Commit | Line | Data |
---|---|---|
ae06c70b | 1 | // SPDX-License-Identifier: GPL-2.0 |
51dce24b | 2 | /* Copyright(c) 2009 - 2018 Intel Corporation. */ |
d4e0fe01 | 3 | |
a4ba8cbe JK |
4 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
5 | ||
3314f209 | 6 | #include <linux/bitfield.h> |
d4e0fe01 | 7 | #include <linux/delay.h> |
d4e0fe01 AD |
8 | #include <linux/ethtool.h> |
9 | #include <linux/if_vlan.h> | |
3314f209 JB |
10 | #include <linux/init.h> |
11 | #include <linux/ipv6.h> | |
12 | #include <linux/mii.h> | |
13 | #include <linux/module.h> | |
14 | #include <linux/netdevice.h> | |
15 | #include <linux/pagemap.h> | |
16 | #include <linux/pci.h> | |
70c71606 | 17 | #include <linux/prefetch.h> |
ea6ce602 | 18 | #include <linux/sctp.h> |
3314f209 JB |
19 | #include <linux/slab.h> |
20 | #include <linux/tcp.h> | |
21 | #include <linux/types.h> | |
22 | #include <linux/vmalloc.h> | |
23 | #include <net/checksum.h> | |
24 | #include <net/ip6_checksum.h> | |
d4e0fe01 AD |
25 | #include "igbvf.h" |
26 | ||
d4e0fe01 | 27 | char igbvf_driver_name[] = "igbvf"; |
d4e0fe01 | 28 | static const char igbvf_driver_string[] = |
10090751 | 29 | "Intel(R) Gigabit Virtual Function Network Driver"; |
2c20ebba | 30 | static const char igbvf_copyright[] = |
2a06ed92 | 31 | "Copyright (c) 2009 - 2012 Intel Corporation."; |
d4e0fe01 | 32 | |
b3f4d599 | 33 | #define DEFAULT_MSG_ENABLE (NETIF_MSG_DRV|NETIF_MSG_PROBE|NETIF_MSG_LINK) |
34 | static int debug = -1; | |
35 | module_param(debug, int, 0); | |
36 | MODULE_PARM_DESC(debug, "Debug level (0=none,...,16=all)"); | |
37 | ||
d4e0fe01 | 38 | static int igbvf_poll(struct napi_struct *napi, int budget); |
2d165771 AD |
39 | static void igbvf_reset(struct igbvf_adapter *); |
40 | static void igbvf_set_interrupt_capability(struct igbvf_adapter *); | |
41 | static void igbvf_reset_interrupt_capability(struct igbvf_adapter *); | |
d4e0fe01 AD |
42 | |
43 | static struct igbvf_info igbvf_vf_info = { | |
0340501b JK |
44 | .mac = e1000_vfadapt, |
45 | .flags = 0, | |
46 | .pba = 10, | |
47 | .init_ops = e1000_init_function_pointers_vf, | |
d4e0fe01 AD |
48 | }; |
49 | ||
031d7952 | 50 | static struct igbvf_info igbvf_i350_vf_info = { |
0340501b JK |
51 | .mac = e1000_vfadapt_i350, |
52 | .flags = 0, | |
53 | .pba = 10, | |
54 | .init_ops = e1000_init_function_pointers_vf, | |
031d7952 WM |
55 | }; |
56 | ||
d4e0fe01 | 57 | static const struct igbvf_info *igbvf_info_tbl[] = { |
0340501b JK |
58 | [board_vf] = &igbvf_vf_info, |
59 | [board_i350_vf] = &igbvf_i350_vf_info, | |
d4e0fe01 AD |
60 | }; |
61 | ||
62 | /** | |
63 | * igbvf_desc_unused - calculate if we have unused descriptors | |
b50f7bca | 64 | * @ring: address of receive ring structure |
d4e0fe01 AD |
65 | **/ |
66 | static int igbvf_desc_unused(struct igbvf_ring *ring) | |
67 | { | |
68 | if (ring->next_to_clean > ring->next_to_use) | |
69 | return ring->next_to_clean - ring->next_to_use - 1; | |
70 | ||
71 | return ring->count + ring->next_to_clean - ring->next_to_use - 1; | |
72 | } | |
73 | ||
74 | /** | |
75 | * igbvf_receive_skb - helper function to handle Rx indications | |
76 | * @adapter: board private structure | |
b50f7bca JB |
77 | * @netdev: pointer to netdev struct |
78 | * @skb: skb to indicate to stack | |
d4e0fe01 AD |
79 | * @status: descriptor status field as written by hardware |
80 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
81 | * @skb: pointer to sk_buff to be indicated to stack | |
82 | **/ | |
83 | static void igbvf_receive_skb(struct igbvf_adapter *adapter, | |
0340501b JK |
84 | struct net_device *netdev, |
85 | struct sk_buff *skb, | |
c7cbfb02 | 86 | u32 status, __le16 vlan) |
d4e0fe01 | 87 | { |
2c1a1019 MW |
88 | u16 vid; |
89 | ||
a0f1d603 | 90 | if (status & E1000_RXD_STAT_VP) { |
2c1a1019 MW |
91 | if ((adapter->flags & IGBVF_FLAG_RX_LB_VLAN_BSWAP) && |
92 | (status & E1000_RXDEXT_STATERR_LB)) | |
c7cbfb02 | 93 | vid = be16_to_cpu((__force __be16)vlan) & E1000_RXD_SPC_VLAN_MASK; |
2c1a1019 MW |
94 | else |
95 | vid = le16_to_cpu(vlan) & E1000_RXD_SPC_VLAN_MASK; | |
4d2d55ac | 96 | if (test_bit(vid, adapter->active_vlans)) |
86a9bad3 | 97 | __vlan_hwaccel_put_tag(skb, htons(ETH_P_8021Q), vid); |
a0f1d603 | 98 | } |
2c1a1019 MW |
99 | |
100 | napi_gro_receive(&adapter->rx_ring->napi, skb); | |
d4e0fe01 AD |
101 | } |
102 | ||
103 | static inline void igbvf_rx_checksum_adv(struct igbvf_adapter *adapter, | |
0340501b | 104 | u32 status_err, struct sk_buff *skb) |
d4e0fe01 | 105 | { |
bc8acf2c | 106 | skb_checksum_none_assert(skb); |
d4e0fe01 AD |
107 | |
108 | /* Ignore Checksum bit is set or checksum is disabled through ethtool */ | |
0364d6fd AD |
109 | if ((status_err & E1000_RXD_STAT_IXSM) || |
110 | (adapter->flags & IGBVF_FLAG_RX_CSUM_DISABLED)) | |
d4e0fe01 | 111 | return; |
0364d6fd | 112 | |
d4e0fe01 AD |
113 | /* TCP/UDP checksum error bit is set */ |
114 | if (status_err & | |
115 | (E1000_RXDEXT_STATERR_TCPE | E1000_RXDEXT_STATERR_IPE)) { | |
116 | /* let the stack verify checksum errors */ | |
117 | adapter->hw_csum_err++; | |
118 | return; | |
119 | } | |
0364d6fd | 120 | |
d4e0fe01 AD |
121 | /* It must be a TCP or UDP packet with a valid checksum */ |
122 | if (status_err & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS)) | |
123 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
124 | ||
125 | adapter->hw_csum_good++; | |
126 | } | |
127 | ||
128 | /** | |
129 | * igbvf_alloc_rx_buffers - Replace used receive buffers; packet split | |
130 | * @rx_ring: address of ring structure to repopulate | |
131 | * @cleaned_count: number of buffers to repopulate | |
132 | **/ | |
133 | static void igbvf_alloc_rx_buffers(struct igbvf_ring *rx_ring, | |
0340501b | 134 | int cleaned_count) |
d4e0fe01 AD |
135 | { |
136 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
137 | struct net_device *netdev = adapter->netdev; | |
138 | struct pci_dev *pdev = adapter->pdev; | |
139 | union e1000_adv_rx_desc *rx_desc; | |
140 | struct igbvf_buffer *buffer_info; | |
141 | struct sk_buff *skb; | |
142 | unsigned int i; | |
143 | int bufsz; | |
144 | ||
145 | i = rx_ring->next_to_use; | |
146 | buffer_info = &rx_ring->buffer_info[i]; | |
147 | ||
148 | if (adapter->rx_ps_hdr_size) | |
149 | bufsz = adapter->rx_ps_hdr_size; | |
150 | else | |
151 | bufsz = adapter->rx_buffer_len; | |
d4e0fe01 AD |
152 | |
153 | while (cleaned_count--) { | |
154 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
155 | ||
156 | if (adapter->rx_ps_hdr_size && !buffer_info->page_dma) { | |
157 | if (!buffer_info->page) { | |
158 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
159 | if (!buffer_info->page) { | |
160 | adapter->alloc_rx_buff_failed++; | |
161 | goto no_buffers; | |
162 | } | |
163 | buffer_info->page_offset = 0; | |
164 | } else { | |
165 | buffer_info->page_offset ^= PAGE_SIZE / 2; | |
166 | } | |
167 | buffer_info->page_dma = | |
123e9f1a | 168 | dma_map_page(&pdev->dev, buffer_info->page, |
0340501b JK |
169 | buffer_info->page_offset, |
170 | PAGE_SIZE / 2, | |
123e9f1a | 171 | DMA_FROM_DEVICE); |
91ffb8e0 GR |
172 | if (dma_mapping_error(&pdev->dev, |
173 | buffer_info->page_dma)) { | |
174 | __free_page(buffer_info->page); | |
175 | buffer_info->page = NULL; | |
176 | dev_err(&pdev->dev, "RX DMA map failed\n"); | |
177 | break; | |
178 | } | |
d4e0fe01 AD |
179 | } |
180 | ||
181 | if (!buffer_info->skb) { | |
89d71a66 | 182 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
d4e0fe01 AD |
183 | if (!skb) { |
184 | adapter->alloc_rx_buff_failed++; | |
185 | goto no_buffers; | |
186 | } | |
187 | ||
d4e0fe01 | 188 | buffer_info->skb = skb; |
123e9f1a | 189 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
0340501b | 190 | bufsz, |
123e9f1a | 191 | DMA_FROM_DEVICE); |
91ffb8e0 GR |
192 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { |
193 | dev_kfree_skb(buffer_info->skb); | |
194 | buffer_info->skb = NULL; | |
195 | dev_err(&pdev->dev, "RX DMA map failed\n"); | |
196 | goto no_buffers; | |
197 | } | |
d4e0fe01 AD |
198 | } |
199 | /* Refresh the desc even if buffer_addrs didn't change because | |
0340501b JK |
200 | * each write-back erases this info. |
201 | */ | |
d4e0fe01 AD |
202 | if (adapter->rx_ps_hdr_size) { |
203 | rx_desc->read.pkt_addr = | |
204 | cpu_to_le64(buffer_info->page_dma); | |
205 | rx_desc->read.hdr_addr = cpu_to_le64(buffer_info->dma); | |
206 | } else { | |
0340501b | 207 | rx_desc->read.pkt_addr = cpu_to_le64(buffer_info->dma); |
d4e0fe01 AD |
208 | rx_desc->read.hdr_addr = 0; |
209 | } | |
210 | ||
211 | i++; | |
212 | if (i == rx_ring->count) | |
213 | i = 0; | |
214 | buffer_info = &rx_ring->buffer_info[i]; | |
215 | } | |
216 | ||
217 | no_buffers: | |
218 | if (rx_ring->next_to_use != i) { | |
219 | rx_ring->next_to_use = i; | |
220 | if (i == 0) | |
221 | i = (rx_ring->count - 1); | |
222 | else | |
223 | i--; | |
224 | ||
225 | /* Force memory writes to complete before letting h/w | |
226 | * know there are new descriptors to fetch. (Only | |
227 | * applicable for weak-ordered memory model archs, | |
0340501b JK |
228 | * such as IA-64). |
229 | */ | |
d4e0fe01 AD |
230 | wmb(); |
231 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
232 | } | |
233 | } | |
234 | ||
235 | /** | |
236 | * igbvf_clean_rx_irq - Send received data up the network stack; legacy | |
237 | * @adapter: board private structure | |
b50f7bca JB |
238 | * @work_done: output parameter used to indicate completed work |
239 | * @work_to_do: input parameter setting limit of work | |
d4e0fe01 AD |
240 | * |
241 | * the return value indicates whether actual cleaning was done, there | |
242 | * is no guarantee that everything was cleaned | |
243 | **/ | |
244 | static bool igbvf_clean_rx_irq(struct igbvf_adapter *adapter, | |
0340501b | 245 | int *work_done, int work_to_do) |
d4e0fe01 AD |
246 | { |
247 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
248 | struct net_device *netdev = adapter->netdev; | |
249 | struct pci_dev *pdev = adapter->pdev; | |
250 | union e1000_adv_rx_desc *rx_desc, *next_rxd; | |
251 | struct igbvf_buffer *buffer_info, *next_buffer; | |
252 | struct sk_buff *skb; | |
253 | bool cleaned = false; | |
254 | int cleaned_count = 0; | |
255 | unsigned int total_bytes = 0, total_packets = 0; | |
256 | unsigned int i; | |
257 | u32 length, hlen, staterr; | |
258 | ||
259 | i = rx_ring->next_to_clean; | |
260 | rx_desc = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
261 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
262 | ||
263 | while (staterr & E1000_RXD_STAT_DD) { | |
264 | if (*work_done >= work_to_do) | |
265 | break; | |
266 | (*work_done)++; | |
2d0bb1c1 | 267 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
d4e0fe01 AD |
268 | |
269 | buffer_info = &rx_ring->buffer_info[i]; | |
270 | ||
271 | /* HW will not DMA in data larger than the given buffer, even | |
272 | * if it parses the (NFS, of course) header to be larger. In | |
273 | * that case, it fills the header buffer and spills the rest | |
274 | * into the page. | |
275 | */ | |
b9a45254 JB |
276 | hlen = le16_get_bits(rx_desc->wb.lower.lo_dword.hs_rss.hdr_info, |
277 | E1000_RXDADV_HDRBUFLEN_MASK); | |
d4e0fe01 AD |
278 | if (hlen > adapter->rx_ps_hdr_size) |
279 | hlen = adapter->rx_ps_hdr_size; | |
280 | ||
281 | length = le16_to_cpu(rx_desc->wb.upper.length); | |
282 | cleaned = true; | |
283 | cleaned_count++; | |
284 | ||
285 | skb = buffer_info->skb; | |
286 | prefetch(skb->data - NET_IP_ALIGN); | |
287 | buffer_info->skb = NULL; | |
288 | if (!adapter->rx_ps_hdr_size) { | |
123e9f1a | 289 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
0340501b | 290 | adapter->rx_buffer_len, |
123e9f1a | 291 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
292 | buffer_info->dma = 0; |
293 | skb_put(skb, length); | |
294 | goto send_up; | |
295 | } | |
296 | ||
297 | if (!skb_shinfo(skb)->nr_frags) { | |
123e9f1a | 298 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
0340501b | 299 | adapter->rx_ps_hdr_size, |
123e9f1a | 300 | DMA_FROM_DEVICE); |
fae5ecae | 301 | buffer_info->dma = 0; |
d4e0fe01 AD |
302 | skb_put(skb, hlen); |
303 | } | |
304 | ||
305 | if (length) { | |
123e9f1a | 306 | dma_unmap_page(&pdev->dev, buffer_info->page_dma, |
0340501b | 307 | PAGE_SIZE / 2, |
123e9f1a | 308 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
309 | buffer_info->page_dma = 0; |
310 | ||
ec857fd4 | 311 | skb_fill_page_desc(skb, skb_shinfo(skb)->nr_frags, |
0340501b JK |
312 | buffer_info->page, |
313 | buffer_info->page_offset, | |
314 | length); | |
d4e0fe01 AD |
315 | |
316 | if ((adapter->rx_buffer_len > (PAGE_SIZE / 2)) || | |
317 | (page_count(buffer_info->page) != 1)) | |
318 | buffer_info->page = NULL; | |
319 | else | |
320 | get_page(buffer_info->page); | |
321 | ||
322 | skb->len += length; | |
323 | skb->data_len += length; | |
7b8b5961 | 324 | skb->truesize += PAGE_SIZE / 2; |
d4e0fe01 AD |
325 | } |
326 | send_up: | |
327 | i++; | |
328 | if (i == rx_ring->count) | |
329 | i = 0; | |
330 | next_rxd = IGBVF_RX_DESC_ADV(*rx_ring, i); | |
331 | prefetch(next_rxd); | |
332 | next_buffer = &rx_ring->buffer_info[i]; | |
333 | ||
334 | if (!(staterr & E1000_RXD_STAT_EOP)) { | |
335 | buffer_info->skb = next_buffer->skb; | |
336 | buffer_info->dma = next_buffer->dma; | |
337 | next_buffer->skb = skb; | |
338 | next_buffer->dma = 0; | |
339 | goto next_desc; | |
340 | } | |
341 | ||
342 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
343 | dev_kfree_skb_irq(skb); | |
344 | goto next_desc; | |
345 | } | |
346 | ||
347 | total_bytes += skb->len; | |
348 | total_packets++; | |
349 | ||
350 | igbvf_rx_checksum_adv(adapter, staterr, skb); | |
351 | ||
352 | skb->protocol = eth_type_trans(skb, netdev); | |
353 | ||
354 | igbvf_receive_skb(adapter, netdev, skb, staterr, | |
0340501b | 355 | rx_desc->wb.upper.vlan); |
d4e0fe01 | 356 | |
d4e0fe01 AD |
357 | next_desc: |
358 | rx_desc->wb.upper.status_error = 0; | |
359 | ||
360 | /* return some buffers to hardware, one at a time is too slow */ | |
361 | if (cleaned_count >= IGBVF_RX_BUFFER_WRITE) { | |
362 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
363 | cleaned_count = 0; | |
364 | } | |
365 | ||
366 | /* use prefetched values */ | |
367 | rx_desc = next_rxd; | |
368 | buffer_info = next_buffer; | |
