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bc7f75fa AK |
1 | /******************************************************************************* |
2 | ||
3 | Intel PRO/1000 Linux driver | |
451152d9 | 4 | Copyright(c) 1999 - 2010 Intel Corporation. |
bc7f75fa AK |
5 | |
6 | This program is free software; you can redistribute it and/or modify it | |
7 | under the terms and conditions of the GNU General Public License, | |
8 | version 2, as published by the Free Software Foundation. | |
9 | ||
10 | This program is distributed in the hope it will be useful, but WITHOUT | |
11 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for | |
13 | more details. | |
14 | ||
15 | You should have received a copy of the GNU General Public License along with | |
16 | this program; if not, write to the Free Software Foundation, Inc., | |
17 | 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA. | |
18 | ||
19 | The full GNU General Public License is included in this distribution in | |
20 | the file called "COPYING". | |
21 | ||
22 | Contact Information: | |
23 | Linux NICS <linux.nics@intel.com> | |
24 | e1000-devel Mailing List <e1000-devel@lists.sourceforge.net> | |
25 | Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 | |
26 | ||
27 | *******************************************************************************/ | |
28 | ||
8544b9f7 BA |
29 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
30 | ||
bc7f75fa AK |
31 | #include <linux/module.h> |
32 | #include <linux/types.h> | |
33 | #include <linux/init.h> | |
34 | #include <linux/pci.h> | |
35 | #include <linux/vmalloc.h> | |
36 | #include <linux/pagemap.h> | |
37 | #include <linux/delay.h> | |
38 | #include <linux/netdevice.h> | |
39 | #include <linux/tcp.h> | |
40 | #include <linux/ipv6.h> | |
5a0e3ad6 | 41 | #include <linux/slab.h> |
bc7f75fa AK |
42 | #include <net/checksum.h> |
43 | #include <net/ip6_checksum.h> | |
44 | #include <linux/mii.h> | |
45 | #include <linux/ethtool.h> | |
46 | #include <linux/if_vlan.h> | |
47 | #include <linux/cpu.h> | |
48 | #include <linux/smp.h> | |
97ac8cae | 49 | #include <linux/pm_qos_params.h> |
23606cf5 | 50 | #include <linux/pm_runtime.h> |
111b9dc5 | 51 | #include <linux/aer.h> |
bc7f75fa AK |
52 | |
53 | #include "e1000.h" | |
54 | ||
c14c643b BA |
55 | #define DRV_EXTRAVERSION "-k2" |
56 | ||
57 | #define DRV_VERSION "1.2.7" DRV_EXTRAVERSION | |
bc7f75fa AK |
58 | char e1000e_driver_name[] = "e1000e"; |
59 | const char e1000e_driver_version[] = DRV_VERSION; | |
60 | ||
61 | static const struct e1000_info *e1000_info_tbl[] = { | |
62 | [board_82571] = &e1000_82571_info, | |
63 | [board_82572] = &e1000_82572_info, | |
64 | [board_82573] = &e1000_82573_info, | |
4662e82b | 65 | [board_82574] = &e1000_82574_info, |
8c81c9c3 | 66 | [board_82583] = &e1000_82583_info, |
bc7f75fa AK |
67 | [board_80003es2lan] = &e1000_es2_info, |
68 | [board_ich8lan] = &e1000_ich8_info, | |
69 | [board_ich9lan] = &e1000_ich9_info, | |
f4187b56 | 70 | [board_ich10lan] = &e1000_ich10_info, |
a4f58f54 | 71 | [board_pchlan] = &e1000_pch_info, |
d3738bb8 | 72 | [board_pch2lan] = &e1000_pch2_info, |
bc7f75fa AK |
73 | }; |
74 | ||
84f4ee90 TI |
75 | struct e1000_reg_info { |
76 | u32 ofs; | |
77 | char *name; | |
78 | }; | |
79 | ||
80 | #define E1000_RDFH 0x02410 /* Rx Data FIFO Head - RW */ | |
81 | #define E1000_RDFT 0x02418 /* Rx Data FIFO Tail - RW */ | |
82 | #define E1000_RDFHS 0x02420 /* Rx Data FIFO Head Saved - RW */ | |
83 | #define E1000_RDFTS 0x02428 /* Rx Data FIFO Tail Saved - RW */ | |
84 | #define E1000_RDFPC 0x02430 /* Rx Data FIFO Packet Count - RW */ | |
85 | ||
86 | #define E1000_TDFH 0x03410 /* Tx Data FIFO Head - RW */ | |
87 | #define E1000_TDFT 0x03418 /* Tx Data FIFO Tail - RW */ | |
88 | #define E1000_TDFHS 0x03420 /* Tx Data FIFO Head Saved - RW */ | |
89 | #define E1000_TDFTS 0x03428 /* Tx Data FIFO Tail Saved - RW */ | |
90 | #define E1000_TDFPC 0x03430 /* Tx Data FIFO Packet Count - RW */ | |
91 | ||
92 | static const struct e1000_reg_info e1000_reg_info_tbl[] = { | |
93 | ||
94 | /* General Registers */ | |
95 | {E1000_CTRL, "CTRL"}, | |
96 | {E1000_STATUS, "STATUS"}, | |
97 | {E1000_CTRL_EXT, "CTRL_EXT"}, | |
98 | ||
99 | /* Interrupt Registers */ | |
100 | {E1000_ICR, "ICR"}, | |
101 | ||
102 | /* RX Registers */ | |
103 | {E1000_RCTL, "RCTL"}, | |
104 | {E1000_RDLEN, "RDLEN"}, | |
105 | {E1000_RDH, "RDH"}, | |
106 | {E1000_RDT, "RDT"}, | |
107 | {E1000_RDTR, "RDTR"}, | |
108 | {E1000_RXDCTL(0), "RXDCTL"}, | |
109 | {E1000_ERT, "ERT"}, | |
110 | {E1000_RDBAL, "RDBAL"}, | |
111 | {E1000_RDBAH, "RDBAH"}, | |
112 | {E1000_RDFH, "RDFH"}, | |
113 | {E1000_RDFT, "RDFT"}, | |
114 | {E1000_RDFHS, "RDFHS"}, | |
115 | {E1000_RDFTS, "RDFTS"}, | |
116 | {E1000_RDFPC, "RDFPC"}, | |
117 | ||
118 | /* TX Registers */ | |
119 | {E1000_TCTL, "TCTL"}, | |
120 | {E1000_TDBAL, "TDBAL"}, | |
121 | {E1000_TDBAH, "TDBAH"}, | |
122 | {E1000_TDLEN, "TDLEN"}, | |
123 | {E1000_TDH, "TDH"}, | |
124 | {E1000_TDT, "TDT"}, | |
125 | {E1000_TIDV, "TIDV"}, | |
126 | {E1000_TXDCTL(0), "TXDCTL"}, | |
127 | {E1000_TADV, "TADV"}, | |
128 | {E1000_TARC(0), "TARC"}, | |
129 | {E1000_TDFH, "TDFH"}, | |
130 | {E1000_TDFT, "TDFT"}, | |
131 | {E1000_TDFHS, "TDFHS"}, | |
132 | {E1000_TDFTS, "TDFTS"}, | |
133 | {E1000_TDFPC, "TDFPC"}, | |
134 | ||
135 | /* List Terminator */ | |
136 | {} | |
137 | }; | |
138 | ||
139 | /* | |
140 | * e1000_regdump - register printout routine | |
141 | */ | |
142 | static void e1000_regdump(struct e1000_hw *hw, struct e1000_reg_info *reginfo) | |
143 | { | |
144 | int n = 0; | |
145 | char rname[16]; | |
146 | u32 regs[8]; | |
147 | ||
148 | switch (reginfo->ofs) { | |
149 | case E1000_RXDCTL(0): | |
150 | for (n = 0; n < 2; n++) | |
151 | regs[n] = __er32(hw, E1000_RXDCTL(n)); | |
152 | break; | |
153 | case E1000_TXDCTL(0): | |
154 | for (n = 0; n < 2; n++) | |
155 | regs[n] = __er32(hw, E1000_TXDCTL(n)); | |
156 | break; | |
157 | case E1000_TARC(0): | |
158 | for (n = 0; n < 2; n++) | |
159 | regs[n] = __er32(hw, E1000_TARC(n)); | |
160 | break; | |
161 | default: | |
162 | printk(KERN_INFO "%-15s %08x\n", | |
163 | reginfo->name, __er32(hw, reginfo->ofs)); | |
164 | return; | |
165 | } | |
166 | ||
167 | snprintf(rname, 16, "%s%s", reginfo->name, "[0-1]"); | |
168 | printk(KERN_INFO "%-15s ", rname); | |
169 | for (n = 0; n < 2; n++) | |
170 | printk(KERN_CONT "%08x ", regs[n]); | |
171 | printk(KERN_CONT "\n"); | |
172 | } | |
173 | ||
174 | ||
175 | /* | |
176 | * e1000e_dump - Print registers, tx-ring and rx-ring | |
177 | */ | |
178 | static void e1000e_dump(struct e1000_adapter *adapter) | |
179 | { | |
180 | struct net_device *netdev = adapter->netdev; | |
181 | struct e1000_hw *hw = &adapter->hw; | |
182 | struct e1000_reg_info *reginfo; | |
183 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
184 | struct e1000_tx_desc *tx_desc; | |
185 | struct my_u0 { u64 a; u64 b; } *u0; | |
186 | struct e1000_buffer *buffer_info; | |
187 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
188 | union e1000_rx_desc_packet_split *rx_desc_ps; | |
189 | struct e1000_rx_desc *rx_desc; | |
190 | struct my_u1 { u64 a; u64 b; u64 c; u64 d; } *u1; | |
191 | u32 staterr; | |
192 | int i = 0; | |
193 | ||
194 | if (!netif_msg_hw(adapter)) | |
195 | return; | |
196 | ||
197 | /* Print netdevice Info */ | |
198 | if (netdev) { | |
199 | dev_info(&adapter->pdev->dev, "Net device Info\n"); | |
200 | printk(KERN_INFO "Device Name state " | |
201 | "trans_start last_rx\n"); | |
202 | printk(KERN_INFO "%-15s %016lX %016lX %016lX\n", | |
203 | netdev->name, | |
204 | netdev->state, | |
205 | netdev->trans_start, | |
206 | netdev->last_rx); | |
207 | } | |
208 | ||
209 | /* Print Registers */ | |
210 | dev_info(&adapter->pdev->dev, "Register Dump\n"); | |
211 | printk(KERN_INFO " Register Name Value\n"); | |
212 | for (reginfo = (struct e1000_reg_info *)e1000_reg_info_tbl; | |
213 | reginfo->name; reginfo++) { | |
214 | e1000_regdump(hw, reginfo); | |
215 | } | |
216 | ||
217 | /* Print TX Ring Summary */ | |
218 | if (!netdev || !netif_running(netdev)) | |
219 | goto exit; | |
220 | ||
221 | dev_info(&adapter->pdev->dev, "TX Rings Summary\n"); | |
222 | printk(KERN_INFO "Queue [NTU] [NTC] [bi(ntc)->dma ]" | |
223 | " leng ntw timestamp\n"); | |
224 | buffer_info = &tx_ring->buffer_info[tx_ring->next_to_clean]; | |
225 | printk(KERN_INFO " %5d %5X %5X %016llX %04X %3X %016llX\n", | |
226 | 0, tx_ring->next_to_use, tx_ring->next_to_clean, | |
8eb64e6b | 227 | (unsigned long long)buffer_info->dma, |
84f4ee90 TI |
228 | buffer_info->length, |
229 | buffer_info->next_to_watch, | |
8eb64e6b | 230 | (unsigned long long)buffer_info->time_stamp); |
84f4ee90 TI |
231 | |
232 | /* Print TX Rings */ | |
233 | if (!netif_msg_tx_done(adapter)) | |
234 | goto rx_ring_summary; | |
235 | ||
236 | dev_info(&adapter->pdev->dev, "TX Rings Dump\n"); | |
237 | ||
238 | /* Transmit Descriptor Formats - DEXT[29] is 0 (Legacy) or 1 (Extended) | |
239 | * | |
240 | * Legacy Transmit Descriptor | |
241 | * +--------------------------------------------------------------+ | |
242 | * 0 | Buffer Address [63:0] (Reserved on Write Back) | | |
243 | * +--------------------------------------------------------------+ | |
244 | * 8 | Special | CSS | Status | CMD | CSO | Length | | |
245 | * +--------------------------------------------------------------+ | |
246 | * 63 48 47 36 35 32 31 24 23 16 15 0 | |
247 | * | |
248 | * Extended Context Descriptor (DTYP=0x0) for TSO or checksum offload | |
249 | * 63 48 47 40 39 32 31 16 15 8 7 0 | |
250 | * +----------------------------------------------------------------+ | |
251 | * 0 | TUCSE | TUCS0 | TUCSS | IPCSE | IPCS0 | IPCSS | | |
252 | * +----------------------------------------------------------------+ | |
253 | * 8 | MSS | HDRLEN | RSV | STA | TUCMD | DTYP | PAYLEN | | |
254 | * +----------------------------------------------------------------+ | |
255 | * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 | |
256 | * | |
257 | * Extended Data Descriptor (DTYP=0x1) | |
258 | * +----------------------------------------------------------------+ | |
259 | * 0 | Buffer Address [63:0] | | |
260 | * +----------------------------------------------------------------+ | |
261 | * 8 | VLAN tag | POPTS | Rsvd | Status | Command | DTYP | DTALEN | | |
262 | * +----------------------------------------------------------------+ | |
263 | * 63 48 47 40 39 36 35 32 31 24 23 20 19 0 | |
264 | */ | |
265 | printk(KERN_INFO "Tl[desc] [address 63:0 ] [SpeCssSCmCsLen]" | |
266 | " [bi->dma ] leng ntw timestamp bi->skb " | |
267 | "<-- Legacy format\n"); | |
268 | printk(KERN_INFO "Tc[desc] [Ce CoCsIpceCoS] [MssHlRSCm0Plen]" | |
269 | " [bi->dma ] leng ntw timestamp bi->skb " | |
270 | "<-- Ext Context format\n"); | |
271 | printk(KERN_INFO "Td[desc] [address 63:0 ] [VlaPoRSCm1Dlen]" | |
272 | " [bi->dma ] leng ntw timestamp bi->skb " | |
273 | "<-- Ext Data format\n"); | |
274 | for (i = 0; tx_ring->desc && (i < tx_ring->count); i++) { | |
275 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
276 | buffer_info = &tx_ring->buffer_info[i]; | |
277 | u0 = (struct my_u0 *)tx_desc; | |
278 | printk(KERN_INFO "T%c[0x%03X] %016llX %016llX %016llX " | |
279 | "%04X %3X %016llX %p", | |
280 | (!(le64_to_cpu(u0->b) & (1<<29)) ? 'l' : | |
281 | ((le64_to_cpu(u0->b) & (1<<20)) ? 'd' : 'c')), i, | |
8eb64e6b BA |
282 | (unsigned long long)le64_to_cpu(u0->a), |
283 | (unsigned long long)le64_to_cpu(u0->b), | |
284 | (unsigned long long)buffer_info->dma, | |
285 | buffer_info->length, buffer_info->next_to_watch, | |
286 | (unsigned long long)buffer_info->time_stamp, | |
84f4ee90 TI |
287 | buffer_info->skb); |
288 | if (i == tx_ring->next_to_use && i == tx_ring->next_to_clean) | |
289 | printk(KERN_CONT " NTC/U\n"); | |
290 | else if (i == tx_ring->next_to_use) | |
291 | printk(KERN_CONT " NTU\n"); | |
292 | else if (i == tx_ring->next_to_clean) | |
293 | printk(KERN_CONT " NTC\n"); | |
294 | else | |
295 | printk(KERN_CONT "\n"); | |
296 | ||
297 | if (netif_msg_pktdata(adapter) && buffer_info->dma != 0) | |
298 | print_hex_dump(KERN_INFO, "", DUMP_PREFIX_ADDRESS, | |
299 | 16, 1, phys_to_virt(buffer_info->dma), | |
300 | buffer_info->length, true); | |
301 | } | |
302 | ||
303 | /* Print RX Rings Summary */ | |
304 | rx_ring_summary: | |
305 | dev_info(&adapter->pdev->dev, "RX Rings Summary\n"); | |
306 | printk(KERN_INFO "Queue [NTU] [NTC]\n"); | |
307 | printk(KERN_INFO " %5d %5X %5X\n", 0, | |
308 | rx_ring->next_to_use, rx_ring->next_to_clean); | |
309 | ||
310 | /* Print RX Rings */ | |
311 | if (!netif_msg_rx_status(adapter)) | |
312 | goto exit; | |
313 | ||
314 | dev_info(&adapter->pdev->dev, "RX Rings Dump\n"); | |
315 | switch (adapter->rx_ps_pages) { | |
316 | case 1: | |
317 | case 2: | |
318 | case 3: | |
319 | /* [Extended] Packet Split Receive Descriptor Format | |
320 | * | |
321 | * +-----------------------------------------------------+ | |
322 | * 0 | Buffer Address 0 [63:0] | | |
323 | * +-----------------------------------------------------+ | |
324 | * 8 | Buffer Address 1 [63:0] | | |
325 | * +-----------------------------------------------------+ | |
326 | * 16 | Buffer Address 2 [63:0] | | |
327 | * +-----------------------------------------------------+ | |
328 | * 24 | Buffer Address 3 [63:0] | | |
329 | * +-----------------------------------------------------+ | |
330 | */ | |
331 | printk(KERN_INFO "R [desc] [buffer 0 63:0 ] " | |
332 | "[buffer 1 63:0 ] " | |
333 | "[buffer 2 63:0 ] [buffer 3 63:0 ] [bi->dma ] " | |
334 | "[bi->skb] <-- Ext Pkt Split format\n"); | |
335 | /* [Extended] Receive Descriptor (Write-Back) Format | |
336 | * | |
337 | * 63 48 47 32 31 13 12 8 7 4 3 0 | |
338 | * +------------------------------------------------------+ | |
339 | * 0 | Packet | IP | Rsvd | MRQ | Rsvd | MRQ RSS | | |
340 | * | Checksum | Ident | | Queue | | Type | | |
341 | * +------------------------------------------------------+ | |
342 | * 8 | VLAN Tag | Length | Extended Error | Extended Status | | |
343 | * +------------------------------------------------------+ | |
344 | * 63 48 47 32 31 20 19 0 | |
345 | */ | |
346 | printk(KERN_INFO "RWB[desc] [ck ipid mrqhsh] " | |
347 | "[vl l0 ee es] " | |
348 | "[ l3 l2 l1 hs] [reserved ] ---------------- " | |
349 | "[bi->skb] <-- Ext Rx Write-Back format\n"); | |
350 | for (i = 0; i < rx_ring->count; i++) { | |
351 | buffer_info = &rx_ring->buffer_info[i]; | |
352 | rx_desc_ps = E1000_RX_DESC_PS(*rx_ring, i); | |
353 | u1 = (struct my_u1 *)rx_desc_ps; | |
354 | staterr = | |
355 | le32_to_cpu(rx_desc_ps->wb.middle.status_error); | |
356 | if (staterr & E1000_RXD_STAT_DD) { | |
357 | /* Descriptor Done */ | |
358 | printk(KERN_INFO "RWB[0x%03X] %016llX " | |
359 | "%016llX %016llX %016llX " | |
360 | "---------------- %p", i, | |
8eb64e6b BA |
361 | (unsigned long long)le64_to_cpu(u1->a), |
362 | (unsigned long long)le64_to_cpu(u1->b), | |
363 | (unsigned long long)le64_to_cpu(u1->c), | |
364 | (unsigned long long)le64_to_cpu(u1->d), | |
84f4ee90 TI |
365 | buffer_info->skb); |
366 | } else { | |
367 | printk(KERN_INFO "R [0x%03X] %016llX " | |
368 | "%016llX %016llX %016llX %016llX %p", i, | |
8eb64e6b BA |
369 | (unsigned long long)le64_to_cpu(u1->a), |
370 | (unsigned long long)le64_to_cpu(u1->b), | |
371 | (unsigned long long)le64_to_cpu(u1->c), | |
372 | (unsigned long long)le64_to_cpu(u1->d), | |
373 | (unsigned long long)buffer_info->dma, | |
84f4ee90 TI |
374 | buffer_info->skb); |
375 | ||
376 | if (netif_msg_pktdata(adapter)) | |
377 | print_hex_dump(KERN_INFO, "", | |
378 | DUMP_PREFIX_ADDRESS, 16, 1, | |
379 | phys_to_virt(buffer_info->dma), | |
380 | adapter->rx_ps_bsize0, true); | |
381 | } | |
382 | ||
383 | if (i == rx_ring->next_to_use) | |
384 | printk(KERN_CONT " NTU\n"); | |
385 | else if (i == rx_ring->next_to_clean) | |
386 | printk(KERN_CONT " NTC\n"); | |
387 | else | |
388 | printk(KERN_CONT "\n"); | |
389 | } | |
390 | break; | |
391 | default: | |
392 | case 0: | |
393 | /* Legacy Receive Descriptor Format | |
394 | * | |
395 | * +-----------------------------------------------------+ | |
396 | * | Buffer Address [63:0] | | |
397 | * +-----------------------------------------------------+ | |
398 | * | VLAN Tag | Errors | Status 0 | Packet csum | Length | | |
399 | * +-----------------------------------------------------+ | |
400 | * 63 48 47 40 39 32 31 16 15 0 | |
401 | */ | |
402 | printk(KERN_INFO "Rl[desc] [address 63:0 ] " | |
403 | "[vl er S cks ln] [bi->dma ] [bi->skb] " | |
404 | "<-- Legacy format\n"); | |
405 | for (i = 0; rx_ring->desc && (i < rx_ring->count); i++) { | |
406 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
407 | buffer_info = &rx_ring->buffer_info[i]; | |
408 | u0 = (struct my_u0 *)rx_desc; | |
409 | printk(KERN_INFO "Rl[0x%03X] %016llX %016llX " | |
8eb64e6b BA |
410 | "%016llX %p", i, |
411 | (unsigned long long)le64_to_cpu(u0->a), | |
412 | (unsigned long long)le64_to_cpu(u0->b), | |
413 | (unsigned long long)buffer_info->dma, | |
414 | buffer_info->skb); | |
84f4ee90 TI |
415 | if (i == rx_ring->next_to_use) |
416 | printk(KERN_CONT " NTU\n"); | |
417 | else if (i == rx_ring->next_to_clean) | |
418 | printk(KERN_CONT " NTC\n"); | |
419 | else | |
420 | printk(KERN_CONT "\n"); | |
421 | ||
422 | if (netif_msg_pktdata(adapter)) | |
423 | print_hex_dump(KERN_INFO, "", | |
424 | DUMP_PREFIX_ADDRESS, | |
425 | 16, 1, phys_to_virt(buffer_info->dma), | |
426 | adapter->rx_buffer_len, true); | |
427 | } | |
428 | } | |
429 | ||
430 | exit: | |
431 | return; | |
432 | } | |
433 | ||
bc7f75fa AK |
434 | /** |
435 | * e1000_desc_unused - calculate if we have unused descriptors | |
436 | **/ | |
437 | static int e1000_desc_unused(struct e1000_ring *ring) | |
438 | { | |
439 | if (ring->next_to_clean > ring->next_to_use) | |
440 | return ring->next_to_clean - ring->next_to_use - 1; | |
441 | ||
442 | return ring->count + ring->next_to_clean - ring->next_to_use - 1; | |
443 | } | |
444 | ||
445 | /** | |
ad68076e | 446 | * e1000_receive_skb - helper function to handle Rx indications |
bc7f75fa AK |
447 | * @adapter: board private structure |
448 | * @status: descriptor status field as written by hardware | |
449 | * @vlan: descriptor vlan field as written by hardware (no le/be conversion) | |
450 | * @skb: pointer to sk_buff to be indicated to stack | |
451 | **/ | |
452 | static void e1000_receive_skb(struct e1000_adapter *adapter, | |
453 | struct net_device *netdev, | |
454 | struct sk_buff *skb, | |
a39fe742 | 455 | u8 status, __le16 vlan) |
bc7f75fa AK |
456 | { |
457 | skb->protocol = eth_type_trans(skb, netdev); | |
458 | ||
459 | if (adapter->vlgrp && (status & E1000_RXD_STAT_VP)) | |
c405b828 HX |
460 | vlan_gro_receive(&adapter->napi, adapter->vlgrp, |
461 | le16_to_cpu(vlan), skb); | |
bc7f75fa | 462 | else |
89c88b16 | 463 | napi_gro_receive(&adapter->napi, skb); |
bc7f75fa AK |
464 | } |
465 | ||
466 | /** | |
467 | * e1000_rx_checksum - Receive Checksum Offload for 82543 | |
468 | * @adapter: board private structure | |
469 | * @status_err: receive descriptor status and error fields | |
470 | * @csum: receive descriptor csum field | |
471 | * @sk_buff: socket buffer with received data | |
472 | **/ | |
473 | static void e1000_rx_checksum(struct e1000_adapter *adapter, u32 status_err, | |
474 | u32 csum, struct sk_buff *skb) | |
475 | { | |
476 | u16 status = (u16)status_err; | |
477 | u8 errors = (u8)(status_err >> 24); | |
478 | skb->ip_summed = CHECKSUM_NONE; | |
479 | ||
480 | /* Ignore Checksum bit is set */ | |
481 | if (status & E1000_RXD_STAT_IXSM) | |
482 | return; | |
483 | /* TCP/UDP checksum error bit is set */ | |
484 | if (errors & E1000_RXD_ERR_TCPE) { | |
485 | /* let the stack verify checksum errors */ | |
486 | adapter->hw_csum_err++; | |
487 | return; | |
488 | } | |
489 | ||
490 | /* TCP/UDP Checksum has not been calculated */ | |
491 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) | |
492 | return; | |
493 | ||
494 | /* It must be a TCP or UDP packet with a valid checksum */ | |
495 | if (status & E1000_RXD_STAT_TCPCS) { | |
496 | /* TCP checksum is good */ | |
497 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
498 | } else { | |
ad68076e BA |
499 | /* |
500 | * IP fragment with UDP payload | |
501 | * Hardware complements the payload checksum, so we undo it | |
bc7f75fa AK |
502 | * and then put the value in host order for further stack use. |
503 | */ | |
a39fe742 AV |
504 | __sum16 sum = (__force __sum16)htons(csum); |
505 | skb->csum = csum_unfold(~sum); | |
bc7f75fa AK |
506 | skb->ip_summed = CHECKSUM_COMPLETE; |
507 | } | |
508 | adapter->hw_csum_good++; | |
509 | } | |
510 | ||
511 | /** | |
512 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended | |
513 | * @adapter: address of board private structure | |
514 | **/ | |
515 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, | |
516 | int cleaned_count) | |
517 | { | |
518 | struct net_device *netdev = adapter->netdev; | |
519 | struct pci_dev *pdev = adapter->pdev; | |
520 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
521 | struct e1000_rx_desc *rx_desc; | |
522 | struct e1000_buffer *buffer_info; | |
523 | struct sk_buff *skb; | |
524 | unsigned int i; | |
89d71a66 | 525 | unsigned int bufsz = adapter->rx_buffer_len; |
bc7f75fa AK |
526 | |
527 | i = rx_ring->next_to_use; | |
528 | buffer_info = &rx_ring->buffer_info[i]; | |
529 | ||
530 | while (cleaned_count--) { | |
531 | skb = buffer_info->skb; | |
532 | if (skb) { | |
533 | skb_trim(skb, 0); | |
534 | goto map_skb; | |
535 | } | |
536 | ||
89d71a66 | 537 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
bc7f75fa AK |
538 | if (!skb) { |
539 | /* Better luck next round */ | |
540 | adapter->alloc_rx_buff_failed++; | |
541 | break; | |
542 | } | |
543 | ||
bc7f75fa AK |
544 | buffer_info->skb = skb; |
545 | map_skb: | |
0be3f55f | 546 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
bc7f75fa | 547 | adapter->rx_buffer_len, |
