary form must reproduce the above
19  *        copyright notice, this list of conditions and the following
20  *        disclaimer in the documentation and/or other materials
21  *        provided with the distribution.
22  *
23  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
24  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
25  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
26  * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
27  * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
28  * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
29  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
30  * SOFTWARE.
31  *
32  */
33
34 #include <linux/module.h>
35 #include <linux/moduleparam.h>
36 #include <linux/netdevice.h>
37 #include <linux/etherdevice.h>
38 #include <linux/ip.h>
39 #include <linux/tcp.h>
40 #include <linux/if_arp.h>
41 #include <linux/if_vlan.h>
42 #include <linux/ethtool.h>
43 #include <net/tcp.h>
44
45 #include <net/inet_common.h>
46 #include <linux/inet.h>
47
48 #include "nes.h"
49
50 static struct nic_qp_map nic_qp_mapping_0[] = {
51         {16,0,0,1},{24,4,0,0},{28,8,0,0},{32,12,0,0},
52         {20,2,2,1},{26,6,2,0},{30,10,2,0},{34,14,2,0},
53         {18,1,1,1},{25,5,1,0},{29,9,1,0},{33,13,1,0},
54         {22,3,3,1},{27,7,3,0},{31,11,3,0},{35,15,3,0}
55 };
56
57 static struct nic_qp_map nic_qp_mapping_1[] = {
58         {18,1,1,1},{25,5,1,0},{29,9,1,0},{33,13,1,0},
59         {22,3,3,1},{27,7,3,0},{31,11,3,0},{35,15,3,0}
60 };
61
62 static struct nic_qp_map nic_qp_mapping_2[] = {
63         {20,2,2,1},{26,6,2,0},{30,10,2,0},{34,14,2,0}
64 };
65
66 static struct nic_qp_map nic_qp_mapping_3[] = {
67         {22,3,3,1},{27,7,3,0},{31,11,3,0},{35,15,3,0}
68 };
69
70 static struct nic_qp_map nic_qp_mapping_4[] = {
71         {28,8,0,0},{32,12,0,0}
72 };
73
74 static struct nic_qp_map nic_qp_mapping_5[] = {
75         {29,9,1,0},{33,13,1,0}
76 };
77
78 static struct nic_qp_map nic_qp_mapping_6[] = {
79         {30,10,2,0},{34,14,2,0}
80 };
81
82 static struct nic_qp_map nic_qp_mapping_7[] = {
83         {31,11,3,0},{35,15,3,0}
84 };
85
86 static struct nic_qp_map *nic_qp_mapping_per_function[] = {
87         nic_qp_mapping_0, nic_qp_mapping_1, nic_qp_mapping_2, nic_qp_mapping_3,
88         nic_qp_mapping_4, nic_qp_mapping_5, nic_qp_mapping_6, nic_qp_mapping_7
89 };
90
91 static const u32 default_msg = NETIF_MSG_DRV | NETIF_MSG_PROBE | NETIF_MSG_LINK
92                 | NETIF_MSG_IFUP | NETIF_MSG_IFDOWN;
93 static int debug = -1;
94 static int nics_per_function = 1;
95
96 /**
97  * nes_netdev_poll
98  */
99 static int nes_netdev_poll(struct napi_struct *napi, int budget)
100 {
101         struct nes_vnic *nesvnic = container_of(napi, struct nes_vnic, napi);
102         struct nes_device *nesdev = nesvnic->nesdev;
103         struct nes_hw_nic_cq *nescq = &nesvnic->nic_cq;
104
105         nesvnic->budget = budget;
106         nescq->cqes_pending = 0;
107         nescq->rx_cqes_completed = 0;
108         nescq->cqe_allocs_pending = 0;
109         nescq->rx_pkts_indicated = 0;
110
111         nes_nic_ce_handler(nesdev, nescq);
112
113         if (nescq->cqes_pending == 0) {
114                 napi_complete(napi);
115                 /* clear out completed cqes and arm */
116                 nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
117                                 nescq->cq_number | (nescq->cqe_allocs_pending << 16));
118                 nes_read32(nesdev->regs+NES_CQE_ALLOC);
119         } else {
120                 /* clear out completed cqes but don't arm */
121                 nes_write32(nesdev->regs+NES_CQE_ALLOC,
122                                 nescq->cq_number | (nescq->cqe_allocs_pending << 16));
123                 nes_debug(NES_DBG_NETDEV, "%s: exiting with work pending\n",
124                                 nesvnic->netdev->name);
125         }
126         return nescq->rx_pkts_indicated;
127 }
128
129
130 /**
131  * nes_netdev_open - Activate the network interface; ifconfig
132  * ethx up.
133  */
134 static int nes_netdev_open(struct net_device *netdev)
135 {
136         u32 macaddr_low;
137         u16 macaddr_high;
138         struct nes_vnic *nesvnic = netdev_priv(netdev);
139         struct nes_device *nesdev = nesvnic->nesdev;
140         int ret;
141         int i;
142         struct nes_vnic *first_nesvnic = NULL;
143         u32 nic_active_bit;
144         u32 nic_active;
145         struct list_head *list_pos, *list_temp;
146
147         assert(nesdev != NULL);
148
149         if (nesvnic->netdev_open == 1)
150                 return 0;
151
152         if (netif_msg_ifup(nesvnic))
153                 printk(KERN_INFO PFX "%s: enabling interface\n", netdev->name);
154
155         ret = nes_init_nic_qp(nesdev, netdev);
156         if (ret) {
157                 return ret;
158         }
159
160         netif_carrier_off(netdev);
161         netif_stop_queue(netdev);
162
163         if ((!nesvnic->of_device_registered) && (nesvnic->rdma_enabled)) {
164                 nesvnic->nesibdev = nes_init_ofa_device(netdev);
165                 if (nesvnic->nesibdev == NULL) {
166                         printk(KERN_ERR PFX "%s: nesvnic->nesibdev alloc failed", netdev->name);
167                 } else {
168                         nesvnic->nesibdev->nesvnic = nesvnic;
169                         ret = nes_register_ofa_device(nesvnic->nesibdev);
170                         if (ret) {
171                                 printk(KERN_ERR PFX "%s: Unable to register RDMA device, ret = %d\n",
172                                                 netdev->name, ret);
173                         }
174                 }
175         }
176         /* Set packet filters */
177         nic_active_bit = 1 << nesvnic->nic_index;
178         nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_ACTIVE);
179         nic_active |= nic_active_bit;
180         nes_write_indexed(nesdev, NES_IDX_NIC_ACTIVE, nic_active);
181         nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ENABLE);
182         nic_active |= nic_active_bit;
183         nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ENABLE, nic_active);
184         nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_BROADCAST_ON);
185         nic_active |= nic_active_bit;
186         nes_write_indexed(nesdev, NES_IDX_NIC_BROADCAST_ON, nic_active);
187
188         macaddr_high  = ((u16)netdev->dev_addr[0]) << 8;
189         macaddr_high += (u16)netdev->dev_addr[1];
190
191         macaddr_low   = ((u32)netdev->dev_addr[2]) << 24;
192         macaddr_low  += ((u32)netdev->dev_addr[3]) << 16;
193         macaddr_low  += ((u32)netdev->dev_addr[4]) << 8;
194         macaddr_low  += (u32)netdev->dev_addr[5];
195
196         /* Program the various MAC regs */
197         for (i = 0; i < NES_MAX_PORT_COUNT; i++) {
198                 if (nesvnic->qp_nic_index[i] == 0xf) {
199                         break;
200                 }
201                 nes_debug(NES_DBG_NETDEV, "i=%d, perfect filter table index= %d, PERF FILTER LOW"
202                                 " (Addr:%08X) = %08X, HIGH = %08X.\n",
203                                 i, nesvnic->qp_nic_index[i],
204                                 NES_IDX_PERFECT_FILTER_LOW+
205                                         (nesvnic->qp_nic_index[i] * 8),
206                                 macaddr_low,
207                                 (u32)macaddr_high | NES_MAC_ADDR_VALID |
208                                 ((((u32)nesvnic->nic_index) << 16)));
209                 nes_write_indexed(nesdev,
210                                 NES_IDX_PERFECT_FILTER_LOW + (nesvnic->qp_nic_index[i] * 8),
211                                 macaddr_low);
212                 nes_write_indexed(nesdev,
213                                 NES_IDX_PERFECT_FILTER_HIGH + (nesvnic->qp_nic_index[i] * 8),
214                                 (u32)macaddr_high | NES_MAC_ADDR_VALID |
215                                 ((((u32)nesvnic->nic_index) << 16)));
216         }
217
218
219         nes_write32(nesdev->regs+NES_CQE_ALLOC, NES_CQE_ALLOC_NOTIFY_NEXT |
220                         nesvnic->nic_cq.cq_number);
221         nes_read32(nesdev->regs+NES_CQE_ALLOC);
222         list_for_each_safe(list_pos, list_temp, &nesdev->nesadapter->nesvnic_list[nesdev->mac_index]) {
223                 first_nesvnic = container_of(list_pos, struct nes_vnic, list);
224                 if (first_nesvnic->netdev_open == 1)
225                         break;
226         }
227         if (first_nesvnic->netdev_open == 0) {
228                 nes_debug(NES_DBG_INIT, "Setting up MAC interrupt mask.\n");
229                 nes_write_indexed(nesdev, NES_IDX_MAC_INT_MASK + (0x200 * nesdev->mac_index),
230                                 ~(NES_MAC_INT_LINK_STAT_CHG | NES_MAC_INT_XGMII_EXT |
231                                 NES_MAC_INT_TX_UNDERFLOW | NES_MAC_INT_TX_ERROR));
232                 first_nesvnic = nesvnic;
233         }
234         if (first_nesvnic->linkup) {
235                 /* Enable network packets */
236                 nesvnic->linkup = 1;
237                 netif_start_queue(netdev);
238                 netif_carrier_on(netdev);
239         }
240         napi_enable(&nesvnic->napi);
241         nesvnic->netdev_open = 1;
242
243         return 0;
244 }
245
246
247 /**
248  * nes_netdev_stop
249  */
250 static int nes_netdev_stop(struct net_device *netdev)
251 {
252         struct nes_vnic *nesvnic = netdev_priv(netdev);
253         struct nes_device *nesdev = nesvnic->nesdev;
254         u32 nic_active_mask;
255         u32 nic_active;
256         struct nes_vnic *first_nesvnic = NULL;
257         struct list_head *list_pos, *list_temp;
258
259         nes_debug(NES_DBG_SHUTDOWN, "nesvnic=%p, nesdev=%p, netdev=%p %s\n",
260                         nesvnic, nesdev, netdev, netdev->name);
261         if (nesvnic->netdev_open == 0)
262                 return 0;
263
264         if (netif_msg_ifdown(nesvnic))
265                 printk(KERN_INFO PFX "%s: disabling interface\n", netdev->name);
266
267         /* Disable network packets */
268         napi_disable(&nesvnic->napi);
269         netif_stop_queue(netdev);
270         list_for_each_safe(list_pos, list_temp, &nesdev->nesadapter->nesvnic_list[nesdev->mac_index]) {
271                 first_nesvnic = container_of(list_pos, struct nes_vnic, list);
272                 if ((first_nesvnic->netdev_open == 1) && (first_nesvnic != nesvnic))
273                         break;
274         }
275
276         if ((first_nesvnic->netdev_open == 1) && (first_nesvnic != nesvnic)  &&
277                 (PCI_FUNC(first_nesvnic->nesdev->pcidev->devfn) !=