369 | ||
370 | staterr = le32_to_cpu(rx_desc->wb.upper.status_error); | |
371 | } | |
372 | ||
373 | rx_ring->next_to_clean = i; | |
374 | cleaned_count = igbvf_desc_unused(rx_ring); | |
375 | ||
376 | if (cleaned_count) | |
377 | igbvf_alloc_rx_buffers(rx_ring, cleaned_count); | |
378 | ||
379 | adapter->total_rx_packets += total_packets; | |
380 | adapter->total_rx_bytes += total_bytes; | |
55c05dd0 TK |
381 | netdev->stats.rx_bytes += total_bytes; |
382 | netdev->stats.rx_packets += total_packets; | |
d4e0fe01 AD |
383 | return cleaned; |
384 | } | |
385 | ||
386 | static void igbvf_put_txbuf(struct igbvf_adapter *adapter, | |
0340501b | 387 | struct igbvf_buffer *buffer_info) |
d4e0fe01 | 388 | { |
a7d5ca40 AD |
389 | if (buffer_info->dma) { |
390 | if (buffer_info->mapped_as_page) | |
123e9f1a | 391 | dma_unmap_page(&adapter->pdev->dev, |
a7d5ca40 AD |
392 | buffer_info->dma, |
393 | buffer_info->length, | |
123e9f1a | 394 | DMA_TO_DEVICE); |
a7d5ca40 | 395 | else |
123e9f1a | 396 | dma_unmap_single(&adapter->pdev->dev, |
a7d5ca40 AD |
397 | buffer_info->dma, |
398 | buffer_info->length, | |
123e9f1a | 399 | DMA_TO_DEVICE); |
a7d5ca40 AD |
400 | buffer_info->dma = 0; |
401 | } | |
d4e0fe01 | 402 | if (buffer_info->skb) { |
d4e0fe01 AD |
403 | dev_kfree_skb_any(buffer_info->skb); |
404 | buffer_info->skb = NULL; | |
405 | } | |
406 | buffer_info->time_stamp = 0; | |
407 | } | |
408 | ||
d4e0fe01 AD |
409 | /** |
410 | * igbvf_setup_tx_resources - allocate Tx resources (Descriptors) | |
411 | * @adapter: board private structure | |
b50f7bca | 412 | * @tx_ring: ring being initialized |
d4e0fe01 AD |
413 | * |
414 | * Return 0 on success, negative on failure | |
415 | **/ | |
416 | int igbvf_setup_tx_resources(struct igbvf_adapter *adapter, | |
0340501b | 417 | struct igbvf_ring *tx_ring) |
d4e0fe01 AD |
418 | { |
419 | struct pci_dev *pdev = adapter->pdev; | |
420 | int size; | |
421 | ||
422 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
89bf67f1 | 423 | tx_ring->buffer_info = vzalloc(size); |
d4e0fe01 AD |
424 | if (!tx_ring->buffer_info) |
425 | goto err; | |
d4e0fe01 AD |
426 | |
427 | /* round up to nearest 4K */ | |
428 | tx_ring->size = tx_ring->count * sizeof(union e1000_adv_tx_desc); | |
429 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
430 | ||
123e9f1a NN |
431 | tx_ring->desc = dma_alloc_coherent(&pdev->dev, tx_ring->size, |
432 | &tx_ring->dma, GFP_KERNEL); | |
d4e0fe01 AD |
433 | if (!tx_ring->desc) |
434 | goto err; | |
435 | ||
436 | tx_ring->adapter = adapter; | |
437 | tx_ring->next_to_use = 0; | |
438 | tx_ring->next_to_clean = 0; | |
439 | ||
440 | return 0; | |
441 | err: | |
442 | vfree(tx_ring->buffer_info); | |
443 | dev_err(&adapter->pdev->dev, | |
0340501b | 444 | "Unable to allocate memory for the transmit descriptor ring\n"); |
d4e0fe01 AD |
445 | return -ENOMEM; |
446 | } | |
447 | ||
448 | /** | |
449 | * igbvf_setup_rx_resources - allocate Rx resources (Descriptors) | |
450 | * @adapter: board private structure | |
b50f7bca | 451 | * @rx_ring: ring being initialized |
d4e0fe01 AD |
452 | * |
453 | * Returns 0 on success, negative on failure | |
454 | **/ | |
455 | int igbvf_setup_rx_resources(struct igbvf_adapter *adapter, | |
456 | struct igbvf_ring *rx_ring) | |
457 | { | |
458 | struct pci_dev *pdev = adapter->pdev; | |
459 | int size, desc_len; | |
460 | ||
461 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
89bf67f1 | 462 | rx_ring->buffer_info = vzalloc(size); |
d4e0fe01 AD |
463 | if (!rx_ring->buffer_info) |
464 | goto err; | |
d4e0fe01 AD |
465 | |
466 | desc_len = sizeof(union e1000_adv_rx_desc); | |
467 | ||
468 | /* Round up to nearest 4K */ | |
469 | rx_ring->size = rx_ring->count * desc_len; | |
470 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
471 | ||
123e9f1a NN |
472 | rx_ring->desc = dma_alloc_coherent(&pdev->dev, rx_ring->size, |
473 | &rx_ring->dma, GFP_KERNEL); | |
d4e0fe01 AD |
474 | if (!rx_ring->desc) |
475 | goto err; | |
476 | ||
477 | rx_ring->next_to_clean = 0; | |
478 | rx_ring->next_to_use = 0; | |
479 | ||
480 | rx_ring->adapter = adapter; | |
481 | ||
482 | return 0; | |
483 | ||
484 | err: | |
485 | vfree(rx_ring->buffer_info); | |
486 | rx_ring->buffer_info = NULL; | |
487 | dev_err(&adapter->pdev->dev, | |
0340501b | 488 | "Unable to allocate memory for the receive descriptor ring\n"); |
d4e0fe01 AD |
489 | return -ENOMEM; |
490 | } | |
491 | ||
492 | /** | |
493 | * igbvf_clean_tx_ring - Free Tx Buffers | |
494 | * @tx_ring: ring to be cleaned | |
495 | **/ | |
496 | static void igbvf_clean_tx_ring(struct igbvf_ring *tx_ring) | |
497 | { | |
498 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
499 | struct igbvf_buffer *buffer_info; | |
500 | unsigned long size; | |
501 | unsigned int i; | |
502 | ||
503 | if (!tx_ring->buffer_info) | |
504 | return; | |
505 | ||
506 | /* Free all the Tx ring sk_buffs */ | |
507 | for (i = 0; i < tx_ring->count; i++) { | |
508 | buffer_info = &tx_ring->buffer_info[i]; | |
509 | igbvf_put_txbuf(adapter, buffer_info); | |
510 | } | |
511 | ||
512 | size = sizeof(struct igbvf_buffer) * tx_ring->count; | |
513 | memset(tx_ring->buffer_info, 0, size); | |
514 | ||
515 | /* Zero out the descriptor ring */ | |
516 | memset(tx_ring->desc, 0, tx_ring->size); | |
517 | ||
518 | tx_ring->next_to_use = 0; | |
519 | tx_ring->next_to_clean = 0; | |
520 | ||
521 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
522 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
523 | } | |
524 | ||
525 | /** | |
526 | * igbvf_free_tx_resources - Free Tx Resources per Queue | |
527 | * @tx_ring: ring to free resources from | |
528 | * | |
529 | * Free all transmit software resources | |
530 | **/ | |
531 | void igbvf_free_tx_resources(struct igbvf_ring *tx_ring) | |
532 | { | |
533 | struct pci_dev *pdev = tx_ring->adapter->pdev; | |
534 | ||
535 | igbvf_clean_tx_ring(tx_ring); | |
536 | ||
537 | vfree(tx_ring->buffer_info); | |
538 | tx_ring->buffer_info = NULL; | |
539 | ||
123e9f1a NN |
540 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, |
541 | tx_ring->dma); | |
d4e0fe01 AD |
542 | |
543 | tx_ring->desc = NULL; | |
544 | } | |
545 | ||
546 | /** | |
547 | * igbvf_clean_rx_ring - Free Rx Buffers per Queue | |
b50f7bca | 548 | * @rx_ring: ring structure pointer to free buffers from |
d4e0fe01 AD |
549 | **/ |
550 | static void igbvf_clean_rx_ring(struct igbvf_ring *rx_ring) | |
551 | { | |
552 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
553 | struct igbvf_buffer *buffer_info; | |
554 | struct pci_dev *pdev = adapter->pdev; | |
555 | unsigned long size; | |
556 | unsigned int i; | |
557 | ||
558 | if (!rx_ring->buffer_info) | |
559 | return; | |
560 | ||
561 | /* Free all the Rx ring sk_buffs */ | |
562 | for (i = 0; i < rx_ring->count; i++) { | |
563 | buffer_info = &rx_ring->buffer_info[i]; | |
564 | if (buffer_info->dma) { | |
0340501b | 565 | if (adapter->rx_ps_hdr_size) { |
123e9f1a | 566 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
0340501b | 567 | adapter->rx_ps_hdr_size, |
123e9f1a | 568 | DMA_FROM_DEVICE); |
d4e0fe01 | 569 | } else { |
123e9f1a | 570 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
0340501b | 571 | adapter->rx_buffer_len, |
123e9f1a | 572 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
573 | } |
574 | buffer_info->dma = 0; | |
575 | } | |
576 | ||
577 | if (buffer_info->skb) { | |
578 | dev_kfree_skb(buffer_info->skb); | |
579 | buffer_info->skb = NULL; | |
580 | } | |
581 | ||
582 | if (buffer_info->page) { | |
583 | if (buffer_info->page_dma) | |
123e9f1a NN |
584 | dma_unmap_page(&pdev->dev, |
585 | buffer_info->page_dma, | |
0340501b | 586 | PAGE_SIZE / 2, |
123e9f1a | 587 | DMA_FROM_DEVICE); |
d4e0fe01 AD |
588 | put_page(buffer_info->page); |
589 | buffer_info->page = NULL; | |
590 | buffer_info->page_dma = 0; | |
591 | buffer_info->page_offset = 0; | |
592 | } | |
593 | } | |
594 | ||
595 | size = sizeof(struct igbvf_buffer) * rx_ring->count; | |
596 | memset(rx_ring->buffer_info, 0, size); | |
597 | ||
598 | /* Zero out the descriptor ring */ | |
599 | memset(rx_ring->desc, 0, rx_ring->size); | |
600 | ||
601 | rx_ring->next_to_clean = 0; | |
602 | rx_ring->next_to_use = 0; | |
603 | ||
604 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
605 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
606 | } | |
607 | ||
608 | /** | |
609 | * igbvf_free_rx_resources - Free Rx Resources | |
610 | * @rx_ring: ring to clean the resources from | |
611 | * | |
612 | * Free all receive software resources | |
613 | **/ | |
614 | ||
615 | void igbvf_free_rx_resources(struct igbvf_ring *rx_ring) | |
616 | { | |
617 | struct pci_dev *pdev = rx_ring->adapter->pdev; | |
618 | ||
619 | igbvf_clean_rx_ring(rx_ring); | |
620 | ||
621 | vfree(rx_ring->buffer_info); | |
622 | rx_ring->buffer_info = NULL; | |
623 | ||
624 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, | |
0340501b | 625 | rx_ring->dma); |
d4e0fe01 AD |
626 | rx_ring->desc = NULL; |
627 | } | |
628 | ||
629 | /** | |
630 | * igbvf_update_itr - update the dynamic ITR value based on statistics | |
631 | * @adapter: pointer to adapter | |
632 | * @itr_setting: current adapter->itr | |
633 | * @packets: the number of packets during this measurement interval | |
634 | * @bytes: the number of bytes during this measurement interval | |
635 | * | |
0340501b JK |
636 | * Stores a new ITR value based on packets and byte counts during the last |
637 | * interrupt. The advantage of per interrupt computation is faster updates | |
638 | * and more accurate ITR for the current traffic pattern. Constants in this | |
639 | * function were computed based on theoretical maximum wire speed and thresholds | |
640 | * were set based on testing data as well as attempting to minimize response | |
641 | * time while increasing bulk throughput. | |
d4e0fe01 | 642 | **/ |
ab50a2a4 MW |
643 | static enum latency_range igbvf_update_itr(struct igbvf_adapter *adapter, |
644 | enum latency_range itr_setting, | |
645 | int packets, int bytes) | |
d4e0fe01 | 646 | { |
ab50a2a4 | 647 | enum latency_range retval = itr_setting; |
d4e0fe01 AD |
648 | |
649 | if (packets == 0) | |
650 | goto update_itr_done; | |
651 | ||
652 | switch (itr_setting) { | |
653 | case lowest_latency: | |
654 | /* handle TSO and jumbo frames */ | |
655 | if (bytes/packets > 8000) | |
656 | retval = bulk_latency; | |
657 | else if ((packets < 5) && (bytes > 512)) | |
658 | retval = low_latency; | |
659 | break; | |
660 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
661 | if (bytes > 10000) { | |
662 | /* this if handles the TSO accounting */ | |
663 | if (bytes/packets > 8000) | |
664 | retval = bulk_latency; | |
665 | else if ((packets < 10) || ((bytes/packets) > 1200)) | |
666 | retval = bulk_latency; | |
667 | else if ((packets > 35)) | |
668 | retval = lowest_latency; | |
669 | } else if (bytes/packets > 2000) { | |
670 | retval = bulk_latency; | |
671 | } else if (packets <= 2 && bytes < 512) { | |
672 | retval = lowest_latency; | |
673 | } | |
674 | break; | |
675 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
676 | if (bytes > 25000) { | |
677 | if (packets > 35) | |
678 | retval = low_latency; | |
679 | } else if (bytes < 6000) { | |
680 | retval = low_latency; | |
681 | } | |
682 | break; | |
ab50a2a4 MW |
683 | default: |
684 | break; | |
d4e0fe01 AD |
685 | } |
686 | ||
687 | update_itr_done: | |
688 | return retval; | |
689 | } | |
690 | ||
ab50a2a4 | 691 | static int igbvf_range_to_itr(enum latency_range current_range) |
d4e0fe01 | 692 | { |
ab50a2a4 | 693 | int new_itr; |
d4e0fe01 | 694 | |
ab50a2a4 | 695 | switch (current_range) { |
d4e0fe01 AD |
696 | /* counts and packets in update_itr are dependent on these numbers */ |
697 | case lowest_latency: | |
ab50a2a4 | 698 | new_itr = IGBVF_70K_ITR; |
d4e0fe01 AD |
699 | break; |
700 | case low_latency: | |
ab50a2a4 | 701 | new_itr = IGBVF_20K_ITR; |
d4e0fe01 AD |
702 | break; |
703 | case bulk_latency: | |
ab50a2a4 | 704 | new_itr = IGBVF_4K_ITR; |
d4e0fe01 AD |
705 | break; |
706 | default: | |
ab50a2a4 | 707 | new_itr = IGBVF_START_ITR; |
d4e0fe01 AD |
708 | break; |
709 | } | |
ab50a2a4 MW |
710 | return new_itr; |
711 | } | |
712 | ||
713 | static void igbvf_set_itr(struct igbvf_adapter *adapter) | |
714 | { | |
715 | u32 new_itr; | |
716 | ||
717 | adapter->tx_ring->itr_range = | |
718 | igbvf_update_itr(adapter, | |
719 | adapter->tx_ring->itr_val, | |
720 | adapter->total_tx_packets, | |
721 | adapter->total_tx_bytes); | |
722 | ||
723 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
724 | if (adapter->requested_itr == 3 && | |
725 | adapter->tx_ring->itr_range == lowest_latency) | |
726 | adapter->tx_ring->itr_range = low_latency; | |
d4e0fe01 | 727 | |
ab50a2a4 MW |
728 | new_itr = igbvf_range_to_itr(adapter->tx_ring->itr_range); |
729 | ||
ab50a2a4 MW |
730 | if (new_itr != adapter->tx_ring->itr_val) { |
731 | u32 current_itr = adapter->tx_ring->itr_val; | |
0340501b | 732 | /* this attempts to bias the interrupt rate towards Bulk |
d4e0fe01 AD |
733 | * by adding intermediate steps when interrupt rate is |
734 | * increasing | |
735 | */ | |
ab50a2a4 | 736 | new_itr = new_itr > current_itr ? |
0340501b JK |
737 | min(current_itr + (new_itr >> 2), new_itr) : |
738 | new_itr; | |
ab50a2a4 MW |
739 | adapter->tx_ring->itr_val = new_itr; |
740 | ||
741 | adapter->tx_ring->set_itr = 1; | |
742 | } | |
743 | ||
744 | adapter->rx_ring->itr_range = | |
745 | igbvf_update_itr(adapter, adapter->rx_ring->itr_val, | |
746 | adapter->total_rx_packets, | |
747 | adapter->total_rx_bytes); | |
748 | if (adapter->requested_itr == 3 && | |
749 | adapter->rx_ring->itr_range == lowest_latency) | |
750 | adapter->rx_ring->itr_range = low_latency; | |
751 | ||
752 | new_itr = igbvf_range_to_itr(adapter->rx_ring->itr_range); | |
753 | ||
754 | if (new_itr != adapter->rx_ring->itr_val) { | |
755 | u32 current_itr = adapter->rx_ring->itr_val; | |
0340501b | 756 | |
ab50a2a4 | 757 | new_itr = new_itr > current_itr ? |
0340501b JK |
758 | min(current_itr + (new_itr >> 2), new_itr) : |
759 | new_itr; | |
ab50a2a4 MW |
760 | adapter->rx_ring->itr_val = new_itr; |
761 | ||
762 | adapter->rx_ring->set_itr = 1; | |
d4e0fe01 AD |
763 | } |
764 | } | |
765 | ||
766 | /** | |