0be3f55f NN |
548 | DMA_FROM_DEVICE); |
549 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
bc7f75fa AK |
550 | dev_err(&pdev->dev, "RX DMA map failed\n"); |
551 | adapter->rx_dma_failed++; | |
552 | break; | |
553 | } | |
554 | ||
555 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
556 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
557 | ||
50849d79 TH |
558 | if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
559 | /* | |
560 | * Force memory writes to complete before letting h/w | |
561 | * know there are new descriptors to fetch. (Only | |
562 | * applicable for weak-ordered memory model archs, | |
563 | * such as IA-64). | |
564 | */ | |
565 | wmb(); | |
566 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
567 | } | |
bc7f75fa AK |
568 | i++; |
569 | if (i == rx_ring->count) | |
570 | i = 0; | |
571 | buffer_info = &rx_ring->buffer_info[i]; | |
572 | } | |
573 | ||
50849d79 | 574 | rx_ring->next_to_use = i; |
bc7f75fa AK |
575 | } |
576 | ||
577 | /** | |
578 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
579 | * @adapter: address of board private structure | |
580 | **/ | |
581 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, | |
582 | int cleaned_count) | |
583 | { | |
584 | struct net_device *netdev = adapter->netdev; | |
585 | struct pci_dev *pdev = adapter->pdev; | |
586 | union e1000_rx_desc_packet_split *rx_desc; | |
587 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
588 | struct e1000_buffer *buffer_info; | |
589 | struct e1000_ps_page *ps_page; | |
590 | struct sk_buff *skb; | |
591 | unsigned int i, j; | |
592 | ||
593 | i = rx_ring->next_to_use; | |
594 | buffer_info = &rx_ring->buffer_info[i]; | |
595 | ||
596 | while (cleaned_count--) { | |
597 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
598 | ||
599 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 AK |
600 | ps_page = &buffer_info->ps_pages[j]; |
601 | if (j >= adapter->rx_ps_pages) { | |
602 | /* all unused desc entries get hw null ptr */ | |
a39fe742 | 603 | rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0); |
47f44e40 AK |
604 | continue; |
605 | } | |
606 | if (!ps_page->page) { | |
607 | ps_page->page = alloc_page(GFP_ATOMIC); | |
bc7f75fa | 608 | if (!ps_page->page) { |
47f44e40 AK |
609 | adapter->alloc_rx_buff_failed++; |
610 | goto no_buffers; | |
611 | } | |
0be3f55f NN |
612 | ps_page->dma = dma_map_page(&pdev->dev, |
613 | ps_page->page, | |
614 | 0, PAGE_SIZE, | |
615 | DMA_FROM_DEVICE); | |
616 | if (dma_mapping_error(&pdev->dev, | |
617 | ps_page->dma)) { | |
47f44e40 AK |
618 | dev_err(&adapter->pdev->dev, |
619 | "RX DMA page map failed\n"); | |
620 | adapter->rx_dma_failed++; | |
621 | goto no_buffers; | |
bc7f75fa | 622 | } |
bc7f75fa | 623 | } |
47f44e40 AK |
624 | /* |
625 | * Refresh the desc even if buffer_addrs | |
626 | * didn't change because each write-back | |
627 | * erases this info. | |
628 | */ | |
629 | rx_desc->read.buffer_addr[j+1] = | |
630 | cpu_to_le64(ps_page->dma); | |
bc7f75fa AK |
631 | } |
632 | ||
89d71a66 ED |
633 | skb = netdev_alloc_skb_ip_align(netdev, |
634 | adapter->rx_ps_bsize0); | |
bc7f75fa AK |
635 | |
636 | if (!skb) { | |
637 | adapter->alloc_rx_buff_failed++; | |
638 | break; | |
639 | } | |
640 | ||
bc7f75fa | 641 | buffer_info->skb = skb; |
0be3f55f | 642 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
bc7f75fa | 643 | adapter->rx_ps_bsize0, |
0be3f55f NN |
644 | DMA_FROM_DEVICE); |
645 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
bc7f75fa AK |
646 | dev_err(&pdev->dev, "RX DMA map failed\n"); |
647 | adapter->rx_dma_failed++; | |
648 | /* cleanup skb */ | |
649 | dev_kfree_skb_any(skb); | |
650 | buffer_info->skb = NULL; | |
651 | break; | |
652 | } | |
653 | ||
654 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
655 | ||
50849d79 TH |
656 | if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
657 | /* | |
658 | * Force memory writes to complete before letting h/w | |
659 | * know there are new descriptors to fetch. (Only | |
660 | * applicable for weak-ordered memory model archs, | |
661 | * such as IA-64). | |
662 | */ | |
663 | wmb(); | |
664 | writel(i<<1, adapter->hw.hw_addr + rx_ring->tail); | |
665 | } | |
666 | ||
bc7f75fa AK |
667 | i++; |
668 | if (i == rx_ring->count) | |
669 | i = 0; | |
670 | buffer_info = &rx_ring->buffer_info[i]; | |
671 | } | |
672 | ||
673 | no_buffers: | |
50849d79 | 674 | rx_ring->next_to_use = i; |
bc7f75fa AK |
675 | } |
676 | ||
97ac8cae BA |
677 | /** |
678 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
679 | * @adapter: address of board private structure | |
97ac8cae BA |
680 | * @cleaned_count: number of buffers to allocate this pass |
681 | **/ | |
682 | ||
683 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, | |
684 | int cleaned_count) | |
685 | { | |
686 | struct net_device *netdev = adapter->netdev; | |
687 | struct pci_dev *pdev = adapter->pdev; | |
688 | struct e1000_rx_desc *rx_desc; | |
689 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
690 | struct e1000_buffer *buffer_info; | |
691 | struct sk_buff *skb; | |
692 | unsigned int i; | |
89d71a66 | 693 | unsigned int bufsz = 256 - 16 /* for skb_reserve */; |
97ac8cae BA |
694 | |
695 | i = rx_ring->next_to_use; | |
696 | buffer_info = &rx_ring->buffer_info[i]; | |
697 | ||
698 | while (cleaned_count--) { | |
699 | skb = buffer_info->skb; | |
700 | if (skb) { | |
701 | skb_trim(skb, 0); | |
702 | goto check_page; | |
703 | } | |
704 | ||
89d71a66 | 705 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
97ac8cae BA |
706 | if (unlikely(!skb)) { |
707 | /* Better luck next round */ | |
708 | adapter->alloc_rx_buff_failed++; | |
709 | break; | |
710 | } | |
711 | ||
97ac8cae BA |
712 | buffer_info->skb = skb; |
713 | check_page: | |
714 | /* allocate a new page if necessary */ | |
715 | if (!buffer_info->page) { | |
716 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
717 | if (unlikely(!buffer_info->page)) { | |
718 | adapter->alloc_rx_buff_failed++; | |
719 | break; | |
720 | } | |
721 | } | |
722 | ||
723 | if (!buffer_info->dma) | |
0be3f55f | 724 | buffer_info->dma = dma_map_page(&pdev->dev, |
97ac8cae BA |
725 | buffer_info->page, 0, |
726 | PAGE_SIZE, | |
0be3f55f | 727 | DMA_FROM_DEVICE); |
97ac8cae BA |
728 | |
729 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
730 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
731 | ||
732 | if (unlikely(++i == rx_ring->count)) | |
733 | i = 0; | |
734 | buffer_info = &rx_ring->buffer_info[i]; | |
735 | } | |
736 | ||
737 | if (likely(rx_ring->next_to_use != i)) { | |
738 | rx_ring->next_to_use = i; | |
739 | if (unlikely(i-- == 0)) | |
740 | i = (rx_ring->count - 1); | |
741 | ||
742 | /* Force memory writes to complete before letting h/w | |
743 | * know there are new descriptors to fetch. (Only | |
744 | * applicable for weak-ordered memory model archs, | |
745 | * such as IA-64). */ | |
746 | wmb(); | |
747 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
748 | } | |
749 | } | |
750 | ||
bc7f75fa AK |
751 | /** |
752 | * e1000_clean_rx_irq - Send received data up the network stack; legacy | |
753 | * @adapter: board private structure | |
754 | * | |
755 | * the return value indicates whether actual cleaning was done, there | |
756 | * is no guarantee that everything was cleaned | |
757 | **/ | |
758 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, | |
759 | int *work_done, int work_to_do) | |
760 | { | |
761 | struct net_device *netdev = adapter->netdev; | |
762 | struct pci_dev *pdev = adapter->pdev; | |
3bb99fe2 | 763 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
764 | struct e1000_ring *rx_ring = adapter->rx_ring; |
765 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
766 | struct e1000_buffer *buffer_info, *next_buffer; | |
767 | u32 length; | |
768 | unsigned int i; | |
769 | int cleaned_count = 0; | |
770 | bool cleaned = 0; | |
771 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
772 | ||
773 | i = rx_ring->next_to_clean; | |
774 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
775 | buffer_info = &rx_ring->buffer_info[i]; | |
776 | ||
777 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
778 | struct sk_buff *skb; | |
779 | u8 status; | |
780 | ||
781 | if (*work_done >= work_to_do) | |
782 | break; | |
783 | (*work_done)++; | |
784 | ||
785 | status = rx_desc->status; | |
786 | skb = buffer_info->skb; | |
787 | buffer_info->skb = NULL; | |
788 | ||
789 | prefetch(skb->data - NET_IP_ALIGN); | |
790 | ||
791 | i++; | |
792 | if (i == rx_ring->count) | |
793 | i = 0; | |
794 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
795 | prefetch(next_rxd); | |
796 | ||
797 | next_buffer = &rx_ring->buffer_info[i]; | |
798 | ||
799 | cleaned = 1; | |
800 | cleaned_count++; | |
0be3f55f | 801 | dma_unmap_single(&pdev->dev, |
bc7f75fa AK |
802 | buffer_info->dma, |
803 | adapter->rx_buffer_len, | |
0be3f55f | 804 | DMA_FROM_DEVICE); |
bc7f75fa AK |
805 | buffer_info->dma = 0; |
806 | ||
807 | length = le16_to_cpu(rx_desc->length); | |
808 | ||
b94b5028 JB |
809 | /* |
810 | * !EOP means multiple descriptors were used to store a single | |
811 | * packet, if that's the case we need to toss it. In fact, we | |
812 | * need to toss every packet with the EOP bit clear and the | |
813 | * next frame that _does_ have the EOP bit set, as it is by | |
814 | * definition only a frame fragment | |
815 | */ | |
816 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) | |
817 | adapter->flags2 |= FLAG2_IS_DISCARDING; | |
818 | ||
819 | if (adapter->flags2 & FLAG2_IS_DISCARDING) { | |
bc7f75fa | 820 | /* All receives must fit into a single buffer */ |
3bb99fe2 | 821 | e_dbg("Receive packet consumed multiple buffers\n"); |
bc7f75fa AK |
822 | /* recycle */ |
823 | buffer_info->skb = skb; | |
b94b5028 JB |
824 | if (status & E1000_RXD_STAT_EOP) |
825 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; | |
bc7f75fa AK |
826 | goto next_desc; |
827 | } | |
828 | ||
829 | if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) { | |
830 | /* recycle */ | |
831 | buffer_info->skb = skb; | |
832 | goto next_desc; | |
833 | } | |
834 | ||
eb7c3adb JK |
835 | /* adjust length to remove Ethernet CRC */ |
836 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
837 | length -= 4; | |
838 | ||
bc7f75fa AK |
839 | total_rx_bytes += length; |
840 | total_rx_packets++; | |
841 | ||
ad68076e BA |
842 | /* |
843 | * code added for copybreak, this should improve | |
bc7f75fa | 844 | * performance for small packets with large amounts |
ad68076e BA |
845 | * of reassembly being done in the stack |
846 | */ | |
bc7f75fa AK |
847 | if (length < copybreak) { |
848 | struct sk_buff *new_skb = | |
89d71a66 | 849 | netdev_alloc_skb_ip_align(netdev, length); |
bc7f75fa | 850 | if (new_skb) { |
808ff676 BA |
851 | skb_copy_to_linear_data_offset(new_skb, |
852 | -NET_IP_ALIGN, | |
853 | (skb->data - | |
854 | NET_IP_ALIGN), | |
855 | (length + | |
856 | NET_IP_ALIGN)); | |
bc7f75fa AK |
857 | /* save the skb in buffer_info as good */ |
858 | buffer_info->skb = skb; | |
859 | skb = new_skb; | |
860 | } | |
861 | /* else just continue with the old one */ | |
862 | } | |
863 | /* end copybreak code */ | |
864 | skb_put(skb, length); | |
865 | ||
866 | /* Receive Checksum Offload */ | |
867 | e1000_rx_checksum(adapter, | |
868 | (u32)(status) | | |
869 | ((u32)(rx_desc->errors) << 24), | |
870 | le16_to_cpu(rx_desc->csum), skb); | |
871 | ||
872 | e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special); | |
873 | ||
874 | next_desc: | |
875 | rx_desc->status = 0; | |
876 | ||
877 | /* return some buffers to hardware, one at a time is too slow */ | |
878 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
879 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
880 | cleaned_count = 0; | |
881 | } | |
882 | ||
883 | /* use prefetched values */ | |
884 | rx_desc = next_rxd; | |
885 | buffer_info = next_buffer; | |
886 | } | |
887 | rx_ring->next_to_clean = i; | |
888 | ||
889 | cleaned_count = e1000_desc_unused(rx_ring); | |
890 | if (cleaned_count) | |
891 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
892 | ||
bc7f75fa | 893 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 894 | adapter->total_rx_packets += total_rx_packets; |
7274c20f AK |
895 | netdev->stats.rx_bytes += total_rx_bytes; |
896 | netdev->stats.rx_packets += total_rx_packets; | |
bc7f75fa AK |
897 | return cleaned; |
898 | } | |
899 | ||
bc7f75fa AK |
900 | static void e1000_put_txbuf(struct e1000_adapter *adapter, |
901 | struct e1000_buffer *buffer_info) | |
902 | { | |
03b1320d AD |
903 | if (buffer_info->dma) { |
904 | if (buffer_info->mapped_as_page) | |
0be3f55f NN |
905 | dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
906 | buffer_info->length, DMA_TO_DEVICE); | |
03b1320d | 907 | else |
0be3f55f NN |
908 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
909 | buffer_info->length, DMA_TO_DEVICE); | |
03b1320d AD |
910 | buffer_info->dma = 0; |
911 | } | |
bc7f75fa AK |
912 | if (buffer_info->skb) { |
913 | dev_kfree_skb_any(buffer_info->skb); | |
914 | buffer_info->skb = NULL; | |
915 | } | |
1b7719c4 | 916 | buffer_info->time_stamp = 0; |
bc7f75fa AK |
917 | } |
918 | ||
41cec6f1 | 919 | static void e1000_print_hw_hang(struct work_struct *work) |
bc7f75fa | 920 | { |
41cec6f1 BA |
921 | struct e1000_adapter *adapter = container_of(work, |
922 | struct e1000_adapter, | |
923 | print_hang_task); | |
bc7f75fa AK |
924 | struct e1000_ring *tx_ring = adapter->tx_ring; |
925 | unsigned int i = tx_ring->next_to_clean; | |
926 | unsigned int eop = tx_ring->buffer_info[i].next_to_watch; | |
927 | struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
41cec6f1 BA |
928 | struct e1000_hw *hw = &adapter->hw; |
929 | u16 phy_status, phy_1000t_status, phy_ext_status; | |
930 | u16 pci_status; | |
931 | ||
932 | e1e_rphy(hw, PHY_STATUS, &phy_status); | |
933 | e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status); | |
934 | e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status); | |
bc7f75fa | 935 | |
41cec6f1 BA |
936 | pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
937 | ||
938 | /* detected Hardware unit hang */ | |
939 | e_err("Detected Hardware Unit Hang:\n" | |
44defeb3 JK |
940 | " TDH <%x>\n" |
941 | " TDT <%x>\n" | |
942 | " next_to_use <%x>\n" | |
943 | " next_to_clean <%x>\n" | |
944 | "buffer_info[next_to_clean]:\n" | |
945 | " time_stamp <%lx>\n" | |
946 | " next_to_watch <%x>\n" | |
947 | " jiffies <%lx>\n" | |
41cec6f1 BA |
948 | " next_to_watch.status <%x>\n" |
949 | "MAC Status <%x>\n" | |
950 | "PHY Status <%x>\n" | |
951 | "PHY 1000BASE-T Status <%x>\n" | |
952 | "PHY Extended Status <%x>\n" | |
953 | "PCI Status <%x>\n", | |
44defeb3 JK |
954 | readl(adapter->hw.hw_addr + tx_ring->head), |
955 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
956 | tx_ring->next_to_use, | |
957 | tx_ring->next_to_clean, | |
958 | tx_ring->buffer_info[eop].time_stamp, | |
959 | eop, | |
960 | jiffies, | |
41cec6f1 BA |
961 | eop_desc->upper.fields.status, |
962 | er32(STATUS), | |
963 | phy_status, | |
964 | phy_1000t_status, | |
965 | phy_ext_status, | |
966 | pci_status); | |
bc7f75fa AK |
967 | } |
968 | ||
969 | /** | |
970 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
971 | * @adapter: board private structure | |
972 | * | |
973 | * the return value indicates whether actual cleaning was done, there | |
974 | * is no guarantee that everything was cleaned | |
975 | **/ | |
976 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter) | |
977 | { | |
978 | struct net_device *netdev = adapter->netdev; | |
979 | struct e1000_hw *hw = &adapter->hw; | |
980 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
981 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
982 | struct e1000_buffer *buffer_info; | |
983 | unsigned int i, eop; | |
984 | unsigned int count = 0; | |
bc7f75fa AK |
985 | unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
986 | ||
987 | i = tx_ring->next_to_clean; | |
988 | eop = tx_ring->buffer_info[i].next_to_watch; | |
989 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
990 | ||
12d04a3c AD |
991 | while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
992 | (count < tx_ring->count)) { | |
a86043c2 JB |
993 | bool cleaned = false; |
994 | for (; !cleaned; count++) { | |
bc7f75fa AK |
995 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
996 | buffer_info = &tx_ring->buffer_info[i]; | |
997 | cleaned = (i == eop); | |
998 | ||
999 | if (cleaned) { | |
9ed318d5 TH |
1000 | total_tx_packets += buffer_info->segs; |
1001 | total_tx_bytes += buffer_info->bytecount; | |
bc7f75fa AK |
1002 | } |
1003 | ||
1004 | e1000_put_txbuf(adapter, buffer_info); | |
1005 | tx_desc->upper.data = 0; | |
1006 | ||
1007 | i++; | |
1008 | if (i == tx_ring->count) | |
1009 | i = 0; | |
1010 | } | |
1011 | ||
dac87619 TL |
1012 | if (i == tx_ring->next_to_use) |
1013 | break; | |
bc7f75fa AK |
1014 | eop = tx_ring->buffer_info[i].next_to_watch; |
1015 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
bc7f75fa AK |
1016 | } |
1017 | ||
1018 | tx_ring->next_to_clean = i; | |
1019 | ||
1020 | #define TX_WAKE_THRESHOLD 32 | |
a86043c2 JB |
1021 | if (count && netif_carrier_ok(netdev) && |
1022 | e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { | |
bc7f75fa AK |
1023 | /* Make sure that anybody stopping the queue after this |
1024 | * sees the new next_to_clean. | |
1025 | */ | |
1026 | smp_mb(); | |
1027 | ||
1028 | if (netif_queue_stopped(netdev) && | |
1029 | !(test_bit(__E1000_DOWN, &adapter->state))) { | |
1030 | netif_wake_queue(netdev); | |
1031 | ++adapter->restart_queue; | |
1032 | } | |
1033 | } | |
1034 | ||
1035 | if (adapter->detect_tx_hung) { | |
41cec6f1 BA |
1036 | /* |
1037 | * Detect a transmit hang in hardware, this serializes the | |
1038 | * check with the clearing of time_stamp and movement of i | |
1039 | */ | |
bc7f75fa | 1040 | adapter->detect_tx_hung = 0; |
12d04a3c AD |
1041 | if (tx_ring->buffer_info[i].time_stamp && |
1042 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp | |
8e95a202 JP |
1043 | + (adapter->tx_timeout_factor * HZ)) && |
1044 | !(er32(STATUS) & E1000_STATUS_TXOFF)) { | |
41cec6f1 | 1045 | schedule_work(&adapter->print_hang_task); |
bc7f75fa AK |
1046 | netif_stop_queue(netdev); |
1047 | } | |
1048 | } | |
1049 | adapter->total_tx_bytes += total_tx_bytes; | |
1050 | adapter->total_tx_packets += total_tx_packets; | |
7274c20f AK |
1051 | netdev->stats.tx_bytes += total_tx_bytes; |
1052 | netdev->stats.tx_packets += total_tx_packets; | |
12d04a3c | 1053 | return (count < tx_ring->count); |
bc7f75fa AK |
1054 | } |
1055 | ||
bc7f75fa AK |
1056 | /** |
1057 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
1058 | * @adapter: board private structure | |
1059 | * | |
1060 | * the return value indicates whether actual cleaning was done, there | |
1061 | * is no guarantee that everything was cleaned | |
1062 | **/ | |
1063 | static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
1064 | int *work_done, int work_to_do) | |
1065 | { | |
3bb99fe2 | 1066 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
1067 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
1068 | struct net_device *netdev = adapter->netdev; | |
1069 | struct pci_dev *pdev = adapter->pdev; | |
1070 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1071 | struct e1000_buffer *buffer_info, *next_buffer; | |
1072 | struct e1000_ps_page *ps_page; | |
1073 | struct sk_buff *skb; | |
1074 | unsigned int i, j; | |
1075 | u32 length, staterr; | |
1076 | int cleaned_count = 0; | |
1077 | bool cleaned = 0; | |
1078 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
1079 | ||
1080 | i = rx_ring->next_to_clean; | |
1081 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
1082 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
1083 | buffer_info = &rx_ring->buffer_info[i]; | |
1084 | ||
1085 | while (staterr & E1000_RXD_STAT_DD) { | |
1086 | if (*work_done >= work_to_do) | |
1087 | break; | |
1088 | (*work_done)++; | |
1089 | skb = buffer_info->skb; | |
1090 | ||
1091 | /* in the packet split case this is header only */ | |
1092 | prefetch(skb->data - NET_IP_ALIGN); | |
1093 | ||
1094 | i++; | |
1095 | if (i == rx_ring->count) | |
1096 | i = 0; | |
1097 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
1098 | prefetch(next_rxd); | |
1099 | ||
1100 | next_buffer = &rx_ring->buffer_info[i]; | |
1101 | ||
1102 | cleaned = 1; | |
1103 | cleaned_count++; | |
0be3f55f | 1104 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
bc7f75fa | 1105 | adapter->rx_ps_bsize0, |
0be3f55f | 1106 | DMA_FROM_DEVICE); |
bc7f75fa AK |
1107 | buffer_info->dma = 0; |
1108 | ||
b94b5028 JB |
1109 | /* see !EOP comment in other rx routine */ |
1110 | if (!(staterr & E1000_RXD_STAT_EOP)) | |
1111 | adapter->flags2 |= FLAG2_IS_DISCARDING; | |
1112 | ||
1113 | if (adapter->flags2 & FLAG2_IS_DISCARDING) { | |
3bb99fe2 BA |
1114 | e_dbg("Packet Split buffers didn't pick up the full " |
1115 | "packet\n"); | |
bc7f75fa | 1116 | dev_kfree_skb_irq(skb); |
b94b5028 JB |
1117 | if (staterr & E1000_RXD_STAT_EOP) |
1118 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; | |
bc7f75fa AK |
1119 | goto next_desc; |
1120 | } | |
1121 | ||
1122 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
1123 | dev_kfree_skb_irq(skb); | |
1124 | goto next_desc; | |
1125 | } | |
1126 | ||
1127 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
1128 | ||
1129 | if (!length) { | |
3bb99fe2 BA |
1130 | e_dbg("Last part of the packet spanning multiple " |
1131 | "descriptors\n"); | |
bc7f75fa AK |
1132 | dev_kfree_skb_irq(skb); |
1133 | goto next_desc; | |
1134 | } | |
1135 | ||
1136 | /* Good Receive */ | |
1137 | skb_put(skb, length); | |
1138 | ||
1139 | { | |
ad68076e BA |
1140 | /* |
1141 | * this looks ugly, but it seems compiler issues make it | |
1142 | * more efficient than reusing j | |
1143 | */ | |
bc7f75fa AK |