278                 PCI_FUNC(nesvnic->nesdev->pcidev->devfn))) {
279                         nes_write_indexed(nesdev, NES_IDX_MAC_INT_MASK+
280                                 (0x200*nesdev->mac_index), 0xffffffff);
281                         nes_write_indexed(first_nesvnic->nesdev,
282                                 NES_IDX_MAC_INT_MASK+
283                                 (0x200*first_nesvnic->nesdev->mac_index),
284                         ~(NES_MAC_INT_LINK_STAT_CHG | NES_MAC_INT_XGMII_EXT |
285                         NES_MAC_INT_TX_UNDERFLOW | NES_MAC_INT_TX_ERROR));
286         } else {
287                 nes_write_indexed(nesdev, NES_IDX_MAC_INT_MASK+(0x200*nesdev->mac_index), 0xffffffff);
288         }
289
290         nic_active_mask = ~((u32)(1 << nesvnic->nic_index));
291         nes_write_indexed(nesdev, NES_IDX_PERFECT_FILTER_HIGH+
292                         (nesvnic->perfect_filter_index*8), 0);
293         nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_ACTIVE);
294         nic_active &= nic_active_mask;
295         nes_write_indexed(nesdev, NES_IDX_NIC_ACTIVE, nic_active);
296         nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL);
297         nic_active &= nic_active_mask;
298         nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL, nic_active);
299         nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ENABLE);
300         nic_active &= nic_active_mask;
301         nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ENABLE, nic_active);
302         nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);
303         nic_active &= nic_active_mask;
304         nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
305         nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_BROADCAST_ON);
306         nic_active &= nic_active_mask;
307         nes_write_indexed(nesdev, NES_IDX_NIC_BROADCAST_ON, nic_active);
308
309
310         if (nesvnic->of_device_registered) {
311                 nes_destroy_ofa_device(nesvnic->nesibdev);
312                 nesvnic->nesibdev = NULL;
313                 nesvnic->of_device_registered = 0;
314         }
315         nes_destroy_nic_qp(nesvnic);
316
317         nesvnic->netdev_open = 0;
318
319         return 0;
320 }
321
322
323 /**
324  * nes_nic_send
325  */
326 static int nes_nic_send(struct sk_buff *skb, struct net_device *netdev)
327 {
328         struct nes_vnic *nesvnic = netdev_priv(netdev);
329         struct nes_device *nesdev = nesvnic->nesdev;
330         struct nes_hw_nic *nesnic = &nesvnic->nic;
331         struct nes_hw_nic_sq_wqe *nic_sqe;
332         struct tcphdr *tcph;
333         __le16 *wqe_fragment_length;
334         u32 wqe_misc;
335         u16 wqe_fragment_index = 1;     /* first fragment (0) is used by copy buffer */
336         u16 skb_fragment_index;
337         dma_addr_t bus_address;
338
339         nic_sqe = &nesnic->sq_vbase[nesnic->sq_head];
340         wqe_fragment_length = (__le16 *)&nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX];
341
342         /* setup the VLAN tag if present */
343         if (vlan_tx_tag_present(skb)) {
344                 nes_debug(NES_DBG_NIC_TX, "%s: VLAN packet to send... VLAN = %08X\n",
345                                 netdev->name, vlan_tx_tag_get(skb));
346                 wqe_misc = NES_NIC_SQ_WQE_TAGVALUE_ENABLE;
347                 wqe_fragment_length[0] = (__force __le16) vlan_tx_tag_get(skb);
348         } else
349                 wqe_misc = 0;
350
351         /* bump past the vlan tag */
352         wqe_fragment_length++;
353         /*      wqe_fragment_address = (u64 *)&nic_sqe->wqe_words[NES_NIC_SQ_WQE_FRAG0_LOW_IDX]; */
354
355         if (skb->ip_summed == CHECKSUM_PARTIAL) {
356                 tcph = tcp_hdr(skb);
357                 if (1) {
358                         if (skb_is_gso(skb)) {
359                                 /* nes_debug(NES_DBG_NIC_TX, "%s: TSO request... seg size = %u\n",
360                                                 netdev->name, skb_is_gso(skb)); */
361                                 wqe_misc |= NES_NIC_SQ_WQE_LSO_ENABLE |
362                                                 NES_NIC_SQ_WQE_COMPLETION | (u16)skb_is_gso(skb);
363                                 set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_LSO_INFO_IDX,
364                                                 ((u32)tcph->doff) |
365                                                 (((u32)(((unsigned char *)tcph) - skb->data)) << 4));
366                         } else {
367                                 wqe_misc |= NES_NIC_SQ_WQE_COMPLETION;
368                         }
369                 }
370         } else {        /* CHECKSUM_HW */
371                 wqe_misc |= NES_NIC_SQ_WQE_DISABLE_CHKSUM | NES_NIC_SQ_WQE_COMPLETION;
372         }
373
374         set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_TOTAL_LENGTH_IDX,
375                                 skb->len);
376         memcpy(&nesnic->first_frag_vbase[nesnic->sq_head].buffer,
377                         skb->data, min(((unsigned int)NES_FIRST_FRAG_SIZE), skb_headlen(skb)));
378         wqe_fragment_length[0] = cpu_to_le16(min(((unsigned int)NES_FIRST_FRAG_SIZE),
379                         skb_headlen(skb)));
380         wqe_fragment_length[1] = 0;
381         if (skb_headlen(skb) > NES_FIRST_FRAG_SIZE) {
382                 if ((skb_shinfo(skb)->nr_frags + 1) > 4) {
383                         nes_debug(NES_DBG_NIC_TX, "%s: Packet with %u fragments not sent, skb_headlen=%u\n",
384                                         netdev->name, skb_shinfo(skb)->nr_frags + 2, skb_headlen(skb));
385                         kfree_skb(skb);
386                         nesvnic->tx_sw_dropped++;
387                         return NETDEV_TX_LOCKED;
388                 }
389                 set_bit(nesnic->sq_head, nesnic->first_frag_overflow);
390                 bus_address = pci_map_single(nesdev->pcidev, skb->data + NES_FIRST_FRAG_SIZE,
391                                 skb_headlen(skb) - NES_FIRST_FRAG_SIZE, PCI_DMA_TODEVICE);
392                 wqe_fragment_length[wqe_fragment_index++] =
393                                 cpu_to_le16(skb_headlen(skb) - NES_FIRST_FRAG_SIZE);
394                 wqe_fragment_length[wqe_fragment_index] = 0;
395                 set_wqe_64bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_FRAG1_LOW_IDX,
396                                 ((u64)(bus_address)));
397                 nesnic->tx_skb[nesnic->sq_head] = skb;
398         }
399
400         if (skb_headlen(skb) == skb->len) {
401                 if (skb_headlen(skb) <= NES_FIRST_FRAG_SIZE) {
402                         nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_2_1_IDX] = 0;
403                         nesnic->tx_skb[nesnic->sq_head] = skb;
404                 }
405         } else {
406                 /* Deal with Fragments */
407                 nesnic->tx_skb[nesnic->sq_head] = skb;
408                 for (skb_fragment_index = 0; skb_fragment_index < skb_shinfo(skb)->nr_frags;
409                                 skb_fragment_index++) {
410                         bus_address = pci_map_page( nesdev->pcidev,
411                                         skb_shinfo(skb)->frags[skb_fragment_index].page,
412                                         skb_shinfo(skb)->frags[skb_fragment_index].page_offset,
413                                         skb_shinfo(skb)->frags[skb_fragment_index].size,
414                                         PCI_DMA_TODEVICE);
415                         wqe_fragment_length[wqe_fragment_index] =
416                                         cpu_to_le16(skb_shinfo(skb)->frags[skb_fragment_index].size);
417                         set_wqe_64bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_FRAG0_LOW_IDX+(2*wqe_fragment_index),
418                                 bus_address);
419                         wqe_fragment_index++;
420                         if (wqe_fragment_index < 5)
421                                 wqe_fragment_length[wqe_fragment_index] = 0;
422                 }
423         }
424
425         set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_MISC_IDX, wqe_misc);
426         nesnic->sq_head++;
427         nesnic->sq_head &= nesnic->sq_size - 1;
428
429         return NETDEV_TX_OK;
430 }
431
432
433 /**
434  * nes_netdev_start_xmit
435  */
436 static int nes_netdev_start_xmit(struct sk_buff *skb, struct net_device *netdev)
437 {
438         struct nes_vnic *nesvnic = netdev_priv(netdev);
439         struct nes_device *nesdev = nesvnic->nesdev;
440         struct nes_hw_nic *nesnic = &nesvnic->nic;
441         struct nes_hw_nic_sq_wqe *nic_sqe;
442         struct tcphdr *tcph;
443         /* struct udphdr *udph; */
444 #define NES_MAX_TSO_FRAGS MAX_SKB_FRAGS
445         /* 64K segment plus overflow on each side */
446         dma_addr_t tso_bus_address[NES_MAX_TSO_FRAGS];
447         dma_addr_t bus_address;
448         u32 tso_frag_index;
449         u32 tso_frag_count;
450         u32 tso_wqe_length;
451         u32 curr_tcp_seq;
452         u32 wqe_count=1;
453         u32 send_rc;
454         struct iphdr *iph;
455         __le16 *wqe_fragment_length;
456         u32 nr_frags;
457         u32 original_first_length;
458         /* u64 *wqe_fragment_address; */
459         /* first fragment (0) is used by copy buffer */
460         u16 wqe_fragment_index=1;
461         u16 hoffset;
462         u16 nhoffset;
463         u16 wqes_needed;
464         u16 wqes_available;
465         u32 old_head;
466         u32 wqe_misc;
467
468         /*
469          * nes_debug(NES_DBG_NIC_TX, "%s Request to tx NIC packet length %u, headlen %u,"
470          *              " (%u frags), tso_size=%u\n",
471          *              netdev->name, skb->len, skb_headlen(skb),
472          *              skb_shinfo(skb)->nr_frags, skb_is_gso(skb));
473          */
474
475         if (!netif_carrier_ok(netdev))
476                 return NETDEV_TX_OK;
477
478         if (netif_queue_stopped(netdev))
479                 return NETDEV_TX_BUSY;
480
481         /* Check if SQ is full */
482         if ((((nesnic->sq_tail+(nesnic->sq_size*2))-nesnic->sq_head) & (nesnic->sq_size - 1)) == 1) {
483                 if (!netif_queue_stopped(netdev)) {
484                         netif_stop_queue(netdev);
485                         barrier();
486                         if ((((((volatile u16)nesnic->sq_tail)+(nesnic->sq_size*2))-nesnic->sq_head) & (nesnic->sq_size - 1)) != 1) {
487                                 netif_start_queue(netdev);
488                                 goto sq_no_longer_full;
489                         }
490                 }
491                 nesvnic->sq_full++;
492                 return NETDEV_TX_BUSY;