767 | * igbvf_clean_tx_irq - Reclaim resources after transmit completes | |
b50f7bca | 768 | * @tx_ring: ring structure to clean descriptors from |
49ce9c2c | 769 | * |
d4e0fe01 AD |
770 | * returns true if ring is completely cleaned |
771 | **/ | |
772 | static bool igbvf_clean_tx_irq(struct igbvf_ring *tx_ring) | |
773 | { | |
774 | struct igbvf_adapter *adapter = tx_ring->adapter; | |
d4e0fe01 AD |
775 | struct net_device *netdev = adapter->netdev; |
776 | struct igbvf_buffer *buffer_info; | |
777 | struct sk_buff *skb; | |
778 | union e1000_adv_tx_desc *tx_desc, *eop_desc; | |
779 | unsigned int total_bytes = 0, total_packets = 0; | |
3eb1a40f | 780 | unsigned int i, count = 0; |
d4e0fe01 AD |
781 | bool cleaned = false; |
782 | ||
783 | i = tx_ring->next_to_clean; | |
3eb1a40f AD |
784 | buffer_info = &tx_ring->buffer_info[i]; |
785 | eop_desc = buffer_info->next_to_watch; | |
786 | ||
787 | do { | |
788 | /* if next_to_watch is not set then there is no work pending */ | |
789 | if (!eop_desc) | |
790 | break; | |
791 | ||
792 | /* prevent any other reads prior to eop_desc */ | |
1e1f9ca5 | 793 | smp_rmb(); |
3eb1a40f AD |
794 | |
795 | /* if DD is not set pending work has not been completed */ | |
796 | if (!(eop_desc->wb.status & cpu_to_le32(E1000_TXD_STAT_DD))) | |
797 | break; | |
798 | ||
799 | /* clear next_to_watch to prevent false hangs */ | |
800 | buffer_info->next_to_watch = NULL; | |
d4e0fe01 | 801 | |
d4e0fe01 AD |
802 | for (cleaned = false; !cleaned; count++) { |
803 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
3eb1a40f | 804 | cleaned = (tx_desc == eop_desc); |
d4e0fe01 AD |
805 | skb = buffer_info->skb; |
806 | ||
807 | if (skb) { | |
808 | unsigned int segs, bytecount; | |
809 | ||
810 | /* gso_segs is currently only valid for tcp */ | |
811 | segs = skb_shinfo(skb)->gso_segs ?: 1; | |
812 | /* multiply data chunks by size of headers */ | |
813 | bytecount = ((segs - 1) * skb_headlen(skb)) + | |
0340501b | 814 | skb->len; |
d4e0fe01 AD |
815 | total_packets += segs; |
816 | total_bytes += bytecount; | |
817 | } | |
818 | ||
819 | igbvf_put_txbuf(adapter, buffer_info); | |
820 | tx_desc->wb.status = 0; | |
821 | ||
822 | i++; | |
823 | if (i == tx_ring->count) | |
824 | i = 0; | |
3eb1a40f AD |
825 | |
826 | buffer_info = &tx_ring->buffer_info[i]; | |
d4e0fe01 | 827 | } |
3eb1a40f AD |
828 | |
829 | eop_desc = buffer_info->next_to_watch; | |
830 | } while (count < tx_ring->count); | |
d4e0fe01 AD |
831 | |
832 | tx_ring->next_to_clean = i; | |
833 | ||
0340501b JK |
834 | if (unlikely(count && netif_carrier_ok(netdev) && |
835 | igbvf_desc_unused(tx_ring) >= IGBVF_TX_QUEUE_WAKE)) { | |
d4e0fe01 AD |
836 | /* Make sure that anybody stopping the queue after this |
837 | * sees the new next_to_clean. | |
838 | */ | |
839 | smp_mb(); | |
840 | if (netif_queue_stopped(netdev) && | |
841 | !(test_bit(__IGBVF_DOWN, &adapter->state))) { | |
842 | netif_wake_queue(netdev); | |
843 | ++adapter->restart_queue; | |
844 | } | |
845 | } | |
846 | ||
55c05dd0 TK |
847 | netdev->stats.tx_bytes += total_bytes; |
848 | netdev->stats.tx_packets += total_packets; | |
807540ba | 849 | return count < tx_ring->count; |
d4e0fe01 AD |
850 | } |
851 | ||
852 | static irqreturn_t igbvf_msix_other(int irq, void *data) | |
853 | { | |
854 | struct net_device *netdev = data; | |
855 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
856 | struct e1000_hw *hw = &adapter->hw; | |
857 | ||
858 | adapter->int_counter1++; | |
859 | ||
d4e0fe01 AD |
860 | hw->mac.get_link_status = 1; |
861 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
862 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
863 | ||
864 | ew32(EIMS, adapter->eims_other); | |
865 | ||
866 | return IRQ_HANDLED; | |
867 | } | |
868 | ||
869 | static irqreturn_t igbvf_intr_msix_tx(int irq, void *data) | |
870 | { | |
871 | struct net_device *netdev = data; | |
872 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
873 | struct e1000_hw *hw = &adapter->hw; | |
874 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
875 | ||
ab50a2a4 MW |
876 | if (tx_ring->set_itr) { |
877 | writel(tx_ring->itr_val, | |
878 | adapter->hw.hw_addr + tx_ring->itr_register); | |
879 | adapter->tx_ring->set_itr = 0; | |
880 | } | |
d4e0fe01 AD |
881 | |
882 | adapter->total_tx_bytes = 0; | |
883 | adapter->total_tx_packets = 0; | |
884 | ||
0340501b JK |
885 | /* auto mask will automatically re-enable the interrupt when we write |
886 | * EICS | |
887 | */ | |
d4e0fe01 AD |
888 | if (!igbvf_clean_tx_irq(tx_ring)) |
889 | /* Ring was not completely cleaned, so fire another interrupt */ | |
890 | ew32(EICS, tx_ring->eims_value); | |
891 | else | |
892 | ew32(EIMS, tx_ring->eims_value); | |
893 | ||
894 | return IRQ_HANDLED; | |
895 | } | |
896 | ||
897 | static irqreturn_t igbvf_intr_msix_rx(int irq, void *data) | |
898 | { | |
899 | struct net_device *netdev = data; | |
900 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
901 | ||
902 | adapter->int_counter0++; | |
903 | ||
904 | /* Write the ITR value calculated at the end of the | |
905 | * previous interrupt. | |
906 | */ | |
907 | if (adapter->rx_ring->set_itr) { | |
908 | writel(adapter->rx_ring->itr_val, | |
909 | adapter->hw.hw_addr + adapter->rx_ring->itr_register); | |
910 | adapter->rx_ring->set_itr = 0; | |
911 | } | |
912 | ||
913 | if (napi_schedule_prep(&adapter->rx_ring->napi)) { | |
914 | adapter->total_rx_bytes = 0; | |
915 | adapter->total_rx_packets = 0; | |
916 | __napi_schedule(&adapter->rx_ring->napi); | |
917 | } | |
918 | ||
919 | return IRQ_HANDLED; | |
920 | } | |
921 | ||
922 | #define IGBVF_NO_QUEUE -1 | |
923 | ||
924 | static void igbvf_assign_vector(struct igbvf_adapter *adapter, int rx_queue, | |
0340501b | 925 | int tx_queue, int msix_vector) |
d4e0fe01 AD |
926 | { |
927 | struct e1000_hw *hw = &adapter->hw; | |
928 | u32 ivar, index; | |
929 | ||
930 | /* 82576 uses a table-based method for assigning vectors. | |
0340501b JK |
931 | * Each queue has a single entry in the table to which we write |
932 | * a vector number along with a "valid" bit. Sadly, the layout | |
933 | * of the table is somewhat counterintuitive. | |
934 | */ | |
d4e0fe01 AD |
935 | if (rx_queue > IGBVF_NO_QUEUE) { |
936 | index = (rx_queue >> 1); | |
937 | ivar = array_er32(IVAR0, index); | |
938 | if (rx_queue & 0x1) { | |
939 | /* vector goes into third byte of register */ | |
940 | ivar = ivar & 0xFF00FFFF; | |
941 | ivar |= (msix_vector | E1000_IVAR_VALID) << 16; | |
942 | } else { | |
943 | /* vector goes into low byte of register */ | |
944 | ivar = ivar & 0xFFFFFF00; | |
945 | ivar |= msix_vector | E1000_IVAR_VALID; | |
946 | } | |
0ed2dbf4 | 947 | adapter->rx_ring[rx_queue].eims_value = BIT(msix_vector); |
d4e0fe01 AD |
948 | array_ew32(IVAR0, index, ivar); |
949 | } | |
950 | if (tx_queue > IGBVF_NO_QUEUE) { | |
951 | index = (tx_queue >> 1); | |
952 | ivar = array_er32(IVAR0, index); | |
953 | if (tx_queue & 0x1) { | |
954 | /* vector goes into high byte of register */ | |
955 | ivar = ivar & 0x00FFFFFF; | |
956 | ivar |= (msix_vector | E1000_IVAR_VALID) << 24; | |
957 | } else { | |
958 | /* vector goes into second byte of register */ | |
959 | ivar = ivar & 0xFFFF00FF; | |
960 | ivar |= (msix_vector | E1000_IVAR_VALID) << 8; | |
961 | } | |
0ed2dbf4 | 962 | adapter->tx_ring[tx_queue].eims_value = BIT(msix_vector); |
d4e0fe01 AD |
963 | array_ew32(IVAR0, index, ivar); |
964 | } | |
965 | } | |
966 | ||
967 | /** | |
968 | * igbvf_configure_msix - Configure MSI-X hardware | |
0340501b | 969 | * @adapter: board private structure |
d4e0fe01 AD |
970 | * |
971 | * igbvf_configure_msix sets up the hardware to properly | |
972 | * generate MSI-X interrupts. | |
973 | **/ | |
974 | static void igbvf_configure_msix(struct igbvf_adapter *adapter) | |
975 | { | |
976 | u32 tmp; | |
977 | struct e1000_hw *hw = &adapter->hw; | |
978 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
979 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
980 | int vector = 0; | |
981 | ||
982 | adapter->eims_enable_mask = 0; | |
983 | ||
984 | igbvf_assign_vector(adapter, IGBVF_NO_QUEUE, 0, vector++); | |
985 | adapter->eims_enable_mask |= tx_ring->eims_value; | |
ab50a2a4 | 986 | writel(tx_ring->itr_val, hw->hw_addr + tx_ring->itr_register); |
d4e0fe01 AD |
987 | igbvf_assign_vector(adapter, 0, IGBVF_NO_QUEUE, vector++); |
988 | adapter->eims_enable_mask |= rx_ring->eims_value; | |
ab50a2a4 | 989 | writel(rx_ring->itr_val, hw->hw_addr + rx_ring->itr_register); |
d4e0fe01 AD |
990 | |
991 | /* set vector for other causes, i.e. link changes */ | |
992 | ||
993 | tmp = (vector++ | E1000_IVAR_VALID); | |
994 | ||
995 | ew32(IVAR_MISC, tmp); | |
996 | ||
0ed2dbf4 JK |
997 | adapter->eims_enable_mask = GENMASK(vector - 1, 0); |
998 | adapter->eims_other = BIT(vector - 1); | |
d4e0fe01 AD |
999 | e1e_flush(); |
1000 | } | |
1001 | ||
2d165771 | 1002 | static void igbvf_reset_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1003 | { |
1004 | if (adapter->msix_entries) { | |
1005 | pci_disable_msix(adapter->pdev); | |
1006 | kfree(adapter->msix_entries); | |
1007 | adapter->msix_entries = NULL; | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | /** | |
1012 | * igbvf_set_interrupt_capability - set MSI or MSI-X if supported | |
0340501b | 1013 | * @adapter: board private structure |
d4e0fe01 AD |
1014 | * |
1015 | * Attempt to configure interrupts using the best available | |
1016 | * capabilities of the hardware and kernel. | |
1017 | **/ | |
2d165771 | 1018 | static void igbvf_set_interrupt_capability(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1019 | { |
1020 | int err = -ENOMEM; | |
1021 | int i; | |
1022 | ||
0340501b | 1023 | /* we allocate 3 vectors, 1 for Tx, 1 for Rx, one for PF messages */ |
d4e0fe01 | 1024 | adapter->msix_entries = kcalloc(3, sizeof(struct msix_entry), |
0340501b | 1025 | GFP_KERNEL); |
d4e0fe01 AD |
1026 | if (adapter->msix_entries) { |
1027 | for (i = 0; i < 3; i++) | |
1028 | adapter->msix_entries[i].entry = i; | |
1029 | ||
4601e759 | 1030 | err = pci_enable_msix_range(adapter->pdev, |
0340501b | 1031 | adapter->msix_entries, 3, 3); |
d4e0fe01 AD |
1032 | } |
1033 | ||
4601e759 | 1034 | if (err < 0) { |
d4e0fe01 AD |
1035 | /* MSI-X failed */ |
1036 | dev_err(&adapter->pdev->dev, | |
0340501b | 1037 | "Failed to initialize MSI-X interrupts.\n"); |
d4e0fe01 AD |
1038 | igbvf_reset_interrupt_capability(adapter); |
1039 | } | |
1040 | } | |
1041 | ||
1042 | /** | |
1043 | * igbvf_request_msix - Initialize MSI-X interrupts | |
0340501b | 1044 | * @adapter: board private structure |
d4e0fe01 AD |
1045 | * |
1046 | * igbvf_request_msix allocates MSI-X vectors and requests interrupts from the | |
1047 | * kernel. | |
1048 | **/ | |
1049 | static int igbvf_request_msix(struct igbvf_adapter *adapter) | |
1050 | { | |
1051 | struct net_device *netdev = adapter->netdev; | |
1052 | int err = 0, vector = 0; | |
1053 | ||
1054 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) { | |
1055 | sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name); | |
1056 | sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name); | |
1057 | } else { | |
1058 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
1059 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
1060 | } | |
1061 | ||
1062 | err = request_irq(adapter->msix_entries[vector].vector, | |
0340501b JK |
1063 | igbvf_intr_msix_tx, 0, adapter->tx_ring->name, |
1064 | netdev); | |
d4e0fe01 AD |
1065 | if (err) |
1066 | goto out; | |
1067 | ||
1068 | adapter->tx_ring->itr_register = E1000_EITR(vector); | |
ab50a2a4 | 1069 | adapter->tx_ring->itr_val = adapter->current_itr; |
d4e0fe01 AD |
1070 | vector++; |
1071 | ||
1072 | err = request_irq(adapter->msix_entries[vector].vector, | |
0340501b JK |
1073 | igbvf_intr_msix_rx, 0, adapter->rx_ring->name, |
1074 | netdev); | |
d4e0fe01 | 1075 | if (err) |
85eb39bb | 1076 | goto free_irq_tx; |
d4e0fe01 AD |
1077 | |
1078 | adapter->rx_ring->itr_register = E1000_EITR(vector); | |
ab50a2a4 | 1079 | adapter->rx_ring->itr_val = adapter->current_itr; |
d4e0fe01 AD |
1080 | vector++; |
1081 | ||
1082 | err = request_irq(adapter->msix_entries[vector].vector, | |
0340501b | 1083 | igbvf_msix_other, 0, netdev->name, netdev); |
d4e0fe01 | 1084 | if (err) |
85eb39bb | 1085 | goto free_irq_rx; |
d4e0fe01 AD |
1086 | |
1087 | igbvf_configure_msix(adapter); | |
1088 | return 0; | |
85eb39bb GC |
1089 | free_irq_rx: |
1090 | free_irq(adapter->msix_entries[--vector].vector, netdev); | |
1091 | free_irq_tx: | |
1092 | free_irq(adapter->msix_entries[--vector].vector, netdev); | |
d4e0fe01 AD |
1093 | out: |
1094 | return err; | |
1095 | } | |
1096 | ||
1097 | /** | |
1098 | * igbvf_alloc_queues - Allocate memory for all rings | |
1099 | * @adapter: board private structure to initialize | |
1100 | **/ | |
9f9a12f8 | 1101 | static int igbvf_alloc_queues(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1102 | { |
1103 | struct net_device *netdev = adapter->netdev; | |
1104 | ||
1105 | adapter->tx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1106 | if (!adapter->tx_ring) | |
1107 | return -ENOMEM; | |
1108 | ||
1109 | adapter->rx_ring = kzalloc(sizeof(struct igbvf_ring), GFP_KERNEL); | |
1110 | if (!adapter->rx_ring) { | |
1111 | kfree(adapter->tx_ring); | |
1112 | return -ENOMEM; | |
1113 | } | |
1114 | ||
b48b89f9 | 1115 | netif_napi_add(netdev, &adapter->rx_ring->napi, igbvf_poll); |
d4e0fe01 AD |
1116 | |
1117 | return 0; | |
1118 | } | |
1119 | ||
1120 | /** | |
1121 | * igbvf_request_irq - initialize interrupts | |
0340501b | 1122 | * @adapter: board private structure |
d4e0fe01 AD |
1123 | * |
1124 | * Attempts to configure interrupts using the best available | |
1125 | * capabilities of the hardware and kernel. | |
1126 | **/ | |
1127 | static int igbvf_request_irq(struct igbvf_adapter *adapter) | |
1128 | { | |
1129 | int err = -1; | |
1130 | ||
1131 | /* igbvf supports msi-x only */ | |
1132 | if (adapter->msix_entries) | |
1133 | err = igbvf_request_msix(adapter); | |
1134 | ||
1135 | if (!err) | |
1136 | return err; | |
1137 | ||
1138 | dev_err(&adapter->pdev->dev, | |
0340501b | 1139 | "Unable to allocate interrupt, Error: %d\n", err); |
d4e0fe01 AD |
1140 | |
1141 | return err; | |
1142 | } | |
1143 | ||