1144 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
1145 | ||
ad68076e BA |
1146 | /* |
1147 | * page alloc/put takes too long and effects small packet | |
1148 | * throughput, so unsplit small packets and save the alloc/put | |
1149 | * only valid in softirq (napi) context to call kmap_* | |
1150 | */ | |
bc7f75fa AK |
1151 | if (l1 && (l1 <= copybreak) && |
1152 | ((length + l1) <= adapter->rx_ps_bsize0)) { | |
1153 | u8 *vaddr; | |
1154 | ||
47f44e40 | 1155 | ps_page = &buffer_info->ps_pages[0]; |
bc7f75fa | 1156 | |
ad68076e BA |
1157 | /* |
1158 | * there is no documentation about how to call | |
bc7f75fa | 1159 | * kmap_atomic, so we can't hold the mapping |
ad68076e BA |
1160 | * very long |
1161 | */ | |
0be3f55f NN |
1162 | dma_sync_single_for_cpu(&pdev->dev, ps_page->dma, |
1163 | PAGE_SIZE, DMA_FROM_DEVICE); | |
bc7f75fa AK |
1164 | vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ); |
1165 | memcpy(skb_tail_pointer(skb), vaddr, l1); | |
1166 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); | |
0be3f55f NN |
1167 | dma_sync_single_for_device(&pdev->dev, ps_page->dma, |
1168 | PAGE_SIZE, DMA_FROM_DEVICE); | |
140a7480 | 1169 | |
eb7c3adb JK |
1170 | /* remove the CRC */ |
1171 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
1172 | l1 -= 4; | |
1173 | ||
bc7f75fa AK |
1174 | skb_put(skb, l1); |
1175 | goto copydone; | |
1176 | } /* if */ | |
1177 | } | |
1178 | ||
1179 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
1180 | length = le16_to_cpu(rx_desc->wb.upper.length[j]); | |
1181 | if (!length) | |
1182 | break; | |
1183 | ||
47f44e40 | 1184 | ps_page = &buffer_info->ps_pages[j]; |
0be3f55f NN |
1185 | dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
1186 | DMA_FROM_DEVICE); | |
bc7f75fa AK |
1187 | ps_page->dma = 0; |
1188 | skb_fill_page_desc(skb, j, ps_page->page, 0, length); | |
1189 | ps_page->page = NULL; | |
1190 | skb->len += length; | |
1191 | skb->data_len += length; | |
1192 | skb->truesize += length; | |
1193 | } | |
1194 | ||
eb7c3adb JK |
1195 | /* strip the ethernet crc, problem is we're using pages now so |
1196 | * this whole operation can get a little cpu intensive | |
1197 | */ | |
1198 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
1199 | pskb_trim(skb, skb->len - 4); | |
1200 | ||
bc7f75fa AK |
1201 | copydone: |
1202 | total_rx_bytes += skb->len; | |
1203 | total_rx_packets++; | |
1204 | ||
1205 | e1000_rx_checksum(adapter, staterr, le16_to_cpu( | |
1206 | rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); | |
1207 | ||
1208 | if (rx_desc->wb.upper.header_status & | |
1209 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) | |
1210 | adapter->rx_hdr_split++; | |
1211 | ||
1212 | e1000_receive_skb(adapter, netdev, skb, | |
1213 | staterr, rx_desc->wb.middle.vlan); | |
1214 | ||
1215 | next_desc: | |
1216 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); | |
1217 | buffer_info->skb = NULL; | |
1218 | ||
1219 | /* return some buffers to hardware, one at a time is too slow */ | |
1220 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
1221 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1222 | cleaned_count = 0; | |
1223 | } | |
1224 | ||
1225 | /* use prefetched values */ | |
1226 | rx_desc = next_rxd; | |
1227 | buffer_info = next_buffer; | |
1228 | ||
1229 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
1230 | } | |
1231 | rx_ring->next_to_clean = i; | |
1232 | ||
1233 | cleaned_count = e1000_desc_unused(rx_ring); | |
1234 | if (cleaned_count) | |
1235 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1236 | ||
bc7f75fa | 1237 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 1238 | adapter->total_rx_packets += total_rx_packets; |
7274c20f AK |
1239 | netdev->stats.rx_bytes += total_rx_bytes; |
1240 | netdev->stats.rx_packets += total_rx_packets; | |
bc7f75fa AK |
1241 | return cleaned; |
1242 | } | |
1243 | ||
97ac8cae BA |
1244 | /** |
1245 | * e1000_consume_page - helper function | |
1246 | **/ | |
1247 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
1248 | u16 length) | |
1249 | { | |
1250 | bi->page = NULL; | |
1251 | skb->len += length; | |
1252 | skb->data_len += length; | |
1253 | skb->truesize += length; | |
1254 | } | |
1255 | ||
1256 | /** | |
1257 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
1258 | * @adapter: board private structure | |
1259 | * | |
1260 | * the return value indicates whether actual cleaning was done, there | |
1261 | * is no guarantee that everything was cleaned | |
1262 | **/ | |
1263 | ||
1264 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, | |
1265 | int *work_done, int work_to_do) | |
1266 | { | |
1267 | struct net_device *netdev = adapter->netdev; | |
1268 | struct pci_dev *pdev = adapter->pdev; | |
1269 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1270 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
1271 | struct e1000_buffer *buffer_info, *next_buffer; | |
1272 | u32 length; | |
1273 | unsigned int i; | |
1274 | int cleaned_count = 0; | |
1275 | bool cleaned = false; | |
1276 | unsigned int total_rx_bytes=0, total_rx_packets=0; | |
1277 | ||
1278 | i = rx_ring->next_to_clean; | |
1279 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
1280 | buffer_info = &rx_ring->buffer_info[i]; | |
1281 | ||
1282 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
1283 | struct sk_buff *skb; | |
1284 | u8 status; | |
1285 | ||
1286 | if (*work_done >= work_to_do) | |
1287 | break; | |
1288 | (*work_done)++; | |
1289 | ||
1290 | status = rx_desc->status; | |
1291 | skb = buffer_info->skb; | |
1292 | buffer_info->skb = NULL; | |
1293 | ||
1294 | ++i; | |
1295 | if (i == rx_ring->count) | |
1296 | i = 0; | |
1297 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
1298 | prefetch(next_rxd); | |
1299 | ||
1300 | next_buffer = &rx_ring->buffer_info[i]; | |
1301 | ||
1302 | cleaned = true; | |
1303 | cleaned_count++; | |
0be3f55f NN |
1304 | dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
1305 | DMA_FROM_DEVICE); | |
97ac8cae BA |
1306 | buffer_info->dma = 0; |
1307 | ||
1308 | length = le16_to_cpu(rx_desc->length); | |
1309 | ||
1310 | /* errors is only valid for DD + EOP descriptors */ | |
1311 | if (unlikely((status & E1000_RXD_STAT_EOP) && | |
1312 | (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { | |
1313 | /* recycle both page and skb */ | |
1314 | buffer_info->skb = skb; | |
1315 | /* an error means any chain goes out the window | |
1316 | * too */ | |
1317 | if (rx_ring->rx_skb_top) | |
1318 | dev_kfree_skb(rx_ring->rx_skb_top); | |
1319 | rx_ring->rx_skb_top = NULL; | |
1320 | goto next_desc; | |
1321 | } | |
1322 | ||
1323 | #define rxtop rx_ring->rx_skb_top | |
1324 | if (!(status & E1000_RXD_STAT_EOP)) { | |
1325 | /* this descriptor is only the beginning (or middle) */ | |
1326 | if (!rxtop) { | |
1327 | /* this is the beginning of a chain */ | |
1328 | rxtop = skb; | |
1329 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
1330 | 0, length); | |
1331 | } else { | |
1332 | /* this is the middle of a chain */ | |
1333 | skb_fill_page_desc(rxtop, | |
1334 | skb_shinfo(rxtop)->nr_frags, | |
1335 | buffer_info->page, 0, length); | |
1336 | /* re-use the skb, only consumed the page */ | |
1337 | buffer_info->skb = skb; | |
1338 | } | |
1339 | e1000_consume_page(buffer_info, rxtop, length); | |
1340 | goto next_desc; | |
1341 | } else { | |
1342 | if (rxtop) { | |
1343 | /* end of the chain */ | |
1344 | skb_fill_page_desc(rxtop, | |
1345 | skb_shinfo(rxtop)->nr_frags, | |
1346 | buffer_info->page, 0, length); | |
1347 | /* re-use the current skb, we only consumed the | |
1348 | * page */ | |
1349 | buffer_info->skb = skb; | |
1350 | skb = rxtop; | |
1351 | rxtop = NULL; | |
1352 | e1000_consume_page(buffer_info, skb, length); | |
1353 | } else { | |
1354 | /* no chain, got EOP, this buf is the packet | |
1355 | * copybreak to save the put_page/alloc_page */ | |
1356 | if (length <= copybreak && | |
1357 | skb_tailroom(skb) >= length) { | |
1358 | u8 *vaddr; | |
1359 | vaddr = kmap_atomic(buffer_info->page, | |
1360 | KM_SKB_DATA_SOFTIRQ); | |
1361 | memcpy(skb_tail_pointer(skb), vaddr, | |
1362 | length); | |
1363 | kunmap_atomic(vaddr, | |
1364 | KM_SKB_DATA_SOFTIRQ); | |
1365 | /* re-use the page, so don't erase | |
1366 | * buffer_info->page */ | |
1367 | skb_put(skb, length); | |
1368 | } else { | |
1369 | skb_fill_page_desc(skb, 0, | |
1370 | buffer_info->page, 0, | |
1371 | length); | |
1372 | e1000_consume_page(buffer_info, skb, | |
1373 | length); | |
1374 | } | |
1375 | } | |
1376 | } | |
1377 | ||
1378 | /* Receive Checksum Offload XXX recompute due to CRC strip? */ | |
1379 | e1000_rx_checksum(adapter, | |
1380 | (u32)(status) | | |
1381 | ((u32)(rx_desc->errors) << 24), | |
1382 | le16_to_cpu(rx_desc->csum), skb); | |
1383 | ||
1384 | /* probably a little skewed due to removing CRC */ | |
1385 | total_rx_bytes += skb->len; | |
1386 | total_rx_packets++; | |
1387 | ||
1388 | /* eth type trans needs skb->data to point to something */ | |
1389 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
44defeb3 | 1390 | e_err("pskb_may_pull failed.\n"); |
97ac8cae BA |
1391 | dev_kfree_skb(skb); |
1392 | goto next_desc; | |
1393 | } | |
1394 | ||
1395 | e1000_receive_skb(adapter, netdev, skb, status, | |
1396 | rx_desc->special); | |
1397 | ||
1398 | next_desc: | |
1399 | rx_desc->status = 0; | |
1400 | ||
1401 | /* return some buffers to hardware, one at a time is too slow */ | |
1402 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
1403 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1404 | cleaned_count = 0; | |
1405 | } | |
1406 | ||
1407 | /* use prefetched values */ | |
1408 | rx_desc = next_rxd; | |
1409 | buffer_info = next_buffer; | |
1410 | } | |
1411 | rx_ring->next_to_clean = i; | |
1412 | ||
1413 | cleaned_count = e1000_desc_unused(rx_ring); | |
1414 | if (cleaned_count) | |
1415 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1416 | ||
1417 | adapter->total_rx_bytes += total_rx_bytes; | |
1418 | adapter->total_rx_packets += total_rx_packets; | |
7274c20f AK |
1419 | netdev->stats.rx_bytes += total_rx_bytes; |
1420 | netdev->stats.rx_packets += total_rx_packets; | |
97ac8cae BA |
1421 | return cleaned; |
1422 | } | |
1423 | ||
bc7f75fa AK |
1424 | /** |
1425 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
1426 | * @adapter: board private structure | |
1427 | **/ | |
1428 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter) | |
1429 | { | |
1430 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1431 | struct e1000_buffer *buffer_info; | |
1432 | struct e1000_ps_page *ps_page; | |
1433 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
1434 | unsigned int i, j; |
1435 | ||
1436 | /* Free all the Rx ring sk_buffs */ | |
1437 | for (i = 0; i < rx_ring->count; i++) { | |
1438 | buffer_info = &rx_ring->buffer_info[i]; | |
1439 | if (buffer_info->dma) { | |
1440 | if (adapter->clean_rx == e1000_clean_rx_irq) | |
0be3f55f | 1441 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
bc7f75fa | 1442 | adapter->rx_buffer_len, |
0be3f55f | 1443 | DMA_FROM_DEVICE); |
97ac8cae | 1444 | else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
0be3f55f | 1445 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
97ac8cae | 1446 | PAGE_SIZE, |
0be3f55f | 1447 | DMA_FROM_DEVICE); |
bc7f75fa | 1448 | else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
0be3f55f | 1449 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
bc7f75fa | 1450 | adapter->rx_ps_bsize0, |
0be3f55f | 1451 | DMA_FROM_DEVICE); |
bc7f75fa AK |
1452 | buffer_info->dma = 0; |
1453 | } | |
1454 | ||
97ac8cae BA |
1455 | if (buffer_info->page) { |
1456 | put_page(buffer_info->page); | |
1457 | buffer_info->page = NULL; | |
1458 | } | |
1459 | ||
bc7f75fa AK |
1460 | if (buffer_info->skb) { |
1461 | dev_kfree_skb(buffer_info->skb); | |
1462 | buffer_info->skb = NULL; | |
1463 | } | |
1464 | ||
1465 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 | 1466 | ps_page = &buffer_info->ps_pages[j]; |
bc7f75fa AK |
1467 | if (!ps_page->page) |
1468 | break; | |
0be3f55f NN |
1469 | dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
1470 | DMA_FROM_DEVICE); | |
bc7f75fa AK |
1471 | ps_page->dma = 0; |
1472 | put_page(ps_page->page); | |
1473 | ps_page->page = NULL; | |
1474 | } | |
1475 | } | |
1476 | ||
1477 | /* there also may be some cached data from a chained receive */ | |
1478 | if (rx_ring->rx_skb_top) { | |
1479 | dev_kfree_skb(rx_ring->rx_skb_top); | |
1480 | rx_ring->rx_skb_top = NULL; | |
1481 | } | |
1482 | ||
bc7f75fa AK |
1483 | /* Zero out the descriptor ring */ |
1484 | memset(rx_ring->desc, 0, rx_ring->size); | |
1485 | ||
1486 | rx_ring->next_to_clean = 0; | |
1487 | rx_ring->next_to_use = 0; | |
b94b5028 | 1488 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
bc7f75fa AK |
1489 | |
1490 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
1491 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
1492 | } | |
1493 | ||
a8f88ff5 JB |
1494 | static void e1000e_downshift_workaround(struct work_struct *work) |
1495 | { | |
1496 | struct e1000_adapter *adapter = container_of(work, | |
1497 | struct e1000_adapter, downshift_task); | |
1498 | ||
1499 | e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); | |
1500 | } | |
1501 | ||
bc7f75fa AK |
1502 | /** |
1503 | * e1000_intr_msi - Interrupt Handler | |
1504 | * @irq: interrupt number | |
1505 | * @data: pointer to a network interface device structure | |
1506 | **/ | |
1507 | static irqreturn_t e1000_intr_msi(int irq, void *data) | |
1508 | { | |
1509 | struct net_device *netdev = data; | |
1510 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1511 | struct e1000_hw *hw = &adapter->hw; | |
1512 | u32 icr = er32(ICR); | |
1513 | ||
ad68076e BA |
1514 | /* |
1515 | * read ICR disables interrupts using IAM | |
1516 | */ | |
bc7f75fa | 1517 | |
573cca8c | 1518 | if (icr & E1000_ICR_LSC) { |
bc7f75fa | 1519 | hw->mac.get_link_status = 1; |
ad68076e BA |
1520 | /* |
1521 | * ICH8 workaround-- Call gig speed drop workaround on cable | |
1522 | * disconnect (LSC) before accessing any PHY registers | |
1523 | */ | |
bc7f75fa AK |
1524 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1525 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1526 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1527 | |
ad68076e BA |
1528 | /* |
1529 | * 80003ES2LAN workaround-- For packet buffer work-around on | |
bc7f75fa | 1530 | * link down event; disable receives here in the ISR and reset |
ad68076e BA |
1531 | * adapter in watchdog |
1532 | */ | |
bc7f75fa AK |
1533 | if (netif_carrier_ok(netdev) && |
1534 | adapter->flags & FLAG_RX_NEEDS_RESTART) { | |
1535 | /* disable receives */ | |
1536 | u32 rctl = er32(RCTL); | |
1537 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
318a94d6 | 1538 | adapter->flags |= FLAG_RX_RESTART_NOW; |
bc7f75fa AK |
1539 | } |
1540 | /* guard against interrupt when we're going down */ | |
1541 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1542 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1543 | } | |
1544 | ||
288379f0 | 1545 | if (napi_schedule_prep(&adapter->napi)) { |
bc7f75fa AK |
1546 | adapter->total_tx_bytes = 0; |
1547 | adapter->total_tx_packets = 0; | |
1548 | adapter->total_rx_bytes = 0; | |
1549 | adapter->total_rx_packets = 0; | |
288379f0 | 1550 | __napi_schedule(&adapter->napi); |
bc7f75fa AK |
1551 | } |
1552 | ||
1553 | return IRQ_HANDLED; | |
1554 | } | |
1555 | ||
1556 | /** | |
1557 | * e1000_intr - Interrupt Handler | |
1558 | * @irq: interrupt number | |
1559 | * @data: pointer to a network interface device structure | |
1560 | **/ | |
1561 | static irqreturn_t e1000_intr(int irq, void *data) | |
1562 | { | |
1563 | struct net_device *netdev = data; | |
1564 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1565 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa | 1566 | u32 rctl, icr = er32(ICR); |
4662e82b | 1567 | |
a68ea775 | 1568 | if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
bc7f75fa AK |
1569 | return IRQ_NONE; /* Not our interrupt */ |
1570 | ||
ad68076e BA |
1571 | /* |
1572 | * IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
1573 | * not set, then the adapter didn't send an interrupt | |
1574 | */ | |
bc7f75fa AK |
1575 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
1576 | return IRQ_NONE; | |
1577 | ||
ad68076e BA |
1578 | /* |
1579 | * Interrupt Auto-Mask...upon reading ICR, | |
1580 | * interrupts are masked. No need for the | |
1581 | * IMC write | |
1582 | */ | |
bc7f75fa | 1583 | |
573cca8c | 1584 | if (icr & E1000_ICR_LSC) { |
bc7f75fa | 1585 | hw->mac.get_link_status = 1; |
ad68076e BA |
1586 | /* |
1587 | * ICH8 workaround-- Call gig speed drop workaround on cable | |
1588 | * disconnect (LSC) before accessing any PHY registers | |
1589 | */ | |
bc7f75fa AK |
1590 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1591 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1592 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1593 | |
ad68076e BA |
1594 | /* |
1595 | * 80003ES2LAN workaround-- | |
bc7f75fa AK |
1596 | * For packet buffer work-around on link down event; |
1597 | * disable receives here in the ISR and | |
1598 | * reset adapter in watchdog | |
1599 | */ | |
1600 | if (netif_carrier_ok(netdev) && | |
1601 | (adapter->flags & FLAG_RX_NEEDS_RESTART)) { | |
1602 | /* disable receives */ | |
1603 | rctl = er32(RCTL); | |
1604 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
318a94d6 | 1605 | adapter->flags |= FLAG_RX_RESTART_NOW; |
bc7f75fa AK |
1606 | } |
1607 | /* guard against interrupt when we're going down */ | |
1608 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1609 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1610 | } | |
1611 | ||
288379f0 | 1612 | if (napi_schedule_prep(&adapter->napi)) { |
bc7f75fa AK |
1613 | adapter->total_tx_bytes = 0; |
1614 | adapter->total_tx_packets = 0; | |
1615 | adapter->total_rx_bytes = 0; | |
1616 | adapter->total_rx_packets = 0; | |
288379f0 | 1617 | __napi_schedule(&adapter->napi); |
bc7f75fa AK |
1618 | } |
1619 | ||
1620 | return IRQ_HANDLED; | |
1621 | } | |
1622 | ||
4662e82b BA |
1623 | static irqreturn_t e1000_msix_other(int irq, void *data) |
1624 | { | |
1625 | struct net_device *netdev = data; | |
1626 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1627 | struct e1000_hw *hw = &adapter->hw; | |
1628 | u32 icr = er32(ICR); | |
1629 | ||
1630 | if (!(icr & E1000_ICR_INT_ASSERTED)) { | |
a3c69fef JB |
1631 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
1632 | ew32(IMS, E1000_IMS_OTHER); | |
4662e82b BA |
1633 | return IRQ_NONE; |
1634 | } | |
1635 | ||
1636 | if (icr & adapter->eiac_mask) | |
1637 | ew32(ICS, (icr & adapter->eiac_mask)); | |
1638 | ||
1639 | if (icr & E1000_ICR_OTHER) { | |
1640 | if (!(icr & E1000_ICR_LSC)) | |
1641 | goto no_link_interrupt; | |
1642 | hw->mac.get_link_status = 1; | |
1643 | /* guard against interrupt when we're going down */ | |
1644 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1645 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1646 | } | |
1647 | ||
1648 | no_link_interrupt: | |
a3c69fef JB |
1649 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
1650 | ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); | |
4662e82b BA |
1651 | |
1652 | return IRQ_HANDLED; | |
1653 | } | |
1654 | ||
1655 | ||
1656 | static irqreturn_t e1000_intr_msix_tx(int irq, void *data) | |
1657 | { | |
1658 | struct net_device *netdev = data; | |
1659 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1660 | struct e1000_hw *hw = &adapter->hw; | |
1661 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1662 | ||
1663 | ||
1664 | adapter->total_tx_bytes = 0; | |
1665 | adapter->total_tx_packets = 0; | |
1666 | ||
1667 | if (!e1000_clean_tx_irq(adapter)) | |
1668 | /* Ring was not completely cleaned, so fire another interrupt */ | |
1669 | ew32(ICS, tx_ring->ims_val); | |
1670 | ||
1671 | return IRQ_HANDLED; | |
1672 | } | |
1673 | ||
1674 | static irqreturn_t e1000_intr_msix_rx(int irq, void *data) | |
1675 | { | |
1676 | struct net_device *netdev = data; | |
1677 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1678 | ||
1679 | /* Write the ITR value calculated at the end of the | |
1680 | * previous interrupt. | |
1681 | */ | |
1682 | if (adapter->rx_ring->set_itr) { | |
1683 | writel(1000000000 / (adapter->rx_ring->itr_val * 256), | |
1684 | adapter->hw.hw_addr + adapter->rx_ring->itr_register); | |
1685 | adapter->rx_ring->set_itr = 0; | |
1686 | } | |
1687 | ||
288379f0 | 1688 | if (napi_schedule_prep(&adapter->napi)) { |
4662e82b BA |
1689 | adapter->total_rx_bytes = 0; |
1690 | adapter->total_rx_packets = 0; | |
288379f0 | 1691 | __napi_schedule(&adapter->napi); |
4662e82b BA |
1692 | } |
1693 | return IRQ_HANDLED; | |
1694 | } | |
1695 | ||
1696 | /** | |
1697 | * e1000_configure_msix - Configure MSI-X hardware | |
1698 | * | |
1699 | * e1000_configure_msix sets up the hardware to properly | |
1700 | * generate MSI-X interrupts. | |
1701 | **/ | |
1702 | static void e1000_configure_msix(struct e1000_adapter *adapter) | |
1703 | { | |
1704 | struct e1000_hw *hw = &adapter->hw; | |
1705 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1706 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1707 | int vector = 0; | |
1708 | u32 ctrl_ext, ivar = 0; | |
1709 | ||
1710 | adapter->eiac_mask = 0; | |
1711 | ||
1712 | /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ | |
1713 | if (hw->mac.type == e1000_82574) { | |
1714 | u32 rfctl = er32(RFCTL); | |
1715 | rfctl |= E1000_RFCTL_ACK_DIS; | |
1716 | ew32(RFCTL, rfctl); | |
1717 | } | |
1718 | ||
1719 | #define E1000_IVAR_INT_ALLOC_VALID 0x8 | |
1720 | /* Configure Rx vector */ | |
1721 | rx_ring->ims_val = E1000_IMS_RXQ0; | |
1722 | adapter->eiac_mask |= rx_ring->ims_val; | |
1723 | if (rx_ring->itr_val) | |
1724 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1725 | hw->hw_addr + rx_ring->itr_register); | |
1726 | else | |