493         }
494
495 sq_no_longer_full:
496         nr_frags = skb_shinfo(skb)->nr_frags;
497         if (skb_headlen(skb) > NES_FIRST_FRAG_SIZE) {
498                 nr_frags++;
499         }
500         /* Check if too many fragments */
501         if (unlikely((nr_frags > 4))) {
502                 if (skb_is_gso(skb)) {
503                         nesvnic->segmented_tso_requests++;
504                         nesvnic->tso_requests++;
505                         old_head = nesnic->sq_head;
506                         /* Basically 4 fragments available per WQE with extended fragments */
507                         wqes_needed = nr_frags >> 2;
508                         wqes_needed += (nr_frags&3)?1:0;
509                         wqes_available = (((nesnic->sq_tail+nesnic->sq_size)-nesnic->sq_head) - 1) &
510                                         (nesnic->sq_size - 1);
511
512                         if (unlikely(wqes_needed > wqes_available)) {
513                                 if (!netif_queue_stopped(netdev)) {
514                                         netif_stop_queue(netdev);
515                                         barrier();
516                                         wqes_available = (((((volatile u16)nesnic->sq_tail)+nesnic->sq_size)-nesnic->sq_head) - 1) &
517                                                 (nesnic->sq_size - 1);
518                                         if (wqes_needed <= wqes_available) {
519                                                 netif_start_queue(netdev);
520                                                 goto tso_sq_no_longer_full;
521                                         }
522                                 }
523                                 nesvnic->sq_full++;
524                                 nes_debug(NES_DBG_NIC_TX, "%s: HNIC SQ full- TSO request has too many frags!\n",
525                                                 netdev->name);
526                                 return NETDEV_TX_BUSY;
527                         }
528 tso_sq_no_longer_full:
529                         /* Map all the buffers */
530                         for (tso_frag_count=0; tso_frag_count < skb_shinfo(skb)->nr_frags;
531                                         tso_frag_count++) {
532                                 tso_bus_address[tso_frag_count] = pci_map_page( nesdev->pcidev,
533                                                 skb_shinfo(skb)->frags[tso_frag_count].page,
534                                                 skb_shinfo(skb)->frags[tso_frag_count].page_offset,
535                                                 skb_shinfo(skb)->frags[tso_frag_count].size,
536                                                 PCI_DMA_TODEVICE);
537                         }
538
539                         tso_frag_index = 0;
540                         curr_tcp_seq = ntohl(tcp_hdr(skb)->seq);
541                         hoffset = skb_transport_header(skb) - skb->data;
542                         nhoffset = skb_network_header(skb) - skb->data;
543                         original_first_length = hoffset + ((((struct tcphdr *)skb_transport_header(skb))->doff)<<2);
544
545                         for (wqe_count=0; wqe_count<((u32)wqes_needed); wqe_count++) {
546                                 tso_wqe_length = 0;
547                                 nic_sqe = &nesnic->sq_vbase[nesnic->sq_head];
548                                 wqe_fragment_length =
549                                                 (__le16 *)&nic_sqe->wqe_words[NES_NIC_SQ_WQE_LENGTH_0_TAG_IDX];
550                                 /* setup the VLAN tag if present */
551                                 if (vlan_tx_tag_present(skb)) {
552                                         nes_debug(NES_DBG_NIC_TX, "%s: VLAN packet to send... VLAN = %08X\n",
553                                                         netdev->name, vlan_tx_tag_get(skb) );
554                                         wqe_misc = NES_NIC_SQ_WQE_TAGVALUE_ENABLE;
555                                         wqe_fragment_length[0] = (__force __le16) vlan_tx_tag_get(skb);
556                                 } else
557                                         wqe_misc = 0;
558
559                                 /* bump past the vlan tag */
560                                 wqe_fragment_length++;
561
562                                 /* Assumes header totally fits in allocated buffer and is in first fragment */
563                                 if (original_first_length > NES_FIRST_FRAG_SIZE) {
564                                         nes_debug(NES_DBG_NIC_TX, "ERROR: SKB header too big, headlen=%u, FIRST_FRAG_SIZE=%u\n",
565                                                         original_first_length, NES_FIRST_FRAG_SIZE);
566                                         nes_debug(NES_DBG_NIC_TX, "%s Request to tx NIC packet length %u, headlen %u,"
567                                                         " (%u frags), tso_size=%u\n",
568                                                         netdev->name,
569                                                         skb->len, skb_headlen(skb),
570                                                         skb_shinfo(skb)->nr_frags, skb_is_gso(skb));
571                                 }
572                                 memcpy(&nesnic->first_frag_vbase[nesnic->sq_head].buffer,
573                                                 skb->data, min(((unsigned int)NES_FIRST_FRAG_SIZE),
574                                                 original_first_length));
575                                 iph = (struct iphdr *)
576                                 (&nesnic->first_frag_vbase[nesnic->sq_head].buffer[nhoffset]);
577                                 tcph = (struct tcphdr *)
578                                 (&nesnic->first_frag_vbase[nesnic->sq_head].buffer[hoffset]);
579                                 if ((wqe_count+1)!=(u32)wqes_needed) {
580                                         tcph->fin = 0;
581                                         tcph->psh = 0;
582                                         tcph->rst = 0;
583                                         tcph->urg = 0;
584                                 }
585                                 if (wqe_count) {
586                                         tcph->syn = 0;
587                                 }
588                                 tcph->seq = htonl(curr_tcp_seq);
589                                 wqe_fragment_length[0] = cpu_to_le16(min(((unsigned int)NES_FIRST_FRAG_SIZE),
590                                                 original_first_length));
591
592                                 wqe_fragment_index = 1;
593                                 if ((wqe_count==0) && (skb_headlen(skb) > original_first_length)) {
594                                         set_bit(nesnic->sq_head, nesnic->first_frag_overflow);
595                                         bus_address = pci_map_single(nesdev->pcidev, skb->data + original_first_length,
596                                                         skb_headlen(skb) - original_first_length, PCI_DMA_TODEVICE);
597                                         wqe_fragment_length[wqe_fragment_index++] =
598                                                 cpu_to_le16(skb_headlen(skb) - original_first_length);
599                                         wqe_fragment_length[wqe_fragment_index] = 0;
600                                         set_wqe_64bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_FRAG1_LOW_IDX,
601                                                                         bus_address);
602                                         tso_wqe_length += skb_headlen(skb) -
603                                                         original_first_length;
604                                 }
605                                 while (wqe_fragment_index < 5) {
606                                         wqe_fragment_length[wqe_fragment_index] =
607                                                         cpu_to_le16(skb_shinfo(skb)->frags[tso_frag_index].size);
608                                         set_wqe_64bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_FRAG0_LOW_IDX+(2*wqe_fragment_index),
609                                                 (u64)tso_bus_address[tso_frag_index]);
610                                         wqe_fragment_index++;
611                                         tso_wqe_length += skb_shinfo(skb)->frags[tso_frag_index++].size;
612                                         if (wqe_fragment_index < 5)
613                                                 wqe_fragment_length[wqe_fragment_index] = 0;
614                                         if (tso_frag_index == tso_frag_count)
615                                                 break;
616                                 }
617                                 if ((wqe_count+1) == (u32)wqes_needed) {
618                                         nesnic->tx_skb[nesnic->sq_head] = skb;
619                                 } else {
620                                         nesnic->tx_skb[nesnic->sq_head] = NULL;
621                                 }
622                                 wqe_misc |= NES_NIC_SQ_WQE_COMPLETION | (u16)skb_is_gso(skb);
623                                 if ((tso_wqe_length + original_first_length) > skb_is_gso(skb)) {
624                                         wqe_misc |= NES_NIC_SQ_WQE_LSO_ENABLE;
625                                 } else {
626                                         iph->tot_len = htons(tso_wqe_length + original_first_length - nhoffset);
627                                 }
628
629                                 set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_MISC_IDX,
630                                                  wqe_misc);
631                                 set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_LSO_INFO_IDX,
632                                                 ((u32)tcph->doff) | (((u32)hoffset) << 4));
633
634                                 set_wqe_32bit_value(nic_sqe->wqe_words, NES_NIC_SQ_WQE_TOTAL_LENGTH_IDX,
635                                                 tso_wqe_length + original_first_length);
636                                 curr_tcp_seq += tso_wqe_length;
637                                 nesnic->sq_head++;
638                                 nesnic->sq_head &= nesnic->sq_size-1;
639                         }
640                 } else {
641                         nesvnic->linearized_skbs++;
642                         hoffset = skb_transport_header(skb) - skb->data;
643                         nhoffset = skb_network_header(skb) - skb->data;