1144 | static void igbvf_free_irq(struct igbvf_adapter *adapter) | |
1145 | { | |
1146 | struct net_device *netdev = adapter->netdev; | |
1147 | int vector; | |
1148 | ||
1149 | if (adapter->msix_entries) { | |
1150 | for (vector = 0; vector < 3; vector++) | |
1151 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1152 | } | |
1153 | } | |
1154 | ||
1155 | /** | |
1156 | * igbvf_irq_disable - Mask off interrupt generation on the NIC | |
0340501b | 1157 | * @adapter: board private structure |
d4e0fe01 AD |
1158 | **/ |
1159 | static void igbvf_irq_disable(struct igbvf_adapter *adapter) | |
1160 | { | |
1161 | struct e1000_hw *hw = &adapter->hw; | |
1162 | ||
1163 | ew32(EIMC, ~0); | |
1164 | ||
1165 | if (adapter->msix_entries) | |
1166 | ew32(EIAC, 0); | |
1167 | } | |
1168 | ||
1169 | /** | |
1170 | * igbvf_irq_enable - Enable default interrupt generation settings | |
0340501b | 1171 | * @adapter: board private structure |
d4e0fe01 AD |
1172 | **/ |
1173 | static void igbvf_irq_enable(struct igbvf_adapter *adapter) | |
1174 | { | |
1175 | struct e1000_hw *hw = &adapter->hw; | |
1176 | ||
1177 | ew32(EIAC, adapter->eims_enable_mask); | |
1178 | ew32(EIAM, adapter->eims_enable_mask); | |
1179 | ew32(EIMS, adapter->eims_enable_mask); | |
1180 | } | |
1181 | ||
1182 | /** | |
1183 | * igbvf_poll - NAPI Rx polling callback | |
1184 | * @napi: struct associated with this polling callback | |
1185 | * @budget: amount of packets driver is allowed to process this poll | |
1186 | **/ | |
1187 | static int igbvf_poll(struct napi_struct *napi, int budget) | |
1188 | { | |
1189 | struct igbvf_ring *rx_ring = container_of(napi, struct igbvf_ring, napi); | |
1190 | struct igbvf_adapter *adapter = rx_ring->adapter; | |
1191 | struct e1000_hw *hw = &adapter->hw; | |
1192 | int work_done = 0; | |
1193 | ||
1194 | igbvf_clean_rx_irq(adapter, &work_done, budget); | |
1195 | ||
0bcd952f JB |
1196 | if (work_done == budget) |
1197 | return budget; | |
d4e0fe01 | 1198 | |
0bcd952f JB |
1199 | /* Exit the polling mode, but don't re-enable interrupts if stack might |
1200 | * poll us due to busy-polling | |
1201 | */ | |
1202 | if (likely(napi_complete_done(napi, work_done))) { | |
ab50a2a4 | 1203 | if (adapter->requested_itr & 3) |
d4e0fe01 AD |
1204 | igbvf_set_itr(adapter); |
1205 | ||
1206 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1207 | ew32(EIMS, adapter->rx_ring->eims_value); | |
1208 | } | |
1209 | ||
1210 | return work_done; | |
1211 | } | |
1212 | ||
1213 | /** | |
1214 | * igbvf_set_rlpml - set receive large packet maximum length | |
1215 | * @adapter: board private structure | |
1216 | * | |
1217 | * Configure the maximum size of packets that will be received | |
1218 | */ | |
1219 | static void igbvf_set_rlpml(struct igbvf_adapter *adapter) | |
1220 | { | |
a0f1d603 | 1221 | int max_frame_size; |
d4e0fe01 AD |
1222 | struct e1000_hw *hw = &adapter->hw; |
1223 | ||
a0f1d603 | 1224 | max_frame_size = adapter->max_frame_size + VLAN_TAG_SIZE; |
32652c2a GE |
1225 | |
1226 | spin_lock_bh(&hw->mbx_lock); | |
1227 | ||
d4e0fe01 | 1228 | e1000_rlpml_set_vf(hw, max_frame_size); |
32652c2a GE |
1229 | |
1230 | spin_unlock_bh(&hw->mbx_lock); | |
d4e0fe01 AD |
1231 | } |
1232 | ||
80d5c368 PM |
1233 | static int igbvf_vlan_rx_add_vid(struct net_device *netdev, |
1234 | __be16 proto, u16 vid) | |
d4e0fe01 AD |
1235 | { |
1236 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1237 | struct e1000_hw *hw = &adapter->hw; | |
1238 | ||
32652c2a GE |
1239 | spin_lock_bh(&hw->mbx_lock); |
1240 | ||
8e586137 | 1241 | if (hw->mac.ops.set_vfta(hw, vid, true)) { |
24453a84 | 1242 | dev_warn(&adapter->pdev->dev, "Vlan id %d\n is not added", vid); |
32652c2a | 1243 | spin_unlock_bh(&hw->mbx_lock); |
8e586137 JP |
1244 | return -EINVAL; |
1245 | } | |
32652c2a GE |
1246 | |
1247 | spin_unlock_bh(&hw->mbx_lock); | |
1248 | ||
8e586137 JP |
1249 | set_bit(vid, adapter->active_vlans); |
1250 | return 0; | |
d4e0fe01 AD |
1251 | } |
1252 | ||
80d5c368 PM |
1253 | static int igbvf_vlan_rx_kill_vid(struct net_device *netdev, |
1254 | __be16 proto, u16 vid) | |
d4e0fe01 AD |
1255 | { |
1256 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1257 | struct e1000_hw *hw = &adapter->hw; | |
1258 | ||
32652c2a GE |
1259 | spin_lock_bh(&hw->mbx_lock); |
1260 | ||
8e586137 | 1261 | if (hw->mac.ops.set_vfta(hw, vid, false)) { |
d4e0fe01 | 1262 | dev_err(&adapter->pdev->dev, |
0340501b | 1263 | "Failed to remove vlan id %d\n", vid); |
32652c2a | 1264 | spin_unlock_bh(&hw->mbx_lock); |
8e586137 JP |
1265 | return -EINVAL; |
1266 | } | |
32652c2a GE |
1267 | |
1268 | spin_unlock_bh(&hw->mbx_lock); | |
1269 | ||
8e586137 JP |
1270 | clear_bit(vid, adapter->active_vlans); |
1271 | return 0; | |
d4e0fe01 AD |
1272 | } |
1273 | ||
1274 | static void igbvf_restore_vlan(struct igbvf_adapter *adapter) | |
1275 | { | |
1276 | u16 vid; | |
1277 | ||
a0f1d603 | 1278 | for_each_set_bit(vid, adapter->active_vlans, VLAN_N_VID) |
80d5c368 | 1279 | igbvf_vlan_rx_add_vid(adapter->netdev, htons(ETH_P_8021Q), vid); |
d4e0fe01 AD |
1280 | } |
1281 | ||
1282 | /** | |
1283 | * igbvf_configure_tx - Configure Transmit Unit after Reset | |
1284 | * @adapter: board private structure | |
1285 | * | |
1286 | * Configure the Tx unit of the MAC after a reset. | |
1287 | **/ | |
1288 | static void igbvf_configure_tx(struct igbvf_adapter *adapter) | |
1289 | { | |
1290 | struct e1000_hw *hw = &adapter->hw; | |
1291 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1292 | u64 tdba; | |
1293 | u32 txdctl, dca_txctrl; | |
1294 | ||
1295 | /* disable transmits */ | |
1296 | txdctl = er32(TXDCTL(0)); | |
1297 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
945a5151 | 1298 | e1e_flush(); |
d4e0fe01 AD |
1299 | msleep(10); |
1300 | ||
1301 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
1302 | ew32(TDLEN(0), tx_ring->count * sizeof(union e1000_adv_tx_desc)); | |
1303 | tdba = tx_ring->dma; | |
8e20ce94 | 1304 | ew32(TDBAL(0), (tdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1305 | ew32(TDBAH(0), (tdba >> 32)); |
1306 | ew32(TDH(0), 0); | |
1307 | ew32(TDT(0), 0); | |
1308 | tx_ring->head = E1000_TDH(0); | |
1309 | tx_ring->tail = E1000_TDT(0); | |
1310 | ||
1311 | /* Turn off Relaxed Ordering on head write-backs. The writebacks | |
1312 | * MUST be delivered in order or it will completely screw up | |
0340501b | 1313 | * our bookkeeping. |
d4e0fe01 AD |
1314 | */ |
1315 | dca_txctrl = er32(DCA_TXCTRL(0)); | |
1316 | dca_txctrl &= ~E1000_DCA_TXCTRL_TX_WB_RO_EN; | |
1317 | ew32(DCA_TXCTRL(0), dca_txctrl); | |
1318 | ||
1319 | /* enable transmits */ | |
1320 | txdctl |= E1000_TXDCTL_QUEUE_ENABLE; | |
1321 | ew32(TXDCTL(0), txdctl); | |
1322 | ||
1323 | /* Setup Transmit Descriptor Settings for eop descriptor */ | |
1324 | adapter->txd_cmd = E1000_ADVTXD_DCMD_EOP | E1000_ADVTXD_DCMD_IFCS; | |
1325 | ||
1326 | /* enable Report Status bit */ | |
1327 | adapter->txd_cmd |= E1000_ADVTXD_DCMD_RS; | |
d4e0fe01 AD |
1328 | } |
1329 | ||
1330 | /** | |
1331 | * igbvf_setup_srrctl - configure the receive control registers | |
1332 | * @adapter: Board private structure | |
1333 | **/ | |
1334 | static void igbvf_setup_srrctl(struct igbvf_adapter *adapter) | |
1335 | { | |
1336 | struct e1000_hw *hw = &adapter->hw; | |
1337 | u32 srrctl = 0; | |
1338 | ||
1339 | srrctl &= ~(E1000_SRRCTL_DESCTYPE_MASK | | |
0340501b JK |
1340 | E1000_SRRCTL_BSIZEHDR_MASK | |
1341 | E1000_SRRCTL_BSIZEPKT_MASK); | |
d4e0fe01 AD |
1342 | |
1343 | /* Enable queue drop to avoid head of line blocking */ | |
1344 | srrctl |= E1000_SRRCTL_DROP_EN; | |
1345 | ||
1346 | /* Setup buffer sizes */ | |
1347 | srrctl |= ALIGN(adapter->rx_buffer_len, 1024) >> | |
0340501b | 1348 | E1000_SRRCTL_BSIZEPKT_SHIFT; |
d4e0fe01 AD |
1349 | |
1350 | if (adapter->rx_buffer_len < 2048) { | |
1351 | adapter->rx_ps_hdr_size = 0; | |
1352 | srrctl |= E1000_SRRCTL_DESCTYPE_ADV_ONEBUF; | |
1353 | } else { | |
1354 | adapter->rx_ps_hdr_size = 128; | |
1355 | srrctl |= adapter->rx_ps_hdr_size << | |
0340501b | 1356 | E1000_SRRCTL_BSIZEHDRSIZE_SHIFT; |
d4e0fe01 AD |
1357 | srrctl |= E1000_SRRCTL_DESCTYPE_HDR_SPLIT_ALWAYS; |
1358 | } | |
1359 | ||
1360 | ew32(SRRCTL(0), srrctl); | |
1361 | } | |
1362 | ||
1363 | /** | |
1364 | * igbvf_configure_rx - Configure Receive Unit after Reset | |
1365 | * @adapter: board private structure | |
1366 | * | |
1367 | * Configure the Rx unit of the MAC after a reset. | |
1368 | **/ | |
1369 | static void igbvf_configure_rx(struct igbvf_adapter *adapter) | |
1370 | { | |
1371 | struct e1000_hw *hw = &adapter->hw; | |
1372 | struct igbvf_ring *rx_ring = adapter->rx_ring; | |
1373 | u64 rdba; | |
12b28b41 | 1374 | u32 rxdctl; |
d4e0fe01 AD |
1375 | |
1376 | /* disable receives */ | |
1377 | rxdctl = er32(RXDCTL(0)); | |
1378 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
945a5151 | 1379 | e1e_flush(); |
d4e0fe01 AD |
1380 | msleep(10); |
1381 | ||
0340501b | 1382 | /* Setup the HW Rx Head and Tail Descriptor Pointers and |
d4e0fe01 AD |
1383 | * the Base and Length of the Rx Descriptor Ring |
1384 | */ | |
1385 | rdba = rx_ring->dma; | |
8e20ce94 | 1386 | ew32(RDBAL(0), (rdba & DMA_BIT_MASK(32))); |
d4e0fe01 AD |
1387 | ew32(RDBAH(0), (rdba >> 32)); |
1388 | ew32(RDLEN(0), rx_ring->count * sizeof(union e1000_adv_rx_desc)); | |
1389 | rx_ring->head = E1000_RDH(0); | |
1390 | rx_ring->tail = E1000_RDT(0); | |
1391 | ew32(RDH(0), 0); | |
1392 | ew32(RDT(0), 0); | |
1393 | ||
1394 | rxdctl |= E1000_RXDCTL_QUEUE_ENABLE; | |
1395 | rxdctl &= 0xFFF00000; | |
1396 | rxdctl |= IGBVF_RX_PTHRESH; | |
1397 | rxdctl |= IGBVF_RX_HTHRESH << 8; | |
1398 | rxdctl |= IGBVF_RX_WTHRESH << 16; | |
1399 | ||
1400 | igbvf_set_rlpml(adapter); | |
1401 | ||
1402 | /* enable receives */ | |
1403 | ew32(RXDCTL(0), rxdctl); | |
1404 | } | |
1405 | ||
1406 | /** | |
1407 | * igbvf_set_multi - Multicast and Promiscuous mode set | |
1408 | * @netdev: network interface device structure | |
1409 | * | |
1410 | * The set_multi entry point is called whenever the multicast address | |
1411 | * list or the network interface flags are updated. This routine is | |
1412 | * responsible for configuring the hardware for proper multicast, | |
1413 | * promiscuous mode, and all-multi behavior. | |
1414 | **/ | |
1415 | static void igbvf_set_multi(struct net_device *netdev) | |
1416 | { | |
1417 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1418 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 1419 | struct netdev_hw_addr *ha; |
d4e0fe01 AD |
1420 | u8 *mta_list = NULL; |
1421 | int i; | |
1422 | ||
4cd24eaf | 1423 | if (!netdev_mc_empty(netdev)) { |
b2adaca9 JP |
1424 | mta_list = kmalloc_array(netdev_mc_count(netdev), ETH_ALEN, |
1425 | GFP_ATOMIC); | |
1426 | if (!mta_list) | |
d4e0fe01 | 1427 | return; |
d4e0fe01 AD |
1428 | } |
1429 | ||
1430 | /* prepare a packed array of only addresses. */ | |
48e2f183 | 1431 | i = 0; |
22bedad3 JP |
1432 | netdev_for_each_mc_addr(ha, netdev) |
1433 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
d4e0fe01 | 1434 | |
32652c2a GE |
1435 | spin_lock_bh(&hw->mbx_lock); |
1436 | ||
d4e0fe01 | 1437 | hw->mac.ops.update_mc_addr_list(hw, mta_list, i, 0, 0); |
32652c2a GE |
1438 | |
1439 | spin_unlock_bh(&hw->mbx_lock); | |
d4e0fe01 AD |
1440 | kfree(mta_list); |
1441 | } | |
1442 | ||
4827cc37 YK |
1443 | /** |
1444 | * igbvf_set_uni - Configure unicast MAC filters | |
1445 | * @netdev: network interface device structure | |
1446 | * | |
1447 | * This routine is responsible for configuring the hardware for proper | |
1448 | * unicast filters. | |
1449 | **/ | |
1450 | static int igbvf_set_uni(struct net_device *netdev) | |
1451 | { | |
1452 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1453 | struct e1000_hw *hw = &adapter->hw; | |
1454 | ||
1455 | if (netdev_uc_count(netdev) > IGBVF_MAX_MAC_FILTERS) { | |
1456 | pr_err("Too many unicast filters - No Space\n"); | |
1457 | return -ENOSPC; | |
1458 | } | |
1459 | ||
32652c2a GE |
1460 | spin_lock_bh(&hw->mbx_lock); |
1461 | ||
4827cc37 YK |
1462 | /* Clear all unicast MAC filters */ |
1463 | hw->mac.ops.set_uc_addr(hw, E1000_VF_MAC_FILTER_CLR, NULL); | |
1464 | ||
32652c2a GE |
1465 | spin_unlock_bh(&hw->mbx_lock); |
1466 | ||
4827cc37 YK |
1467 | if (!netdev_uc_empty(netdev)) { |
1468 | struct netdev_hw_addr *ha; | |
1469 | ||
1470 | /* Add MAC filters one by one */ | |
1471 | netdev_for_each_uc_addr(ha, netdev) { | |
32652c2a GE |
1472 | spin_lock_bh(&hw->mbx_lock); |
1473 | ||
4827cc37 YK |
1474 | hw->mac.ops.set_uc_addr(hw, E1000_VF_MAC_FILTER_ADD, |
1475 | ha->addr); | |
32652c2a GE |
1476 | |
1477 | spin_unlock_bh(&hw->mbx_lock); | |
4827cc37 YK |
1478 | udelay(200); |
1479 | } | |
1480 | } | |
1481 | ||
1482 | return 0; | |
1483 | } | |
1484 | ||
1485 | static void igbvf_set_rx_mode(struct net_device *netdev) | |
1486 | { | |
1487 | igbvf_set_multi(netdev); | |
1488 | igbvf_set_uni(netdev); | |
1489 | } | |
1490 | ||
d4e0fe01 AD |
1491 | /** |
1492 | * igbvf_configure - configure the hardware for Rx and Tx | |
1493 | * @adapter: private board structure | |
1494 | **/ | |
1495 | static void igbvf_configure(struct igbvf_adapter *adapter) | |
1496 | { | |
4827cc37 | 1497 | igbvf_set_rx_mode(adapter->netdev); |
d4e0fe01 AD |
1498 | |
1499 | igbvf_restore_vlan(adapter); | |
1500 | ||
1501 | igbvf_configure_tx(adapter); | |
1502 | igbvf_setup_srrctl(adapter); | |
1503 | igbvf_configure_rx(adapter); | |
1504 | igbvf_alloc_rx_buffers(adapter->rx_ring, | |
0340501b | 1505 | igbvf_desc_unused(adapter->rx_ring)); |
d4e0fe01 AD |
1506 | } |
1507 | ||
1508 | /* igbvf_reset - bring the hardware into a known good state | |
0340501b | 1509 | * @adapter: private board structure |
d4e0fe01 AD |
1510 | * |
1511 | * This function boots the hardware and enables some settings that | |
1512 | * require a configuration cycle of the hardware - those cannot be | |
1513 | * set/changed during runtime. After reset the device needs to be | |
1514 | * properly configured for Rx, Tx etc. | |
1515 | */ | |
2d165771 | 1516 | static void igbvf_reset(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1517 | { |
1518 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1519 | struct net_device *netdev = adapter->netdev; | |
1520 | struct e1000_hw *hw = &adapter->hw; | |