1727 | writel(1, hw->hw_addr + rx_ring->itr_register); | |
1728 | ivar = E1000_IVAR_INT_ALLOC_VALID | vector; | |
1729 | ||
1730 | /* Configure Tx vector */ | |
1731 | tx_ring->ims_val = E1000_IMS_TXQ0; | |
1732 | vector++; | |
1733 | if (tx_ring->itr_val) | |
1734 | writel(1000000000 / (tx_ring->itr_val * 256), | |
1735 | hw->hw_addr + tx_ring->itr_register); | |
1736 | else | |
1737 | writel(1, hw->hw_addr + tx_ring->itr_register); | |
1738 | adapter->eiac_mask |= tx_ring->ims_val; | |
1739 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); | |
1740 | ||
1741 | /* set vector for Other Causes, e.g. link changes */ | |
1742 | vector++; | |
1743 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); | |
1744 | if (rx_ring->itr_val) | |
1745 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1746 | hw->hw_addr + E1000_EITR_82574(vector)); | |
1747 | else | |
1748 | writel(1, hw->hw_addr + E1000_EITR_82574(vector)); | |
1749 | ||
1750 | /* Cause Tx interrupts on every write back */ | |
1751 | ivar |= (1 << 31); | |
1752 | ||
1753 | ew32(IVAR, ivar); | |
1754 | ||
1755 | /* enable MSI-X PBA support */ | |
1756 | ctrl_ext = er32(CTRL_EXT); | |
1757 | ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; | |
1758 | ||
1759 | /* Auto-Mask Other interrupts upon ICR read */ | |
1760 | #define E1000_EIAC_MASK_82574 0x01F00000 | |
1761 | ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); | |
1762 | ctrl_ext |= E1000_CTRL_EXT_EIAME; | |
1763 | ew32(CTRL_EXT, ctrl_ext); | |
1764 | e1e_flush(); | |
1765 | } | |
1766 | ||
1767 | void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) | |
1768 | { | |
1769 | if (adapter->msix_entries) { | |
1770 | pci_disable_msix(adapter->pdev); | |
1771 | kfree(adapter->msix_entries); | |
1772 | adapter->msix_entries = NULL; | |
1773 | } else if (adapter->flags & FLAG_MSI_ENABLED) { | |
1774 | pci_disable_msi(adapter->pdev); | |
1775 | adapter->flags &= ~FLAG_MSI_ENABLED; | |
1776 | } | |
4662e82b BA |
1777 | } |
1778 | ||
1779 | /** | |
1780 | * e1000e_set_interrupt_capability - set MSI or MSI-X if supported | |
1781 | * | |
1782 | * Attempt to configure interrupts using the best available | |
1783 | * capabilities of the hardware and kernel. | |
1784 | **/ | |
1785 | void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) | |
1786 | { | |
1787 | int err; | |
1788 | int numvecs, i; | |
1789 | ||
1790 | ||
1791 | switch (adapter->int_mode) { | |
1792 | case E1000E_INT_MODE_MSIX: | |
1793 | if (adapter->flags & FLAG_HAS_MSIX) { | |
1794 | numvecs = 3; /* RxQ0, TxQ0 and other */ | |
1795 | adapter->msix_entries = kcalloc(numvecs, | |
1796 | sizeof(struct msix_entry), | |
1797 | GFP_KERNEL); | |
1798 | if (adapter->msix_entries) { | |
1799 | for (i = 0; i < numvecs; i++) | |
1800 | adapter->msix_entries[i].entry = i; | |
1801 | ||
1802 | err = pci_enable_msix(adapter->pdev, | |
1803 | adapter->msix_entries, | |
1804 | numvecs); | |
1805 | if (err == 0) | |
1806 | return; | |
1807 | } | |
1808 | /* MSI-X failed, so fall through and try MSI */ | |
1809 | e_err("Failed to initialize MSI-X interrupts. " | |
1810 | "Falling back to MSI interrupts.\n"); | |
1811 | e1000e_reset_interrupt_capability(adapter); | |
1812 | } | |
1813 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
1814 | /* Fall through */ | |
1815 | case E1000E_INT_MODE_MSI: | |
1816 | if (!pci_enable_msi(adapter->pdev)) { | |
1817 | adapter->flags |= FLAG_MSI_ENABLED; | |
1818 | } else { | |
1819 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
1820 | e_err("Failed to initialize MSI interrupts. Falling " | |
1821 | "back to legacy interrupts.\n"); | |
1822 | } | |
1823 | /* Fall through */ | |
1824 | case E1000E_INT_MODE_LEGACY: | |
1825 | /* Don't do anything; this is the system default */ | |
1826 | break; | |
1827 | } | |
4662e82b BA |
1828 | } |
1829 | ||
1830 | /** | |
1831 | * e1000_request_msix - Initialize MSI-X interrupts | |
1832 | * | |
1833 | * e1000_request_msix allocates MSI-X vectors and requests interrupts from the | |
1834 | * kernel. | |
1835 | **/ | |
1836 | static int e1000_request_msix(struct e1000_adapter *adapter) | |
1837 | { | |
1838 | struct net_device *netdev = adapter->netdev; | |
1839 | int err = 0, vector = 0; | |
1840 | ||
1841 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
cb7b48f6 | 1842 | sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name); |
4662e82b BA |
1843 | else |
1844 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
1845 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1846 | e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
4662e82b BA |
1847 | netdev); |
1848 | if (err) | |
1849 | goto out; | |
1850 | adapter->rx_ring->itr_register = E1000_EITR_82574(vector); | |
1851 | adapter->rx_ring->itr_val = adapter->itr; | |
1852 | vector++; | |
1853 | ||
1854 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
cb7b48f6 | 1855 | sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name); |
4662e82b BA |
1856 | else |
1857 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
1858 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1859 | e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
4662e82b BA |
1860 | netdev); |
1861 | if (err) | |
1862 | goto out; | |
1863 | adapter->tx_ring->itr_register = E1000_EITR_82574(vector); | |
1864 | adapter->tx_ring->itr_val = adapter->itr; | |
1865 | vector++; | |
1866 | ||
1867 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1868 | e1000_msix_other, 0, netdev->name, netdev); |
4662e82b BA |
1869 | if (err) |
1870 | goto out; | |
1871 | ||
1872 | e1000_configure_msix(adapter); | |
1873 | return 0; | |
1874 | out: | |
1875 | return err; | |
1876 | } | |
1877 | ||
f8d59f78 BA |
1878 | /** |
1879 | * e1000_request_irq - initialize interrupts | |
1880 | * | |
1881 | * Attempts to configure interrupts using the best available | |
1882 | * capabilities of the hardware and kernel. | |
1883 | **/ | |
bc7f75fa AK |
1884 | static int e1000_request_irq(struct e1000_adapter *adapter) |
1885 | { | |
1886 | struct net_device *netdev = adapter->netdev; | |
bc7f75fa AK |
1887 | int err; |
1888 | ||
4662e82b BA |
1889 | if (adapter->msix_entries) { |
1890 | err = e1000_request_msix(adapter); | |
1891 | if (!err) | |
1892 | return err; | |
1893 | /* fall back to MSI */ | |
1894 | e1000e_reset_interrupt_capability(adapter); | |
1895 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
1896 | e1000e_set_interrupt_capability(adapter); | |
bc7f75fa | 1897 | } |
4662e82b | 1898 | if (adapter->flags & FLAG_MSI_ENABLED) { |
a0607fd3 | 1899 | err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
4662e82b BA |
1900 | netdev->name, netdev); |
1901 | if (!err) | |
1902 | return err; | |
bc7f75fa | 1903 | |
4662e82b BA |
1904 | /* fall back to legacy interrupt */ |
1905 | e1000e_reset_interrupt_capability(adapter); | |
1906 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
bc7f75fa AK |
1907 | } |
1908 | ||
a0607fd3 | 1909 | err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
4662e82b BA |
1910 | netdev->name, netdev); |
1911 | if (err) | |
1912 | e_err("Unable to allocate interrupt, Error: %d\n", err); | |
1913 | ||
bc7f75fa AK |
1914 | return err; |
1915 | } | |
1916 | ||
1917 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
1918 | { | |
1919 | struct net_device *netdev = adapter->netdev; | |
1920 | ||
4662e82b BA |
1921 | if (adapter->msix_entries) { |
1922 | int vector = 0; | |
1923 | ||
1924 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1925 | vector++; | |
1926 | ||
1927 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1928 | vector++; | |
1929 | ||
1930 | /* Other Causes interrupt vector */ | |
1931 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1932 | return; | |
bc7f75fa | 1933 | } |
4662e82b BA |
1934 | |
1935 | free_irq(adapter->pdev->irq, netdev); | |
bc7f75fa AK |
1936 | } |
1937 | ||
1938 | /** | |
1939 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
1940 | **/ | |
1941 | static void e1000_irq_disable(struct e1000_adapter *adapter) | |
1942 | { | |
1943 | struct e1000_hw *hw = &adapter->hw; | |
1944 | ||
bc7f75fa | 1945 | ew32(IMC, ~0); |
4662e82b BA |
1946 | if (adapter->msix_entries) |
1947 | ew32(EIAC_82574, 0); | |
bc7f75fa AK |
1948 | e1e_flush(); |
1949 | synchronize_irq(adapter->pdev->irq); | |
1950 | } | |
1951 | ||
1952 | /** | |
1953 | * e1000_irq_enable - Enable default interrupt generation settings | |
1954 | **/ | |
1955 | static void e1000_irq_enable(struct e1000_adapter *adapter) | |
1956 | { | |
1957 | struct e1000_hw *hw = &adapter->hw; | |
1958 | ||
4662e82b BA |
1959 | if (adapter->msix_entries) { |
1960 | ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); | |
1961 | ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); | |
1962 | } else { | |
1963 | ew32(IMS, IMS_ENABLE_MASK); | |
1964 | } | |
74ef9c39 | 1965 | e1e_flush(); |
bc7f75fa AK |
1966 | } |
1967 | ||
1968 | /** | |
1969 | * e1000_get_hw_control - get control of the h/w from f/w | |
1970 | * @adapter: address of board private structure | |
1971 | * | |
489815ce | 1972 | * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
1973 | * For ASF and Pass Through versions of f/w this means that |
1974 | * the driver is loaded. For AMT version (only with 82573) | |
1975 | * of the f/w this means that the network i/f is open. | |
1976 | **/ | |
1977 | static void e1000_get_hw_control(struct e1000_adapter *adapter) | |
1978 | { | |
1979 | struct e1000_hw *hw = &adapter->hw; | |
1980 | u32 ctrl_ext; | |
1981 | u32 swsm; | |
1982 | ||
1983 | /* Let firmware know the driver has taken over */ | |
1984 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
1985 | swsm = er32(SWSM); | |
1986 | ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); | |
1987 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
1988 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 1989 | ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
1990 | } |
1991 | } | |
1992 | ||
1993 | /** | |
1994 | * e1000_release_hw_control - release control of the h/w to f/w | |
1995 | * @adapter: address of board private structure | |
1996 | * | |
489815ce | 1997 | * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
1998 | * For ASF and Pass Through versions of f/w this means that the |
1999 | * driver is no longer loaded. For AMT version (only with 82573) i | |
2000 | * of the f/w this means that the network i/f is closed. | |
2001 | * | |
2002 | **/ | |
2003 | static void e1000_release_hw_control(struct e1000_adapter *adapter) | |
2004 | { | |
2005 | struct e1000_hw *hw = &adapter->hw; | |
2006 | u32 ctrl_ext; | |
2007 | u32 swsm; | |
2008 | ||
2009 | /* Let firmware taken over control of h/w */ | |
2010 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
2011 | swsm = er32(SWSM); | |
2012 | ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); | |
2013 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
2014 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 2015 | ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
2016 | } |
2017 | } | |
2018 | ||
bc7f75fa AK |
2019 | /** |
2020 | * @e1000_alloc_ring - allocate memory for a ring structure | |
2021 | **/ | |
2022 | static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, | |
2023 | struct e1000_ring *ring) | |
2024 | { | |
2025 | struct pci_dev *pdev = adapter->pdev; | |
2026 | ||
2027 | ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, | |
2028 | GFP_KERNEL); | |
2029 | if (!ring->desc) | |
2030 | return -ENOMEM; | |
2031 | ||
2032 | return 0; | |
2033 | } | |
2034 | ||
2035 | /** | |
2036 | * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) | |
2037 | * @adapter: board private structure | |
2038 | * | |
2039 | * Return 0 on success, negative on failure | |
2040 | **/ | |
2041 | int e1000e_setup_tx_resources(struct e1000_adapter *adapter) | |
2042 | { | |
2043 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2044 | int err = -ENOMEM, size; | |
2045 | ||
2046 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2047 | tx_ring->buffer_info = vmalloc(size); | |
2048 | if (!tx_ring->buffer_info) | |
2049 | goto err; | |
2050 | memset(tx_ring->buffer_info, 0, size); | |
2051 | ||
2052 | /* round up to nearest 4K */ | |
2053 | tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); | |
2054 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
2055 | ||
2056 | err = e1000_alloc_ring_dma(adapter, tx_ring); | |
2057 | if (err) | |
2058 | goto err; | |
2059 | ||
2060 | tx_ring->next_to_use = 0; | |
2061 | tx_ring->next_to_clean = 0; | |
bc7f75fa AK |
2062 | |
2063 | return 0; | |
2064 | err: | |
2065 | vfree(tx_ring->buffer_info); | |
44defeb3 | 2066 | e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
bc7f75fa AK |
2067 | return err; |
2068 | } | |
2069 | ||
2070 | /** | |
2071 | * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) | |
2072 | * @adapter: board private structure | |
2073 | * | |
2074 | * Returns 0 on success, negative on failure | |
2075 | **/ | |
2076 | int e1000e_setup_rx_resources(struct e1000_adapter *adapter) | |
2077 | { | |
2078 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
47f44e40 AK |
2079 | struct e1000_buffer *buffer_info; |
2080 | int i, size, desc_len, err = -ENOMEM; | |
bc7f75fa AK |
2081 | |
2082 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
2083 | rx_ring->buffer_info = vmalloc(size); | |
2084 | if (!rx_ring->buffer_info) | |
2085 | goto err; | |
2086 | memset(rx_ring->buffer_info, 0, size); | |
2087 | ||
47f44e40 AK |
2088 | for (i = 0; i < rx_ring->count; i++) { |
2089 | buffer_info = &rx_ring->buffer_info[i]; | |
2090 | buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, | |
2091 | sizeof(struct e1000_ps_page), | |
2092 | GFP_KERNEL); | |
2093 | if (!buffer_info->ps_pages) | |
2094 | goto err_pages; | |
2095 | } | |
bc7f75fa AK |
2096 | |
2097 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
2098 | ||
2099 | /* Round up to nearest 4K */ | |
2100 | rx_ring->size = rx_ring->count * desc_len; | |
2101 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
2102 | ||
2103 | err = e1000_alloc_ring_dma(adapter, rx_ring); | |
2104 | if (err) | |
47f44e40 | 2105 | goto err_pages; |
bc7f75fa AK |
2106 | |
2107 | rx_ring->next_to_clean = 0; | |
2108 | rx_ring->next_to_use = 0; | |
2109 | rx_ring->rx_skb_top = NULL; | |
2110 | ||
2111 | return 0; | |
47f44e40 AK |
2112 | |
2113 | err_pages: | |
2114 | for (i = 0; i < rx_ring->count; i++) { | |
2115 | buffer_info = &rx_ring->buffer_info[i]; | |
2116 | kfree(buffer_info->ps_pages); | |
2117 | } | |
bc7f75fa AK |
2118 | err: |
2119 | vfree(rx_ring->buffer_info); | |
44defeb3 | 2120 | e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
bc7f75fa AK |
2121 | return err; |
2122 | } | |
2123 | ||
2124 | /** | |
2125 | * e1000_clean_tx_ring - Free Tx Buffers | |
2126 | * @adapter: board private structure | |
2127 | **/ | |
2128 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter) | |
2129 | { | |
2130 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2131 | struct e1000_buffer *buffer_info; | |
2132 | unsigned long size; | |
2133 | unsigned int i; | |
2134 | ||
2135 | for (i = 0; i < tx_ring->count; i++) { | |
2136 | buffer_info = &tx_ring->buffer_info[i]; | |
2137 | e1000_put_txbuf(adapter, buffer_info); | |
2138 | } | |
2139 | ||
2140 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2141 | memset(tx_ring->buffer_info, 0, size); | |
2142 | ||
2143 | memset(tx_ring->desc, 0, tx_ring->size); | |
2144 | ||
2145 | tx_ring->next_to_use = 0; | |
2146 | tx_ring->next_to_clean = 0; | |
2147 | ||
2148 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
2149 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
2150 | } | |
2151 | ||
2152 | /** | |
2153 | * e1000e_free_tx_resources - Free Tx Resources per Queue | |
2154 | * @adapter: board private structure | |
2155 | * | |
2156 | * Free all transmit software resources | |
2157 | **/ | |
2158 | void e1000e_free_tx_resources(struct e1000_adapter *adapter) | |
2159 | { | |
2160 | struct pci_dev *pdev = adapter->pdev; | |
2161 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2162 | ||
2163 | e1000_clean_tx_ring(adapter); | |
2164 | ||
2165 | vfree(tx_ring->buffer_info); | |
2166 | tx_ring->buffer_info = NULL; | |
2167 | ||
2168 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, | |
2169 | tx_ring->dma); | |
2170 | tx_ring->desc = NULL; | |
2171 | } | |
2172 | ||
2173 | /** | |
2174 | * e1000e_free_rx_resources - Free Rx Resources | |
2175 | * @adapter: board private structure | |
2176 | * | |
2177 | * Free all receive software resources | |
2178 | **/ | |
2179 | ||
2180 | void e1000e_free_rx_resources(struct e1000_adapter *adapter) | |
2181 | { | |
2182 | struct pci_dev *pdev = adapter->pdev; | |
2183 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
47f44e40 | 2184 | int i; |
bc7f75fa AK |
2185 | |
2186 | e1000_clean_rx_ring(adapter); | |
2187 | ||
47f44e40 AK |
2188 | for (i = 0; i < rx_ring->count; i++) { |
2189 | kfree(rx_ring->buffer_info[i].ps_pages); | |
2190 | } | |
2191 | ||
bc7f75fa AK |
2192 | vfree(rx_ring->buffer_info); |
2193 | rx_ring->buffer_info = NULL; | |
2194 | ||
bc7f75fa AK |
2195 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
2196 | rx_ring->dma); | |
2197 | rx_ring->desc = NULL; | |
2198 | } | |
2199 | ||
2200 | /** | |
2201 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
489815ce AK |
2202 | * @adapter: pointer to adapter |
2203 | * @itr_setting: current adapter->itr | |
2204 | * @packets: the number of packets during this measurement interval | |
2205 | * @bytes: the number of bytes during this measurement interval | |
2206 | * | |
bc7f75fa AK |
2207 | * Stores a new ITR value based on packets and byte |
2208 | * counts during the last interrupt. The advantage of per interrupt | |
2209 | * computation is faster updates and more accurate ITR for the current | |
2210 | * traffic pattern. Constants in this function were computed | |
2211 | * based on theoretical maximum wire speed and thresholds were set based | |
2212 | * on testing data as well as attempting to minimize response time | |
4662e82b BA |
2213 | * while increasing bulk throughput. This functionality is controlled |
2214 | * by the InterruptThrottleRate module parameter. | |
bc7f75fa AK |
2215 | **/ |
2216 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
2217 | u16 itr_setting, int packets, | |
2218 | int bytes) | |
2219 | { | |
2220 | unsigned int retval = itr_setting; | |
2221 | ||
2222 | if (packets == 0) | |
2223 | goto update_itr_done; | |
2224 | ||
2225 | switch (itr_setting) { | |
2226 | case lowest_latency: | |
2227 | /* handle TSO and jumbo frames */ | |
2228 | if (bytes/packets > 8000) | |
2229 | retval = bulk_latency; | |
2230 | else if ((packets < 5) && (bytes > 512)) { | |
2231 | retval = low_latency; | |
2232 | } | |
2233 | break; | |
2234 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2235 | if (bytes > 10000) { | |
2236 | /* this if handles the TSO accounting */ | |
2237 | if (bytes/packets > 8000) { | |
2238 | retval = bulk_latency; | |
2239 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { | |
2240 | retval = bulk_latency; | |
2241 | } else if ((packets > 35)) { | |
2242 | retval = lowest_latency; | |
2243 | } | |
2244 | } else if (bytes/packets > 2000) { | |
2245 | retval = bulk_latency; | |
2246 | } else if (packets <= 2 && bytes < 512) { | |
2247 | retval = lowest_latency; | |
2248 | } | |
2249 | break; | |
2250 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2251 | if (bytes > 25000) { | |
2252 | if (packets > 35) { | |
2253 | retval = low_latency; | |
2254 | } | |
2255 | } else if (bytes < 6000) { | |
2256 | retval = low_latency; | |
2257 | } | |
2258 | break; | |
2259 | } | |
2260 | ||
2261 | update_itr_done: | |
2262 | return retval; | |
2263 | } | |
2264 | ||
2265 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2266 | { | |
2267 | struct e1000_hw *hw = &adapter->hw; | |
2268 | u16 current_itr; | |
2269 | u32 new_itr = adapter->itr; | |
2270 | ||
2271 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2272 | if (adapter->link_speed != SPEED_1000) { | |
2273 | current_itr = 0; | |
2274 | new_itr = 4000; | |
2275 | goto set_itr_now; | |
2276 | } | |
2277 | ||
2278 | adapter->tx_itr = e1000_update_itr(adapter, | |
2279 | adapter->tx_itr, | |
2280 | adapter->total_tx_packets, | |
2281 | adapter->total_tx_bytes); | |
2282 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
2283 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2284 | adapter->tx_itr = low_latency; | |
2285 | ||
2286 | adapter->rx_itr = e1000_update_itr(adapter, | |
2287 | adapter->rx_itr, | |
2288 | adapter->total_rx_packets, | |
2289 | adapter->total_rx_bytes); | |
2290 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
2291 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2292 | adapter->rx_itr = low_latency; | |
2293 | ||
2294 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2295 | ||
2296 | switch (current_itr) { | |
2297 | /* counts and packets in update_itr are dependent on these numbers */ | |
2298 | case lowest_latency: | |
2299 | new_itr = 70000; | |
2300 | break; | |
2301 | case low_latency: | |
2302 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2303 | break; | |
2304 | case bulk_latency: | |
2305 | new_itr = 4000; | |
2306 | break; | |
2307 | default: | |
2308 | break; | |
2309 | } | |
2310 | ||
2311 | set_itr_now: | |
2312 | if (new_itr != adapter->itr) { | |
ad68076e BA |
2313 | /* |
2314 | * this attempts to bias the interrupt rate towards Bulk | |
bc7f75fa | 2315 | * by adding intermediate steps when interrupt rate is |
ad68076e BA |
2316 | * increasing |
2317 | */ | |
bc7f75fa AK |
2318 | new_itr = new_itr > adapter->itr ? |
2319 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2320 | new_itr; | |
2321 | adapter->itr = new_itr; | |
4662e82b BA |
2322 | adapter->rx_ring->itr_val = new_itr; |
2323 | if (adapter->msix_entries) | |
2324 | adapter->rx_ring->set_itr = 1; | |
2325 | else | |
2326 | ew32(ITR, 1000000000 / (new_itr * 256)); | |