644                         skb_linearize(skb);
645                         skb_set_transport_header(skb, hoffset);
646                         skb_set_network_header(skb, nhoffset);
647                         send_rc = nes_nic_send(skb, netdev);
648                         if (send_rc != NETDEV_TX_OK)
649                                 return NETDEV_TX_OK;
650                 }
651         } else {
652                 send_rc = nes_nic_send(skb, netdev);
653                 if (send_rc != NETDEV_TX_OK)
654                         return NETDEV_TX_OK;
655         }
656
657         barrier();
658
659         if (wqe_count)
660                 nes_write32(nesdev->regs+NES_WQE_ALLOC,
661                                 (wqe_count << 24) | (1 << 23) | nesvnic->nic.qp_id);
662
663         netdev->trans_start = jiffies;
664
665         return NETDEV_TX_OK;
666 }
667
668
669 /**
670  * nes_netdev_get_stats
671  */
672 static struct net_device_stats *nes_netdev_get_stats(struct net_device *netdev)
673 {
674         struct nes_vnic *nesvnic = netdev_priv(netdev);
675         struct nes_device *nesdev = nesvnic->nesdev;
676         u64 u64temp;
677         u32 u32temp;
678
679         u32temp = nes_read_indexed(nesdev,
680                         NES_IDX_ENDNODE0_NSTAT_RX_DISCARD + (nesvnic->nic_index*0x200));
681         nesvnic->netstats.rx_dropped += u32temp;
682         nesvnic->endnode_nstat_rx_discard += u32temp;
683
684         u64temp = (u64)nes_read_indexed(nesdev,
685                         NES_IDX_ENDNODE0_NSTAT_RX_OCTETS_LO + (nesvnic->nic_index*0x200));
686         u64temp += ((u64)nes_read_indexed(nesdev,
687                         NES_IDX_ENDNODE0_NSTAT_RX_OCTETS_HI + (nesvnic->nic_index*0x200))) << 32;
688
689         nesvnic->endnode_nstat_rx_octets += u64temp;
690         nesvnic->netstats.rx_bytes += u64temp;
691
692         u64temp = (u64)nes_read_indexed(nesdev,
693                         NES_IDX_ENDNODE0_NSTAT_RX_FRAMES_LO + (nesvnic->nic_index*0x200));
694         u64temp += ((u64)nes_read_indexed(nesdev,
695                         NES_IDX_ENDNODE0_NSTAT_RX_FRAMES_HI + (nesvnic->nic_index*0x200))) << 32;
696
697         nesvnic->endnode_nstat_rx_frames += u64temp;
698         nesvnic->netstats.rx_packets += u64temp;
699
700         u64temp = (u64)nes_read_indexed(nesdev,
701                         NES_IDX_ENDNODE0_NSTAT_TX_OCTETS_LO + (nesvnic->nic_index*0x200));
702         u64temp += ((u64)nes_read_indexed(nesdev,
703                         NES_IDX_ENDNODE0_NSTAT_TX_OCTETS_HI + (nesvnic->nic_index*0x200))) << 32;
704
705         nesvnic->endnode_nstat_tx_octets += u64temp;
706         nesvnic->netstats.tx_bytes += u64temp;
707
708         u64temp = (u64)nes_read_indexed(nesdev,
709                         NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_LO + (nesvnic->nic_index*0x200));
710         u64temp += ((u64)nes_read_indexed(nesdev,
711                         NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_HI + (nesvnic->nic_index*0x200))) << 32;
712
713         nesvnic->endnode_nstat_tx_frames += u64temp;
714         nesvnic->netstats.tx_packets += u64temp;
715
716         u32temp = nes_read_indexed(nesdev,
717                         NES_IDX_MAC_RX_SHORT_FRAMES + (nesvnic->nesdev->mac_index*0x200));
718         nesvnic->netstats.rx_dropped += u32temp;
719         nesvnic->nesdev->mac_rx_errors += u32temp;
720         nesvnic->nesdev->mac_rx_short_frames += u32temp;
721
722         u32temp = nes_read_indexed(nesdev,
723                         NES_IDX_MAC_RX_OVERSIZED_FRAMES + (nesvnic->nesdev->mac_index*0x200));
724         nesvnic->netstats.rx_dropped += u32temp;
725         nesvnic->nesdev->mac_rx_errors += u32temp;
726         nesvnic->nesdev->mac_rx_oversized_frames += u32temp;
727
728         u32temp = nes_read_indexed(nesdev,
729                         NES_IDX_MAC_RX_JABBER_FRAMES + (nesvnic->nesdev->mac_index*0x200));
730         nesvnic->netstats.rx_dropped += u32temp;
731         nesvnic->nesdev->mac_rx_errors += u32temp;
732         nesvnic->nesdev->mac_rx_jabber_frames += u32temp;
733
734         u32temp = nes_read_indexed(nesdev,
735                         NES_IDX_MAC_RX_SYMBOL_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
736         nesvnic->netstats.rx_dropped += u32temp;
737         nesvnic->nesdev->mac_rx_errors += u32temp;
738         nesvnic->nesdev->mac_rx_symbol_err_frames += u32temp;
739
740         u32temp = nes_read_indexed(nesdev,
741                         NES_IDX_MAC_RX_LENGTH_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
742         nesvnic->netstats.rx_length_errors += u32temp;
743         nesvnic->nesdev->mac_rx_errors += u32temp;
744
745         u32temp = nes_read_indexed(nesdev,
746                         NES_IDX_MAC_RX_CRC_ERR_FRAMES + (nesvnic->nesdev->mac_index*0x200));
747         nesvnic->nesdev->mac_rx_errors += u32temp;
748         nesvnic->nesdev->mac_rx_crc_errors += u32temp;
749         nesvnic->netstats.rx_crc_errors += u32temp;
750
751         u32temp = nes_read_indexed(nesdev,
752                         NES_IDX_MAC_TX_ERRORS + (nesvnic->nesdev->mac_index*0x200));
753         nesvnic->nesdev->mac_tx_errors += u32temp;
754         nesvnic->netstats.tx_errors += u32temp;
755
756         return &nesvnic->netstats;
757 }
758
759
760 /**
761  * nes_netdev_tx_timeout
762  */
763 static void nes_netdev_tx_timeout(struct net_device *netdev)
764 {
765         struct nes_vnic *nesvnic = netdev_priv(netdev);
766
767         if (netif_msg_timer(nesvnic))
768                 nes_debug(NES_DBG_NIC_TX, "%s: tx timeout\n", netdev->name);
769 }
770
771
772 /**
773  * nes_netdev_set_mac_address
774  */
775 static int nes_netdev_set_mac_address(struct net_device *netdev, void *p)
776 {
777         struct nes_vnic *nesvnic = netdev_priv(netdev);
778         struct nes_device *nesdev = nesvnic->nesdev;
779         struct sockaddr *mac_addr = p;
780         int i;
781         u32 macaddr_low;
782         u16 macaddr_high;
783
784         if (!is_valid_ether_addr(mac_addr->sa_data))
785                 return -EADDRNOTAVAIL;
786
787         memcpy(netdev->dev_addr, mac_addr->sa_data, netdev->addr_len);
788         printk(PFX "%s: Address length = %d, Address = %pM\n",
789                __func__, netdev->addr_len, mac_addr->sa_data);
790         macaddr_high  = ((u16)netdev->dev_addr[0]) << 8;
791         macaddr_high += (u16)netdev->dev_addr[1];
792         macaddr_low   = ((u32)netdev->dev_addr[2]) << 24;
793         macaddr_low  += ((u32)netdev->dev_addr[3]) << 16;
794         macaddr_low  += ((u32)netdev->dev_addr[4]) << 8;
795         macaddr_low  += (u32)netdev->dev_addr[5];
796
797         for (i = 0; i < NES_MAX_PORT_COUNT; i++) {
798                 if (nesvnic->qp_nic_index[i] == 0xf) {
799                         break;
800                 }
801                 nes_write_indexed(nesdev,
802                                 NES_IDX_PERFECT_FILTER_LOW + (nesvnic->qp_nic_index[i] * 8),
803                                 macaddr_low);
804                 nes_write_indexed(nesdev,
805                                 NES_IDX_PERFECT_FILTER_HIGH + (nesvnic->qp_nic_index[i] * 8),
806                                 (u32)macaddr_high | NES_MAC_ADDR_VALID |
807                                 ((((u32)nesvnic->nic_index) << 16)));
808         }
809         return 0;
810 }
811
812
813 static void set_allmulti(struct nes_device *nesdev, u32 nic_active_bit)
814 {
815         u32 nic_active;
816
817         nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL);
818         nic_active |= nic_active_bit;
819         nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL, nic_active);
820         nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);
821         nic_active &= ~nic_active_bit;
822         nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
823 }
824
825 #define get_addr(addrs, index) ((addrs) + (index) * ETH_ALEN)
826
827 /**
828  * nes_netdev_set_multicast_list
829  */
830 static void nes_netdev_set_multicast_list(struct net_device *netdev)
831 {
832         struct nes_vnic *nesvnic = netdev_priv(netdev);
833         struct nes_device *nesdev = nesvnic->nesdev;
834         struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter;
835         u32 nic_active_bit;
836         u32 nic_active;
837         u32 perfect_filter_register_address;
838         u32 macaddr_low;
839         u16 macaddr_high;
840         u8 mc_all_on = 0;
841         u8 mc_index;
842         int mc_nic_index = -1;
843         u8 pft_entries_preallocated = max(nesadapter->adapter_fcn_count *
844                                         nics_per_function, 4);
845         u8 max_pft_entries_avaiable = NES_PFT_SIZE - pft_entries_preallocated;
846         unsigned long flags;
847         int mc_count = netdev_mc_count(netdev);
848
849         spin_lock_irqsave(&nesadapter->resource_lock, flags);
850         nic_active_bit = 1 << nesvnic->nic_index;
851
852         if (netdev->flags & IFF_PROMISC) {
853                 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL);
854                 nic_active |= nic_active_bit;
855                 nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL, nic_active);
856                 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);
857                 nic_active |= nic_active_bit;
858                 nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
859                 mc_all_on = 1;
860         } else if ((netdev->flags & IFF_ALLMULTI) ||
861                            (nesvnic->nic_index > 3)) {
862                 set_allmulti(nesdev, nic_active_bit);
863                 mc_all_on = 1;
864         } else {
865                 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL);
866                 nic_active &= ~nic_active_bit;
867                 nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL, nic_active);
868                 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);
869                 nic_active &= ~nic_active_bit;
870                 nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
871         }
872
873         nes_debug(NES_DBG_NIC_RX, "Number of MC entries = %d, Promiscous = %d, All Multicast = %d.\n",
874                   mc_count, !!(netdev->flags & IFF_PROMISC),
875                   !!(netdev->flags & IFF_ALLMULTI));
876         if (!mc_all_on) {
877                 char *addrs;
878                 int i;
879                 struct dev_mc_list *mcaddr;
880
881                 addrs = kmalloc(ETH_ALEN * mc_count, GFP_ATOMIC);
882                 if (!addrs) {
883                         set_allmulti(nesdev, nic_active_bit);
884                         goto unlock;