1521 | ||
32652c2a GE |
1522 | spin_lock_bh(&hw->mbx_lock); |
1523 | ||
d4e0fe01 AD |
1524 | /* Allow time for pending master requests to run */ |
1525 | if (mac->ops.reset_hw(hw)) | |
630f6edc | 1526 | dev_info(&adapter->pdev->dev, "PF still resetting\n"); |
d4e0fe01 AD |
1527 | |
1528 | mac->ops.init_hw(hw); | |
1529 | ||
32652c2a GE |
1530 | spin_unlock_bh(&hw->mbx_lock); |
1531 | ||
d4e0fe01 | 1532 | if (is_valid_ether_addr(adapter->hw.mac.addr)) { |
a05e4c0a | 1533 | eth_hw_addr_set(netdev, adapter->hw.mac.addr); |
d4e0fe01 AD |
1534 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, |
1535 | netdev->addr_len); | |
1536 | } | |
72279093 AD |
1537 | |
1538 | adapter->last_reset = jiffies; | |
d4e0fe01 AD |
1539 | } |
1540 | ||
1541 | int igbvf_up(struct igbvf_adapter *adapter) | |
1542 | { | |
1543 | struct e1000_hw *hw = &adapter->hw; | |
1544 | ||
1545 | /* hardware has been reset, we need to reload some things */ | |
1546 | igbvf_configure(adapter); | |
1547 | ||
1548 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1549 | ||
1550 | napi_enable(&adapter->rx_ring->napi); | |
1551 | if (adapter->msix_entries) | |
1552 | igbvf_configure_msix(adapter); | |
1553 | ||
1554 | /* Clear any pending interrupts. */ | |
1555 | er32(EICR); | |
1556 | igbvf_irq_enable(adapter); | |
1557 | ||
1558 | /* start the watchdog */ | |
1559 | hw->mac.get_link_status = 1; | |
1560 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1561 | ||
d4e0fe01 AD |
1562 | return 0; |
1563 | } | |
1564 | ||
1565 | void igbvf_down(struct igbvf_adapter *adapter) | |
1566 | { | |
1567 | struct net_device *netdev = adapter->netdev; | |
1568 | struct e1000_hw *hw = &adapter->hw; | |
1569 | u32 rxdctl, txdctl; | |
1570 | ||
0340501b | 1571 | /* signal that we're down so the interrupt handler does not |
d4e0fe01 AD |
1572 | * reschedule our watchdog timer |
1573 | */ | |
1574 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1575 | ||
1576 | /* disable receives in the hardware */ | |
1577 | rxdctl = er32(RXDCTL(0)); | |
1578 | ew32(RXDCTL(0), rxdctl & ~E1000_RXDCTL_QUEUE_ENABLE); | |
1579 | ||
784401bf | 1580 | netif_carrier_off(netdev); |
d4e0fe01 AD |
1581 | netif_stop_queue(netdev); |
1582 | ||
1583 | /* disable transmits in the hardware */ | |
1584 | txdctl = er32(TXDCTL(0)); | |
1585 | ew32(TXDCTL(0), txdctl & ~E1000_TXDCTL_QUEUE_ENABLE); | |
1586 | ||
1587 | /* flush both disables and wait for them to finish */ | |
1588 | e1e_flush(); | |
1589 | msleep(10); | |
1590 | ||
1591 | napi_disable(&adapter->rx_ring->napi); | |
1592 | ||
1593 | igbvf_irq_disable(adapter); | |
1594 | ||
1595 | del_timer_sync(&adapter->watchdog_timer); | |
1596 | ||
d4e0fe01 AD |
1597 | /* record the stats before reset*/ |
1598 | igbvf_update_stats(adapter); | |
1599 | ||
1600 | adapter->link_speed = 0; | |
1601 | adapter->link_duplex = 0; | |
1602 | ||
1603 | igbvf_reset(adapter); | |
1604 | igbvf_clean_tx_ring(adapter->tx_ring); | |
1605 | igbvf_clean_rx_ring(adapter->rx_ring); | |
1606 | } | |
1607 | ||
1608 | void igbvf_reinit_locked(struct igbvf_adapter *adapter) | |
1609 | { | |
1610 | might_sleep(); | |
1611 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
5beef769 | 1612 | usleep_range(1000, 2000); |
d4e0fe01 AD |
1613 | igbvf_down(adapter); |
1614 | igbvf_up(adapter); | |
1615 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
1616 | } | |
1617 | ||
1618 | /** | |
1619 | * igbvf_sw_init - Initialize general software structures (struct igbvf_adapter) | |
1620 | * @adapter: board private structure to initialize | |
1621 | * | |
1622 | * igbvf_sw_init initializes the Adapter private data structure. | |
1623 | * Fields are initialized based on PCI device information and | |
1624 | * OS network device settings (MTU size). | |
1625 | **/ | |
9f9a12f8 | 1626 | static int igbvf_sw_init(struct igbvf_adapter *adapter) |
d4e0fe01 AD |
1627 | { |
1628 | struct net_device *netdev = adapter->netdev; | |
1629 | s32 rc; | |
1630 | ||
1631 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
1632 | adapter->rx_ps_hdr_size = 0; | |
1633 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; | |
1634 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
1635 | ||
1636 | adapter->tx_int_delay = 8; | |
1637 | adapter->tx_abs_int_delay = 32; | |
1638 | adapter->rx_int_delay = 0; | |
1639 | adapter->rx_abs_int_delay = 8; | |
ab50a2a4 MW |
1640 | adapter->requested_itr = 3; |
1641 | adapter->current_itr = IGBVF_START_ITR; | |
d4e0fe01 AD |
1642 | |
1643 | /* Set various function pointers */ | |
1644 | adapter->ei->init_ops(&adapter->hw); | |
1645 | ||
1646 | rc = adapter->hw.mac.ops.init_params(&adapter->hw); | |
1647 | if (rc) | |
1648 | return rc; | |
1649 | ||
1650 | rc = adapter->hw.mbx.ops.init_params(&adapter->hw); | |
1651 | if (rc) | |
1652 | return rc; | |
1653 | ||
1654 | igbvf_set_interrupt_capability(adapter); | |
1655 | ||
1656 | if (igbvf_alloc_queues(adapter)) | |
1657 | return -ENOMEM; | |
1658 | ||
1659 | spin_lock_init(&adapter->tx_queue_lock); | |
1660 | ||
1661 | /* Explicitly disable IRQ since the NIC can be in any state. */ | |
1662 | igbvf_irq_disable(adapter); | |
1663 | ||
1664 | spin_lock_init(&adapter->stats_lock); | |
32652c2a | 1665 | spin_lock_init(&adapter->hw.mbx_lock); |
d4e0fe01 AD |
1666 | |
1667 | set_bit(__IGBVF_DOWN, &adapter->state); | |
1668 | return 0; | |
1669 | } | |
1670 | ||
1671 | static void igbvf_initialize_last_counter_stats(struct igbvf_adapter *adapter) | |
1672 | { | |
1673 | struct e1000_hw *hw = &adapter->hw; | |
1674 | ||
1675 | adapter->stats.last_gprc = er32(VFGPRC); | |
1676 | adapter->stats.last_gorc = er32(VFGORC); | |
1677 | adapter->stats.last_gptc = er32(VFGPTC); | |
1678 | adapter->stats.last_gotc = er32(VFGOTC); | |
1679 | adapter->stats.last_mprc = er32(VFMPRC); | |
1680 | adapter->stats.last_gotlbc = er32(VFGOTLBC); | |
1681 | adapter->stats.last_gptlbc = er32(VFGPTLBC); | |
1682 | adapter->stats.last_gorlbc = er32(VFGORLBC); | |
1683 | adapter->stats.last_gprlbc = er32(VFGPRLBC); | |
1684 | ||
1685 | adapter->stats.base_gprc = er32(VFGPRC); | |
1686 | adapter->stats.base_gorc = er32(VFGORC); | |
1687 | adapter->stats.base_gptc = er32(VFGPTC); | |
1688 | adapter->stats.base_gotc = er32(VFGOTC); | |
1689 | adapter->stats.base_mprc = er32(VFMPRC); | |
1690 | adapter->stats.base_gotlbc = er32(VFGOTLBC); | |
1691 | adapter->stats.base_gptlbc = er32(VFGPTLBC); | |
1692 | adapter->stats.base_gorlbc = er32(VFGORLBC); | |
1693 | adapter->stats.base_gprlbc = er32(VFGPRLBC); | |
1694 | } | |
1695 | ||
1696 | /** | |
1697 | * igbvf_open - Called when a network interface is made active | |
1698 | * @netdev: network interface device structure | |
1699 | * | |
1700 | * Returns 0 on success, negative value on failure | |
1701 | * | |
1702 | * The open entry point is called when a network interface is made | |
1703 | * active by the system (IFF_UP). At this point all resources needed | |
1704 | * for transmit and receive operations are allocated, the interrupt | |
1705 | * handler is registered with the OS, the watchdog timer is started, | |
1706 | * and the stack is notified that the interface is ready. | |
1707 | **/ | |
1708 | static int igbvf_open(struct net_device *netdev) | |
1709 | { | |
1710 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1711 | struct e1000_hw *hw = &adapter->hw; | |
1712 | int err; | |
1713 | ||
1714 | /* disallow open during test */ | |
1715 | if (test_bit(__IGBVF_TESTING, &adapter->state)) | |
1716 | return -EBUSY; | |
1717 | ||
1718 | /* allocate transmit descriptors */ | |
1719 | err = igbvf_setup_tx_resources(adapter, adapter->tx_ring); | |
1720 | if (err) | |
1721 | goto err_setup_tx; | |
1722 | ||
1723 | /* allocate receive descriptors */ | |
1724 | err = igbvf_setup_rx_resources(adapter, adapter->rx_ring); | |
1725 | if (err) | |
1726 | goto err_setup_rx; | |
1727 | ||
0340501b | 1728 | /* before we allocate an interrupt, we must be ready to handle it. |
d4e0fe01 AD |
1729 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
1730 | * as soon as we call pci_request_irq, so we have to setup our | |
1731 | * clean_rx handler before we do so. | |
1732 | */ | |
1733 | igbvf_configure(adapter); | |
1734 | ||
1735 | err = igbvf_request_irq(adapter); | |
1736 | if (err) | |
1737 | goto err_req_irq; | |
1738 | ||
1739 | /* From here on the code is the same as igbvf_up() */ | |
1740 | clear_bit(__IGBVF_DOWN, &adapter->state); | |
1741 | ||
1742 | napi_enable(&adapter->rx_ring->napi); | |
1743 | ||
1744 | /* clear any pending interrupts */ | |
1745 | er32(EICR); | |
1746 | ||
1747 | igbvf_irq_enable(adapter); | |
1748 | ||
1749 | /* start the watchdog */ | |
1750 | hw->mac.get_link_status = 1; | |
1751 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1752 | ||
1753 | return 0; | |
1754 | ||
1755 | err_req_irq: | |
1756 | igbvf_free_rx_resources(adapter->rx_ring); | |
1757 | err_setup_rx: | |
1758 | igbvf_free_tx_resources(adapter->tx_ring); | |
1759 | err_setup_tx: | |
1760 | igbvf_reset(adapter); | |
1761 | ||
1762 | return err; | |
1763 | } | |
1764 | ||
1765 | /** | |
1766 | * igbvf_close - Disables a network interface | |
1767 | * @netdev: network interface device structure | |
1768 | * | |
1769 | * Returns 0, this is not allowed to fail | |
1770 | * | |
1771 | * The close entry point is called when an interface is de-activated | |
1772 | * by the OS. The hardware is still under the drivers control, but | |
1773 | * needs to be disabled. A global MAC reset is issued to stop the | |
1774 | * hardware, and all transmit and receive resources are freed. | |
1775 | **/ | |
1776 | static int igbvf_close(struct net_device *netdev) | |
1777 | { | |
1778 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1779 | ||
1780 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
1781 | igbvf_down(adapter); | |
1782 | ||
1783 | igbvf_free_irq(adapter); | |
1784 | ||
1785 | igbvf_free_tx_resources(adapter->tx_ring); | |
1786 | igbvf_free_rx_resources(adapter->rx_ring); | |
1787 | ||
1788 | return 0; | |
1789 | } | |
0340501b | 1790 | |
d4e0fe01 AD |
1791 | /** |
1792 | * igbvf_set_mac - Change the Ethernet Address of the NIC | |
1793 | * @netdev: network interface device structure | |
1794 | * @p: pointer to an address structure | |
1795 | * | |
1796 | * Returns 0 on success, negative on failure | |
1797 | **/ | |
1798 | static int igbvf_set_mac(struct net_device *netdev, void *p) | |
1799 | { | |
1800 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
1801 | struct e1000_hw *hw = &adapter->hw; | |
1802 | struct sockaddr *addr = p; | |
1803 | ||
1804 | if (!is_valid_ether_addr(addr->sa_data)) | |
1805 | return -EADDRNOTAVAIL; | |
1806 | ||
1807 | memcpy(hw->mac.addr, addr->sa_data, netdev->addr_len); | |
1808 | ||
32652c2a GE |
1809 | spin_lock_bh(&hw->mbx_lock); |
1810 | ||
d4e0fe01 AD |
1811 | hw->mac.ops.rar_set(hw, hw->mac.addr, 0); |
1812 | ||
32652c2a GE |
1813 | spin_unlock_bh(&hw->mbx_lock); |
1814 | ||
887fa9d8 | 1815 | if (!ether_addr_equal(addr->sa_data, hw->mac.addr)) |
d4e0fe01 AD |
1816 | return -EADDRNOTAVAIL; |
1817 | ||
a05e4c0a | 1818 | eth_hw_addr_set(netdev, addr->sa_data); |
d4e0fe01 AD |
1819 | |
1820 | return 0; | |
1821 | } | |
1822 | ||
0340501b JK |
1823 | #define UPDATE_VF_COUNTER(reg, name) \ |
1824 | { \ | |
1825 | u32 current_counter = er32(reg); \ | |
1826 | if (current_counter < adapter->stats.last_##name) \ | |
1827 | adapter->stats.name += 0x100000000LL; \ | |
1828 | adapter->stats.last_##name = current_counter; \ | |
1829 | adapter->stats.name &= 0xFFFFFFFF00000000LL; \ | |
1830 | adapter->stats.name |= current_counter; \ | |
1831 | } | |
d4e0fe01 AD |
1832 | |
1833 | /** | |
1834 | * igbvf_update_stats - Update the board statistics counters | |
1835 | * @adapter: board private structure | |
1836 | **/ | |
1837 | void igbvf_update_stats(struct igbvf_adapter *adapter) | |
1838 | { | |
1839 | struct e1000_hw *hw = &adapter->hw; | |
1840 | struct pci_dev *pdev = adapter->pdev; | |
1841 | ||
0340501b | 1842 | /* Prevent stats update while adapter is being reset, link is down |
d4e0fe01 AD |
1843 | * or if the pci connection is down. |
1844 | */ | |
1845 | if (adapter->link_speed == 0) | |
1846 | return; | |
1847 | ||
1848 | if (test_bit(__IGBVF_RESETTING, &adapter->state)) | |
1849 | return; | |
1850 | ||
1851 | if (pci_channel_offline(pdev)) | |
1852 | return; | |
1853 | ||
1854 | UPDATE_VF_COUNTER(VFGPRC, gprc); | |
1855 | UPDATE_VF_COUNTER(VFGORC, gorc); | |
1856 | UPDATE_VF_COUNTER(VFGPTC, gptc); | |
1857 | UPDATE_VF_COUNTER(VFGOTC, gotc); | |
1858 | UPDATE_VF_COUNTER(VFMPRC, mprc); | |
1859 | UPDATE_VF_COUNTER(VFGOTLBC, gotlbc); | |
1860 | UPDATE_VF_COUNTER(VFGPTLBC, gptlbc); | |
1861 | UPDATE_VF_COUNTER(VFGORLBC, gorlbc); | |
1862 | UPDATE_VF_COUNTER(VFGPRLBC, gprlbc); | |
1863 | ||
1864 | /* Fill out the OS statistics structure */ | |
55c05dd0 | 1865 | adapter->netdev->stats.multicast = adapter->stats.mprc; |
d4e0fe01 AD |
1866 | } |
1867 | ||
1868 | static void igbvf_print_link_info(struct igbvf_adapter *adapter) | |
1869 | { | |
a4ba8cbe JK |
1870 | dev_info(&adapter->pdev->dev, "Link is Up %d Mbps %s Duplex\n", |
1871 | adapter->link_speed, | |
1872 | adapter->link_duplex == FULL_DUPLEX ? "Full" : "Half"); | |
d4e0fe01 AD |
1873 | } |
1874 | ||
1875 | static bool igbvf_has_link(struct igbvf_adapter *adapter) | |
1876 | { | |
1877 | struct e1000_hw *hw = &adapter->hw; | |
1878 | s32 ret_val = E1000_SUCCESS; | |
1879 | bool link_active; | |
1880 | ||
72279093 AD |
1881 | /* If interface is down, stay link down */ |
1882 | if (test_bit(__IGBVF_DOWN, &adapter->state)) | |
1883 | return false; | |
1884 | ||
32652c2a GE |
1885 | spin_lock_bh(&hw->mbx_lock); |
1886 | ||
d4e0fe01 | 1887 | ret_val = hw->mac.ops.check_for_link(hw); |
32652c2a GE |
1888 | |
1889 | spin_unlock_bh(&hw->mbx_lock); | |
1890 | ||
d4e0fe01 AD |
1891 | link_active = !hw->mac.get_link_status; |
1892 | ||
1893 | /* if check for link returns error we will need to reset */ | |
72279093 | 1894 | if (ret_val && time_after(jiffies, adapter->last_reset + (10 * HZ))) |
d4e0fe01 AD |
1895 | schedule_work(&adapter->reset_task); |
1896 | ||
1897 | return link_active; | |
1898 | } | |
1899 | ||
1900 | /** | |
1901 | * igbvf_watchdog - Timer Call-back | |
b50f7bca | 1902 | * @t: timer list pointer containing private struct |