bc7f75fa AK |
2327 | } |
2328 | } | |
2329 | ||
4662e82b BA |
2330 | /** |
2331 | * e1000_alloc_queues - Allocate memory for all rings | |
2332 | * @adapter: board private structure to initialize | |
2333 | **/ | |
2334 | static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) | |
2335 | { | |
2336 | adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); | |
2337 | if (!adapter->tx_ring) | |
2338 | goto err; | |
2339 | ||
2340 | adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); | |
2341 | if (!adapter->rx_ring) | |
2342 | goto err; | |
2343 | ||
2344 | return 0; | |
2345 | err: | |
2346 | e_err("Unable to allocate memory for queues\n"); | |
2347 | kfree(adapter->rx_ring); | |
2348 | kfree(adapter->tx_ring); | |
2349 | return -ENOMEM; | |
2350 | } | |
2351 | ||
bc7f75fa AK |
2352 | /** |
2353 | * e1000_clean - NAPI Rx polling callback | |
ad68076e | 2354 | * @napi: struct associated with this polling callback |
489815ce | 2355 | * @budget: amount of packets driver is allowed to process this poll |
bc7f75fa AK |
2356 | **/ |
2357 | static int e1000_clean(struct napi_struct *napi, int budget) | |
2358 | { | |
2359 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); | |
4662e82b | 2360 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa | 2361 | struct net_device *poll_dev = adapter->netdev; |
679e8a0f | 2362 | int tx_cleaned = 1, work_done = 0; |
bc7f75fa | 2363 | |
4cf1653a | 2364 | adapter = netdev_priv(poll_dev); |
bc7f75fa | 2365 | |
4662e82b BA |
2366 | if (adapter->msix_entries && |
2367 | !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) | |
2368 | goto clean_rx; | |
2369 | ||
92af3e95 | 2370 | tx_cleaned = e1000_clean_tx_irq(adapter); |
bc7f75fa | 2371 | |
4662e82b | 2372 | clean_rx: |
bc7f75fa | 2373 | adapter->clean_rx(adapter, &work_done, budget); |
d2c7ddd6 | 2374 | |
12d04a3c | 2375 | if (!tx_cleaned) |
d2c7ddd6 | 2376 | work_done = budget; |
bc7f75fa | 2377 | |
53e52c72 DM |
2378 | /* If budget not fully consumed, exit the polling mode */ |
2379 | if (work_done < budget) { | |
bc7f75fa AK |
2380 | if (adapter->itr_setting & 3) |
2381 | e1000_set_itr(adapter); | |
288379f0 | 2382 | napi_complete(napi); |
a3c69fef JB |
2383 | if (!test_bit(__E1000_DOWN, &adapter->state)) { |
2384 | if (adapter->msix_entries) | |
2385 | ew32(IMS, adapter->rx_ring->ims_val); | |
2386 | else | |
2387 | e1000_irq_enable(adapter); | |
2388 | } | |
bc7f75fa AK |
2389 | } |
2390 | ||
2391 | return work_done; | |
2392 | } | |
2393 | ||
2394 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
2395 | { | |
2396 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2397 | struct e1000_hw *hw = &adapter->hw; | |
2398 | u32 vfta, index; | |
2399 | ||
2400 | /* don't update vlan cookie if already programmed */ | |
2401 | if ((adapter->hw.mng_cookie.status & | |
2402 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2403 | (vid == adapter->mng_vlan_id)) | |
2404 | return; | |
caaddaf8 | 2405 | |
bc7f75fa | 2406 | /* add VID to filter table */ |
caaddaf8 BA |
2407 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2408 | index = (vid >> 5) & 0x7F; | |
2409 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2410 | vfta |= (1 << (vid & 0x1F)); | |
2411 | hw->mac.ops.write_vfta(hw, index, vfta); | |
2412 | } | |
bc7f75fa AK |
2413 | } |
2414 | ||
2415 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
2416 | { | |
2417 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2418 | struct e1000_hw *hw = &adapter->hw; | |
2419 | u32 vfta, index; | |
2420 | ||
74ef9c39 JB |
2421 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2422 | e1000_irq_disable(adapter); | |
bc7f75fa | 2423 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
74ef9c39 JB |
2424 | |
2425 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
2426 | e1000_irq_enable(adapter); | |
bc7f75fa AK |
2427 | |
2428 | if ((adapter->hw.mng_cookie.status & | |
2429 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2430 | (vid == adapter->mng_vlan_id)) { | |
2431 | /* release control to f/w */ | |
2432 | e1000_release_hw_control(adapter); | |
2433 | return; | |
2434 | } | |
2435 | ||
2436 | /* remove VID from filter table */ | |
caaddaf8 BA |
2437 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2438 | index = (vid >> 5) & 0x7F; | |
2439 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2440 | vfta &= ~(1 << (vid & 0x1F)); | |
2441 | hw->mac.ops.write_vfta(hw, index, vfta); | |
2442 | } | |
bc7f75fa AK |
2443 | } |
2444 | ||
2445 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) | |
2446 | { | |
2447 | struct net_device *netdev = adapter->netdev; | |
2448 | u16 vid = adapter->hw.mng_cookie.vlan_id; | |
2449 | u16 old_vid = adapter->mng_vlan_id; | |
2450 | ||
2451 | if (!adapter->vlgrp) | |
2452 | return; | |
2453 | ||
2454 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { | |
2455 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
2456 | if (adapter->hw.mng_cookie.status & | |
2457 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
2458 | e1000_vlan_rx_add_vid(netdev, vid); | |
2459 | adapter->mng_vlan_id = vid; | |
2460 | } | |
2461 | ||
2462 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && | |
2463 | (vid != old_vid) && | |
2464 | !vlan_group_get_device(adapter->vlgrp, old_vid)) | |
2465 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
2466 | } else { | |
2467 | adapter->mng_vlan_id = vid; | |
2468 | } | |
2469 | } | |
2470 | ||
2471 | ||
2472 | static void e1000_vlan_rx_register(struct net_device *netdev, | |
2473 | struct vlan_group *grp) | |
2474 | { | |
2475 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2476 | struct e1000_hw *hw = &adapter->hw; | |
2477 | u32 ctrl, rctl; | |
2478 | ||
74ef9c39 JB |
2479 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2480 | e1000_irq_disable(adapter); | |
bc7f75fa AK |
2481 | adapter->vlgrp = grp; |
2482 | ||
2483 | if (grp) { | |
2484 | /* enable VLAN tag insert/strip */ | |
2485 | ctrl = er32(CTRL); | |
2486 | ctrl |= E1000_CTRL_VME; | |
2487 | ew32(CTRL, ctrl); | |
2488 | ||
2489 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
2490 | /* enable VLAN receive filtering */ | |
2491 | rctl = er32(RCTL); | |
bc7f75fa AK |
2492 | rctl &= ~E1000_RCTL_CFIEN; |
2493 | ew32(RCTL, rctl); | |
2494 | e1000_update_mng_vlan(adapter); | |
2495 | } | |
2496 | } else { | |
2497 | /* disable VLAN tag insert/strip */ | |
2498 | ctrl = er32(CTRL); | |
2499 | ctrl &= ~E1000_CTRL_VME; | |
2500 | ew32(CTRL, ctrl); | |
2501 | ||
2502 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
bc7f75fa AK |
2503 | if (adapter->mng_vlan_id != |
2504 | (u16)E1000_MNG_VLAN_NONE) { | |
2505 | e1000_vlan_rx_kill_vid(netdev, | |
2506 | adapter->mng_vlan_id); | |
2507 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
2508 | } | |
2509 | } | |
2510 | } | |
2511 | ||
74ef9c39 JB |
2512 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2513 | e1000_irq_enable(adapter); | |
bc7f75fa AK |
2514 | } |
2515 | ||
2516 | static void e1000_restore_vlan(struct e1000_adapter *adapter) | |
2517 | { | |
2518 | u16 vid; | |
2519 | ||
2520 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
2521 | ||
2522 | if (!adapter->vlgrp) | |
2523 | return; | |
2524 | ||
2525 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
2526 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
2527 | continue; | |
2528 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
2529 | } | |
2530 | } | |
2531 | ||
cd791618 | 2532 | static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
bc7f75fa AK |
2533 | { |
2534 | struct e1000_hw *hw = &adapter->hw; | |
cd791618 | 2535 | u32 manc, manc2h, mdef, i, j; |
bc7f75fa AK |
2536 | |
2537 | if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) | |
2538 | return; | |
2539 | ||
2540 | manc = er32(MANC); | |
2541 | ||
ad68076e BA |
2542 | /* |
2543 | * enable receiving management packets to the host. this will probably | |
bc7f75fa | 2544 | * generate destination unreachable messages from the host OS, but |
ad68076e BA |
2545 | * the packets will be handled on SMBUS |
2546 | */ | |
bc7f75fa AK |
2547 | manc |= E1000_MANC_EN_MNG2HOST; |
2548 | manc2h = er32(MANC2H); | |
cd791618 BA |
2549 | |
2550 | switch (hw->mac.type) { | |
2551 | default: | |
2552 | manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); | |
2553 | break; | |
2554 | case e1000_82574: | |
2555 | case e1000_82583: | |
2556 | /* | |
2557 | * Check if IPMI pass-through decision filter already exists; | |
2558 | * if so, enable it. | |
2559 | */ | |
2560 | for (i = 0, j = 0; i < 8; i++) { | |
2561 | mdef = er32(MDEF(i)); | |
2562 | ||
2563 | /* Ignore filters with anything other than IPMI ports */ | |
3b21b508 | 2564 | if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
cd791618 BA |
2565 | continue; |
2566 | ||
2567 | /* Enable this decision filter in MANC2H */ | |
2568 | if (mdef) | |
2569 | manc2h |= (1 << i); | |
2570 | ||
2571 | j |= mdef; | |
2572 | } | |
2573 | ||
2574 | if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) | |
2575 | break; | |
2576 | ||
2577 | /* Create new decision filter in an empty filter */ | |
2578 | for (i = 0, j = 0; i < 8; i++) | |
2579 | if (er32(MDEF(i)) == 0) { | |
2580 | ew32(MDEF(i), (E1000_MDEF_PORT_623 | | |
2581 | E1000_MDEF_PORT_664)); | |
2582 | manc2h |= (1 << 1); | |
2583 | j++; | |
2584 | break; | |
2585 | } | |
2586 | ||
2587 | if (!j) | |
2588 | e_warn("Unable to create IPMI pass-through filter\n"); | |
2589 | break; | |
2590 | } | |
2591 | ||
bc7f75fa AK |
2592 | ew32(MANC2H, manc2h); |
2593 | ew32(MANC, manc); | |
2594 | } | |
2595 | ||
2596 | /** | |
2597 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
2598 | * @adapter: board private structure | |
2599 | * | |
2600 | * Configure the Tx unit of the MAC after a reset. | |
2601 | **/ | |
2602 | static void e1000_configure_tx(struct e1000_adapter *adapter) | |
2603 | { | |
2604 | struct e1000_hw *hw = &adapter->hw; | |
2605 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2606 | u64 tdba; | |
2607 | u32 tdlen, tctl, tipg, tarc; | |
2608 | u32 ipgr1, ipgr2; | |
2609 | ||
2610 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
2611 | tdba = tx_ring->dma; | |
2612 | tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); | |
284901a9 | 2613 | ew32(TDBAL, (tdba & DMA_BIT_MASK(32))); |
bc7f75fa AK |
2614 | ew32(TDBAH, (tdba >> 32)); |
2615 | ew32(TDLEN, tdlen); | |
2616 | ew32(TDH, 0); | |
2617 | ew32(TDT, 0); | |
2618 | tx_ring->head = E1000_TDH; | |
2619 | tx_ring->tail = E1000_TDT; | |
2620 | ||
2621 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
2622 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */ | |
2623 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */ | |
2624 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */ | |
2625 | ||
2626 | if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN) | |
2627 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */ | |
2628 | ||
2629 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; | |
2630 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
2631 | ew32(TIPG, tipg); | |
2632 | ||
2633 | /* Set the Tx Interrupt Delay register */ | |
2634 | ew32(TIDV, adapter->tx_int_delay); | |
ad68076e | 2635 | /* Tx irq moderation */ |
bc7f75fa AK |
2636 | ew32(TADV, adapter->tx_abs_int_delay); |
2637 | ||
2638 | /* Program the Transmit Control Register */ | |
2639 | tctl = er32(TCTL); | |
2640 | tctl &= ~E1000_TCTL_CT; | |
2641 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
2642 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
2643 | ||
2644 | if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { | |
e9ec2c0f | 2645 | tarc = er32(TARC(0)); |
ad68076e BA |
2646 | /* |
2647 | * set the speed mode bit, we'll clear it if we're not at | |
2648 | * gigabit link later | |
2649 | */ | |
bc7f75fa AK |
2650 | #define SPEED_MODE_BIT (1 << 21) |
2651 | tarc |= SPEED_MODE_BIT; | |
e9ec2c0f | 2652 | ew32(TARC(0), tarc); |
bc7f75fa AK |
2653 | } |
2654 | ||
2655 | /* errata: program both queues to unweighted RR */ | |
2656 | if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { | |
e9ec2c0f | 2657 | tarc = er32(TARC(0)); |
bc7f75fa | 2658 | tarc |= 1; |
e9ec2c0f JK |
2659 | ew32(TARC(0), tarc); |
2660 | tarc = er32(TARC(1)); | |
bc7f75fa | 2661 | tarc |= 1; |
e9ec2c0f | 2662 | ew32(TARC(1), tarc); |
bc7f75fa AK |
2663 | } |
2664 | ||
bc7f75fa AK |
2665 | /* Setup Transmit Descriptor Settings for eop descriptor */ |
2666 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; | |
2667 | ||
2668 | /* only set IDE if we are delaying interrupts using the timers */ | |
2669 | if (adapter->tx_int_delay) | |
2670 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
2671 | ||
2672 | /* enable Report Status bit */ | |
2673 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
2674 | ||
2675 | ew32(TCTL, tctl); | |
2676 | ||
edfea6e6 | 2677 | e1000e_config_collision_dist(hw); |
bc7f75fa AK |
2678 | } |
2679 | ||
2680 | /** | |
2681 | * e1000_setup_rctl - configure the receive control registers | |
2682 | * @adapter: Board private structure | |
2683 | **/ | |
2684 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ | |
2685 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
2686 | static void e1000_setup_rctl(struct e1000_adapter *adapter) | |
2687 | { | |
2688 | struct e1000_hw *hw = &adapter->hw; | |
2689 | u32 rctl, rfctl; | |
2690 | u32 psrctl = 0; | |
2691 | u32 pages = 0; | |
2692 | ||
2693 | /* Program MC offset vector base */ | |
2694 | rctl = er32(RCTL); | |
2695 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
2696 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
2697 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
2698 | (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
2699 | ||
2700 | /* Do not Store bad packets */ | |
2701 | rctl &= ~E1000_RCTL_SBP; | |
2702 | ||
2703 | /* Enable Long Packet receive */ | |
2704 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
2705 | rctl &= ~E1000_RCTL_LPE; | |
2706 | else | |
2707 | rctl |= E1000_RCTL_LPE; | |
2708 | ||
eb7c3adb JK |
2709 | /* Some systems expect that the CRC is included in SMBUS traffic. The |
2710 | * hardware strips the CRC before sending to both SMBUS (BMC) and to | |
2711 | * host memory when this is enabled | |
2712 | */ | |
2713 | if (adapter->flags2 & FLAG2_CRC_STRIPPING) | |
2714 | rctl |= E1000_RCTL_SECRC; | |
5918bd88 | 2715 | |
a4f58f54 BA |
2716 | /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
2717 | if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { | |
2718 | u16 phy_data; | |
2719 | ||
2720 | e1e_rphy(hw, PHY_REG(770, 26), &phy_data); | |
2721 | phy_data &= 0xfff8; | |
2722 | phy_data |= (1 << 2); | |
2723 | e1e_wphy(hw, PHY_REG(770, 26), phy_data); | |
2724 | ||
2725 | e1e_rphy(hw, 22, &phy_data); | |
2726 | phy_data &= 0x0fff; | |
2727 | phy_data |= (1 << 14); | |
2728 | e1e_wphy(hw, 0x10, 0x2823); | |
2729 | e1e_wphy(hw, 0x11, 0x0003); | |
2730 | e1e_wphy(hw, 22, phy_data); | |
2731 | } | |
2732 | ||
d3738bb8 BA |
2733 | /* Workaround Si errata on 82579 - configure jumbo frame flow */ |
2734 | if (hw->mac.type == e1000_pch2lan) { | |
2735 | s32 ret_val; | |
2736 | ||
2737 | if (rctl & E1000_RCTL_LPE) | |
2738 | ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true); | |
2739 | else | |
2740 | ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false); | |
2741 | } | |
2742 | ||
bc7f75fa AK |
2743 | /* Setup buffer sizes */ |
2744 | rctl &= ~E1000_RCTL_SZ_4096; | |
2745 | rctl |= E1000_RCTL_BSEX; | |
2746 | switch (adapter->rx_buffer_len) { | |
bc7f75fa AK |
2747 | case 2048: |
2748 | default: | |
2749 | rctl |= E1000_RCTL_SZ_2048; | |
2750 | rctl &= ~E1000_RCTL_BSEX; | |
2751 | break; | |
2752 | case 4096: | |
2753 | rctl |= E1000_RCTL_SZ_4096; | |
2754 | break; | |
2755 | case 8192: | |
2756 | rctl |= E1000_RCTL_SZ_8192; | |
2757 | break; | |
2758 | case 16384: | |
2759 | rctl |= E1000_RCTL_SZ_16384; | |
2760 | break; | |
2761 | } | |
2762 | ||
2763 | /* | |
2764 | * 82571 and greater support packet-split where the protocol | |
2765 | * header is placed in skb->data and the packet data is | |
2766 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
2767 | * In the case of a non-split, skb->data is linearly filled, | |
2768 | * followed by the page buffers. Therefore, skb->data is | |
2769 | * sized to hold the largest protocol header. | |
2770 | * | |
2771 | * allocations using alloc_page take too long for regular MTU | |
2772 | * so only enable packet split for jumbo frames | |
2773 | * | |
2774 | * Using pages when the page size is greater than 16k wastes | |
2775 | * a lot of memory, since we allocate 3 pages at all times | |
2776 | * per packet. | |
2777 | */ | |
bc7f75fa | 2778 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
dbcb9fec | 2779 | if (!(adapter->flags & FLAG_HAS_ERT) && (pages <= 3) && |
97ac8cae | 2780 | (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
bc7f75fa | 2781 | adapter->rx_ps_pages = pages; |
97ac8cae BA |
2782 | else |
2783 | adapter->rx_ps_pages = 0; | |
bc7f75fa AK |
2784 | |
2785 | if (adapter->rx_ps_pages) { | |
2786 | /* Configure extra packet-split registers */ | |
2787 | rfctl = er32(RFCTL); | |
2788 | rfctl |= E1000_RFCTL_EXTEN; | |
ad68076e BA |
2789 | /* |
2790 | * disable packet split support for IPv6 extension headers, | |
2791 | * because some malformed IPv6 headers can hang the Rx | |
2792 | */ | |
bc7f75fa AK |
2793 | rfctl |= (E1000_RFCTL_IPV6_EX_DIS | |
2794 | E1000_RFCTL_NEW_IPV6_EXT_DIS); | |
2795 | ||
2796 | ew32(RFCTL, rfctl); | |
2797 | ||
140a7480 AK |
2798 | /* Enable Packet split descriptors */ |
2799 | rctl |= E1000_RCTL_DTYP_PS; | |
bc7f75fa AK |
2800 | |
2801 | psrctl |= adapter->rx_ps_bsize0 >> | |
2802 | E1000_PSRCTL_BSIZE0_SHIFT; | |
2803 | ||
2804 | switch (adapter->rx_ps_pages) { | |
2805 | case 3: | |
2806 | psrctl |= PAGE_SIZE << | |
2807 | E1000_PSRCTL_BSIZE3_SHIFT; | |
2808 | case 2: | |
2809 | psrctl |= PAGE_SIZE << | |
2810 | E1000_PSRCTL_BSIZE2_SHIFT; | |
2811 | case 1: | |
2812 | psrctl |= PAGE_SIZE >> | |
2813 | E1000_PSRCTL_BSIZE1_SHIFT; | |
2814 | break; | |
2815 | } | |
2816 | ||
2817 | ew32(PSRCTL, psrctl); | |
2818 | } | |
2819 | ||
2820 | ew32(RCTL, rctl); | |
318a94d6 JK |
2821 | /* just started the receive unit, no need to restart */ |
2822 | adapter->flags &= ~FLAG_RX_RESTART_NOW; | |
bc7f75fa AK |
2823 | } |
2824 | ||
2825 | /** | |
2826 | * e1000_configure_rx - Configure Receive Unit after Reset | |
2827 | * @adapter: board private structure | |
2828 | * | |
2829 | * Configure the Rx unit of the MAC after a reset. | |
2830 | **/ | |
2831 | static void e1000_configure_rx(struct e1000_adapter *adapter) | |
2832 | { | |
2833 | struct e1000_hw *hw = &adapter->hw; | |
2834 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
2835 | u64 rdba; | |
2836 | u32 rdlen, rctl, rxcsum, ctrl_ext; | |
2837 | ||
2838 | if (adapter->rx_ps_pages) { | |
2839 | /* this is a 32 byte descriptor */ | |
2840 | rdlen = rx_ring->count * | |
2841 | sizeof(union e1000_rx_desc_packet_split); | |
2842 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
2843 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
97ac8cae BA |
2844 | } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
2845 | rdlen = rx_ring->count * sizeof(struct e1000_rx_desc); | |
2846 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; | |
2847 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
bc7f75fa | 2848 | } else { |
97ac8cae | 2849 | rdlen = rx_ring->count * sizeof(struct e1000_rx_desc); |
bc7f75fa AK |
2850 | adapter->clean_rx = e1000_clean_rx_irq; |
2851 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
2852 | } | |
2853 | ||
2854 | /* disable receives while setting up the descriptors */ | |
2855 | rctl = er32(RCTL); | |
2856 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
2857 | e1e_flush(); | |
2858 | msleep(10); | |
2859 | ||
2860 | /* set the Receive Delay Timer Register */ | |
2861 | ew32(RDTR, adapter->rx_int_delay); | |
2862 | ||
2863 | /* irq moderation */ | |
2864 | ew32(RADV, adapter->rx_abs_int_delay); | |
2865 | if (adapter->itr_setting != 0) | |
ad68076e | 2866 | ew32(ITR, 1000000000 / (adapter->itr * 256)); |
bc7f75fa AK |
2867 | |
2868 | ctrl_ext = er32(CTRL_EXT); | |
bc7f75fa AK |
2869 | /* Auto-Mask interrupts upon ICR access */ |
2870 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
2871 | ew32(IAM, 0xffffffff); | |
2872 | ew32(CTRL_EXT, ctrl_ext); | |
2873 | e1e_flush(); | |
2874 | ||
ad68076e BA |
2875 | /* |
2876 | * Setup the HW Rx Head and Tail Descriptor Pointers and | |
2877 | * the Base and Length of the Rx Descriptor Ring | |
2878 | */ | |
bc7f75fa | 2879 | rdba = rx_ring->dma; |
284901a9 | 2880 | ew32(RDBAL, (rdba & DMA_BIT_MASK(32))); |
bc7f75fa AK |
2881 | ew32(RDBAH, (rdba >> 32)); |
2882 | ew32(RDLEN, rdlen); | |
2883 | ew32(RDH, 0); | |
2884 | ew32(RDT, 0); | |
2885 | rx_ring->head = E1000_RDH; | |
2886 | rx_ring->tail = E1000_RDT; | |
2887 | ||
2888 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
2889 | rxcsum = er32(RXCSUM); | |
2890 | if (adapter->flags & FLAG_RX_CSUM_ENABLED) { | |
2891 | rxcsum |= E1000_RXCSUM_TUOFL; | |
2892 | ||
ad68076e BA |
2893 | /* |
2894 | * IPv4 payload checksum for UDP fragments must be | |
2895 | * used in conjunction with packet-split. | |
2896 | */ | |
bc7f75fa AK |
2897 | if (adapter->rx_ps_pages) |
2898 | rxcsum |= E1000_RXCSUM_IPPCSE; | |
2899 | } else { | |
2900 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
2901 | /* no need to clear IPPCSE as it defaults to 0 */ | |
2902 | } | |
2903 | ew32(RXCSUM, rxcsum); | |
2904 | ||
ad68076e BA |
2905 | /* |
2906 | * Enable early receives on supported devices, only takes effect when | |
bc7f75fa | 2907 | * packet size is equal or larger than the specified value (in 8 byte |
ad68076e BA |
2908 | * units), e.g. using jumbo frames when setting to E1000_ERT_2048 |
2909 | */ | |
53ec5498 BA |
2910 | if (adapter->flags & FLAG_HAS_ERT) { |
2911 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