885                 }
886                 i = 0;
887                 netdev_for_each_mc_addr(mcaddr, netdev)
888                         memcpy(get_addr(addrs, i++),
889                                mcaddr->dmi_addr, ETH_ALEN);
890
891                 perfect_filter_register_address = NES_IDX_PERFECT_FILTER_LOW +
892                                                 pft_entries_preallocated * 0x8;
893                 for (i = 0, mc_index = 0; mc_index < max_pft_entries_avaiable;
894                      mc_index++) {
895                         while (i < mc_count && nesvnic->mcrq_mcast_filter &&
896                         ((mc_nic_index = nesvnic->mcrq_mcast_filter(nesvnic,
897                                         get_addr(addrs, i++))) == 0));
898                         if (mc_nic_index < 0)
899                                 mc_nic_index = nesvnic->nic_index;
900                         while (nesadapter->pft_mcast_map[mc_index] < 16 &&
901                                 nesadapter->pft_mcast_map[mc_index] !=
902                                         nesvnic->nic_index &&
903                                         mc_index < max_pft_entries_avaiable) {
904                                                 nes_debug(NES_DBG_NIC_RX,
905                                         "mc_index=%d skipping nic_index=%d,\
906                                         used for=%d \n", mc_index,
907                                         nesvnic->nic_index,
908                                         nesadapter->pft_mcast_map[mc_index]);
909                                 mc_index++;
910                         }
911                         if (mc_index >= max_pft_entries_avaiable)
912                                 break;
913                         if (i < mc_count) {
914                                 char *addr = get_addr(addrs, i++);
915
916                                 nes_debug(NES_DBG_NIC_RX, "Assigning MC Address %pM to register 0x%04X nic_idx=%d\n",
917                                           addr,
918                                           perfect_filter_register_address+(mc_index * 8),
919                                           mc_nic_index);
920                                 macaddr_high  = ((u16) addr[0]) << 8;
921                                 macaddr_high += (u16) addr[1];
922                                 macaddr_low   = ((u32) addr[2]) << 24;
923                                 macaddr_low  += ((u32) addr[3]) << 16;
924                                 macaddr_low  += ((u32) addr[4]) << 8;
925                                 macaddr_low  += (u32) addr[5];
926                                 nes_write_indexed(nesdev,
927                                                 perfect_filter_register_address+(mc_index * 8),
928                                                 macaddr_low);
929                                 nes_write_indexed(nesdev,
930                                                 perfect_filter_register_address+4+(mc_index * 8),
931                                                 (u32)macaddr_high | NES_MAC_ADDR_VALID |
932                                                 ((((u32)(1<<mc_nic_index)) << 16)));
933                                 nesadapter->pft_mcast_map[mc_index] =
934                                                         nesvnic->nic_index;
935                         } else {
936                                 nes_debug(NES_DBG_NIC_RX, "Clearing MC Address at register 0x%04X\n",
937                                                   perfect_filter_register_address+(mc_index * 8));
938                                 nes_write_indexed(nesdev,
939                                                 perfect_filter_register_address+4+(mc_index * 8),
940                                                 0);
941                                 nesadapter->pft_mcast_map[mc_index] = 255;
942                         }
943                 }
944                 kfree(addrs);
945                 /* PFT is not large enough */
946                 if (i < mc_count)
947                         set_allmulti(nesdev, nic_active_bit);
948         }
949
950 unlock:
951         spin_unlock_irqrestore(&nesadapter->resource_lock, flags);
952 }
953
954
955 /**
956  * nes_netdev_change_mtu
957  */
958 static int nes_netdev_change_mtu(struct net_device *netdev, int new_mtu)
959 {
960         struct nes_vnic *nesvnic = netdev_priv(netdev);
961         struct nes_device *nesdev = nesvnic->nesdev;
962         int ret = 0;
963         u8 jumbomode = 0;
964         u32 nic_active;
965         u32 nic_active_bit;
966         u32 uc_all_active;
967         u32 mc_all_active;
968
969         if ((new_mtu < ETH_ZLEN) || (new_mtu > max_mtu))
970                 return -EINVAL;
971
972         netdev->mtu = new_mtu;
973         nesvnic->max_frame_size = new_mtu + VLAN_ETH_HLEN;
974
975         if (netdev->mtu > 1500) {
976                 jumbomode=1;
977         }
978         nes_nic_init_timer_defaults(nesdev, jumbomode);
979
980         if (netif_running(netdev)) {
981                 nic_active_bit = 1 << nesvnic->nic_index;
982                 mc_all_active = nes_read_indexed(nesdev,
983                                 NES_IDX_NIC_MULTICAST_ALL) & nic_active_bit;
984                 uc_all_active = nes_read_indexed(nesdev,
985                                 NES_IDX_NIC_UNICAST_ALL)  & nic_active_bit;
986
987                 nes_netdev_stop(netdev);
988                 nes_netdev_open(netdev);
989
990                 nic_active = nes_read_indexed(nesdev,
991                                         NES_IDX_NIC_MULTICAST_ALL);
992                 nic_active |= mc_all_active;
993                 nes_write_indexed(nesdev, NES_IDX_NIC_MULTICAST_ALL,
994                                                         nic_active);
995
996                 nic_active = nes_read_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL);
997                 nic_active |= uc_all_active;
998                 nes_write_indexed(nesdev, NES_IDX_NIC_UNICAST_ALL, nic_active);
999         }
1000
1001         return ret;
1002 }
1003
1004 static const char nes_ethtool_stringset[][ETH_GSTRING_LEN] = {
1005         "Link Change Interrupts",
1006         "Linearized SKBs",
1007         "T/GSO Requests",
1008         "Pause Frames Sent",
1009         "Pause Frames Received",
1010         "Internal Routing Errors",
1011         "SQ SW Dropped SKBs",
1012         "SQ Full",
1013         "Segmented TSO Requests",
1014         "Rx Symbol Errors",
1015         "Rx Jabber Errors",
1016         "Rx Oversized Frames",
1017         "Rx Short Frames",
1018         "Endnode Rx Discards",
1019         "Endnode Rx Octets",
1020         "Endnode Rx Frames",
1021         "Endnode Tx Octets",
1022         "Endnode Tx Frames",
1023         "mh detected",
1024         "mh pauses",
1025         "Retransmission Count",
1026         "CM Connects",
1027         "CM Accepts",
1028         "Disconnects",
1029         "Connected Events",
1030         "Connect Requests",
1031         "CM Rejects",
1032         "ModifyQP Timeouts",
1033         "CreateQPs",
1034         "SW DestroyQPs",
1035         "DestroyQPs",
1036         "CM Closes",
1037         "CM Packets Sent",
1038         "CM Packets Bounced",
1039         "CM Packets Created",
1040         "CM Packets Rcvd",
1041         "CM Packets Dropped",
1042         "CM Packets Retrans",
1043         "CM Listens Created",
1044         "CM Listens Destroyed",
1045         "CM Backlog Drops",
1046         "CM Loopbacks",
1047         "CM Nodes Created",
1048         "CM Nodes Destroyed",
1049         "CM Accel Drops",
1050         "CM Resets Received",
1051         "Timer Inits",
1052         "CQ Depth 1",
1053         "CQ Depth 4",
1054         "CQ Depth 16",
1055         "CQ Depth 24",
1056         "CQ Depth 32",
1057         "CQ Depth 128",
1058         "CQ Depth 256",
1059         "LRO aggregated",
1060         "LRO flushed",
1061         "LRO no_desc",
1062 };
1063
1064 #define NES_ETHTOOL_STAT_COUNT  ARRAY_SIZE(nes_ethtool_stringset)
1065
1066 /**
1067  * nes_netdev_get_rx_csum
1068  */
1069 static u32 nes_netdev_get_rx_csum (struct net_device *netdev)
1070 {
1071         struct nes_vnic *nesvnic = netdev_priv(netdev);
1072
1073         if (nesvnic->rx_checksum_disabled)
1074                 return 0;
1075         else
1076                 return 1;
1077 }
1078
1079
1080 /**
1081  * nes_netdev_set_rc_csum
1082  */
1083 static int nes_netdev_set_rx_csum(struct net_device *netdev, u32 enable)
1084 {
1085         struct nes_vnic *nesvnic = netdev_priv(netdev);
1086
1087         if (enable)
1088                 nesvnic->rx_checksum_disabled = 0;
1089         else
1090                 nesvnic->rx_checksum_disabled = 1;
1091         return 0;
1092 }
1093
1094
1095 /**
1096  * nes_netdev_get_sset_count
1097  */
1098 static int nes_netdev_get_sset_count(struct net_device *netdev, int stringset)
1099 {
1100         if (stringset == ETH_SS_STATS)
1101                 return NES_ETHTOOL_STAT_COUNT;
1102         else
1103                 return -EINVAL;
1104 }
1105
1106
1107 /**
1108  * nes_netdev_get_strings
1109  */
1110 static void nes_netdev_get_strings(struct net_device *netdev, u32 stringset,
1111                 u8 *ethtool_strings)
1112 {
1113         if (stringset == ETH_SS_STATS)
1114                 memcpy(ethtool_strings,
1115                                 &nes_ethtool_stringset,
1116                                 sizeof(nes_ethtool_stringset));
1117 }
1118
1119
1120 /**
1121  * nes_netdev_get_ethtool_stats
1122  */
1123 static void nes_netdev_get_ethtool_stats(struct net_device *netdev,
1124                 struct ethtool_stats *target_ethtool_stats, u64 *target_stat_values)
1125 {
1126         u64 u64temp;
1127         struct nes_vnic *nesvnic = netdev_priv(netdev);
1128         struct nes_device *nesdev = nesvnic->nesdev;
1129         u32 nic_count;
1130         u32 u32temp;
1131         u32 index = 0;
1132
1133         target_ethtool_stats->n_stats = NES_ETHTOOL_STAT_COUNT;
1134         target_stat_values[index] = nesvnic->nesdev->link_status_interrupts;
1135         target_stat_values[++index] = nesvnic->linearized_skbs;
1136         target_stat_values[++index] = nesvnic->tso_requests;
1137
1138         u32temp = nes_read_indexed(nesdev,
1139                         NES_IDX_MAC_TX_PAUSE_FRAMES + (nesvnic->nesdev->mac_index*0x200));
1140         nesvnic->nesdev->mac_pause_frames_sent += u32temp;
1141         target_stat_values[++index] = nesvnic->nesdev->mac_pause_frames_sent;
1142
1143         u32temp = nes_read_indexed(nesdev,
1144                         NES_IDX_MAC_RX_PAUSE_FRAMES + (nesvnic->nesdev->mac_index*0x200));