d4e0fe01 | 1903 | **/ |
26566eae | 1904 | static void igbvf_watchdog(struct timer_list *t) |
d4e0fe01 | 1905 | { |
26566eae | 1906 | struct igbvf_adapter *adapter = from_timer(adapter, t, watchdog_timer); |
d4e0fe01 AD |
1907 | |
1908 | /* Do the rest outside of interrupt context */ | |
1909 | schedule_work(&adapter->watchdog_task); | |
1910 | } | |
1911 | ||
1912 | static void igbvf_watchdog_task(struct work_struct *work) | |
1913 | { | |
1914 | struct igbvf_adapter *adapter = container_of(work, | |
0340501b JK |
1915 | struct igbvf_adapter, |
1916 | watchdog_task); | |
d4e0fe01 AD |
1917 | struct net_device *netdev = adapter->netdev; |
1918 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
1919 | struct igbvf_ring *tx_ring = adapter->tx_ring; | |
1920 | struct e1000_hw *hw = &adapter->hw; | |
1921 | u32 link; | |
1922 | int tx_pending = 0; | |
1923 | ||
1924 | link = igbvf_has_link(adapter); | |
1925 | ||
1926 | if (link) { | |
1927 | if (!netif_carrier_ok(netdev)) { | |
d4e0fe01 | 1928 | mac->ops.get_link_up_info(&adapter->hw, |
0340501b JK |
1929 | &adapter->link_speed, |
1930 | &adapter->link_duplex); | |
d4e0fe01 AD |
1931 | igbvf_print_link_info(adapter); |
1932 | ||
d4e0fe01 AD |
1933 | netif_carrier_on(netdev); |
1934 | netif_wake_queue(netdev); | |
1935 | } | |
1936 | } else { | |
1937 | if (netif_carrier_ok(netdev)) { | |
1938 | adapter->link_speed = 0; | |
1939 | adapter->link_duplex = 0; | |
1940 | dev_info(&adapter->pdev->dev, "Link is Down\n"); | |
1941 | netif_carrier_off(netdev); | |
1942 | netif_stop_queue(netdev); | |
1943 | } | |
1944 | } | |
1945 | ||
1946 | if (netif_carrier_ok(netdev)) { | |
1947 | igbvf_update_stats(adapter); | |
1948 | } else { | |
1949 | tx_pending = (igbvf_desc_unused(tx_ring) + 1 < | |
0340501b | 1950 | tx_ring->count); |
d4e0fe01 | 1951 | if (tx_pending) { |
0340501b | 1952 | /* We've lost link, so the controller stops DMA, |
d4e0fe01 AD |
1953 | * but we've got queued Tx work that's never going |
1954 | * to get done, so reset controller to flush Tx. | |
1955 | * (Do the reset outside of interrupt context). | |
1956 | */ | |
1957 | adapter->tx_timeout_count++; | |
1958 | schedule_work(&adapter->reset_task); | |
1959 | } | |
1960 | } | |
1961 | ||
1962 | /* Cause software interrupt to ensure Rx ring is cleaned */ | |
1963 | ew32(EICS, adapter->rx_ring->eims_value); | |
1964 | ||
d4e0fe01 AD |
1965 | /* Reset the timer */ |
1966 | if (!test_bit(__IGBVF_DOWN, &adapter->state)) | |
1967 | mod_timer(&adapter->watchdog_timer, | |
1968 | round_jiffies(jiffies + (2 * HZ))); | |
1969 | } | |
1970 | ||
0340501b JK |
1971 | #define IGBVF_TX_FLAGS_CSUM 0x00000001 |
1972 | #define IGBVF_TX_FLAGS_VLAN 0x00000002 | |
1973 | #define IGBVF_TX_FLAGS_TSO 0x00000004 | |
1974 | #define IGBVF_TX_FLAGS_IPV4 0x00000008 | |
1975 | #define IGBVF_TX_FLAGS_VLAN_MASK 0xffff0000 | |
1976 | #define IGBVF_TX_FLAGS_VLAN_SHIFT 16 | |
d4e0fe01 | 1977 | |
ea6ce602 AD |
1978 | static void igbvf_tx_ctxtdesc(struct igbvf_ring *tx_ring, u32 vlan_macip_lens, |
1979 | u32 type_tucmd, u32 mss_l4len_idx) | |
1980 | { | |
1981 | struct e1000_adv_tx_context_desc *context_desc; | |
1982 | struct igbvf_buffer *buffer_info; | |
1983 | u16 i = tx_ring->next_to_use; | |
1984 | ||
1985 | context_desc = IGBVF_TX_CTXTDESC_ADV(*tx_ring, i); | |
1986 | buffer_info = &tx_ring->buffer_info[i]; | |
1987 | ||
1988 | i++; | |
1989 | tx_ring->next_to_use = (i < tx_ring->count) ? i : 0; | |
1990 | ||
1991 | /* set bits to identify this as an advanced context descriptor */ | |
1992 | type_tucmd |= E1000_TXD_CMD_DEXT | E1000_ADVTXD_DTYP_CTXT; | |
1993 | ||
1994 | context_desc->vlan_macip_lens = cpu_to_le32(vlan_macip_lens); | |
1995 | context_desc->seqnum_seed = 0; | |
1996 | context_desc->type_tucmd_mlhl = cpu_to_le32(type_tucmd); | |
1997 | context_desc->mss_l4len_idx = cpu_to_le32(mss_l4len_idx); | |
1998 | ||
1999 | buffer_info->time_stamp = jiffies; | |
2000 | buffer_info->dma = 0; | |
2001 | } | |
2002 | ||
e10715d3 AD |
2003 | static int igbvf_tso(struct igbvf_ring *tx_ring, |
2004 | struct sk_buff *skb, u32 tx_flags, u8 *hdr_len) | |
2005 | { | |
2006 | u32 vlan_macip_lens, type_tucmd, mss_l4len_idx; | |
2007 | union { | |
2008 | struct iphdr *v4; | |
2009 | struct ipv6hdr *v6; | |
2010 | unsigned char *hdr; | |
2011 | } ip; | |
2012 | union { | |
2013 | struct tcphdr *tcp; | |
2014 | unsigned char *hdr; | |
2015 | } l4; | |
2016 | u32 paylen, l4_offset; | |
6b8f07b4 FR |
2017 | int err; |
2018 | ||
e10715d3 AD |
2019 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
2020 | return 0; | |
2021 | ||
2022 | if (!skb_is_gso(skb)) | |
2023 | return 0; | |
d4e0fe01 | 2024 | |
6b8f07b4 | 2025 | err = skb_cow_head(skb, 0); |
e10715d3 | 2026 | if (err < 0) |
6b8f07b4 | 2027 | return err; |
d4e0fe01 | 2028 | |
e10715d3 AD |
2029 | ip.hdr = skb_network_header(skb); |
2030 | l4.hdr = skb_checksum_start(skb); | |
d4e0fe01 | 2031 | |
e10715d3 AD |
2032 | /* ADV DTYP TUCMD MKRLOC/ISCSIHEDLEN */ |
2033 | type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP; | |
d4e0fe01 | 2034 | |
e10715d3 AD |
2035 | /* initialize outer IP header fields */ |
2036 | if (ip.v4->version == 4) { | |
516165a1 AD |
2037 | unsigned char *csum_start = skb_checksum_start(skb); |
2038 | unsigned char *trans_start = ip.hdr + (ip.v4->ihl * 4); | |
2039 | ||
e10715d3 AD |
2040 | /* IP header will have to cancel out any data that |
2041 | * is not a part of the outer IP header | |
2042 | */ | |
516165a1 AD |
2043 | ip.v4->check = csum_fold(csum_partial(trans_start, |
2044 | csum_start - trans_start, | |
2045 | 0)); | |
e10715d3 | 2046 | type_tucmd |= E1000_ADVTXD_TUCMD_IPV4; |
d4e0fe01 | 2047 | |
e10715d3 AD |
2048 | ip.v4->tot_len = 0; |
2049 | } else { | |
2050 | ip.v6->payload_len = 0; | |
2051 | } | |
d4e0fe01 | 2052 | |
e10715d3 AD |
2053 | /* determine offset of inner transport header */ |
2054 | l4_offset = l4.hdr - skb->data; | |
d4e0fe01 | 2055 | |
e10715d3 AD |
2056 | /* compute length of segmentation header */ |
2057 | *hdr_len = (l4.tcp->doff * 4) + l4_offset; | |
d4e0fe01 | 2058 | |
e10715d3 AD |
2059 | /* remove payload length from inner checksum */ |
2060 | paylen = skb->len - l4_offset; | |
de844713 | 2061 | csum_replace_by_diff(&l4.tcp->check, (__force __wsum)htonl(paylen)); |
d4e0fe01 | 2062 | |
e10715d3 AD |
2063 | /* MSS L4LEN IDX */ |
2064 | mss_l4len_idx = (*hdr_len - l4_offset) << E1000_ADVTXD_L4LEN_SHIFT; | |
2065 | mss_l4len_idx |= skb_shinfo(skb)->gso_size << E1000_ADVTXD_MSS_SHIFT; | |
d4e0fe01 | 2066 | |
e10715d3 AD |
2067 | /* VLAN MACLEN IPLEN */ |
2068 | vlan_macip_lens = l4.hdr - ip.hdr; | |
2069 | vlan_macip_lens |= (ip.hdr - skb->data) << E1000_ADVTXD_MACLEN_SHIFT; | |
2070 | vlan_macip_lens |= tx_flags & IGBVF_TX_FLAGS_VLAN_MASK; | |
d4e0fe01 | 2071 | |
e10715d3 | 2072 | igbvf_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, mss_l4len_idx); |
d4e0fe01 | 2073 | |
e10715d3 | 2074 | return 1; |
d4e0fe01 AD |
2075 | } |
2076 | ||
ea6ce602 AD |
2077 | static bool igbvf_tx_csum(struct igbvf_ring *tx_ring, struct sk_buff *skb, |
2078 | u32 tx_flags, __be16 protocol) | |
2079 | { | |
2080 | u32 vlan_macip_lens = 0; | |
2081 | u32 type_tucmd = 0; | |
d4e0fe01 | 2082 | |
ea6ce602 AD |
2083 | if (skb->ip_summed != CHECKSUM_PARTIAL) { |
2084 | csum_failed: | |
2085 | if (!(tx_flags & IGBVF_TX_FLAGS_VLAN)) | |
2086 | return false; | |
2087 | goto no_csum; | |
2088 | } | |
d4e0fe01 | 2089 | |
ea6ce602 AD |
2090 | switch (skb->csum_offset) { |
2091 | case offsetof(struct tcphdr, check): | |
2092 | type_tucmd = E1000_ADVTXD_TUCMD_L4T_TCP; | |
5463fce6 | 2093 | fallthrough; |
ea6ce602 AD |
2094 | case offsetof(struct udphdr, check): |
2095 | break; | |
2096 | case offsetof(struct sctphdr, checksum): | |
2097 | /* validate that this is actually an SCTP request */ | |
d2de4444 | 2098 | if (skb_csum_is_sctp(skb)) { |
ea6ce602 AD |
2099 | type_tucmd = E1000_ADVTXD_TUCMD_L4T_SCTP; |
2100 | break; | |
d4e0fe01 | 2101 | } |
5463fce6 | 2102 | fallthrough; |
ea6ce602 AD |
2103 | default: |
2104 | skb_checksum_help(skb); | |
2105 | goto csum_failed; | |
d4e0fe01 AD |
2106 | } |
2107 | ||
ea6ce602 AD |
2108 | vlan_macip_lens = skb_checksum_start_offset(skb) - |
2109 | skb_network_offset(skb); | |
2110 | no_csum: | |
2111 | vlan_macip_lens |= skb_network_offset(skb) << E1000_ADVTXD_MACLEN_SHIFT; | |
2112 | vlan_macip_lens |= tx_flags & IGBVF_TX_FLAGS_VLAN_MASK; | |
2113 | ||
2114 | igbvf_tx_ctxtdesc(tx_ring, vlan_macip_lens, type_tucmd, 0); | |
2115 | return true; | |
d4e0fe01 AD |
2116 | } |
2117 | ||
2118 | static int igbvf_maybe_stop_tx(struct net_device *netdev, int size) | |
2119 | { | |
2120 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2121 | ||
2122 | /* there is enough descriptors then we don't need to worry */ | |
2123 | if (igbvf_desc_unused(adapter->tx_ring) >= size) | |
2124 | return 0; | |
2125 | ||
2126 | netif_stop_queue(netdev); | |
2127 | ||
0340501b JK |
2128 | /* Herbert's original patch had: |
2129 | * smp_mb__after_netif_stop_queue(); | |
2130 | * but since that doesn't exist yet, just open code it. | |
2131 | */ | |
d4e0fe01 AD |
2132 | smp_mb(); |
2133 | ||
2134 | /* We need to check again just in case room has been made available */ | |
2135 | if (igbvf_desc_unused(adapter->tx_ring) < size) | |
2136 | return -EBUSY; | |
2137 | ||
2138 | netif_wake_queue(netdev); | |
2139 | ||
2140 | ++adapter->restart_queue; | |
2141 | return 0; | |
2142 | } | |
2143 | ||
0340501b | 2144 | #define IGBVF_MAX_TXD_PWR 16 |
0ed2dbf4 | 2145 | #define IGBVF_MAX_DATA_PER_TXD (1u << IGBVF_MAX_TXD_PWR) |
d4e0fe01 AD |
2146 | |
2147 | static inline int igbvf_tx_map_adv(struct igbvf_adapter *adapter, | |
0340501b | 2148 | struct igbvf_ring *tx_ring, |
3eb1a40f | 2149 | struct sk_buff *skb) |
d4e0fe01 AD |
2150 | { |
2151 | struct igbvf_buffer *buffer_info; | |
a7d5ca40 | 2152 | struct pci_dev *pdev = adapter->pdev; |
d4e0fe01 AD |
2153 | unsigned int len = skb_headlen(skb); |
2154 | unsigned int count = 0, i; | |
2155 | unsigned int f; | |
d4e0fe01 AD |
2156 | |
2157 | i = tx_ring->next_to_use; | |
2158 | ||
d4e0fe01 AD |
2159 | buffer_info = &tx_ring->buffer_info[i]; |
2160 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2161 | buffer_info->length = len; | |
2162 | /* set time_stamp *before* dma to help avoid a possible race */ | |
2163 | buffer_info->time_stamp = jiffies; | |
ac26d7d6 | 2164 | buffer_info->mapped_as_page = false; |
123e9f1a NN |
2165 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, len, |
2166 | DMA_TO_DEVICE); | |
2167 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) | |
a7d5ca40 AD |
2168 | goto dma_error; |
2169 | ||
d4e0fe01 | 2170 | for (f = 0; f < skb_shinfo(skb)->nr_frags; f++) { |
d7840976 | 2171 | const skb_frag_t *frag; |
d4e0fe01 | 2172 | |
8581145f | 2173 | count++; |
d4e0fe01 AD |
2174 | i++; |
2175 | if (i == tx_ring->count) | |
2176 | i = 0; | |
2177 | ||
2178 | frag = &skb_shinfo(skb)->frags[f]; | |
9e903e08 | 2179 | len = skb_frag_size(frag); |
d4e0fe01 AD |
2180 | |
2181 | buffer_info = &tx_ring->buffer_info[i]; | |
2182 | BUG_ON(len >= IGBVF_MAX_DATA_PER_TXD); | |
2183 | buffer_info->length = len; | |
2184 | buffer_info->time_stamp = jiffies; | |
a7d5ca40 | 2185 | buffer_info->mapped_as_page = true; |
877749bf | 2186 | buffer_info->dma = skb_frag_dma_map(&pdev->dev, frag, 0, len, |
0340501b | 2187 | DMA_TO_DEVICE); |
123e9f1a | 2188 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
a7d5ca40 | 2189 | goto dma_error; |
d4e0fe01 AD |
2190 | } |
2191 | ||
2192 | tx_ring->buffer_info[i].skb = skb; | |
d4e0fe01 | 2193 | |
a7d5ca40 AD |
2194 | return ++count; |
2195 | ||
2196 | dma_error: | |
2197 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
2198 | ||
2199 | /* clear timestamp and dma mappings for failed buffer_info mapping */ | |
2200 | buffer_info->dma = 0; | |
2201 | buffer_info->time_stamp = 0; | |
2202 | buffer_info->length = 0; | |
a7d5ca40 | 2203 | buffer_info->mapped_as_page = false; |
c1fa347f RK |
2204 | if (count) |
2205 | count--; | |
a7d5ca40 AD |
2206 | |
2207 | /* clear timestamp and dma mappings for remaining portion of packet */ | |
c1fa347f | 2208 | while (count--) { |
0340501b | 2209 | if (i == 0) |
a7d5ca40 | 2210 | i += tx_ring->count; |
c1fa347f | 2211 | i--; |
a7d5ca40 AD |
2212 | buffer_info = &tx_ring->buffer_info[i]; |
2213 | igbvf_put_txbuf(adapter, buffer_info); | |
2214 | } | |
2215 | ||
2216 | return 0; | |
d4e0fe01 AD |
2217 | } |
2218 | ||
2219 | static inline void igbvf_tx_queue_adv(struct igbvf_adapter *adapter, | |
0340501b | 2220 | struct igbvf_ring *tx_ring, |
3eb1a40f AD |
2221 | int tx_flags, int count, |
2222 | unsigned int first, u32 paylen, | |
0340501b | 2223 | u8 hdr_len) |
d4e0fe01 AD |
2224 | { |
2225 | union e1000_adv_tx_desc *tx_desc = NULL; | |
2226 | struct igbvf_buffer *buffer_info; | |
2227 | u32 olinfo_status = 0, cmd_type_len; | |
2228 | unsigned int i; | |
2229 | ||
2230 | cmd_type_len = (E1000_ADVTXD_DTYP_DATA | E1000_ADVTXD_DCMD_IFCS | | |
0340501b | 2231 | E1000_ADVTXD_DCMD_DEXT); |
d4e0fe01 AD |
2232 | |
2233 | if (tx_flags & IGBVF_TX_FLAGS_VLAN) | |
2234 | cmd_type_len |= E1000_ADVTXD_DCMD_VLE; | |
2235 | ||
2236 | if (tx_flags & IGBVF_TX_FLAGS_TSO) { | |
2237 | cmd_type_len |= E1000_ADVTXD_DCMD_TSE; | |
2238 | ||
2239 | /* insert tcp checksum */ | |
2240 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2241 | ||
2242 | /* insert ip checksum */ | |
2243 | if (tx_flags & IGBVF_TX_FLAGS_IPV4) | |
2244 | olinfo_status |= E1000_TXD_POPTS_IXSM << 8; | |
2245 | ||
2246 | } else if (tx_flags & IGBVF_TX_FLAGS_CSUM) { | |
2247 | olinfo_status |= E1000_TXD_POPTS_TXSM << 8; | |
2248 | } | |
2249 | ||
2250 | olinfo_status |= ((paylen - hdr_len) << E1000_ADVTXD_PAYLEN_SHIFT); | |
2251 | ||
2252 | i = tx_ring->next_to_use; | |
2253 | while (count--) { | |
2254 | buffer_info = &tx_ring->buffer_info[i]; | |
2255 | tx_desc = IGBVF_TX_DESC_ADV(*tx_ring, i); | |
2256 | tx_desc->read.buffer_addr = cpu_to_le64(buffer_info->dma); | |
2257 | tx_desc->read.cmd_type_len = | |
0340501b | 2258 | cpu_to_le32(cmd_type_len | buffer_info->length); |
d4e0fe01 AD |
2259 | tx_desc->read.olinfo_status = cpu_to_le32(olinfo_status); |
2260 | i++; | |
2261 | if (i == tx_ring->count) | |
2262 | i = 0; | |
2263 | } | |
2264 | ||