2912 | u32 rxdctl = er32(RXDCTL(0)); | |
2913 | ew32(RXDCTL(0), rxdctl | 0x3); | |
2914 | ew32(ERT, E1000_ERT_2048 | (1 << 13)); | |
2915 | /* | |
2916 | * With jumbo frames and early-receive enabled, | |
2917 | * excessive C-state transition latencies result in | |
2918 | * dropped transactions. | |
2919 | */ | |
ed77134b MG |
2920 | pm_qos_update_request( |
2921 | adapter->netdev->pm_qos_req, 55); | |
53ec5498 | 2922 | } else { |
ed77134b MG |
2923 | pm_qos_update_request( |
2924 | adapter->netdev->pm_qos_req, | |
2925 | PM_QOS_DEFAULT_VALUE); | |
53ec5498 | 2926 | } |
97ac8cae | 2927 | } |
bc7f75fa AK |
2928 | |
2929 | /* Enable Receives */ | |
2930 | ew32(RCTL, rctl); | |
2931 | } | |
2932 | ||
2933 | /** | |
e2de3eb6 | 2934 | * e1000_update_mc_addr_list - Update Multicast addresses |
bc7f75fa AK |
2935 | * @hw: pointer to the HW structure |
2936 | * @mc_addr_list: array of multicast addresses to program | |
2937 | * @mc_addr_count: number of multicast addresses to program | |
bc7f75fa | 2938 | * |
ab8932f3 | 2939 | * Updates the Multicast Table Array. |
bc7f75fa | 2940 | * The caller must have a packed mc_addr_list of multicast addresses. |
bc7f75fa | 2941 | **/ |
e2de3eb6 | 2942 | static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list, |
ab8932f3 | 2943 | u32 mc_addr_count) |
bc7f75fa | 2944 | { |
ab8932f3 | 2945 | hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count); |
bc7f75fa AK |
2946 | } |
2947 | ||
2948 | /** | |
2949 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2950 | * @netdev: network interface device structure | |
2951 | * | |
2952 | * The set_multi entry point is called whenever the multicast address | |
2953 | * list or the network interface flags are updated. This routine is | |
2954 | * responsible for configuring the hardware for proper multicast, | |
2955 | * promiscuous mode, and all-multi behavior. | |
2956 | **/ | |
2957 | static void e1000_set_multi(struct net_device *netdev) | |
2958 | { | |
2959 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2960 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 2961 | struct netdev_hw_addr *ha; |
bc7f75fa AK |
2962 | u8 *mta_list; |
2963 | u32 rctl; | |
2964 | int i; | |
2965 | ||
2966 | /* Check for Promiscuous and All Multicast modes */ | |
2967 | ||
2968 | rctl = er32(RCTL); | |
2969 | ||
2970 | if (netdev->flags & IFF_PROMISC) { | |
2971 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
746b9f02 | 2972 | rctl &= ~E1000_RCTL_VFE; |
bc7f75fa | 2973 | } else { |
746b9f02 PM |
2974 | if (netdev->flags & IFF_ALLMULTI) { |
2975 | rctl |= E1000_RCTL_MPE; | |
2976 | rctl &= ~E1000_RCTL_UPE; | |
2977 | } else { | |
2978 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2979 | } | |
78ed11a5 | 2980 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
746b9f02 | 2981 | rctl |= E1000_RCTL_VFE; |
bc7f75fa AK |
2982 | } |
2983 | ||
2984 | ew32(RCTL, rctl); | |
2985 | ||
7aeef972 JP |
2986 | if (!netdev_mc_empty(netdev)) { |
2987 | mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); | |
bc7f75fa AK |
2988 | if (!mta_list) |
2989 | return; | |
2990 | ||
2991 | /* prepare a packed array of only addresses. */ | |
7aeef972 | 2992 | i = 0; |
22bedad3 JP |
2993 | netdev_for_each_mc_addr(ha, netdev) |
2994 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
bc7f75fa | 2995 | |
ab8932f3 | 2996 | e1000_update_mc_addr_list(hw, mta_list, i); |
bc7f75fa AK |
2997 | kfree(mta_list); |
2998 | } else { | |
2999 | /* | |
3000 | * if we're called from probe, we might not have | |
3001 | * anything to do here, so clear out the list | |
3002 | */ | |
ab8932f3 | 3003 | e1000_update_mc_addr_list(hw, NULL, 0); |
bc7f75fa AK |
3004 | } |
3005 | } | |
3006 | ||
3007 | /** | |
ad68076e | 3008 | * e1000_configure - configure the hardware for Rx and Tx |
bc7f75fa AK |
3009 | * @adapter: private board structure |
3010 | **/ | |
3011 | static void e1000_configure(struct e1000_adapter *adapter) | |
3012 | { | |
3013 | e1000_set_multi(adapter->netdev); | |
3014 | ||
3015 | e1000_restore_vlan(adapter); | |
cd791618 | 3016 | e1000_init_manageability_pt(adapter); |
bc7f75fa AK |
3017 | |
3018 | e1000_configure_tx(adapter); | |
3019 | e1000_setup_rctl(adapter); | |
3020 | e1000_configure_rx(adapter); | |
ad68076e | 3021 | adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring)); |
bc7f75fa AK |
3022 | } |
3023 | ||
3024 | /** | |
3025 | * e1000e_power_up_phy - restore link in case the phy was powered down | |
3026 | * @adapter: address of board private structure | |
3027 | * | |
3028 | * The phy may be powered down to save power and turn off link when the | |
3029 | * driver is unloaded and wake on lan is not enabled (among others) | |
3030 | * *** this routine MUST be followed by a call to e1000e_reset *** | |
3031 | **/ | |
3032 | void e1000e_power_up_phy(struct e1000_adapter *adapter) | |
3033 | { | |
17f208de BA |
3034 | if (adapter->hw.phy.ops.power_up) |
3035 | adapter->hw.phy.ops.power_up(&adapter->hw); | |
bc7f75fa AK |
3036 | |
3037 | adapter->hw.mac.ops.setup_link(&adapter->hw); | |
3038 | } | |
3039 | ||
3040 | /** | |
3041 | * e1000_power_down_phy - Power down the PHY | |
3042 | * | |
17f208de BA |
3043 | * Power down the PHY so no link is implied when interface is down. |
3044 | * The PHY cannot be powered down if management or WoL is active. | |
bc7f75fa AK |
3045 | */ |
3046 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
3047 | { | |
bc7f75fa | 3048 | /* WoL is enabled */ |
23b66e2b | 3049 | if (adapter->wol) |
bc7f75fa AK |
3050 | return; |
3051 | ||
17f208de BA |
3052 | if (adapter->hw.phy.ops.power_down) |
3053 | adapter->hw.phy.ops.power_down(&adapter->hw); | |
bc7f75fa AK |
3054 | } |
3055 | ||
3056 | /** | |
3057 | * e1000e_reset - bring the hardware into a known good state | |
3058 | * | |
3059 | * This function boots the hardware and enables some settings that | |
3060 | * require a configuration cycle of the hardware - those cannot be | |
3061 | * set/changed during runtime. After reset the device needs to be | |
ad68076e | 3062 | * properly configured for Rx, Tx etc. |
bc7f75fa AK |
3063 | */ |
3064 | void e1000e_reset(struct e1000_adapter *adapter) | |
3065 | { | |
3066 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
318a94d6 | 3067 | struct e1000_fc_info *fc = &adapter->hw.fc; |
bc7f75fa AK |
3068 | struct e1000_hw *hw = &adapter->hw; |
3069 | u32 tx_space, min_tx_space, min_rx_space; | |
318a94d6 | 3070 | u32 pba = adapter->pba; |
bc7f75fa AK |
3071 | u16 hwm; |
3072 | ||
ad68076e | 3073 | /* reset Packet Buffer Allocation to default */ |
318a94d6 | 3074 | ew32(PBA, pba); |
df762464 | 3075 | |
318a94d6 | 3076 | if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
ad68076e BA |
3077 | /* |
3078 | * To maintain wire speed transmits, the Tx FIFO should be | |
bc7f75fa AK |
3079 | * large enough to accommodate two full transmit packets, |
3080 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
3081 | * the Rx FIFO should be large enough to accommodate at least | |
3082 | * one full receive packet and is similarly rounded up and | |
ad68076e BA |
3083 | * expressed in KB. |
3084 | */ | |
df762464 | 3085 | pba = er32(PBA); |
bc7f75fa | 3086 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
df762464 | 3087 | tx_space = pba >> 16; |
bc7f75fa | 3088 | /* lower 16 bits has Rx packet buffer allocation size in KB */ |
df762464 | 3089 | pba &= 0xffff; |
ad68076e BA |
3090 | /* |
3091 | * the Tx fifo also stores 16 bytes of information about the tx | |
3092 | * but don't include ethernet FCS because hardware appends it | |
318a94d6 JK |
3093 | */ |
3094 | min_tx_space = (adapter->max_frame_size + | |
bc7f75fa AK |
3095 | sizeof(struct e1000_tx_desc) - |
3096 | ETH_FCS_LEN) * 2; | |
3097 | min_tx_space = ALIGN(min_tx_space, 1024); | |
3098 | min_tx_space >>= 10; | |
3099 | /* software strips receive CRC, so leave room for it */ | |
318a94d6 | 3100 | min_rx_space = adapter->max_frame_size; |
bc7f75fa AK |
3101 | min_rx_space = ALIGN(min_rx_space, 1024); |
3102 | min_rx_space >>= 10; | |
3103 | ||
ad68076e BA |
3104 | /* |
3105 | * If current Tx allocation is less than the min Tx FIFO size, | |
bc7f75fa | 3106 | * and the min Tx FIFO size is less than the current Rx FIFO |
ad68076e BA |
3107 | * allocation, take space away from current Rx allocation |
3108 | */ | |
df762464 AK |
3109 | if ((tx_space < min_tx_space) && |
3110 | ((min_tx_space - tx_space) < pba)) { | |
3111 | pba -= min_tx_space - tx_space; | |
bc7f75fa | 3112 | |
ad68076e BA |
3113 | /* |
3114 | * if short on Rx space, Rx wins and must trump tx | |
3115 | * adjustment or use Early Receive if available | |
3116 | */ | |
df762464 | 3117 | if ((pba < min_rx_space) && |
bc7f75fa AK |
3118 | (!(adapter->flags & FLAG_HAS_ERT))) |
3119 | /* ERT enabled in e1000_configure_rx */ | |
df762464 | 3120 | pba = min_rx_space; |
bc7f75fa | 3121 | } |
df762464 AK |
3122 | |
3123 | ew32(PBA, pba); | |
bc7f75fa AK |
3124 | } |
3125 | ||
bc7f75fa | 3126 | |
ad68076e BA |
3127 | /* |
3128 | * flow control settings | |
3129 | * | |
38eb394e | 3130 | * The high water mark must be low enough to fit one full frame |
bc7f75fa AK |
3131 | * (or the size used for early receive) above it in the Rx FIFO. |
3132 | * Set it to the lower of: | |
3133 | * - 90% of the Rx FIFO size, and | |
3134 | * - the full Rx FIFO size minus the early receive size (for parts | |
3135 | * with ERT support assuming ERT set to E1000_ERT_2048), or | |
38eb394e | 3136 | * - the full Rx FIFO size minus one full frame |
ad68076e | 3137 | */ |
d3738bb8 BA |
3138 | if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
3139 | fc->pause_time = 0xFFFF; | |
3140 | else | |
3141 | fc->pause_time = E1000_FC_PAUSE_TIME; | |
3142 | fc->send_xon = 1; | |
3143 | fc->current_mode = fc->requested_mode; | |
3144 | ||
3145 | switch (hw->mac.type) { | |
3146 | default: | |
3147 | if ((adapter->flags & FLAG_HAS_ERT) && | |
3148 | (adapter->netdev->mtu > ETH_DATA_LEN)) | |
3149 | hwm = min(((pba << 10) * 9 / 10), | |
3150 | ((pba << 10) - (E1000_ERT_2048 << 3))); | |
3151 | else | |
3152 | hwm = min(((pba << 10) * 9 / 10), | |
3153 | ((pba << 10) - adapter->max_frame_size)); | |
3154 | ||
3155 | fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ | |
3156 | fc->low_water = fc->high_water - 8; | |
3157 | break; | |
3158 | case e1000_pchlan: | |
38eb394e BA |
3159 | /* |
3160 | * Workaround PCH LOM adapter hangs with certain network | |
3161 | * loads. If hangs persist, try disabling Tx flow control. | |
3162 | */ | |
3163 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
3164 | fc->high_water = 0x3500; | |
3165 | fc->low_water = 0x1500; | |
3166 | } else { | |
3167 | fc->high_water = 0x5000; | |
3168 | fc->low_water = 0x3000; | |
3169 | } | |
a305595b | 3170 | fc->refresh_time = 0x1000; |
d3738bb8 BA |
3171 | break; |
3172 | case e1000_pch2lan: | |
3173 | fc->high_water = 0x05C20; | |
3174 | fc->low_water = 0x05048; | |
3175 | fc->pause_time = 0x0650; | |
3176 | fc->refresh_time = 0x0400; | |
3177 | break; | |
38eb394e | 3178 | } |
bc7f75fa | 3179 | |
bc7f75fa AK |
3180 | /* Allow time for pending master requests to run */ |
3181 | mac->ops.reset_hw(hw); | |
97ac8cae BA |
3182 | |
3183 | /* | |
3184 | * For parts with AMT enabled, let the firmware know | |
3185 | * that the network interface is in control | |
3186 | */ | |
c43bc57e | 3187 | if (adapter->flags & FLAG_HAS_AMT) |
97ac8cae BA |
3188 | e1000_get_hw_control(adapter); |
3189 | ||
bc7f75fa AK |
3190 | ew32(WUC, 0); |
3191 | ||
3192 | if (mac->ops.init_hw(hw)) | |
44defeb3 | 3193 | e_err("Hardware Error\n"); |
bc7f75fa AK |
3194 | |
3195 | e1000_update_mng_vlan(adapter); | |
3196 | ||
3197 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
3198 | ew32(VET, ETH_P_8021Q); | |
3199 | ||
3200 | e1000e_reset_adaptive(hw); | |
3201 | e1000_get_phy_info(hw); | |
3202 | ||
918d7197 BA |
3203 | if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
3204 | !(adapter->flags & FLAG_SMART_POWER_DOWN)) { | |
bc7f75fa | 3205 | u16 phy_data = 0; |
ad68076e BA |
3206 | /* |
3207 | * speed up time to link by disabling smart power down, ignore | |
bc7f75fa | 3208 | * the return value of this function because there is nothing |
ad68076e BA |
3209 | * different we would do if it failed |
3210 | */ | |
bc7f75fa AK |
3211 | e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
3212 | phy_data &= ~IGP02E1000_PM_SPD; | |
3213 | e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); | |
3214 | } | |
bc7f75fa AK |
3215 | } |
3216 | ||
3217 | int e1000e_up(struct e1000_adapter *adapter) | |
3218 | { | |
3219 | struct e1000_hw *hw = &adapter->hw; | |
3220 | ||
3221 | /* hardware has been reset, we need to reload some things */ | |
3222 | e1000_configure(adapter); | |
3223 | ||
3224 | clear_bit(__E1000_DOWN, &adapter->state); | |
3225 | ||
3226 | napi_enable(&adapter->napi); | |
4662e82b BA |
3227 | if (adapter->msix_entries) |
3228 | e1000_configure_msix(adapter); | |
bc7f75fa AK |
3229 | e1000_irq_enable(adapter); |
3230 | ||
4cb9be7a JB |
3231 | netif_wake_queue(adapter->netdev); |
3232 | ||
bc7f75fa | 3233 | /* fire a link change interrupt to start the watchdog */ |
52a9b231 BA |
3234 | if (adapter->msix_entries) |
3235 | ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); | |
3236 | else | |
3237 | ew32(ICS, E1000_ICS_LSC); | |
3238 | ||
bc7f75fa AK |
3239 | return 0; |
3240 | } | |
3241 | ||
3242 | void e1000e_down(struct e1000_adapter *adapter) | |
3243 | { | |
3244 | struct net_device *netdev = adapter->netdev; | |
3245 | struct e1000_hw *hw = &adapter->hw; | |
3246 | u32 tctl, rctl; | |
3247 | ||
ad68076e BA |
3248 | /* |
3249 | * signal that we're down so the interrupt handler does not | |
3250 | * reschedule our watchdog timer | |
3251 | */ | |
bc7f75fa AK |
3252 | set_bit(__E1000_DOWN, &adapter->state); |
3253 | ||
3254 | /* disable receives in the hardware */ | |
3255 | rctl = er32(RCTL); | |
3256 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
3257 | /* flush and sleep below */ | |
3258 | ||
4cb9be7a | 3259 | netif_stop_queue(netdev); |
bc7f75fa AK |
3260 | |
3261 | /* disable transmits in the hardware */ | |
3262 | tctl = er32(TCTL); | |
3263 | tctl &= ~E1000_TCTL_EN; | |
3264 | ew32(TCTL, tctl); | |
3265 | /* flush both disables and wait for them to finish */ | |
3266 | e1e_flush(); | |
3267 | msleep(10); | |
3268 | ||
3269 | napi_disable(&adapter->napi); | |
3270 | e1000_irq_disable(adapter); | |
3271 | ||
3272 | del_timer_sync(&adapter->watchdog_timer); | |
3273 | del_timer_sync(&adapter->phy_info_timer); | |
3274 | ||
bc7f75fa AK |
3275 | netif_carrier_off(netdev); |
3276 | adapter->link_speed = 0; | |
3277 | adapter->link_duplex = 0; | |
3278 | ||
52cc3086 JK |
3279 | if (!pci_channel_offline(adapter->pdev)) |
3280 | e1000e_reset(adapter); | |
bc7f75fa AK |
3281 | e1000_clean_tx_ring(adapter); |
3282 | e1000_clean_rx_ring(adapter); | |
3283 | ||
3284 | /* | |
3285 | * TODO: for power management, we could drop the link and | |
3286 | * pci_disable_device here. | |
3287 | */ | |
3288 | } | |
3289 | ||
3290 | void e1000e_reinit_locked(struct e1000_adapter *adapter) | |
3291 | { | |
3292 | might_sleep(); | |
3293 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) | |
3294 | msleep(1); | |
3295 | e1000e_down(adapter); | |
3296 | e1000e_up(adapter); | |
3297 | clear_bit(__E1000_RESETTING, &adapter->state); | |
3298 | } | |
3299 | ||
3300 | /** | |
3301 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
3302 | * @adapter: board private structure to initialize | |
3303 | * | |
3304 | * e1000_sw_init initializes the Adapter private data structure. | |
3305 | * Fields are initialized based on PCI device information and | |
3306 | * OS network device settings (MTU size). | |
3307 | **/ | |
3308 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) | |
3309 | { | |
bc7f75fa AK |
3310 | struct net_device *netdev = adapter->netdev; |
3311 | ||
3312 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
3313 | adapter->rx_ps_bsize0 = 128; | |
318a94d6 JK |
3314 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
3315 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
bc7f75fa | 3316 | |
4662e82b | 3317 | e1000e_set_interrupt_capability(adapter); |
bc7f75fa | 3318 | |
4662e82b BA |
3319 | if (e1000_alloc_queues(adapter)) |
3320 | return -ENOMEM; | |
bc7f75fa | 3321 | |
bc7f75fa | 3322 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
bc7f75fa AK |
3323 | e1000_irq_disable(adapter); |
3324 | ||
bc7f75fa AK |
3325 | set_bit(__E1000_DOWN, &adapter->state); |
3326 | return 0; | |
bc7f75fa AK |
3327 | } |
3328 | ||
f8d59f78 BA |
3329 | /** |
3330 | * e1000_intr_msi_test - Interrupt Handler | |
3331 | * @irq: interrupt number | |
3332 | * @data: pointer to a network interface device structure | |
3333 | **/ | |
3334 | static irqreturn_t e1000_intr_msi_test(int irq, void *data) | |
3335 | { | |
3336 | struct net_device *netdev = data; | |
3337 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3338 | struct e1000_hw *hw = &adapter->hw; | |
3339 | u32 icr = er32(ICR); | |
3340 | ||
3bb99fe2 | 3341 | e_dbg("icr is %08X\n", icr); |
f8d59f78 BA |
3342 | if (icr & E1000_ICR_RXSEQ) { |
3343 | adapter->flags &= ~FLAG_MSI_TEST_FAILED; | |
3344 | wmb(); | |
3345 | } | |
3346 | ||
3347 | return IRQ_HANDLED; | |
3348 | } | |
3349 | ||
3350 | /** | |
3351 | * e1000_test_msi_interrupt - Returns 0 for successful test | |
3352 | * @adapter: board private struct | |
3353 | * | |
3354 | * code flow taken from tg3.c | |
3355 | **/ | |
3356 | static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) | |
3357 | { | |
3358 | struct net_device *netdev = adapter->netdev; | |
3359 | struct e1000_hw *hw = &adapter->hw; | |
3360 | int err; | |
3361 | ||
3362 | /* poll_enable hasn't been called yet, so don't need disable */ | |
3363 | /* clear any pending events */ | |
3364 | er32(ICR); | |
3365 | ||
3366 | /* free the real vector and request a test handler */ | |
3367 | e1000_free_irq(adapter); | |
4662e82b | 3368 | e1000e_reset_interrupt_capability(adapter); |
f8d59f78 BA |
3369 | |
3370 | /* Assume that the test fails, if it succeeds then the test | |
3371 | * MSI irq handler will unset this flag */ | |
3372 | adapter->flags |= FLAG_MSI_TEST_FAILED; | |
3373 | ||
3374 | err = pci_enable_msi(adapter->pdev); | |
3375 | if (err) | |
3376 | goto msi_test_failed; | |
3377 | ||
a0607fd3 | 3378 | err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
f8d59f78 BA |
3379 | netdev->name, netdev); |
3380 | if (err) { | |
3381 | pci_disable_msi(adapter->pdev); | |
3382 | goto msi_test_failed; | |
3383 | } | |
3384 | ||
3385 | wmb(); | |
3386 | ||
3387 | e1000_irq_enable(adapter); | |
3388 | ||
3389 | /* fire an unusual interrupt on the test handler */ | |
3390 | ew32(ICS, E1000_ICS_RXSEQ); | |
3391 | e1e_flush(); | |
3392 | msleep(50); | |
3393 | ||
3394 | e1000_irq_disable(adapter); | |
3395 | ||
3396 | rmb(); | |
3397 | ||
3398 | if (adapter->flags & FLAG_MSI_TEST_FAILED) { | |
4662e82b | 3399 | adapter->int_mode = E1000E_INT_MODE_LEGACY; |
f8d59f78 BA |
3400 | err = -EIO; |
3401 | e_info("MSI interrupt test failed!\n"); | |
3402 | } | |
3403 | ||
3404 | free_irq(adapter->pdev->irq, netdev); | |
3405 | pci_disable_msi(adapter->pdev); | |
3406 | ||
3407 | if (err == -EIO) | |
3408 | goto msi_test_failed; | |
3409 | ||
3410 | /* okay so the test worked, restore settings */ | |
3bb99fe2 | 3411 | e_dbg("MSI interrupt test succeeded!\n"); |
f8d59f78 | 3412 | msi_test_failed: |
4662e82b | 3413 | e1000e_set_interrupt_capability(adapter); |
f8d59f78 BA |
3414 | e1000_request_irq(adapter); |
3415 | return err; | |
3416 | } | |
3417 | ||
3418 | /** | |
3419 | * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored | |
3420 | * @adapter: board private struct | |
3421 | * | |
3422 | * code flow taken from tg3.c, called with e1000 interrupts disabled. | |
3423 | **/ | |
3424 | static int e1000_test_msi(struct e1000_adapter *adapter) | |
3425 | { | |
3426 | int err; | |
3427 | u16 pci_cmd; | |
3428 | ||
3429 | if (!(adapter->flags & FLAG_MSI_ENABLED)) | |
3430 | return 0; | |
3431 | ||
3432 | /* disable SERR in case the MSI write causes a master abort */ | |
3433 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); | |
36f2407f DN |
3434 | if (pci_cmd & PCI_COMMAND_SERR) |
3435 | pci_write_config_word(adapter->pdev, PCI_COMMAND, | |
3436 | pci_cmd & ~PCI_COMMAND_SERR); | |
f8d59f78 BA |
3437 | |
3438 | err = e1000_test_msi_interrupt(adapter); | |
3439 | ||
36f2407f DN |
3440 | /* re-enable SERR */ |
3441 | if (pci_cmd & PCI_COMMAND_SERR) { | |
3442 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); | |
3443 | pci_cmd |= PCI_COMMAND_SERR; | |
3444 | pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); | |
3445 | } | |
f8d59f78 BA |
3446 | |
3447 | /* success ! */ | |
3448 | if (!err) | |
3449 | return 0; | |
3450 | ||
3451 | /* EIO means MSI test failed */ | |
3452 | if (err != -EIO) | |
3453 | return err; | |
3454 | ||
3455 | /* back to INTx mode */ | |
3456 | e_warn("MSI interrupt test failed, using legacy interrupt.\n"); | |
3457 | ||
3458 | e1000_free_irq(adapter); | |
3459 | ||
3460 | err = e1000_request_irq(adapter); | |
3461 | ||
3462 | return err; | |
3463 | } | |
3464 | ||
bc7f75fa AK |
3465 | /** |
3466 | * e1000_open - Called when a network interface is made active | |
3467 | * @netdev: network interface device structure | |
3468 | * | |
3469 | * Returns 0 on success, negative value on failure | |
3470 | * | |
3471 | * The open entry point is called when a network interface is made | |
3472 | * active by the system (IFF_UP). At this point all resources needed | |
3473 | * for transmit and receive operations are allocated, the interrupt | |
3474 | * handler is registered with the OS, the watchdog timer is started, | |
3475 | * and the stack is notified that the interface is ready. | |
3476 | **/ | |
3477 | static int e1000_open(struct net_device *netdev) | |
3478 | { | |
3479 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3480 | struct e1000_hw *hw = &adapter->hw; | |