1145         nesvnic->nesdev->mac_pause_frames_received += u32temp;
1146
1147         u32temp = nes_read_indexed(nesdev,
1148                         NES_IDX_PORT_RX_DISCARDS + (nesvnic->nesdev->mac_index*0x40));
1149         nesvnic->nesdev->port_rx_discards += u32temp;
1150         nesvnic->netstats.rx_dropped += u32temp;
1151
1152         u32temp = nes_read_indexed(nesdev,
1153                         NES_IDX_PORT_TX_DISCARDS + (nesvnic->nesdev->mac_index*0x40));
1154         nesvnic->nesdev->port_tx_discards += u32temp;
1155         nesvnic->netstats.tx_dropped += u32temp;
1156
1157         for (nic_count = 0; nic_count < NES_MAX_PORT_COUNT; nic_count++) {
1158                 if (nesvnic->qp_nic_index[nic_count] == 0xf)
1159                         break;
1160
1161                 u32temp = nes_read_indexed(nesdev,
1162                                 NES_IDX_ENDNODE0_NSTAT_RX_DISCARD +
1163                                 (nesvnic->qp_nic_index[nic_count]*0x200));
1164                 nesvnic->netstats.rx_dropped += u32temp;
1165                 nesvnic->endnode_nstat_rx_discard += u32temp;
1166
1167                 u64temp = (u64)nes_read_indexed(nesdev,
1168                                 NES_IDX_ENDNODE0_NSTAT_RX_OCTETS_LO +
1169                                 (nesvnic->qp_nic_index[nic_count]*0x200));
1170                 u64temp += ((u64)nes_read_indexed(nesdev,
1171                                 NES_IDX_ENDNODE0_NSTAT_RX_OCTETS_HI +
1172                                 (nesvnic->qp_nic_index[nic_count]*0x200))) << 32;
1173
1174                 nesvnic->endnode_nstat_rx_octets += u64temp;
1175                 nesvnic->netstats.rx_bytes += u64temp;
1176
1177                 u64temp = (u64)nes_read_indexed(nesdev,
1178                                 NES_IDX_ENDNODE0_NSTAT_RX_FRAMES_LO +
1179                                 (nesvnic->qp_nic_index[nic_count]*0x200));
1180                 u64temp += ((u64)nes_read_indexed(nesdev,
1181                                 NES_IDX_ENDNODE0_NSTAT_RX_FRAMES_HI +
1182                                 (nesvnic->qp_nic_index[nic_count]*0x200))) << 32;
1183
1184                 nesvnic->endnode_nstat_rx_frames += u64temp;
1185                 nesvnic->netstats.rx_packets += u64temp;
1186
1187                 u64temp = (u64)nes_read_indexed(nesdev,
1188                                 NES_IDX_ENDNODE0_NSTAT_TX_OCTETS_LO +
1189                                 (nesvnic->qp_nic_index[nic_count]*0x200));
1190                 u64temp += ((u64)nes_read_indexed(nesdev,
1191                                 NES_IDX_ENDNODE0_NSTAT_TX_OCTETS_HI +
1192                                 (nesvnic->qp_nic_index[nic_count]*0x200))) << 32;
1193
1194                 nesvnic->endnode_nstat_tx_octets += u64temp;
1195                 nesvnic->netstats.tx_bytes += u64temp;
1196
1197                 u64temp = (u64)nes_read_indexed(nesdev,
1198                                 NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_LO +
1199                                 (nesvnic->qp_nic_index[nic_count]*0x200));
1200                 u64temp += ((u64)nes_read_indexed(nesdev,
1201                                 NES_IDX_ENDNODE0_NSTAT_TX_FRAMES_HI +
1202                                 (nesvnic->qp_nic_index[nic_count]*0x200))) << 32;
1203
1204                 nesvnic->endnode_nstat_tx_frames += u64temp;
1205                 nesvnic->netstats.tx_packets += u64temp;
1206
1207                 u32temp = nes_read_indexed(nesdev,
1208                                 NES_IDX_IPV4_TCP_REXMITS + (nesvnic->qp_nic_index[nic_count]*0x200));
1209                 nesvnic->endnode_ipv4_tcp_retransmits += u32temp;
1210         }
1211
1212         target_stat_values[++index] = nesvnic->nesdev->mac_pause_frames_received;
1213         target_stat_values[++index] = nesdev->nesadapter->nic_rx_eth_route_err;
1214         target_stat_values[++index] = nesvnic->tx_sw_dropped;
1215         target_stat_values[++index] = nesvnic->sq_full;
1216         target_stat_values[++index] = nesvnic->segmented_tso_requests;
1217         target_stat_values[++index] = nesvnic->nesdev->mac_rx_symbol_err_frames;
1218         target_stat_values[++index] = nesvnic->nesdev->mac_rx_jabber_frames;
1219         target_stat_values[++index] = nesvnic->nesdev->mac_rx_oversized_frames;
1220         target_stat_values[++index] = nesvnic->nesdev->mac_rx_short_frames;
1221         target_stat_values[++index] = nesvnic->endnode_nstat_rx_discard;
1222         target_stat_values[++index] = nesvnic->endnode_nstat_rx_octets;
1223         target_stat_values[++index] = nesvnic->endnode_nstat_rx_frames;
1224         target_stat_values[++index] = nesvnic->endnode_nstat_tx_octets;
1225         target_stat_values[++index] = nesvnic->endnode_nstat_tx_frames;
1226         target_stat_values[++index] = mh_detected;
1227         target_stat_values[++index] = mh_pauses_sent;
1228         target_stat_values[++index] = nesvnic->endnode_ipv4_tcp_retransmits;
1229         target_stat_values[++index] = atomic_read(&cm_connects);
1230         target_stat_values[++index] = atomic_read(&cm_accepts);
1231         target_stat_values[++index] = atomic_read(&cm_disconnects);
1232         target_stat_values[++index] = atomic_read(&cm_connecteds);
1233         target_stat_values[++index] = atomic_read(&cm_connect_reqs);
1234         target_stat_values[++index] = atomic_read(&cm_rejects);
1235         target_stat_values[++index] = atomic_read(&mod_qp_timouts);
1236         target_stat_values[++index] = atomic_read(&qps_created);
1237         target_stat_values[++index] = atomic_read(&sw_qps_destroyed);
1238         target_stat_values[++index] = atomic_read(&qps_destroyed);
1239         target_stat_values[++index] = atomic_read(&cm_closes);
1240         target_stat_values[++index] = cm_packets_sent;
1241         target_stat_values[++index] = cm_packets_bounced;
1242         target_stat_values[++index] = cm_packets_created;
1243         target_stat_values[++index] = cm_packets_received;
1244         target_stat_values[++index] = cm_packets_dropped;
1245         target_stat_values[++index] = cm_packets_retrans;
1246         target_stat_values[++index] = atomic_read(&cm_listens_created);
1247         target_stat_values[++index] = atomic_read(&cm_listens_destroyed);
1248         target_stat_values[++index] = cm_backlog_drops;
1249         target_stat_values[++index] = atomic_read(&cm_loopbacks);
1250         target_stat_values[++index] = atomic_read(&cm_nodes_created);
1251         target_stat_values[++index] = atomic_read(&cm_nodes_destroyed);
1252         target_stat_values[++index] = atomic_read(&cm_accel_dropped_pkts);
1253         target_stat_values[++index] = atomic_read(&cm_resets_recvd);
1254         target_stat_values[++index] = int_mod_timer_init;
1255         target_stat_values[++index] = int_mod_cq_depth_1;
1256         target_stat_values[++index] = int_mod_cq_depth_4;
1257         target_stat_values[++index] = int_mod_cq_depth_16;
1258         target_stat_values[++index] = int_mod_cq_depth_24;
1259         target_stat_values[++index] = int_mod_cq_depth_32;
1260         target_stat_values[++index] = int_mod_cq_depth_128;
1261         target_stat_values[++index] = int_mod_cq_depth_256;
1262         target_stat_values[++index] = nesvnic->lro_mgr.stats.aggregated;
1263         target_stat_values[++index] = nesvnic->lro_mgr.stats.flushed;
1264         target_stat_values[++index] = nesvnic->lro_mgr.stats.no_desc;
1265
1266 }
1267
1268
1269 /**
1270  * nes_netdev_get_drvinfo
1271  */
1272 static void nes_netdev_get_drvinfo(struct net_device *netdev,
1273                 struct ethtool_drvinfo *drvinfo)
1274 {
1275         struct nes_vnic *nesvnic = netdev_priv(netdev);
1276         struct nes_adapter *nesadapter = nesvnic->nesdev->nesadapter;
1277
1278         strcpy(drvinfo->driver, DRV_NAME);
1279         strcpy(drvinfo->bus_info, pci_name(nesvnic->nesdev->pcidev));
1280         sprintf(drvinfo->fw_version, "%u.%u", nesadapter->firmware_version>>16,
1281                                 nesadapter->firmware_version & 0x000000ff);
1282         strcpy(drvinfo->version, DRV_VERSION);
1283         drvinfo->testinfo_len = 0;
1284         drvinfo->eedump_len = 0;
1285         drvinfo->regdump_len = 0;
1286 }
1287
1288
1289 /**
1290  * nes_netdev_set_coalesce
1291  */
1292 static int nes_netdev_set_coalesce(struct net_device *netdev,
1293                 struct ethtool_coalesce *et_coalesce)
1294 {
1295         struct nes_vnic *nesvnic = netdev_priv(netdev);
1296         struct nes_device *nesdev = nesvnic->nesdev;
1297         struct nes_adapter *nesadapter = nesdev->nesadapter;
1298         struct nes_hw_tune_timer *shared_timer = &nesadapter->tune_timer;
1299         unsigned long flags;
1300
1301         spin_lock_irqsave(&nesadapter->periodic_timer_lock, flags);
1302         if (et_coalesce->rx_max_coalesced_frames_low) {
1303                 shared_timer->threshold_low = et_coalesce->rx_max_coalesced_frames_low;
1304         }
1305         if (et_coalesce->rx_max_coalesced_frames_irq) {
1306                 shared_timer->threshold_target = et_coalesce->rx_max_coalesced_frames_irq;
1307         }
1308         if (et_coalesce->rx_max_coalesced_frames_high) {
1309                 shared_timer->threshold_high = et_coalesce->rx_max_coalesced_frames_high;
1310         }
1311         if (et_coalesce->rx_coalesce_usecs_low) {
1312                 shared_timer->timer_in_use_min = et_coalesce->rx_coalesce_usecs_low;
1313         }
1314         if (et_coalesce->rx_coalesce_usecs_high) {
1315                 shared_timer->timer_in_use_max = et_coalesce->rx_coalesce_usecs_high;
1316         }
1317         spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
1318
1319         /* using this to drive total interrupt moderation */
1320         nesadapter->et_rx_coalesce_usecs_irq = et_coalesce->rx_coalesce_usecs_irq;
1321         if (et_coalesce->use_adaptive_rx_coalesce) {
1322                 nesadapter->et_use_adaptive_rx_coalesce = 1;
1323                 nesadapter->timer_int_limit = NES_TIMER_INT_LIMIT_DYNAMIC;
1324                 nesadapter->et_rx_coalesce_usecs_irq = 0;
1325                 if (et_coalesce->pkt_rate_low) {
1326                         nesadapter->et_pkt_rate_low = et_coalesce->pkt_rate_low;
1327                 }
1328         } else {
1329                 nesadapter->et_use_adaptive_rx_coalesce = 0;
1330                 nesadapter->timer_int_limit = NES_TIMER_INT_LIMIT;
1331                 if (nesadapter->et_rx_coalesce_usecs_irq) {
1332                         nes_write32(nesdev->regs+NES_PERIODIC_CONTROL,
1333                                         0x80000000 | ((u32)(nesadapter->et_rx_coalesce_usecs_irq*8)));