2265 | tx_desc->read.cmd_type_len |= cpu_to_le32(adapter->txd_cmd); | |
2266 | /* Force memory writes to complete before letting h/w | |
2267 | * know there are new descriptors to fetch. (Only | |
2268 | * applicable for weak-ordered memory model archs, | |
0340501b JK |
2269 | * such as IA-64). |
2270 | */ | |
d4e0fe01 AD |
2271 | wmb(); |
2272 | ||
3eb1a40f | 2273 | tx_ring->buffer_info[first].next_to_watch = tx_desc; |
d4e0fe01 AD |
2274 | tx_ring->next_to_use = i; |
2275 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
d4e0fe01 AD |
2276 | } |
2277 | ||
3b29a56d SH |
2278 | static netdev_tx_t igbvf_xmit_frame_ring_adv(struct sk_buff *skb, |
2279 | struct net_device *netdev, | |
2280 | struct igbvf_ring *tx_ring) | |
d4e0fe01 AD |
2281 | { |
2282 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2283 | unsigned int first, tx_flags = 0; | |
2284 | u8 hdr_len = 0; | |
2285 | int count = 0; | |
2286 | int tso = 0; | |
72b14059 | 2287 | __be16 protocol = vlan_get_protocol(skb); |
d4e0fe01 AD |
2288 | |
2289 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2290 | dev_kfree_skb_any(skb); | |
2291 | return NETDEV_TX_OK; | |
2292 | } | |
2293 | ||
2294 | if (skb->len <= 0) { | |
2295 | dev_kfree_skb_any(skb); | |
2296 | return NETDEV_TX_OK; | |
2297 | } | |
2298 | ||
0340501b JK |
2299 | /* need: count + 4 desc gap to keep tail from touching |
2300 | * + 2 desc gap to keep tail from touching head, | |
2301 | * + 1 desc for skb->data, | |
2302 | * + 1 desc for context descriptor, | |
d4e0fe01 AD |
2303 | * head, otherwise try next time |
2304 | */ | |
2305 | if (igbvf_maybe_stop_tx(netdev, skb_shinfo(skb)->nr_frags + 4)) { | |
2306 | /* this is a hard error */ | |
2307 | return NETDEV_TX_BUSY; | |
2308 | } | |
2309 | ||
df8a39de | 2310 | if (skb_vlan_tag_present(skb)) { |
d4e0fe01 | 2311 | tx_flags |= IGBVF_TX_FLAGS_VLAN; |
df8a39de JP |
2312 | tx_flags |= (skb_vlan_tag_get(skb) << |
2313 | IGBVF_TX_FLAGS_VLAN_SHIFT); | |
d4e0fe01 AD |
2314 | } |
2315 | ||
72b14059 | 2316 | if (protocol == htons(ETH_P_IP)) |
d4e0fe01 AD |
2317 | tx_flags |= IGBVF_TX_FLAGS_IPV4; |
2318 | ||
2319 | first = tx_ring->next_to_use; | |
2320 | ||
e10715d3 | 2321 | tso = igbvf_tso(tx_ring, skb, tx_flags, &hdr_len); |
d4e0fe01 AD |
2322 | if (unlikely(tso < 0)) { |
2323 | dev_kfree_skb_any(skb); | |
2324 | return NETDEV_TX_OK; | |
2325 | } | |
2326 | ||
2327 | if (tso) | |
2328 | tx_flags |= IGBVF_TX_FLAGS_TSO; | |
ea6ce602 | 2329 | else if (igbvf_tx_csum(tx_ring, skb, tx_flags, protocol) && |
0340501b | 2330 | (skb->ip_summed == CHECKSUM_PARTIAL)) |
d4e0fe01 AD |
2331 | tx_flags |= IGBVF_TX_FLAGS_CSUM; |
2332 | ||
0340501b | 2333 | /* count reflects descriptors mapped, if 0 then mapping error |
25985edc | 2334 | * has occurred and we need to rewind the descriptor queue |
d4e0fe01 | 2335 | */ |
3eb1a40f | 2336 | count = igbvf_tx_map_adv(adapter, tx_ring, skb); |
d4e0fe01 AD |
2337 | |
2338 | if (count) { | |
2339 | igbvf_tx_queue_adv(adapter, tx_ring, tx_flags, count, | |
3eb1a40f | 2340 | first, skb->len, hdr_len); |
d4e0fe01 AD |
2341 | /* Make sure there is space in the ring for the next send. */ |
2342 | igbvf_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 4); | |
2343 | } else { | |
2344 | dev_kfree_skb_any(skb); | |
2345 | tx_ring->buffer_info[first].time_stamp = 0; | |
2346 | tx_ring->next_to_use = first; | |
2347 | } | |
2348 | ||
2349 | return NETDEV_TX_OK; | |
2350 | } | |
2351 | ||
3b29a56d SH |
2352 | static netdev_tx_t igbvf_xmit_frame(struct sk_buff *skb, |
2353 | struct net_device *netdev) | |
d4e0fe01 AD |
2354 | { |
2355 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2356 | struct igbvf_ring *tx_ring; | |
d4e0fe01 AD |
2357 | |
2358 | if (test_bit(__IGBVF_DOWN, &adapter->state)) { | |
2359 | dev_kfree_skb_any(skb); | |
2360 | return NETDEV_TX_OK; | |
2361 | } | |
2362 | ||
2363 | tx_ring = &adapter->tx_ring[0]; | |
2364 | ||
3b29a56d | 2365 | return igbvf_xmit_frame_ring_adv(skb, netdev, tx_ring); |
d4e0fe01 AD |
2366 | } |
2367 | ||
2368 | /** | |
2369 | * igbvf_tx_timeout - Respond to a Tx Hang | |
2370 | * @netdev: network interface device structure | |
b50f7bca | 2371 | * @txqueue: queue timing out (unused) |
d4e0fe01 | 2372 | **/ |
b50f7bca | 2373 | static void igbvf_tx_timeout(struct net_device *netdev, unsigned int __always_unused txqueue) |
d4e0fe01 AD |
2374 | { |
2375 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2376 | ||
2377 | /* Do the reset outside of interrupt context */ | |
2378 | adapter->tx_timeout_count++; | |
2379 | schedule_work(&adapter->reset_task); | |
2380 | } | |
2381 | ||
2382 | static void igbvf_reset_task(struct work_struct *work) | |
2383 | { | |
2384 | struct igbvf_adapter *adapter; | |
0340501b | 2385 | |
d4e0fe01 AD |
2386 | adapter = container_of(work, struct igbvf_adapter, reset_task); |
2387 | ||
2388 | igbvf_reinit_locked(adapter); | |
2389 | } | |
2390 | ||
d4e0fe01 AD |
2391 | /** |
2392 | * igbvf_change_mtu - Change the Maximum Transfer Unit | |
2393 | * @netdev: network interface device structure | |
2394 | * @new_mtu: new value for maximum frame size | |
2395 | * | |
2396 | * Returns 0 on success, negative on failure | |
2397 | **/ | |
2398 | static int igbvf_change_mtu(struct net_device *netdev, int new_mtu) | |
2399 | { | |
2400 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2401 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
2402 | ||
d4e0fe01 | 2403 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) |
0340501b | 2404 | usleep_range(1000, 2000); |
d4e0fe01 AD |
2405 | /* igbvf_down has a dependency on max_frame_size */ |
2406 | adapter->max_frame_size = max_frame; | |
2407 | if (netif_running(netdev)) | |
2408 | igbvf_down(adapter); | |
2409 | ||
0340501b | 2410 | /* NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN |
d4e0fe01 AD |
2411 | * means we reserve 2 more, this pushes us to allocate from the next |
2412 | * larger slab size. | |
2413 | * i.e. RXBUFFER_2048 --> size-4096 slab | |
2414 | * However with the new *_jumbo_rx* routines, jumbo receives will use | |
2415 | * fragmented skbs | |
2416 | */ | |
2417 | ||
2418 | if (max_frame <= 1024) | |
2419 | adapter->rx_buffer_len = 1024; | |
2420 | else if (max_frame <= 2048) | |
2421 | adapter->rx_buffer_len = 2048; | |
2422 | else | |
2423 | #if (PAGE_SIZE / 2) > 16384 | |
2424 | adapter->rx_buffer_len = 16384; | |
2425 | #else | |
2426 | adapter->rx_buffer_len = PAGE_SIZE / 2; | |
2427 | #endif | |
2428 | ||
d4e0fe01 AD |
2429 | /* adjust allocation if LPE protects us, and we aren't using SBP */ |
2430 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
0340501b | 2431 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) |
d4e0fe01 | 2432 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + |
0340501b | 2433 | ETH_FCS_LEN; |
d4e0fe01 | 2434 | |
12299132 FF |
2435 | netdev_dbg(netdev, "changing MTU from %d to %d\n", |
2436 | netdev->mtu, new_mtu); | |
1eb2cded | 2437 | WRITE_ONCE(netdev->mtu, new_mtu); |
d4e0fe01 AD |
2438 | |
2439 | if (netif_running(netdev)) | |
2440 | igbvf_up(adapter); | |
2441 | else | |
2442 | igbvf_reset(adapter); | |
2443 | ||
2444 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
2445 | ||
2446 | return 0; | |
2447 | } | |
2448 | ||
2449 | static int igbvf_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
2450 | { | |
2451 | switch (cmd) { | |
2452 | default: | |
2453 | return -EOPNOTSUPP; | |
2454 | } | |
2455 | } | |
2456 | ||
e9c971bd | 2457 | static int igbvf_suspend(struct device *dev_d) |
d4e0fe01 | 2458 | { |
e9c971bd | 2459 | struct net_device *netdev = dev_get_drvdata(dev_d); |
d4e0fe01 | 2460 | struct igbvf_adapter *adapter = netdev_priv(netdev); |
d4e0fe01 AD |
2461 | |
2462 | netif_device_detach(netdev); | |
2463 | ||
2464 | if (netif_running(netdev)) { | |
2465 | WARN_ON(test_bit(__IGBVF_RESETTING, &adapter->state)); | |
2466 | igbvf_down(adapter); | |
2467 | igbvf_free_irq(adapter); | |
2468 | } | |
2469 | ||
d4e0fe01 AD |
2470 | return 0; |
2471 | } | |
2472 | ||
75a3f93b | 2473 | static int igbvf_resume(struct device *dev_d) |
d4e0fe01 | 2474 | { |
e9c971bd | 2475 | struct pci_dev *pdev = to_pci_dev(dev_d); |
d4e0fe01 AD |
2476 | struct net_device *netdev = pci_get_drvdata(pdev); |
2477 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2478 | u32 err; | |
2479 | ||
d4e0fe01 AD |
2480 | pci_set_master(pdev); |
2481 | ||
2482 | if (netif_running(netdev)) { | |
2483 | err = igbvf_request_irq(adapter); | |
2484 | if (err) | |
2485 | return err; | |
2486 | } | |
2487 | ||
2488 | igbvf_reset(adapter); | |
2489 | ||
2490 | if (netif_running(netdev)) | |
2491 | igbvf_up(adapter); | |
2492 | ||
2493 | netif_device_attach(netdev); | |
2494 | ||
2495 | return 0; | |
2496 | } | |
d4e0fe01 AD |
2497 | |
2498 | static void igbvf_shutdown(struct pci_dev *pdev) | |
2499 | { | |
e9c971bd | 2500 | igbvf_suspend(&pdev->dev); |
d4e0fe01 AD |
2501 | } |
2502 | ||
2503 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
0340501b | 2504 | /* Polling 'interrupt' - used by things like netconsole to send skbs |
d4e0fe01 AD |
2505 | * without having to re-enable interrupts. It's not called while |
2506 | * the interrupt routine is executing. | |
2507 | */ | |
2508 | static void igbvf_netpoll(struct net_device *netdev) | |
2509 | { | |
2510 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2511 | ||
2512 | disable_irq(adapter->pdev->irq); | |
2513 | ||
2514 | igbvf_clean_tx_irq(adapter->tx_ring); | |
2515 | ||
2516 | enable_irq(adapter->pdev->irq); | |
2517 | } | |
2518 | #endif | |
2519 | ||
2520 | /** | |
2521 | * igbvf_io_error_detected - called when PCI error is detected | |
2522 | * @pdev: Pointer to PCI device | |
2523 | * @state: The current pci connection state | |
2524 | * | |
2525 | * This function is called after a PCI bus error affecting | |
2526 | * this device has been detected. | |
2527 | */ | |
2528 | static pci_ers_result_t igbvf_io_error_detected(struct pci_dev *pdev, | |
0340501b | 2529 | pci_channel_state_t state) |
d4e0fe01 AD |
2530 | { |
2531 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2532 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2533 | ||
2534 | netif_device_detach(netdev); | |
2535 | ||
c06c430d DN |
2536 | if (state == pci_channel_io_perm_failure) |
2537 | return PCI_ERS_RESULT_DISCONNECT; | |
2538 | ||
d4e0fe01 AD |
2539 | if (netif_running(netdev)) |
2540 | igbvf_down(adapter); | |
2541 | pci_disable_device(pdev); | |
2542 | ||
1ca33bf9 | 2543 | /* Request a slot reset. */ |
d4e0fe01 AD |
2544 | return PCI_ERS_RESULT_NEED_RESET; |
2545 | } | |
2546 | ||
2547 | /** | |
2548 | * igbvf_io_slot_reset - called after the pci bus has been reset. | |
2549 | * @pdev: Pointer to PCI device | |
2550 | * | |
2551 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
2552 | * resembles the first-half of the igbvf_resume routine. | |
2553 | */ | |
2554 | static pci_ers_result_t igbvf_io_slot_reset(struct pci_dev *pdev) | |
2555 | { | |
2556 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2557 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2558 | ||
2559 | if (pci_enable_device_mem(pdev)) { | |
2560 | dev_err(&pdev->dev, | |
2561 | "Cannot re-enable PCI device after reset.\n"); | |
2562 | return PCI_ERS_RESULT_DISCONNECT; | |
2563 | } | |
2564 | pci_set_master(pdev); | |
2565 | ||
2566 | igbvf_reset(adapter); | |
2567 | ||
2568 | return PCI_ERS_RESULT_RECOVERED; | |
2569 | } | |
2570 | ||
2571 | /** | |
2572 | * igbvf_io_resume - called when traffic can start flowing again. | |
2573 | * @pdev: Pointer to PCI device | |
2574 | * | |
2575 | * This callback is called when the error recovery driver tells us that | |
2576 | * its OK to resume normal operation. Implementation resembles the | |
2577 | * second-half of the igbvf_resume routine. | |
2578 | */ | |
2579 | static void igbvf_io_resume(struct pci_dev *pdev) | |
2580 | { | |
2581 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2582 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2583 | ||
2584 | if (netif_running(netdev)) { | |
2585 | if (igbvf_up(adapter)) { | |
2586 | dev_err(&pdev->dev, | |
2587 | "can't bring device back up after reset\n"); | |
2588 | return; | |
2589 | } | |
2590 | } | |
2591 | ||
2592 | netif_device_attach(netdev); | |
2593 | } | |
2594 | ||
5a9b7bfb DW |
2595 | /** |
2596 | * igbvf_io_prepare - prepare device driver for PCI reset | |
2597 | * @pdev: PCI device information struct | |
2598 | */ | |
2599 | static void igbvf_io_prepare(struct pci_dev *pdev) | |
2600 | { | |
2601 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2602 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2603 | ||
2604 | while (test_and_set_bit(__IGBVF_RESETTING, &adapter->state)) | |
2605 | usleep_range(1000, 2000); | |
2606 | igbvf_down(adapter); | |
2607 | } | |
2608 | ||
2609 | /** | |
2610 | * igbvf_io_reset_done - PCI reset done, device driver reset can begin | |
2611 | * @pdev: PCI device information struct | |
2612 | */ | |
2613 | static void igbvf_io_reset_done(struct pci_dev *pdev) | |
2614 | { | |
2615 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2616 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2617 | ||
2618 | igbvf_up(adapter); | |
2619 | clear_bit(__IGBVF_RESETTING, &adapter->state); | |
2620 | } | |
2621 | ||
d4e0fe01 AD |
2622 | static void igbvf_print_device_info(struct igbvf_adapter *adapter) |
2623 | { | |
2624 | struct e1000_hw *hw = &adapter->hw; | |
2625 | struct net_device *netdev = adapter->netdev; | |
2626 | struct pci_dev *pdev = adapter->pdev; | |
2627 | ||
10090751 WM |
2628 | if (hw->mac.type == e1000_vfadapt_i350) |
2629 | dev_info(&pdev->dev, "Intel(R) I350 Virtual Function\n"); | |
2630 | else | |
2631 | dev_info(&pdev->dev, "Intel(R) 82576 Virtual Function\n"); | |
753cdc33 | 2632 | dev_info(&pdev->dev, "Address: %pM\n", netdev->dev_addr); |
d4e0fe01 AD |
2633 | } |
2634 | ||
c8f44aff | 2635 | static int igbvf_set_features(struct net_device *netdev, |
0340501b | 2636 | netdev_features_t features) |
fd38f734 MM |
2637 | { |
2638 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2639 | ||
2640 | if (features & NETIF_F_RXCSUM) | |
2641 | adapter->flags &= ~IGBVF_FLAG_RX_CSUM_DISABLED; | |
2642 | else | |
2643 | adapter->flags |= IGBVF_FLAG_RX_CSUM_DISABLED; | |
2644 | ||
2645 | return 0; | |