23606cf5 | 3481 | struct pci_dev *pdev = adapter->pdev; |
bc7f75fa AK |
3482 | int err; |
3483 | ||
3484 | /* disallow open during test */ | |
3485 | if (test_bit(__E1000_TESTING, &adapter->state)) | |
3486 | return -EBUSY; | |
3487 | ||
23606cf5 RW |
3488 | pm_runtime_get_sync(&pdev->dev); |
3489 | ||
9c563d20 JB |
3490 | netif_carrier_off(netdev); |
3491 | ||
bc7f75fa AK |
3492 | /* allocate transmit descriptors */ |
3493 | err = e1000e_setup_tx_resources(adapter); | |
3494 | if (err) | |
3495 | goto err_setup_tx; | |
3496 | ||
3497 | /* allocate receive descriptors */ | |
3498 | err = e1000e_setup_rx_resources(adapter); | |
3499 | if (err) | |
3500 | goto err_setup_rx; | |
3501 | ||
11b08be8 BA |
3502 | /* |
3503 | * If AMT is enabled, let the firmware know that the network | |
3504 | * interface is now open and reset the part to a known state. | |
3505 | */ | |
3506 | if (adapter->flags & FLAG_HAS_AMT) { | |
3507 | e1000_get_hw_control(adapter); | |
3508 | e1000e_reset(adapter); | |
3509 | } | |
3510 | ||
bc7f75fa AK |
3511 | e1000e_power_up_phy(adapter); |
3512 | ||
3513 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
3514 | if ((adapter->hw.mng_cookie.status & | |
3515 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) | |
3516 | e1000_update_mng_vlan(adapter); | |
3517 | ||
c128ec29 FM |
3518 | /* DMA latency requirement to workaround early-receive/jumbo issue */ |
3519 | if (adapter->flags & FLAG_HAS_ERT) | |
3520 | adapter->netdev->pm_qos_req = | |
3521 | pm_qos_add_request(PM_QOS_CPU_DMA_LATENCY, | |
3522 | PM_QOS_DEFAULT_VALUE); | |
3523 | ||
ad68076e BA |
3524 | /* |
3525 | * before we allocate an interrupt, we must be ready to handle it. | |
bc7f75fa AK |
3526 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
3527 | * as soon as we call pci_request_irq, so we have to setup our | |
ad68076e BA |
3528 | * clean_rx handler before we do so. |
3529 | */ | |
bc7f75fa AK |
3530 | e1000_configure(adapter); |
3531 | ||
3532 | err = e1000_request_irq(adapter); | |
3533 | if (err) | |
3534 | goto err_req_irq; | |
3535 | ||
f8d59f78 BA |
3536 | /* |
3537 | * Work around PCIe errata with MSI interrupts causing some chipsets to | |
3538 | * ignore e1000e MSI messages, which means we need to test our MSI | |
3539 | * interrupt now | |
3540 | */ | |
4662e82b | 3541 | if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
f8d59f78 BA |
3542 | err = e1000_test_msi(adapter); |
3543 | if (err) { | |
3544 | e_err("Interrupt allocation failed\n"); | |
3545 | goto err_req_irq; | |
3546 | } | |
3547 | } | |
3548 | ||
bc7f75fa AK |
3549 | /* From here on the code is the same as e1000e_up() */ |
3550 | clear_bit(__E1000_DOWN, &adapter->state); | |
3551 | ||
3552 | napi_enable(&adapter->napi); | |
3553 | ||
3554 | e1000_irq_enable(adapter); | |
3555 | ||
4cb9be7a | 3556 | netif_start_queue(netdev); |
d55b53ff | 3557 | |
23606cf5 RW |
3558 | adapter->idle_check = true; |
3559 | pm_runtime_put(&pdev->dev); | |
3560 | ||
bc7f75fa | 3561 | /* fire a link status change interrupt to start the watchdog */ |
52a9b231 BA |
3562 | if (adapter->msix_entries) |
3563 | ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); | |
3564 | else | |
3565 | ew32(ICS, E1000_ICS_LSC); | |
bc7f75fa AK |
3566 | |
3567 | return 0; | |
3568 | ||
3569 | err_req_irq: | |
3570 | e1000_release_hw_control(adapter); | |
3571 | e1000_power_down_phy(adapter); | |
3572 | e1000e_free_rx_resources(adapter); | |
3573 | err_setup_rx: | |
3574 | e1000e_free_tx_resources(adapter); | |
3575 | err_setup_tx: | |
3576 | e1000e_reset(adapter); | |
23606cf5 | 3577 | pm_runtime_put_sync(&pdev->dev); |
bc7f75fa AK |
3578 | |
3579 | return err; | |
3580 | } | |
3581 | ||
3582 | /** | |
3583 | * e1000_close - Disables a network interface | |
3584 | * @netdev: network interface device structure | |
3585 | * | |
3586 | * Returns 0, this is not allowed to fail | |
3587 | * | |
3588 | * The close entry point is called when an interface is de-activated | |
3589 | * by the OS. The hardware is still under the drivers control, but | |
3590 | * needs to be disabled. A global MAC reset is issued to stop the | |
3591 | * hardware, and all transmit and receive resources are freed. | |
3592 | **/ | |
3593 | static int e1000_close(struct net_device *netdev) | |
3594 | { | |
3595 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
23606cf5 | 3596 | struct pci_dev *pdev = adapter->pdev; |
bc7f75fa AK |
3597 | |
3598 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
23606cf5 RW |
3599 | |
3600 | pm_runtime_get_sync(&pdev->dev); | |
3601 | ||
3602 | if (!test_bit(__E1000_DOWN, &adapter->state)) { | |
3603 | e1000e_down(adapter); | |
3604 | e1000_free_irq(adapter); | |
3605 | } | |
bc7f75fa | 3606 | e1000_power_down_phy(adapter); |
bc7f75fa AK |
3607 | |
3608 | e1000e_free_tx_resources(adapter); | |
3609 | e1000e_free_rx_resources(adapter); | |
3610 | ||
ad68076e BA |
3611 | /* |
3612 | * kill manageability vlan ID if supported, but not if a vlan with | |
3613 | * the same ID is registered on the host OS (let 8021q kill it) | |
3614 | */ | |
bc7f75fa AK |
3615 | if ((adapter->hw.mng_cookie.status & |
3616 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
3617 | !(adapter->vlgrp && | |
3618 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) | |
3619 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
3620 | ||
ad68076e BA |
3621 | /* |
3622 | * If AMT is enabled, let the firmware know that the network | |
3623 | * interface is now closed | |
3624 | */ | |
c43bc57e | 3625 | if (adapter->flags & FLAG_HAS_AMT) |
bc7f75fa AK |
3626 | e1000_release_hw_control(adapter); |
3627 | ||
c128ec29 FM |
3628 | if (adapter->flags & FLAG_HAS_ERT) { |
3629 | pm_qos_remove_request(adapter->netdev->pm_qos_req); | |
3630 | adapter->netdev->pm_qos_req = NULL; | |
3631 | } | |
3632 | ||
23606cf5 RW |
3633 | pm_runtime_put_sync(&pdev->dev); |
3634 | ||
bc7f75fa AK |
3635 | return 0; |
3636 | } | |
3637 | /** | |
3638 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
3639 | * @netdev: network interface device structure | |
3640 | * @p: pointer to an address structure | |
3641 | * | |
3642 | * Returns 0 on success, negative on failure | |
3643 | **/ | |
3644 | static int e1000_set_mac(struct net_device *netdev, void *p) | |
3645 | { | |
3646 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3647 | struct sockaddr *addr = p; | |
3648 | ||
3649 | if (!is_valid_ether_addr(addr->sa_data)) | |
3650 | return -EADDRNOTAVAIL; | |
3651 | ||
3652 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
3653 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
3654 | ||
3655 | e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); | |
3656 | ||
3657 | if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { | |
3658 | /* activate the work around */ | |
3659 | e1000e_set_laa_state_82571(&adapter->hw, 1); | |
3660 | ||
ad68076e BA |
3661 | /* |
3662 | * Hold a copy of the LAA in RAR[14] This is done so that | |
bc7f75fa AK |
3663 | * between the time RAR[0] gets clobbered and the time it |
3664 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
3665 | * of the RARs and no incoming packets directed to this port | |
3666 | * are dropped. Eventually the LAA will be in RAR[0] and | |
ad68076e BA |
3667 | * RAR[14] |
3668 | */ | |
bc7f75fa AK |
3669 | e1000e_rar_set(&adapter->hw, |
3670 | adapter->hw.mac.addr, | |
3671 | adapter->hw.mac.rar_entry_count - 1); | |
3672 | } | |
3673 | ||
3674 | return 0; | |
3675 | } | |
3676 | ||
a8f88ff5 JB |
3677 | /** |
3678 | * e1000e_update_phy_task - work thread to update phy | |
3679 | * @work: pointer to our work struct | |
3680 | * | |
3681 | * this worker thread exists because we must acquire a | |
3682 | * semaphore to read the phy, which we could msleep while | |
3683 | * waiting for it, and we can't msleep in a timer. | |
3684 | **/ | |
3685 | static void e1000e_update_phy_task(struct work_struct *work) | |
3686 | { | |
3687 | struct e1000_adapter *adapter = container_of(work, | |
3688 | struct e1000_adapter, update_phy_task); | |
3689 | e1000_get_phy_info(&adapter->hw); | |
3690 | } | |
3691 | ||
ad68076e BA |
3692 | /* |
3693 | * Need to wait a few seconds after link up to get diagnostic information from | |
3694 | * the phy | |
3695 | */ | |
bc7f75fa AK |
3696 | static void e1000_update_phy_info(unsigned long data) |
3697 | { | |
3698 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
a8f88ff5 | 3699 | schedule_work(&adapter->update_phy_task); |
bc7f75fa AK |
3700 | } |
3701 | ||
8c7bbb92 BA |
3702 | /** |
3703 | * e1000e_update_phy_stats - Update the PHY statistics counters | |
3704 | * @adapter: board private structure | |
3705 | **/ | |
3706 | static void e1000e_update_phy_stats(struct e1000_adapter *adapter) | |
3707 | { | |
3708 | struct e1000_hw *hw = &adapter->hw; | |
3709 | s32 ret_val; | |
3710 | u16 phy_data; | |
3711 | ||
3712 | ret_val = hw->phy.ops.acquire(hw); | |
3713 | if (ret_val) | |
3714 | return; | |
3715 | ||
3716 | hw->phy.addr = 1; | |
3717 | ||
3718 | #define HV_PHY_STATS_PAGE 778 | |
3719 | /* | |
3720 | * A page set is expensive so check if already on desired page. | |
3721 | * If not, set to the page with the PHY status registers. | |
3722 | */ | |
3723 | ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, | |
3724 | &phy_data); | |
3725 | if (ret_val) | |
3726 | goto release; | |
3727 | if (phy_data != (HV_PHY_STATS_PAGE << IGP_PAGE_SHIFT)) { | |
3728 | ret_val = e1000e_write_phy_reg_mdic(hw, | |
3729 | IGP01E1000_PHY_PAGE_SELECT, | |
3730 | (HV_PHY_STATS_PAGE << | |
3731 | IGP_PAGE_SHIFT)); | |
3732 | if (ret_val) | |
3733 | goto release; | |
3734 | } | |
3735 | ||
3736 | /* Read/clear the upper 16-bit registers and read/accumulate lower */ | |
3737 | ||
3738 | /* Single Collision Count */ | |
3739 | e1000e_read_phy_reg_mdic(hw, HV_SCC_UPPER & MAX_PHY_REG_ADDRESS, | |
3740 | &phy_data); | |
3741 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3742 | HV_SCC_LOWER & MAX_PHY_REG_ADDRESS, | |
3743 | &phy_data); | |
3744 | if (!ret_val) | |
3745 | adapter->stats.scc += phy_data; | |
3746 | ||
3747 | /* Excessive Collision Count */ | |
3748 | e1000e_read_phy_reg_mdic(hw, HV_ECOL_UPPER & MAX_PHY_REG_ADDRESS, | |
3749 | &phy_data); | |
3750 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3751 | HV_ECOL_LOWER & MAX_PHY_REG_ADDRESS, | |
3752 | &phy_data); | |
3753 | if (!ret_val) | |
3754 | adapter->stats.ecol += phy_data; | |
3755 | ||
3756 | /* Multiple Collision Count */ | |
3757 | e1000e_read_phy_reg_mdic(hw, HV_MCC_UPPER & MAX_PHY_REG_ADDRESS, | |
3758 | &phy_data); | |
3759 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3760 | HV_MCC_LOWER & MAX_PHY_REG_ADDRESS, | |
3761 | &phy_data); | |
3762 | if (!ret_val) | |
3763 | adapter->stats.mcc += phy_data; | |
3764 | ||
3765 | /* Late Collision Count */ | |
3766 | e1000e_read_phy_reg_mdic(hw, HV_LATECOL_UPPER & MAX_PHY_REG_ADDRESS, | |
3767 | &phy_data); | |
3768 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3769 | HV_LATECOL_LOWER & | |
3770 | MAX_PHY_REG_ADDRESS, | |
3771 | &phy_data); | |
3772 | if (!ret_val) | |
3773 | adapter->stats.latecol += phy_data; | |
3774 | ||
3775 | /* Collision Count - also used for adaptive IFS */ | |
3776 | e1000e_read_phy_reg_mdic(hw, HV_COLC_UPPER & MAX_PHY_REG_ADDRESS, | |
3777 | &phy_data); | |
3778 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3779 | HV_COLC_LOWER & MAX_PHY_REG_ADDRESS, | |
3780 | &phy_data); | |
3781 | if (!ret_val) | |
3782 | hw->mac.collision_delta = phy_data; | |
3783 | ||
3784 | /* Defer Count */ | |
3785 | e1000e_read_phy_reg_mdic(hw, HV_DC_UPPER & MAX_PHY_REG_ADDRESS, | |
3786 | &phy_data); | |
3787 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3788 | HV_DC_LOWER & MAX_PHY_REG_ADDRESS, | |
3789 | &phy_data); | |
3790 | if (!ret_val) | |
3791 | adapter->stats.dc += phy_data; | |
3792 | ||
3793 | /* Transmit with no CRS */ | |
3794 | e1000e_read_phy_reg_mdic(hw, HV_TNCRS_UPPER & MAX_PHY_REG_ADDRESS, | |
3795 | &phy_data); | |
3796 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3797 | HV_TNCRS_LOWER & MAX_PHY_REG_ADDRESS, | |
3798 | &phy_data); | |
3799 | if (!ret_val) | |
3800 | adapter->stats.tncrs += phy_data; | |
3801 | ||
3802 | release: | |
3803 | hw->phy.ops.release(hw); | |
3804 | } | |
3805 | ||
bc7f75fa AK |
3806 | /** |
3807 | * e1000e_update_stats - Update the board statistics counters | |
3808 | * @adapter: board private structure | |
3809 | **/ | |
3810 | void e1000e_update_stats(struct e1000_adapter *adapter) | |
3811 | { | |
7274c20f | 3812 | struct net_device *netdev = adapter->netdev; |
bc7f75fa AK |
3813 | struct e1000_hw *hw = &adapter->hw; |
3814 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
3815 | |
3816 | /* | |
3817 | * Prevent stats update while adapter is being reset, or if the pci | |
3818 | * connection is down. | |
3819 | */ | |
3820 | if (adapter->link_speed == 0) | |
3821 | return; | |
3822 | if (pci_channel_offline(pdev)) | |
3823 | return; | |
3824 | ||
bc7f75fa AK |
3825 | adapter->stats.crcerrs += er32(CRCERRS); |
3826 | adapter->stats.gprc += er32(GPRC); | |
7c25769f BA |
3827 | adapter->stats.gorc += er32(GORCL); |
3828 | er32(GORCH); /* Clear gorc */ | |
bc7f75fa AK |
3829 | adapter->stats.bprc += er32(BPRC); |
3830 | adapter->stats.mprc += er32(MPRC); | |
3831 | adapter->stats.roc += er32(ROC); | |
3832 | ||
bc7f75fa | 3833 | adapter->stats.mpc += er32(MPC); |
8c7bbb92 BA |
3834 | |
3835 | /* Half-duplex statistics */ | |
3836 | if (adapter->link_duplex == HALF_DUPLEX) { | |
3837 | if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { | |
3838 | e1000e_update_phy_stats(adapter); | |
3839 | } else { | |
3840 | adapter->stats.scc += er32(SCC); | |
3841 | adapter->stats.ecol += er32(ECOL); | |
3842 | adapter->stats.mcc += er32(MCC); | |
3843 | adapter->stats.latecol += er32(LATECOL); | |
3844 | adapter->stats.dc += er32(DC); | |
3845 | ||
3846 | hw->mac.collision_delta = er32(COLC); | |
3847 | ||
3848 | if ((hw->mac.type != e1000_82574) && | |
3849 | (hw->mac.type != e1000_82583)) | |
3850 | adapter->stats.tncrs += er32(TNCRS); | |
3851 | } | |
3852 | adapter->stats.colc += hw->mac.collision_delta; | |
a4f58f54 | 3853 | } |
8c7bbb92 | 3854 | |
bc7f75fa AK |
3855 | adapter->stats.xonrxc += er32(XONRXC); |
3856 | adapter->stats.xontxc += er32(XONTXC); | |
3857 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
3858 | adapter->stats.xofftxc += er32(XOFFTXC); | |
bc7f75fa | 3859 | adapter->stats.gptc += er32(GPTC); |
7c25769f BA |
3860 | adapter->stats.gotc += er32(GOTCL); |
3861 | er32(GOTCH); /* Clear gotc */ | |
bc7f75fa AK |
3862 | adapter->stats.rnbc += er32(RNBC); |
3863 | adapter->stats.ruc += er32(RUC); | |
bc7f75fa AK |
3864 | |
3865 | adapter->stats.mptc += er32(MPTC); | |
3866 | adapter->stats.bptc += er32(BPTC); | |
3867 | ||
3868 | /* used for adaptive IFS */ | |
3869 | ||
3870 | hw->mac.tx_packet_delta = er32(TPT); | |
3871 | adapter->stats.tpt += hw->mac.tx_packet_delta; | |
bc7f75fa AK |
3872 | |
3873 | adapter->stats.algnerrc += er32(ALGNERRC); | |
3874 | adapter->stats.rxerrc += er32(RXERRC); | |
bc7f75fa AK |
3875 | adapter->stats.cexterr += er32(CEXTERR); |
3876 | adapter->stats.tsctc += er32(TSCTC); | |
3877 | adapter->stats.tsctfc += er32(TSCTFC); | |
3878 | ||
bc7f75fa | 3879 | /* Fill out the OS statistics structure */ |
7274c20f AK |
3880 | netdev->stats.multicast = adapter->stats.mprc; |
3881 | netdev->stats.collisions = adapter->stats.colc; | |
bc7f75fa AK |
3882 | |
3883 | /* Rx Errors */ | |
3884 | ||
ad68076e BA |
3885 | /* |
3886 | * RLEC on some newer hardware can be incorrect so build | |
3887 | * our own version based on RUC and ROC | |
3888 | */ | |
7274c20f | 3889 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
bc7f75fa AK |
3890 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
3891 | adapter->stats.ruc + adapter->stats.roc + | |
3892 | adapter->stats.cexterr; | |
7274c20f | 3893 | netdev->stats.rx_length_errors = adapter->stats.ruc + |
bc7f75fa | 3894 | adapter->stats.roc; |
7274c20f AK |
3895 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
3896 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; | |
3897 | netdev->stats.rx_missed_errors = adapter->stats.mpc; | |
bc7f75fa AK |
3898 | |
3899 | /* Tx Errors */ | |
7274c20f | 3900 | netdev->stats.tx_errors = adapter->stats.ecol + |
bc7f75fa | 3901 | adapter->stats.latecol; |
7274c20f AK |
3902 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
3903 | netdev->stats.tx_window_errors = adapter->stats.latecol; | |
3904 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; | |
bc7f75fa AK |
3905 | |
3906 | /* Tx Dropped needs to be maintained elsewhere */ | |
3907 | ||
bc7f75fa AK |
3908 | /* Management Stats */ |
3909 | adapter->stats.mgptc += er32(MGTPTC); | |
3910 | adapter->stats.mgprc += er32(MGTPRC); | |
3911 | adapter->stats.mgpdc += er32(MGTPDC); | |
bc7f75fa AK |
3912 | } |
3913 | ||
7c25769f BA |
3914 | /** |
3915 | * e1000_phy_read_status - Update the PHY register status snapshot | |
3916 | * @adapter: board private structure | |
3917 | **/ | |
3918 | static void e1000_phy_read_status(struct e1000_adapter *adapter) | |
3919 | { | |
3920 | struct e1000_hw *hw = &adapter->hw; | |
3921 | struct e1000_phy_regs *phy = &adapter->phy_regs; | |
3922 | int ret_val; | |
7c25769f BA |
3923 | |
3924 | if ((er32(STATUS) & E1000_STATUS_LU) && | |
3925 | (adapter->hw.phy.media_type == e1000_media_type_copper)) { | |
3926 | ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr); | |
3927 | ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr); | |
3928 | ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise); | |
3929 | ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa); | |
3930 | ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion); | |
3931 | ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000); | |
3932 | ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000); | |
3933 | ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus); | |
3934 | if (ret_val) | |
44defeb3 | 3935 | e_warn("Error reading PHY register\n"); |
7c25769f BA |
3936 | } else { |
3937 | /* | |
3938 | * Do not read PHY registers if link is not up | |
3939 | * Set values to typical power-on defaults | |
3940 | */ | |
3941 | phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); | |
3942 | phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | | |
3943 | BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | | |
3944 | BMSR_ERCAP); | |
3945 | phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | | |
3946 | ADVERTISE_ALL | ADVERTISE_CSMA); | |
3947 | phy->lpa = 0; | |
3948 | phy->expansion = EXPANSION_ENABLENPAGE; | |
3949 | phy->ctrl1000 = ADVERTISE_1000FULL; | |
3950 | phy->stat1000 = 0; | |
3951 | phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); | |
3952 | } | |
7c25769f BA |
3953 | } |
3954 | ||
bc7f75fa AK |
3955 | static void e1000_print_link_info(struct e1000_adapter *adapter) |
3956 | { | |
bc7f75fa AK |
3957 | struct e1000_hw *hw = &adapter->hw; |
3958 | u32 ctrl = er32(CTRL); | |
3959 | ||
8f12fe86 BA |
3960 | /* Link status message must follow this format for user tools */ |
3961 | printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, " | |
3962 | "Flow Control: %s\n", | |
3963 | adapter->netdev->name, | |
44defeb3 JK |
3964 | adapter->link_speed, |
3965 | (adapter->link_duplex == FULL_DUPLEX) ? | |
3966 | "Full Duplex" : "Half Duplex", | |
3967 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ? | |
3968 | "RX/TX" : | |
3969 | ((ctrl & E1000_CTRL_RFCE) ? "RX" : | |
3970 | ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" ))); | |
bc7f75fa AK |
3971 | } |
3972 | ||
0c6bdb30 | 3973 | static bool e1000e_has_link(struct e1000_adapter *adapter) |
318a94d6 JK |
3974 | { |
3975 | struct e1000_hw *hw = &adapter->hw; | |
3976 | bool link_active = 0; | |
3977 | s32 ret_val = 0; | |
3978 | ||
3979 | /* | |
3980 | * get_link_status is set on LSC (link status) interrupt or | |
3981 | * Rx sequence error interrupt. get_link_status will stay | |
3982 | * false until the check_for_link establishes link | |
3983 | * for copper adapters ONLY | |
3984 | */ | |
3985 | switch (hw->phy.media_type) { | |
3986 | case e1000_media_type_copper: | |
3987 | if (hw->mac.get_link_status) { | |
3988 | ret_val = hw->mac.ops.check_for_link(hw); | |
3989 | link_active = !hw->mac.get_link_status; | |
3990 | } else { | |
3991 | link_active = 1; | |
3992 | } | |
3993 | break; | |
3994 | case e1000_media_type_fiber: | |
3995 | ret_val = hw->mac.ops.check_for_link(hw); | |
3996 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); | |
3997 | break; | |
3998 | case e1000_media_type_internal_serdes: | |
3999 | ret_val = hw->mac.ops.check_for_link(hw); | |
4000 | link_active = adapter->hw.mac.serdes_has_link; | |
4001 | break; | |
4002 | default: | |
4003 | case e1000_media_type_unknown: | |
4004 | break; | |
4005 | } | |
4006 | ||
4007 | if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && | |
4008 | (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
4009 | /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ | |
44defeb3 | 4010 | e_info("Gigabit has been disabled, downgrading speed\n"); |
318a94d6 JK |
4011 | } |
4012 | ||
4013 | return link_active; | |
4014 | } | |
4015 | ||
4016 | static void e1000e_enable_receives(struct e1000_adapter *adapter) | |
4017 | { | |
4018 | /* make sure the receive unit is started */ | |
4019 | if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && | |
4020 | (adapter->flags & FLAG_RX_RESTART_NOW)) { | |
4021 | struct e1000_hw *hw = &adapter->hw; | |
4022 | u32 rctl = er32(RCTL); | |
4023 | ew32(RCTL, rctl | E1000_RCTL_EN); | |
4024 | adapter->flags &= ~FLAG_RX_RESTART_NOW; | |
4025 | } | |
4026 | } | |
4027 | ||
bc7f75fa AK |
4028 | /** |
4029 | * e1000_watchdog - Timer Call-back | |
4030 | * @data: pointer to adapter cast into an unsigned long | |
4031 | **/ | |
4032 | static void e1000_watchdog(unsigned long data) | |