1334                 }
1335         }
1336         return 0;
1337 }
1338
1339
1340 /**
1341  * nes_netdev_get_coalesce
1342  */
1343 static int nes_netdev_get_coalesce(struct net_device *netdev,
1344                 struct ethtool_coalesce *et_coalesce)
1345 {
1346         struct nes_vnic *nesvnic = netdev_priv(netdev);
1347         struct nes_device *nesdev = nesvnic->nesdev;
1348         struct nes_adapter *nesadapter = nesdev->nesadapter;
1349         struct ethtool_coalesce temp_et_coalesce;
1350         struct nes_hw_tune_timer *shared_timer = &nesadapter->tune_timer;
1351         unsigned long flags;
1352
1353         memset(&temp_et_coalesce, 0, sizeof(temp_et_coalesce));
1354         temp_et_coalesce.rx_coalesce_usecs_irq    = nesadapter->et_rx_coalesce_usecs_irq;
1355         temp_et_coalesce.use_adaptive_rx_coalesce = nesadapter->et_use_adaptive_rx_coalesce;
1356         temp_et_coalesce.rate_sample_interval     = nesadapter->et_rate_sample_interval;
1357         temp_et_coalesce.pkt_rate_low = nesadapter->et_pkt_rate_low;
1358         spin_lock_irqsave(&nesadapter->periodic_timer_lock,     flags);
1359         temp_et_coalesce.rx_max_coalesced_frames_low  = shared_timer->threshold_low;
1360         temp_et_coalesce.rx_max_coalesced_frames_irq  = shared_timer->threshold_target;
1361         temp_et_coalesce.rx_max_coalesced_frames_high = shared_timer->threshold_high;
1362         temp_et_coalesce.rx_coalesce_usecs_low  = shared_timer->timer_in_use_min;
1363         temp_et_coalesce.rx_coalesce_usecs_high = shared_timer->timer_in_use_max;
1364         if (nesadapter->et_use_adaptive_rx_coalesce) {
1365                 temp_et_coalesce.rx_coalesce_usecs_irq = shared_timer->timer_in_use;
1366         }
1367         spin_unlock_irqrestore(&nesadapter->periodic_timer_lock, flags);
1368         memcpy(et_coalesce, &temp_et_coalesce, sizeof(*et_coalesce));
1369         return 0;
1370 }
1371
1372
1373 /**
1374  * nes_netdev_get_pauseparam
1375  */
1376 static void nes_netdev_get_pauseparam(struct net_device *netdev,
1377                 struct ethtool_pauseparam *et_pauseparam)
1378 {
1379         struct nes_vnic *nesvnic = netdev_priv(netdev);
1380
1381         et_pauseparam->autoneg = 0;
1382         et_pauseparam->rx_pause = (nesvnic->nesdev->disable_rx_flow_control == 0) ? 1:0;
1383         et_pauseparam->tx_pause = (nesvnic->nesdev->disable_tx_flow_control == 0) ? 1:0;
1384 }
1385
1386
1387 /**
1388  * nes_netdev_set_pauseparam
1389  */
1390 static int nes_netdev_set_pauseparam(struct net_device *netdev,
1391                 struct ethtool_pauseparam *et_pauseparam)
1392 {
1393         struct nes_vnic *nesvnic = netdev_priv(netdev);
1394         struct nes_device *nesdev = nesvnic->nesdev;
1395         u32 u32temp;
1396
1397         if (et_pauseparam->autoneg) {
1398                 /* TODO: should return unsupported */
1399                 return 0;
1400         }
1401         if ((et_pauseparam->tx_pause == 1) && (nesdev->disable_tx_flow_control == 1)) {
1402                 u32temp = nes_read_indexed(nesdev,
1403                                 NES_IDX_MAC_TX_CONFIG + (nesdev->mac_index*0x200));
1404                 u32temp |= NES_IDX_MAC_TX_CONFIG_ENABLE_PAUSE;
1405                 nes_write_indexed(nesdev,
1406                                 NES_IDX_MAC_TX_CONFIG_ENABLE_PAUSE + (nesdev->mac_index*0x200), u32temp);
1407                 nesdev->disable_tx_flow_control = 0;
1408         } else if ((et_pauseparam->tx_pause == 0) && (nesdev->disable_tx_flow_control == 0)) {
1409                 u32temp = nes_read_indexed(nesdev,
1410                                 NES_IDX_MAC_TX_CONFIG + (nesdev->mac_index*0x200));
1411                 u32temp &= ~NES_IDX_MAC_TX_CONFIG_ENABLE_PAUSE;
1412                 nes_write_indexed(nesdev,
1413                                 NES_IDX_MAC_TX_CONFIG_ENABLE_PAUSE + (nesdev->mac_index*0x200), u32temp);
1414                 nesdev->disable_tx_flow_control = 1;
1415         }
1416         if ((et_pauseparam->rx_pause == 1) && (nesdev->disable_rx_flow_control == 1)) {
1417                 u32temp = nes_read_indexed(nesdev,
1418                                 NES_IDX_MPP_DEBUG + (nesdev->mac_index*0x40));
1419                 u32temp &= ~NES_IDX_MPP_DEBUG_PORT_DISABLE_PAUSE;
1420                 nes_write_indexed(nesdev,
1421                                 NES_IDX_MPP_DEBUG + (nesdev->mac_index*0x40), u32temp);
1422                 nesdev->disable_rx_flow_control = 0;
1423         } else if ((et_pauseparam->rx_pause == 0) && (nesdev->disable_rx_flow_control == 0)) {
1424                 u32temp = nes_read_indexed(nesdev,
1425                                 NES_IDX_MPP_DEBUG + (nesdev->mac_index*0x40));
1426                 u32temp |= NES_IDX_MPP_DEBUG_PORT_DISABLE_PAUSE;
1427                 nes_write_indexed(nesdev,
1428                                 NES_IDX_MPP_DEBUG + (nesdev->mac_index*0x40), u32temp);
1429                 nesdev->disable_rx_flow_control = 1;
1430         }
1431
1432         return 0;
1433 }
1434
1435
1436 /**
1437  * nes_netdev_get_settings
1438  */
1439 static int nes_netdev_get_settings(struct net_device *netdev, struct ethtool_cmd *et_cmd)
1440 {
1441         struct nes_vnic *nesvnic = netdev_priv(netdev);
1442         struct nes_device *nesdev = nesvnic->nesdev;
1443         struct nes_adapter *nesadapter = nesdev->nesadapter;
1444         u32 mac_index = nesdev->mac_index;
1445         u8 phy_type = nesadapter->phy_type[mac_index];
1446         u8 phy_index = nesadapter->phy_index[mac_index];
1447         u16 phy_data;
1448
1449         et_cmd->duplex = DUPLEX_FULL;
1450         et_cmd->port   = PORT_MII;
1451         et_cmd->maxtxpkt = 511;
1452         et_cmd->maxrxpkt = 511;
1453
1454         if (nesadapter->OneG_Mode) {
1455                 et_cmd->speed = SPEED_1000;
1456                 if (phy_type == NES_PHY_TYPE_PUMA_1G) {
1457                         et_cmd->supported   = SUPPORTED_1000baseT_Full;
1458                         et_cmd->advertising = ADVERTISED_1000baseT_Full;
1459                         et_cmd->autoneg     = AUTONEG_DISABLE;
1460                         et_cmd->transceiver = XCVR_INTERNAL;
1461                         et_cmd->phy_address = mac_index;
1462                 } else {
1463                         et_cmd->supported   = SUPPORTED_1000baseT_Full
1464                                             | SUPPORTED_Autoneg;
1465                         et_cmd->advertising = ADVERTISED_1000baseT_Full
1466                                             | ADVERTISED_Autoneg;
1467                         nes_read_1G_phy_reg(nesdev, 0, phy_index, &phy_data);
1468                         if (phy_data & 0x1000)
1469                                 et_cmd->autoneg = AUTONEG_ENABLE;
1470                         else
1471                                 et_cmd->autoneg = AUTONEG_DISABLE;
1472                         et_cmd->transceiver = XCVR_EXTERNAL;
1473                         et_cmd->phy_address = phy_index;
1474                 }
1475                 return 0;
1476         }
1477         if ((phy_type == NES_PHY_TYPE_ARGUS) ||
1478             (phy_type == NES_PHY_TYPE_SFP_D) ||
1479             (phy_type == NES_PHY_TYPE_KR)) {
1480                 et_cmd->transceiver = XCVR_EXTERNAL;
1481                 et_cmd->port        = PORT_FIBRE;
1482                 et_cmd->supported   = SUPPORTED_FIBRE;
1483                 et_cmd->advertising = ADVERTISED_FIBRE;
1484                 et_cmd->phy_address = phy_index;
1485         } else {
1486                 et_cmd->transceiver = XCVR_INTERNAL;
1487                 et_cmd->supported   = SUPPORTED_10000baseT_Full;
1488                 et_cmd->advertising = ADVERTISED_10000baseT_Full;
1489                 et_cmd->phy_address = mac_index;
1490         }
1491         et_cmd->speed = SPEED_10000;
1492         et_cmd->autoneg = AUTONEG_DISABLE;
1493         return 0;
1494 }
1495
1496
1497 /**
1498  * nes_netdev_set_settings
1499  */
1500 static int nes_netdev_set_settings(struct net_device *netdev, struct ethtool_cmd *et_cmd)
1501 {
1502         struct nes_vnic *nesvnic = netdev_priv(netdev);
1503         struct nes_device *nesdev = nesvnic->nesdev;
1504         struct nes_adapter *nesadapter = nesdev->nesadapter;
1505         u16 phy_data;
1506
1507         if ((nesadapter->OneG_Mode) &&
1508             (nesadapter->phy_type[nesdev->mac_index] != NES_PHY_TYPE_PUMA_1G)) {
1509                 nes_read_1G_phy_reg(nesdev, 0, nesadapter->phy_index[nesdev->mac_index],
1510                                 &phy_data);
1511                 if (et_cmd->autoneg) {
1512                         /* Turn on Full duplex, Autoneg, and restart autonegotiation */
1513                         phy_data |= 0x1300;
1514                 } else {
1515                         /* Turn off autoneg */
1516                         phy_data &= ~0x1000;
1517                 }
1518                 nes_write_1G_phy_reg(nesdev, 0, nesadapter->phy_index[nesdev->mac_index],
1519                                 phy_data);
1520         }
1521
1522         return 0;
1523 }
1524
1525
1526 static const struct ethtool_ops nes_ethtool_ops = {
1527         .get_link = ethtool_op_get_link,
1528         .get_settings = nes_netdev_get_settings,
1529         .set_settings = nes_netdev_set_settings,
1530         .get_tx_csum = ethtool_op_get_tx_csum,
1531         .get_rx_csum = nes_netdev_get_rx_csum,
1532         .get_sg = ethtool_op_get_sg,
1533         .get_strings = nes_netdev_get_strings,
1534         .get_sset_count = nes_netdev_get_sset_count,
1535         .get_ethtool_stats = nes_netdev_get_ethtool_stats,
1536         .get_drvinfo = nes_netdev_get_drvinfo,
1537         .get_coalesce = nes_netdev_get_coalesce,
1538         .set_coalesce = nes_netdev_set_coalesce,
1539         .get_pauseparam = nes_netdev_get_pauseparam,
1540         .set_pauseparam = nes_netdev_set_pauseparam,
1541         .set_tx_csum = ethtool_op_set_tx_csum,
1542         .set_rx_csum = nes_netdev_set_rx_csum,
1543         .set_sg = ethtool_op_set_sg,
1544         .get_tso = ethtool_op_get_tso,
1545         .set_tso = ethtool_op_set_tso,
1546         .get_flags = ethtool_op_get_flags,
1547         .set_flags = ethtool_op_set_flags,
1548 };
1549
1550
1551 static void nes_netdev_vlan_rx_register(struct net_device *netdev, struct vlan_group *grp)
1552 {
1553         struct nes_vnic *nesvnic = netdev_priv(netdev);
1554         struct nes_device *nesdev = nesvnic->nesdev;
1555         struct nes_adapter *nesadapter = nesdev->nesadapter;
1556         u32 u32temp;
1557         unsigned long flags;
1558
1559         spin_lock_irqsave(&nesadapter->phy_lock, flags);
1560         nesvnic->vlan_grp = grp;
1561