2646 | } | |
2647 | ||
e10715d3 AD |
2648 | #define IGBVF_MAX_MAC_HDR_LEN 127 |
2649 | #define IGBVF_MAX_NETWORK_HDR_LEN 511 | |
2650 | ||
2651 | static netdev_features_t | |
2652 | igbvf_features_check(struct sk_buff *skb, struct net_device *dev, | |
2653 | netdev_features_t features) | |
2654 | { | |
2655 | unsigned int network_hdr_len, mac_hdr_len; | |
2656 | ||
2657 | /* Make certain the headers can be described by a context descriptor */ | |
80bfab79 | 2658 | mac_hdr_len = skb_network_offset(skb); |
e10715d3 AD |
2659 | if (unlikely(mac_hdr_len > IGBVF_MAX_MAC_HDR_LEN)) |
2660 | return features & ~(NETIF_F_HW_CSUM | | |
2661 | NETIF_F_SCTP_CRC | | |
2662 | NETIF_F_HW_VLAN_CTAG_TX | | |
2663 | NETIF_F_TSO | | |
2664 | NETIF_F_TSO6); | |
2665 | ||
2666 | network_hdr_len = skb_checksum_start(skb) - skb_network_header(skb); | |
2667 | if (unlikely(network_hdr_len > IGBVF_MAX_NETWORK_HDR_LEN)) | |
2668 | return features & ~(NETIF_F_HW_CSUM | | |
2669 | NETIF_F_SCTP_CRC | | |
2670 | NETIF_F_TSO | | |
2671 | NETIF_F_TSO6); | |
2672 | ||
2673 | /* We can only support IPV4 TSO in tunnels if we can mangle the | |
2674 | * inner IP ID field, so strip TSO if MANGLEID is not supported. | |
2675 | */ | |
2676 | if (skb->encapsulation && !(features & NETIF_F_TSO_MANGLEID)) | |
2677 | features &= ~NETIF_F_TSO; | |
2678 | ||
2679 | return features; | |
2680 | } | |
2681 | ||
d4e0fe01 | 2682 | static const struct net_device_ops igbvf_netdev_ops = { |
0340501b JK |
2683 | .ndo_open = igbvf_open, |
2684 | .ndo_stop = igbvf_close, | |
2685 | .ndo_start_xmit = igbvf_xmit_frame, | |
4827cc37 | 2686 | .ndo_set_rx_mode = igbvf_set_rx_mode, |
0340501b JK |
2687 | .ndo_set_mac_address = igbvf_set_mac, |
2688 | .ndo_change_mtu = igbvf_change_mtu, | |
a7605370 | 2689 | .ndo_eth_ioctl = igbvf_ioctl, |
0340501b JK |
2690 | .ndo_tx_timeout = igbvf_tx_timeout, |
2691 | .ndo_vlan_rx_add_vid = igbvf_vlan_rx_add_vid, | |
2692 | .ndo_vlan_rx_kill_vid = igbvf_vlan_rx_kill_vid, | |
d4e0fe01 | 2693 | #ifdef CONFIG_NET_POLL_CONTROLLER |
0340501b | 2694 | .ndo_poll_controller = igbvf_netpoll, |
d4e0fe01 | 2695 | #endif |
0340501b | 2696 | .ndo_set_features = igbvf_set_features, |
e10715d3 | 2697 | .ndo_features_check = igbvf_features_check, |
d4e0fe01 AD |
2698 | }; |
2699 | ||
2700 | /** | |
2701 | * igbvf_probe - Device Initialization Routine | |
2702 | * @pdev: PCI device information struct | |
2703 | * @ent: entry in igbvf_pci_tbl | |
2704 | * | |
2705 | * Returns 0 on success, negative on failure | |
2706 | * | |
2707 | * igbvf_probe initializes an adapter identified by a pci_dev structure. | |
2708 | * The OS initialization, configuring of the adapter private structure, | |
2709 | * and a hardware reset occur. | |
2710 | **/ | |
1dd06ae8 | 2711 | static int igbvf_probe(struct pci_dev *pdev, const struct pci_device_id *ent) |
d4e0fe01 AD |
2712 | { |
2713 | struct net_device *netdev; | |
2714 | struct igbvf_adapter *adapter; | |
2715 | struct e1000_hw *hw; | |
2716 | const struct igbvf_info *ei = igbvf_info_tbl[ent->driver_data]; | |
d4e0fe01 | 2717 | static int cards_found; |
ac917892 | 2718 | int err; |
d4e0fe01 AD |
2719 | |
2720 | err = pci_enable_device_mem(pdev); | |
2721 | if (err) | |
2722 | return err; | |
2723 | ||
c21b8ebc | 2724 | err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); |
ac917892 CJ |
2725 | if (err) { |
2726 | dev_err(&pdev->dev, | |
2727 | "No usable DMA configuration, aborting\n"); | |
2728 | goto err_dma; | |
d4e0fe01 AD |
2729 | } |
2730 | ||
2731 | err = pci_request_regions(pdev, igbvf_driver_name); | |
2732 | if (err) | |
2733 | goto err_pci_reg; | |
2734 | ||
2735 | pci_set_master(pdev); | |
2736 | ||
2737 | err = -ENOMEM; | |
2738 | netdev = alloc_etherdev(sizeof(struct igbvf_adapter)); | |
2739 | if (!netdev) | |
2740 | goto err_alloc_etherdev; | |
2741 | ||
2742 | SET_NETDEV_DEV(netdev, &pdev->dev); | |
2743 | ||
2744 | pci_set_drvdata(pdev, netdev); | |
2745 | adapter = netdev_priv(netdev); | |
2746 | hw = &adapter->hw; | |
2747 | adapter->netdev = netdev; | |
2748 | adapter->pdev = pdev; | |
2749 | adapter->ei = ei; | |
2750 | adapter->pba = ei->pba; | |
2751 | adapter->flags = ei->flags; | |
2752 | adapter->hw.back = adapter; | |
2753 | adapter->hw.mac.type = ei->mac; | |
b3f4d599 | 2754 | adapter->msg_enable = netif_msg_init(debug, DEFAULT_MSG_ENABLE); |
d4e0fe01 AD |
2755 | |
2756 | /* PCI config space info */ | |
2757 | ||
2758 | hw->vendor_id = pdev->vendor; | |
2759 | hw->device_id = pdev->device; | |
2760 | hw->subsystem_vendor_id = pdev->subsystem_vendor; | |
2761 | hw->subsystem_device_id = pdev->subsystem_device; | |
ff938e43 | 2762 | hw->revision_id = pdev->revision; |
d4e0fe01 AD |
2763 | |
2764 | err = -EIO; | |
2765 | adapter->hw.hw_addr = ioremap(pci_resource_start(pdev, 0), | |
0340501b | 2766 | pci_resource_len(pdev, 0)); |
d4e0fe01 AD |
2767 | |
2768 | if (!adapter->hw.hw_addr) | |
2769 | goto err_ioremap; | |
2770 | ||
2771 | if (ei->get_variants) { | |
2772 | err = ei->get_variants(adapter); | |
2773 | if (err) | |
de524681 | 2774 | goto err_get_variants; |
d4e0fe01 AD |
2775 | } |
2776 | ||
2777 | /* setup adapter struct */ | |
2778 | err = igbvf_sw_init(adapter); | |
2779 | if (err) | |
2780 | goto err_sw_init; | |
2781 | ||
2782 | /* construct the net_device struct */ | |
2783 | netdev->netdev_ops = &igbvf_netdev_ops; | |
2784 | ||
2785 | igbvf_set_ethtool_ops(netdev); | |
2786 | netdev->watchdog_timeo = 5 * HZ; | |
a6c78d5f | 2787 | strscpy(netdev->name, pci_name(pdev), sizeof(netdev->name)); |
d4e0fe01 AD |
2788 | |
2789 | adapter->bd_number = cards_found++; | |
2790 | ||
fd38f734 | 2791 | netdev->hw_features = NETIF_F_SG | |
ea6ce602 AD |
2792 | NETIF_F_TSO | |
2793 | NETIF_F_TSO6 | | |
2794 | NETIF_F_RXCSUM | | |
2795 | NETIF_F_HW_CSUM | | |
2796 | NETIF_F_SCTP_CRC; | |
fd38f734 | 2797 | |
e10715d3 AD |
2798 | #define IGBVF_GSO_PARTIAL_FEATURES (NETIF_F_GSO_GRE | \ |
2799 | NETIF_F_GSO_GRE_CSUM | \ | |
7e13318d | 2800 | NETIF_F_GSO_IPXIP4 | \ |
bf2d1df3 | 2801 | NETIF_F_GSO_IPXIP6 | \ |
e10715d3 AD |
2802 | NETIF_F_GSO_UDP_TUNNEL | \ |
2803 | NETIF_F_GSO_UDP_TUNNEL_CSUM) | |
2804 | ||
2805 | netdev->gso_partial_features = IGBVF_GSO_PARTIAL_FEATURES; | |
2806 | netdev->hw_features |= NETIF_F_GSO_PARTIAL | | |
2807 | IGBVF_GSO_PARTIAL_FEATURES; | |
2808 | ||
ac917892 | 2809 | netdev->features = netdev->hw_features | NETIF_F_HIGHDMA; |
d4e0fe01 | 2810 | |
e10715d3 | 2811 | netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID; |
ea6ce602 | 2812 | netdev->mpls_features |= NETIF_F_HW_CSUM; |
e10715d3 AD |
2813 | netdev->hw_enc_features |= netdev->vlan_features; |
2814 | ||
2815 | /* set this bit last since it cannot be part of vlan_features */ | |
2816 | netdev->features |= NETIF_F_HW_VLAN_CTAG_FILTER | | |
2817 | NETIF_F_HW_VLAN_CTAG_RX | | |
2818 | NETIF_F_HW_VLAN_CTAG_TX; | |
d4e0fe01 | 2819 | |
91c527a5 JW |
2820 | /* MTU range: 68 - 9216 */ |
2821 | netdev->min_mtu = ETH_MIN_MTU; | |
2822 | netdev->max_mtu = MAX_STD_JUMBO_FRAME_SIZE; | |
2823 | ||
32652c2a GE |
2824 | spin_lock_bh(&hw->mbx_lock); |
2825 | ||
d4e0fe01 AD |
2826 | /*reset the controller to put the device in a known good state */ |
2827 | err = hw->mac.ops.reset_hw(hw); | |
2828 | if (err) { | |
2829 | dev_info(&pdev->dev, | |
8d56b6d5 | 2830 | "PF still in reset state. Is the PF interface up?\n"); |
d4e0fe01 AD |
2831 | } else { |
2832 | err = hw->mac.ops.read_mac_addr(hw); | |
8d56b6d5 MW |
2833 | if (err) |
2834 | dev_info(&pdev->dev, "Error reading MAC address.\n"); | |
2835 | else if (is_zero_ether_addr(adapter->hw.mac.addr)) | |
0340501b JK |
2836 | dev_info(&pdev->dev, |
2837 | "MAC address not assigned by administrator.\n"); | |
a05e4c0a | 2838 | eth_hw_addr_set(netdev, adapter->hw.mac.addr); |
d4e0fe01 AD |
2839 | } |
2840 | ||
32652c2a GE |
2841 | spin_unlock_bh(&hw->mbx_lock); |
2842 | ||
9bd1be45 | 2843 | if (!is_valid_ether_addr(netdev->dev_addr)) { |
8d56b6d5 MW |
2844 | dev_info(&pdev->dev, "Assigning random MAC address.\n"); |
2845 | eth_hw_addr_random(netdev); | |
2846 | memcpy(adapter->hw.mac.addr, netdev->dev_addr, | |
0340501b | 2847 | netdev->addr_len); |
d4e0fe01 AD |
2848 | } |
2849 | ||
26566eae | 2850 | timer_setup(&adapter->watchdog_timer, igbvf_watchdog, 0); |
d4e0fe01 AD |
2851 | |
2852 | INIT_WORK(&adapter->reset_task, igbvf_reset_task); | |
2853 | INIT_WORK(&adapter->watchdog_task, igbvf_watchdog_task); | |
2854 | ||
2855 | /* ring size defaults */ | |
2856 | adapter->rx_ring->count = 1024; | |
2857 | adapter->tx_ring->count = 1024; | |
2858 | ||
2859 | /* reset the hardware with the new settings */ | |
2860 | igbvf_reset(adapter); | |
2861 | ||
2c1a1019 MW |
2862 | /* set hardware-specific flags */ |
2863 | if (adapter->hw.mac.type == e1000_vfadapt_i350) | |
2864 | adapter->flags |= IGBVF_FLAG_RX_LB_VLAN_BSWAP; | |
2865 | ||
d4e0fe01 AD |
2866 | strcpy(netdev->name, "eth%d"); |
2867 | err = register_netdev(netdev); | |
2868 | if (err) | |
2869 | goto err_hw_init; | |
2870 | ||
de7fe787 ET |
2871 | /* tell the stack to leave us alone until igbvf_open() is called */ |
2872 | netif_carrier_off(netdev); | |
2873 | netif_stop_queue(netdev); | |
2874 | ||
d4e0fe01 AD |
2875 | igbvf_print_device_info(adapter); |
2876 | ||
2877 | igbvf_initialize_last_counter_stats(adapter); | |
2878 | ||
2879 | return 0; | |
2880 | ||
2881 | err_hw_init: | |
b6d335a6 | 2882 | netif_napi_del(&adapter->rx_ring->napi); |
d4e0fe01 AD |
2883 | kfree(adapter->tx_ring); |
2884 | kfree(adapter->rx_ring); | |
2885 | err_sw_init: | |
2886 | igbvf_reset_interrupt_capability(adapter); | |
de524681 | 2887 | err_get_variants: |
d4e0fe01 AD |
2888 | iounmap(adapter->hw.hw_addr); |
2889 | err_ioremap: | |
2890 | free_netdev(netdev); | |
2891 | err_alloc_etherdev: | |
2892 | pci_release_regions(pdev); | |
2893 | err_pci_reg: | |
2894 | err_dma: | |
2895 | pci_disable_device(pdev); | |
2896 | return err; | |
2897 | } | |
2898 | ||
2899 | /** | |
2900 | * igbvf_remove - Device Removal Routine | |
2901 | * @pdev: PCI device information struct | |
2902 | * | |
2903 | * igbvf_remove is called by the PCI subsystem to alert the driver | |
2904 | * that it should release a PCI device. The could be caused by a | |
2905 | * Hot-Plug event, or because the driver is going to be removed from | |
2906 | * memory. | |
2907 | **/ | |
9f9a12f8 | 2908 | static void igbvf_remove(struct pci_dev *pdev) |
d4e0fe01 AD |
2909 | { |
2910 | struct net_device *netdev = pci_get_drvdata(pdev); | |
2911 | struct igbvf_adapter *adapter = netdev_priv(netdev); | |
2912 | struct e1000_hw *hw = &adapter->hw; | |
2913 | ||
0340501b | 2914 | /* The watchdog timer may be rescheduled, so explicitly |
760141a5 | 2915 | * disable it from being rescheduled. |
d4e0fe01 AD |
2916 | */ |
2917 | set_bit(__IGBVF_DOWN, &adapter->state); | |
2918 | del_timer_sync(&adapter->watchdog_timer); | |
2919 | ||
760141a5 TH |
2920 | cancel_work_sync(&adapter->reset_task); |
2921 | cancel_work_sync(&adapter->watchdog_task); | |
d4e0fe01 AD |
2922 | |
2923 | unregister_netdev(netdev); | |
2924 | ||
2925 | igbvf_reset_interrupt_capability(adapter); | |
2926 | ||
0340501b JK |
2927 | /* it is important to delete the NAPI struct prior to freeing the |
2928 | * Rx ring so that you do not end up with null pointer refs | |
d4e0fe01 AD |
2929 | */ |
2930 | netif_napi_del(&adapter->rx_ring->napi); | |
2931 | kfree(adapter->tx_ring); | |
2932 | kfree(adapter->rx_ring); | |
2933 | ||
2934 | iounmap(hw->hw_addr); | |
2935 | if (hw->flash_address) | |
2936 | iounmap(hw->flash_address); | |
2937 | pci_release_regions(pdev); | |
2938 | ||
2939 | free_netdev(netdev); | |
2940 | ||
2941 | pci_disable_device(pdev); | |
2942 | } | |
2943 | ||
2944 | /* PCI Error Recovery (ERS) */ | |
3646f0e5 | 2945 | static const struct pci_error_handlers igbvf_err_handler = { |
d4e0fe01 AD |
2946 | .error_detected = igbvf_io_error_detected, |
2947 | .slot_reset = igbvf_io_slot_reset, | |
2948 | .resume = igbvf_io_resume, | |
5a9b7bfb DW |
2949 | .reset_prepare = igbvf_io_prepare, |
2950 | .reset_done = igbvf_io_reset_done, | |
d4e0fe01 AD |
2951 | }; |
2952 | ||
9baa3c34 | 2953 | static const struct pci_device_id igbvf_pci_tbl[] = { |
d4e0fe01 | 2954 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82576_VF), board_vf }, |
031d7952 | 2955 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_I350_VF), board_i350_vf }, |
d4e0fe01 AD |
2956 | { } /* terminate list */ |
2957 | }; | |
2958 | MODULE_DEVICE_TABLE(pci, igbvf_pci_tbl); | |
2959 | ||
75a3f93b | 2960 | static DEFINE_SIMPLE_DEV_PM_OPS(igbvf_pm_ops, igbvf_suspend, igbvf_resume); |
e9c971bd | 2961 | |
d4e0fe01 AD |
2962 | /* PCI Device API Driver */ |
2963 | static struct pci_driver igbvf_driver = { | |
0340501b JK |
2964 | .name = igbvf_driver_name, |
2965 | .id_table = igbvf_pci_tbl, | |
2966 | .probe = igbvf_probe, | |
2967 | .remove = igbvf_remove, | |
75a3f93b | 2968 | .driver.pm = pm_sleep_ptr(&igbvf_pm_ops), |
0340501b JK |
2969 | .shutdown = igbvf_shutdown, |
2970 | .err_handler = &igbvf_err_handler | |
d4e0fe01 AD |
2971 | }; |
2972 | ||
2973 | /** | |
2974 | * igbvf_init_module - Driver Registration Routine | |
2975 | * | |
2976 | * igbvf_init_module is the first routine called when the driver is | |
2977 | * loaded. All it does is register with the PCI subsystem. | |
2978 | **/ | |
2979 | static int __init igbvf_init_module(void) | |
2980 | { | |
2981 | int ret; | |
0340501b | 2982 | |
34a2a3b8 | 2983 | pr_info("%s\n", igbvf_driver_string); |
a4ba8cbe | 2984 | pr_info("%s\n", igbvf_copyright); |
d4e0fe01 AD |
2985 | |
2986 | ret = pci_register_driver(&igbvf_driver); | |
d4e0fe01 AD |
2987 | |
2988 | return ret; | |
2989 | } | |
2990 | module_init(igbvf_init_module); | |
2991 | ||
2992 | /** | |
2993 | * igbvf_exit_module - Driver Exit Cleanup Routine | |
2994 | * | |
2995 | * igbvf_exit_module is called just before the driver is removed | |
2996 | * from memory. | |
2997 | **/ | |
2998 | static void __exit igbvf_exit_module(void) | |
2999 | { | |
3000 | pci_unregister_driver(&igbvf_driver); | |
d4e0fe01 AD |
3001 | } |
3002 | module_exit(igbvf_exit_module); | |
3003 | ||
10090751 | 3004 | MODULE_DESCRIPTION("Intel(R) Gigabit Virtual Function Network Driver"); |
98674ebe | 3005 | MODULE_LICENSE("GPL v2"); |
d4e0fe01 AD |
3006 | |
3007 | /* netdev.c */ |