1562         nes_debug(NES_DBG_NETDEV, "%s: %s\n", __func__, netdev->name);
1563
1564         /* Enable/Disable VLAN Stripping */
1565         u32temp = nes_read_indexed(nesdev, NES_IDX_PCIX_DIAG);
1566         if (grp)
1567                 u32temp &= 0xfdffffff;
1568         else
1569                 u32temp |= 0x02000000;
1570
1571         nes_write_indexed(nesdev, NES_IDX_PCIX_DIAG, u32temp);
1572         spin_unlock_irqrestore(&nesadapter->phy_lock, flags);
1573 }
1574
1575 static const struct net_device_ops nes_netdev_ops = {
1576         .ndo_open               = nes_netdev_open,
1577         .ndo_stop               = nes_netdev_stop,
1578         .ndo_start_xmit         = nes_netdev_start_xmit,
1579         .ndo_get_stats          = nes_netdev_get_stats,
1580         .ndo_tx_timeout         = nes_netdev_tx_timeout,
1581         .ndo_set_mac_address    = nes_netdev_set_mac_address,
1582         .ndo_set_multicast_list = nes_netdev_set_multicast_list,
1583         .ndo_change_mtu         = nes_netdev_change_mtu,
1584         .ndo_validate_addr      = eth_validate_addr,
1585         .ndo_vlan_rx_register   = nes_netdev_vlan_rx_register,
1586 };
1587
1588 /**
1589  * nes_netdev_init - initialize network device
1590  */
1591 struct net_device *nes_netdev_init(struct nes_device *nesdev,
1592                 void __iomem *mmio_addr)
1593 {
1594         u64 u64temp;
1595         struct nes_vnic *nesvnic;
1596         struct net_device *netdev;
1597         struct nic_qp_map *curr_qp_map;
1598         u8 phy_type = nesdev->nesadapter->phy_type[nesdev->mac_index];
1599
1600         netdev = alloc_etherdev(sizeof(struct nes_vnic));
1601         if (!netdev) {
1602                 printk(KERN_ERR PFX "nesvnic etherdev alloc failed");
1603                 return NULL;
1604         }
1605         nesvnic = netdev_priv(netdev);
1606
1607         nes_debug(NES_DBG_INIT, "netdev = %p, %s\n", netdev, netdev->name);
1608
1609         SET_NETDEV_DEV(netdev, &nesdev->pcidev->dev);
1610
1611         netdev->watchdog_timeo = NES_TX_TIMEOUT;
1612         netdev->irq = nesdev->pcidev->irq;
1613         netdev->mtu = ETH_DATA_LEN;
1614         netdev->hard_header_len = ETH_HLEN;
1615         netdev->addr_len = ETH_ALEN;
1616         netdev->type = ARPHRD_ETHER;
1617         netdev->features = NETIF_F_HIGHDMA;
1618         netdev->netdev_ops = &nes_netdev_ops;
1619         netdev->ethtool_ops = &nes_ethtool_ops;
1620         netif_napi_add(netdev, &nesvnic->napi, nes_netdev_poll, 128);
1621         nes_debug(NES_DBG_INIT, "Enabling VLAN Insert/Delete.\n");
1622         netdev->features |= NETIF_F_HW_VLAN_TX | NETIF_F_HW_VLAN_RX;
1623
1624         /* Fill in the port structure */
1625         nesvnic->netdev = netdev;
1626         nesvnic->nesdev = nesdev;
1627         nesvnic->msg_enable = netif_msg_init(debug, default_msg);
1628         nesvnic->netdev_index = nesdev->netdev_count;
1629         nesvnic->perfect_filter_index = nesdev->nesadapter->netdev_count;
1630         nesvnic->max_frame_size = netdev->mtu + netdev->hard_header_len + VLAN_HLEN;
1631
1632         curr_qp_map = nic_qp_mapping_per_function[PCI_FUNC(nesdev->pcidev->devfn)];
1633         nesvnic->nic.qp_id = curr_qp_map[nesdev->netdev_count].qpid;
1634         nesvnic->nic_index = curr_qp_map[nesdev->netdev_count].nic_index;
1635         nesvnic->logical_port = curr_qp_map[nesdev->netdev_count].logical_port;
1636
1637         /* Setup the burned in MAC address */
1638         u64temp = (u64)nesdev->nesadapter->mac_addr_low;
1639         u64temp += ((u64)nesdev->nesadapter->mac_addr_high) << 32;
1640         u64temp += nesvnic->nic_index;
1641         netdev->dev_addr[0] = (u8)(u64temp>>40);
1642         netdev->dev_addr[1] = (u8)(u64temp>>32);
1643         netdev->dev_addr[2] = (u8)(u64temp>>24);
1644         netdev->dev_addr[3] = (u8)(u64temp>>16);
1645         netdev->dev_addr[4] = (u8)(u64temp>>8);
1646         netdev->dev_addr[5] = (u8)u64temp;
1647         memcpy(netdev->perm_addr, netdev->dev_addr, 6);
1648
1649         if ((nesvnic->logical_port < 2) || (nesdev->nesadapter->hw_rev != NE020_REV)) {
1650                 netdev->features |= NETIF_F_TSO | NETIF_F_SG | NETIF_F_IP_CSUM;
1651                 netdev->features |= NETIF_F_GSO | NETIF_F_TSO | NETIF_F_SG | NETIF_F_IP_CSUM;
1652         } else {
1653                 netdev->features |= NETIF_F_SG | NETIF_F_IP_CSUM;
1654         }
1655
1656         nes_debug(NES_DBG_INIT, "nesvnic = %p, reported features = 0x%lX, QPid = %d,"
1657                         " nic_index = %d, logical_port = %d, mac_index = %d.\n",
1658                         nesvnic, (unsigned long)netdev->features, nesvnic->nic.qp_id,
1659                         nesvnic->nic_index, nesvnic->logical_port,  nesdev->mac_index);
1660
1661         if (nesvnic->nesdev->nesadapter->port_count == 1 &&
1662                 nesvnic->nesdev->nesadapter->adapter_fcn_count == 1) {
1663
1664                 nesvnic->qp_nic_index[0] = nesvnic->nic_index;
1665                 nesvnic->qp_nic_index[1] = nesvnic->nic_index + 1;
1666                 if (nes_drv_opt & NES_DRV_OPT_DUAL_LOGICAL_PORT) {
1667                         nesvnic->qp_nic_index[2] = 0xf;
1668                         nesvnic->qp_nic_index[3] = 0xf;
1669                 } else {
1670                         nesvnic->qp_nic_index[2] = nesvnic->nic_index + 2;
1671                         nesvnic->qp_nic_index[3] = nesvnic->nic_index + 3;
1672                 }
1673         } else {
1674                 if (nesvnic->nesdev->nesadapter->port_count == 2 ||
1675                         (nesvnic->nesdev->nesadapter->port_count == 1 &&
1676                         nesvnic->nesdev->nesadapter->adapter_fcn_count == 2)) {
1677                                 nesvnic->qp_nic_index[0] = nesvnic->nic_index;
1678                                 nesvnic->qp_nic_index[1] = nesvnic->nic_index
1679                                                                         + 2;
1680                                 nesvnic->qp_nic_index[2] = 0xf;
1681                                 nesvnic->qp_nic_index[3] = 0xf;
1682                 } else {
1683                         nesvnic->qp_nic_index[0] = nesvnic->nic_index;
1684                         nesvnic->qp_nic_index[1] = 0xf;
1685                         nesvnic->qp_nic_index[2] = 0xf;
1686                         nesvnic->qp_nic_index[3] = 0xf;
1687                 }
1688         }
1689         nesvnic->next_qp_nic_index = 0;
1690
1691         if (nesdev->netdev_count == 0) {
1692                 nesvnic->rdma_enabled = 1;
1693         } else {
1694                 nesvnic->rdma_enabled = 0;
1695         }
1696         nesvnic->nic_cq.cq_number = nesvnic->nic.qp_id;
1697         spin_lock_init(&nesvnic->tx_lock);
1698         nesdev->netdev[nesdev->netdev_count] = netdev;
1699
1700         nes_debug(NES_DBG_INIT, "Adding nesvnic (%p) to the adapters nesvnic_list for MAC%d.\n",
1701                         nesvnic, nesdev->mac_index);
1702         list_add_tail(&nesvnic->list, &nesdev->nesadapter->nesvnic_list[nesdev->mac_index]);
1703
1704         if ((nesdev->netdev_count == 0) &&
1705             ((PCI_FUNC(nesdev->pcidev->devfn) == nesdev->mac_index) ||
1706              ((phy_type == NES_PHY_TYPE_PUMA_1G) &&
1707               (((PCI_FUNC(nesdev->pcidev->devfn) == 1) && (nesdev->mac_index == 2)) ||
1708                ((PCI_FUNC(nesdev->pcidev->devfn) == 2) && (nesdev->mac_index == 1)))))) {
1709                 u32 u32temp;
1710                 u32 link_mask;
1711                 u32 link_val;
1712
1713                 u32temp = nes_read_indexed(nesdev, NES_IDX_PHY_PCS_CONTROL_STATUS0 +
1714                                 (0x200 * (nesdev->mac_index & 1)));
1715                 if (phy_type != NES_PHY_TYPE_PUMA_1G) {
1716                         u32temp |= 0x00200000;
1717                         nes_write_indexed(nesdev, NES_IDX_PHY_PCS_CONTROL_STATUS0 +
1718                                 (0x200 * (nesdev->mac_index & 1)), u32temp);
1719                 }
1720
1721                 /* Check and set linkup here.  This is for back to back */
1722                 /* configuration where second port won't get link interrupt */
1723                 switch (phy_type) {
1724                 case NES_PHY_TYPE_PUMA_1G:
1725                         if (nesdev->mac_index < 2) {
1726                                 link_mask = 0x01010000;
1727                                 link_val = 0x01010000;
1728                         } else {
1729                                 link_mask = 0x02020000;
1730                                 link_val = 0x02020000;
1731                         }
1732                         break;
1733                 default:
1734                         link_mask = 0x0f1f0000;
1735                         link_val = 0x0f0f0000;
1736                         break;
1737                 }
1738
1739                 u32temp = nes_read_indexed(nesdev,
1740                                            NES_IDX_PHY_PCS_CONTROL_STATUS0 +
1741                                            (0x200 * (nesdev->mac_index & 1)));
1742                 if ((u32temp & link_mask) == link_val)
1743                         nesvnic->linkup = 1;
1744
1745                 /* clear the MAC interrupt status, assumes direct logical to physical mapping */
1746                 u32temp = nes_read_indexed(nesdev, NES_IDX_MAC_INT_STATUS + (0x200 * nesdev->mac_index));
1747                 nes_debug(NES_DBG_INIT, "Phy interrupt status = 0x%X.\n", u32temp);
1748                 nes_write_indexed(nesdev, NES_IDX_MAC_INT_STATUS + (0x200 * nesdev->mac_index), u32temp);
1749
1750                 nes_init_phy(nesdev);
1751         }
1752
1753         return netdev;
1754 }
1755
1756
1757 /**
1758  * nes_netdev_destroy - destroy network device structure
1759  */
1760 void nes_netdev_destroy(struct net_device *netdev)
1761 {
1762         struct nes_vnic *nesvnic = netdev_priv(netdev);
1763
1764         /* make sure 'stop' method is called by Linux stack */
1765         /* nes_netdev_stop(netdev); */
1766
1767         list_del(&nesvnic->list);
1768
1769         if (nesvnic->of_device_registered) {
1770                 nes_destroy_ofa_device(nesvnic->nesibdev);
1771         }
1772
1773         free_netdev(netdev);
1774 }
1775
1776
1777 /**
1778  * nes_nic_cm_xmit -- CM calls this to send out pkts
1779  */
1780 int nes_nic_cm_xmit(struct sk_buff *skb, struct net_device *netdev)
1781 {
1782         int ret;
1783
1784         skb->dev = netdev;
1785         ret = dev_queue_xmit(skb);
1786         if (ret) {
1787                 nes_debug(NES_DBG_CM, "Bad return code from dev_queue_xmit %d\n", ret);
1788         }
1789
1790         return ret;
1791 }