4033 | { | |
4034 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
4035 | ||
4036 | /* Do the rest outside of interrupt context */ | |
4037 | schedule_work(&adapter->watchdog_task); | |
4038 | ||
4039 | /* TODO: make this use queue_delayed_work() */ | |
4040 | } | |
4041 | ||
4042 | static void e1000_watchdog_task(struct work_struct *work) | |
4043 | { | |
4044 | struct e1000_adapter *adapter = container_of(work, | |
4045 | struct e1000_adapter, watchdog_task); | |
bc7f75fa AK |
4046 | struct net_device *netdev = adapter->netdev; |
4047 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
75eb0fad | 4048 | struct e1000_phy_info *phy = &adapter->hw.phy; |
bc7f75fa AK |
4049 | struct e1000_ring *tx_ring = adapter->tx_ring; |
4050 | struct e1000_hw *hw = &adapter->hw; | |
4051 | u32 link, tctl; | |
bc7f75fa AK |
4052 | int tx_pending = 0; |
4053 | ||
b405e8df | 4054 | link = e1000e_has_link(adapter); |
318a94d6 | 4055 | if ((netif_carrier_ok(netdev)) && link) { |
23606cf5 RW |
4056 | /* Cancel scheduled suspend requests. */ |
4057 | pm_runtime_resume(netdev->dev.parent); | |
4058 | ||
318a94d6 | 4059 | e1000e_enable_receives(adapter); |
bc7f75fa | 4060 | goto link_up; |
bc7f75fa AK |
4061 | } |
4062 | ||
4063 | if ((e1000e_enable_tx_pkt_filtering(hw)) && | |
4064 | (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) | |
4065 | e1000_update_mng_vlan(adapter); | |
4066 | ||
bc7f75fa AK |
4067 | if (link) { |
4068 | if (!netif_carrier_ok(netdev)) { | |
4069 | bool txb2b = 1; | |
23606cf5 RW |
4070 | |
4071 | /* Cancel scheduled suspend requests. */ | |
4072 | pm_runtime_resume(netdev->dev.parent); | |
4073 | ||
318a94d6 | 4074 | /* update snapshot of PHY registers on LSC */ |
7c25769f | 4075 | e1000_phy_read_status(adapter); |
bc7f75fa AK |
4076 | mac->ops.get_link_up_info(&adapter->hw, |
4077 | &adapter->link_speed, | |
4078 | &adapter->link_duplex); | |
4079 | e1000_print_link_info(adapter); | |
f4187b56 BA |
4080 | /* |
4081 | * On supported PHYs, check for duplex mismatch only | |
4082 | * if link has autonegotiated at 10/100 half | |
4083 | */ | |
4084 | if ((hw->phy.type == e1000_phy_igp_3 || | |
4085 | hw->phy.type == e1000_phy_bm) && | |
4086 | (hw->mac.autoneg == true) && | |
4087 | (adapter->link_speed == SPEED_10 || | |
4088 | adapter->link_speed == SPEED_100) && | |
4089 | (adapter->link_duplex == HALF_DUPLEX)) { | |
4090 | u16 autoneg_exp; | |
4091 | ||
4092 | e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp); | |
4093 | ||
4094 | if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS)) | |
4095 | e_info("Autonegotiated half duplex but" | |
4096 | " link partner cannot autoneg. " | |
4097 | " Try forcing full duplex if " | |
4098 | "link gets many collisions.\n"); | |
4099 | } | |
4100 | ||
f49c57e1 | 4101 | /* adjust timeout factor according to speed/duplex */ |
bc7f75fa AK |
4102 | adapter->tx_timeout_factor = 1; |
4103 | switch (adapter->link_speed) { | |
4104 | case SPEED_10: | |
4105 | txb2b = 0; | |
10f1b492 | 4106 | adapter->tx_timeout_factor = 16; |
bc7f75fa AK |
4107 | break; |
4108 | case SPEED_100: | |
4109 | txb2b = 0; | |
4c86e0b9 | 4110 | adapter->tx_timeout_factor = 10; |
bc7f75fa AK |
4111 | break; |
4112 | } | |
4113 | ||
ad68076e BA |
4114 | /* |
4115 | * workaround: re-program speed mode bit after | |
4116 | * link-up event | |
4117 | */ | |
bc7f75fa AK |
4118 | if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
4119 | !txb2b) { | |
4120 | u32 tarc0; | |
e9ec2c0f | 4121 | tarc0 = er32(TARC(0)); |
bc7f75fa | 4122 | tarc0 &= ~SPEED_MODE_BIT; |
e9ec2c0f | 4123 | ew32(TARC(0), tarc0); |
bc7f75fa AK |
4124 | } |
4125 | ||
ad68076e BA |
4126 | /* |
4127 | * disable TSO for pcie and 10/100 speeds, to avoid | |
4128 | * some hardware issues | |
4129 | */ | |
bc7f75fa AK |
4130 | if (!(adapter->flags & FLAG_TSO_FORCE)) { |
4131 | switch (adapter->link_speed) { | |
4132 | case SPEED_10: | |
4133 | case SPEED_100: | |
44defeb3 | 4134 | e_info("10/100 speed: disabling TSO\n"); |
bc7f75fa AK |
4135 | netdev->features &= ~NETIF_F_TSO; |
4136 | netdev->features &= ~NETIF_F_TSO6; | |
4137 | break; | |
4138 | case SPEED_1000: | |
4139 | netdev->features |= NETIF_F_TSO; | |
4140 | netdev->features |= NETIF_F_TSO6; | |
4141 | break; | |
4142 | default: | |
4143 | /* oops */ | |
4144 | break; | |
4145 | } | |
4146 | } | |
4147 | ||
ad68076e BA |
4148 | /* |
4149 | * enable transmits in the hardware, need to do this | |
4150 | * after setting TARC(0) | |
4151 | */ | |
bc7f75fa AK |
4152 | tctl = er32(TCTL); |
4153 | tctl |= E1000_TCTL_EN; | |
4154 | ew32(TCTL, tctl); | |
4155 | ||
75eb0fad BA |
4156 | /* |
4157 | * Perform any post-link-up configuration before | |
4158 | * reporting link up. | |
4159 | */ | |
4160 | if (phy->ops.cfg_on_link_up) | |
4161 | phy->ops.cfg_on_link_up(hw); | |
4162 | ||
bc7f75fa | 4163 | netif_carrier_on(netdev); |
bc7f75fa AK |
4164 | |
4165 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
4166 | mod_timer(&adapter->phy_info_timer, | |
4167 | round_jiffies(jiffies + 2 * HZ)); | |
bc7f75fa AK |
4168 | } |
4169 | } else { | |
4170 | if (netif_carrier_ok(netdev)) { | |
4171 | adapter->link_speed = 0; | |
4172 | adapter->link_duplex = 0; | |
8f12fe86 BA |
4173 | /* Link status message must follow this format */ |
4174 | printk(KERN_INFO "e1000e: %s NIC Link is Down\n", | |
4175 | adapter->netdev->name); | |
bc7f75fa | 4176 | netif_carrier_off(netdev); |
bc7f75fa AK |
4177 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
4178 | mod_timer(&adapter->phy_info_timer, | |
4179 | round_jiffies(jiffies + 2 * HZ)); | |
4180 | ||
4181 | if (adapter->flags & FLAG_RX_NEEDS_RESTART) | |
4182 | schedule_work(&adapter->reset_task); | |
23606cf5 RW |
4183 | else |
4184 | pm_schedule_suspend(netdev->dev.parent, | |
4185 | LINK_TIMEOUT); | |
bc7f75fa AK |
4186 | } |
4187 | } | |
4188 | ||
4189 | link_up: | |
4190 | e1000e_update_stats(adapter); | |
4191 | ||
4192 | mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
4193 | adapter->tpt_old = adapter->stats.tpt; | |
4194 | mac->collision_delta = adapter->stats.colc - adapter->colc_old; | |
4195 | adapter->colc_old = adapter->stats.colc; | |
4196 | ||
7c25769f BA |
4197 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
4198 | adapter->gorc_old = adapter->stats.gorc; | |
4199 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; | |
4200 | adapter->gotc_old = adapter->stats.gotc; | |
bc7f75fa AK |
4201 | |
4202 | e1000e_update_adaptive(&adapter->hw); | |
4203 | ||
4204 | if (!netif_carrier_ok(netdev)) { | |
4205 | tx_pending = (e1000_desc_unused(tx_ring) + 1 < | |
4206 | tx_ring->count); | |
4207 | if (tx_pending) { | |
ad68076e BA |
4208 | /* |
4209 | * We've lost link, so the controller stops DMA, | |
bc7f75fa AK |
4210 | * but we've got queued Tx work that's never going |
4211 | * to get done, so reset controller to flush Tx. | |
ad68076e BA |
4212 | * (Do the reset outside of interrupt context). |
4213 | */ | |
bc7f75fa AK |
4214 | adapter->tx_timeout_count++; |
4215 | schedule_work(&adapter->reset_task); | |
c2d5ab49 JB |
4216 | /* return immediately since reset is imminent */ |
4217 | return; | |
bc7f75fa AK |
4218 | } |
4219 | } | |
4220 | ||
eab2abf5 JB |
4221 | /* Simple mode for Interrupt Throttle Rate (ITR) */ |
4222 | if (adapter->itr_setting == 4) { | |
4223 | /* | |
4224 | * Symmetric Tx/Rx gets a reduced ITR=2000; | |
4225 | * Total asymmetrical Tx or Rx gets ITR=8000; | |
4226 | * everyone else is between 2000-8000. | |
4227 | */ | |
4228 | u32 goc = (adapter->gotc + adapter->gorc) / 10000; | |
4229 | u32 dif = (adapter->gotc > adapter->gorc ? | |
4230 | adapter->gotc - adapter->gorc : | |
4231 | adapter->gorc - adapter->gotc) / 10000; | |
4232 | u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
4233 | ||
4234 | ew32(ITR, 1000000000 / (itr * 256)); | |
4235 | } | |
4236 | ||
ad68076e | 4237 | /* Cause software interrupt to ensure Rx ring is cleaned */ |
4662e82b BA |
4238 | if (adapter->msix_entries) |
4239 | ew32(ICS, adapter->rx_ring->ims_val); | |
4240 | else | |
4241 | ew32(ICS, E1000_ICS_RXDMT0); | |
bc7f75fa AK |
4242 | |
4243 | /* Force detection of hung controller every watchdog period */ | |
4244 | adapter->detect_tx_hung = 1; | |
4245 | ||
ad68076e BA |
4246 | /* |
4247 | * With 82571 controllers, LAA may be overwritten due to controller | |
4248 | * reset from the other port. Set the appropriate LAA in RAR[0] | |
4249 | */ | |
bc7f75fa AK |
4250 | if (e1000e_get_laa_state_82571(hw)) |
4251 | e1000e_rar_set(hw, adapter->hw.mac.addr, 0); | |
4252 | ||
4253 | /* Reset the timer */ | |
4254 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
4255 | mod_timer(&adapter->watchdog_timer, | |
4256 | round_jiffies(jiffies + 2 * HZ)); | |
4257 | } | |
4258 | ||
4259 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
4260 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
4261 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
4262 | #define E1000_TX_FLAGS_IPV4 0x00000008 | |
4263 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 | |
4264 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
4265 | ||
4266 | static int e1000_tso(struct e1000_adapter *adapter, | |
4267 | struct sk_buff *skb) | |
4268 | { | |
4269 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
4270 | struct e1000_context_desc *context_desc; | |
4271 | struct e1000_buffer *buffer_info; | |
4272 | unsigned int i; | |
4273 | u32 cmd_length = 0; | |
4274 | u16 ipcse = 0, tucse, mss; | |
4275 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
4276 | int err; | |
4277 | ||
3d5e33c9 BA |
4278 | if (!skb_is_gso(skb)) |
4279 | return 0; | |
bc7f75fa | 4280 | |
3d5e33c9 BA |
4281 | if (skb_header_cloned(skb)) { |
4282 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
4283 | if (err) | |
4284 | return err; | |
bc7f75fa AK |
4285 | } |
4286 | ||
3d5e33c9 BA |
4287 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
4288 | mss = skb_shinfo(skb)->gso_size; | |
4289 | if (skb->protocol == htons(ETH_P_IP)) { | |
4290 | struct iphdr *iph = ip_hdr(skb); | |
4291 | iph->tot_len = 0; | |
4292 | iph->check = 0; | |
4293 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, | |
4294 | 0, IPPROTO_TCP, 0); | |
4295 | cmd_length = E1000_TXD_CMD_IP; | |
4296 | ipcse = skb_transport_offset(skb) - 1; | |
8e1e8a47 | 4297 | } else if (skb_is_gso_v6(skb)) { |
3d5e33c9 BA |
4298 | ipv6_hdr(skb)->payload_len = 0; |
4299 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
4300 | &ipv6_hdr(skb)->daddr, | |
4301 | 0, IPPROTO_TCP, 0); | |
4302 | ipcse = 0; | |
4303 | } | |
4304 | ipcss = skb_network_offset(skb); | |
4305 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; | |
4306 | tucss = skb_transport_offset(skb); | |
4307 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; | |
4308 | tucse = 0; | |
4309 | ||
4310 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
4311 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); | |
4312 | ||
4313 | i = tx_ring->next_to_use; | |
4314 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
4315 | buffer_info = &tx_ring->buffer_info[i]; | |
4316 | ||
4317 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
4318 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
4319 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
4320 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
4321 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
4322 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
4323 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
4324 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
4325 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
4326 | ||
4327 | buffer_info->time_stamp = jiffies; | |
4328 | buffer_info->next_to_watch = i; | |
4329 | ||
4330 | i++; | |
4331 | if (i == tx_ring->count) | |
4332 | i = 0; | |
4333 | tx_ring->next_to_use = i; | |
4334 | ||
4335 | return 1; | |
bc7f75fa AK |
4336 | } |
4337 | ||
4338 | static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) | |
4339 | { | |
4340 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
4341 | struct e1000_context_desc *context_desc; | |
4342 | struct e1000_buffer *buffer_info; | |
4343 | unsigned int i; | |
4344 | u8 css; | |
af807c82 | 4345 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
5f66f208 | 4346 | __be16 protocol; |
bc7f75fa | 4347 | |
af807c82 DG |
4348 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
4349 | return 0; | |
bc7f75fa | 4350 | |
5f66f208 AJ |
4351 | if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
4352 | protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; | |
4353 | else | |
4354 | protocol = skb->protocol; | |
4355 | ||
3f518390 | 4356 | switch (protocol) { |
09640e63 | 4357 | case cpu_to_be16(ETH_P_IP): |
af807c82 DG |
4358 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
4359 | cmd_len |= E1000_TXD_CMD_TCP; | |
4360 | break; | |
09640e63 | 4361 | case cpu_to_be16(ETH_P_IPV6): |
af807c82 DG |
4362 | /* XXX not handling all IPV6 headers */ |
4363 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
4364 | cmd_len |= E1000_TXD_CMD_TCP; | |
4365 | break; | |
4366 | default: | |
4367 | if (unlikely(net_ratelimit())) | |
5f66f208 AJ |
4368 | e_warn("checksum_partial proto=%x!\n", |
4369 | be16_to_cpu(protocol)); | |
af807c82 | 4370 | break; |
bc7f75fa AK |
4371 | } |
4372 | ||
af807c82 DG |
4373 | css = skb_transport_offset(skb); |
4374 | ||
4375 | i = tx_ring->next_to_use; | |
4376 | buffer_info = &tx_ring->buffer_info[i]; | |
4377 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
4378 | ||
4379 | context_desc->lower_setup.ip_config = 0; | |
4380 | context_desc->upper_setup.tcp_fields.tucss = css; | |
4381 | context_desc->upper_setup.tcp_fields.tucso = | |
4382 | css + skb->csum_offset; | |
4383 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
4384 | context_desc->tcp_seg_setup.data = 0; | |
4385 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
4386 | ||
4387 | buffer_info->time_stamp = jiffies; | |
4388 | buffer_info->next_to_watch = i; | |
4389 | ||
4390 | i++; | |
4391 | if (i == tx_ring->count) | |
4392 | i = 0; | |
4393 | tx_ring->next_to_use = i; | |
4394 | ||
4395 | return 1; | |
bc7f75fa AK |
4396 | } |
4397 | ||
4398 | #define E1000_MAX_PER_TXD 8192 | |
4399 | #define E1000_MAX_TXD_PWR 12 | |
4400 | ||
4401 | static int e1000_tx_map(struct e1000_adapter *adapter, | |
4402 | struct sk_buff *skb, unsigned int first, | |
4403 | unsigned int max_per_txd, unsigned int nr_frags, | |
4404 | unsigned int mss) | |
4405 | { | |
4406 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
03b1320d | 4407 | struct pci_dev *pdev = adapter->pdev; |
1b7719c4 | 4408 | struct e1000_buffer *buffer_info; |
8ddc951c | 4409 | unsigned int len = skb_headlen(skb); |
03b1320d | 4410 | unsigned int offset = 0, size, count = 0, i; |
9ed318d5 | 4411 | unsigned int f, bytecount, segs; |
bc7f75fa AK |
4412 | |
4413 | i = tx_ring->next_to_use; | |
4414 | ||
4415 | while (len) { | |
1b7719c4 | 4416 | buffer_info = &tx_ring->buffer_info[i]; |
bc7f75fa AK |
4417 | size = min(len, max_per_txd); |
4418 | ||
bc7f75fa | 4419 | buffer_info->length = size; |
bc7f75fa | 4420 | buffer_info->time_stamp = jiffies; |
bc7f75fa | 4421 | buffer_info->next_to_watch = i; |
0be3f55f NN |
4422 | buffer_info->dma = dma_map_single(&pdev->dev, |
4423 | skb->data + offset, | |
4424 | size, DMA_TO_DEVICE); | |
03b1320d | 4425 | buffer_info->mapped_as_page = false; |
0be3f55f | 4426 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
03b1320d | 4427 | goto dma_error; |
bc7f75fa AK |
4428 | |
4429 | len -= size; | |
4430 | offset += size; | |
03b1320d | 4431 | count++; |
1b7719c4 AD |
4432 | |
4433 | if (len) { | |
4434 | i++; | |
4435 | if (i == tx_ring->count) | |
4436 | i = 0; | |
4437 | } | |
bc7f75fa AK |
4438 | } |
4439 | ||
4440 | for (f = 0; f < nr_frags; f++) { | |
4441 | struct skb_frag_struct *frag; | |
4442 | ||
4443 | frag = &skb_shinfo(skb)->frags[f]; | |
4444 | len = frag->size; | |
03b1320d | 4445 | offset = frag->page_offset; |
bc7f75fa AK |
4446 | |
4447 | while (len) { | |
1b7719c4 AD |
4448 | i++; |
4449 | if (i == tx_ring->count) | |
4450 | i = 0; | |
4451 | ||
bc7f75fa AK |
4452 | buffer_info = &tx_ring->buffer_info[i]; |
4453 | size = min(len, max_per_txd); | |
bc7f75fa AK |
4454 | |
4455 | buffer_info->length = size; | |
4456 | buffer_info->time_stamp = jiffies; | |
bc7f75fa | 4457 | buffer_info->next_to_watch = i; |
0be3f55f | 4458 | buffer_info->dma = dma_map_page(&pdev->dev, frag->page, |
03b1320d | 4459 | offset, size, |
0be3f55f | 4460 | DMA_TO_DEVICE); |
03b1320d | 4461 | buffer_info->mapped_as_page = true; |
0be3f55f | 4462 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
03b1320d | 4463 | goto dma_error; |
bc7f75fa AK |
4464 | |
4465 | len -= size; | |
4466 | offset += size; | |
4467 | count++; | |
bc7f75fa AK |
4468 | } |
4469 | } | |
4470 | ||
9ed318d5 TH |
4471 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
4472 | /* multiply data chunks by size of headers */ | |
4473 | bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; | |
4474 | ||
bc7f75fa | 4475 | tx_ring->buffer_info[i].skb = skb; |
9ed318d5 TH |
4476 | tx_ring->buffer_info[i].segs = segs; |
4477 | tx_ring->buffer_info[i].bytecount = bytecount; | |
bc7f75fa AK |
4478 | tx_ring->buffer_info[first].next_to_watch = i; |
4479 | ||
4480 | return count; | |
03b1320d AD |
4481 | |
4482 | dma_error: | |
4483 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
4484 | buffer_info->dma = 0; | |
c1fa347f | 4485 | if (count) |
03b1320d | 4486 | count--; |
c1fa347f RK |
4487 | |
4488 | while (count--) { | |
4489 | if (i==0) | |
03b1320d | 4490 | i += tx_ring->count; |
c1fa347f | 4491 | i--; |
03b1320d AD |
4492 | buffer_info = &tx_ring->buffer_info[i]; |
4493 | e1000_put_txbuf(adapter, buffer_info);; | |
4494 | } | |
4495 | ||
4496 | return 0; | |
bc7f75fa AK |
4497 | } |
4498 | ||
4499 | static void e1000_tx_queue(struct e1000_adapter *adapter, | |
4500 | int tx_flags, int count) | |
4501 | { | |
4502 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
4503 | struct e1000_tx_desc *tx_desc = NULL; | |
4504 | struct e1000_buffer *buffer_info; | |
4505 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
4506 | unsigned int i; | |
4507 | ||
4508 | if (tx_flags & E1000_TX_FLAGS_TSO) { | |
4509 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
4510 | E1000_TXD_CMD_TSE; | |
4511 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
4512 | ||
4513 | if (tx_flags & E1000_TX_FLAGS_IPV4) | |
4514 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; | |
4515 | } | |
4516 | ||
4517 | if (tx_flags & E1000_TX_FLAGS_CSUM) { | |
4518 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
4519 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
4520 | } | |
4521 | ||
4522 | if (tx_flags & E1000_TX_FLAGS_VLAN) { | |
4523 | txd_lower |= E1000_TXD_CMD_VLE; | |
4524 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
4525 | } | |
4526 | ||
4527 | i = tx_ring->next_to_use; | |
4528 | ||
4529 | while (count--) { | |
4530 | buffer_info = &tx_ring->buffer_info[i]; | |
4531 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
4532 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4533 | tx_desc->lower.data = | |
4534 | cpu_to_le32(txd_lower | buffer_info->length); | |
4535 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
4536 | ||
4537 | i++; | |
4538 | if (i == tx_ring->count) | |
4539 | i = 0; | |
4540 | } | |
4541 | ||
4542 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
4543 | ||
ad68076e BA |
4544 | /* |
4545 | * Force memory writes to complete before letting h/w | |
bc7f75fa AK |
4546 | * know there are new descriptors to fetch. (Only |
4547 | * applicable for weak-ordered memory model archs, | |
ad68076e BA |
4548 | * such as IA-64). |
4549 | */ | |
bc7f75fa AK |
4550 | wmb(); |
4551 | ||
4552 | tx_ring->next_to_use = i; | |
4553 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
ad68076e BA |
4554 | /* |
4555 | * we need this if more than one processor can write to our tail | |
4556 | * at a time, it synchronizes IO on IA64/Altix systems | |
4557 | */ | |
bc7f75fa AK |
4558 | mmiowb(); |
4559 | } | |
4560 | ||
4561 | #define MINIMUM_DHCP_PACKET_SIZE 282 | |
4562 | static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, | |
4563 | struct sk_buff *skb) | |
4564 | { | |
4565 | struct e1000_hw *hw = &adapter->hw; | |
4566 | u16 length, offset; | |
4567 | ||
4568 | if (vlan_tx_tag_present(skb)) { | |
8e95a202 JP |
4569 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
4570 | (adapter->hw.mng_cookie.status & | |
bc7f75fa AK |
4571 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) |
4572 | return 0; | |
4573 | } | |
4574 | ||
4575 | if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) | |
4576 | return 0; | |
4577 | ||
4578 | if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) | |
4579 | return 0; | |
4580 | ||
4581 | { | |
4582 | const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); | |
4583 | struct udphdr *udp; | |
4584 | ||
4585 | if (ip->protocol != IPPROTO_UDP) | |
4586 | return 0; | |
4587 | ||
4588 | udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); | |
4589 | if (ntohs(udp->dest) != 67) | |
4590 | return 0; | |
4591 | ||
4592 | offset = (u8 *)udp + 8 - skb->data; | |
4593 | length = skb->len - offset; | |
4594 | return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); | |
4595 | } | |
4596 | ||
4597 | return 0; | |
4598 | } | |
4599 | ||
4600 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) | |
4601 | { | |
4602 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4603 | ||
4604 | netif_stop_queue(netdev); | |
ad68076e BA |
4605 | /* |
4606 | * Herbert's original patch had: | |
bc7f75fa | 4607 | * smp_mb__after_netif_stop_queue(); |
ad68076e BA |
4608 | * but since that doesn't exist yet, just open code it. |
4609 | */ | |
bc7f75fa AK |
4610 | smp_mb(); |
4611 | ||
ad68076e BA |
4612 | /* |
4613 | * We need to check again in a case another CPU has just | |
4614 | * made room available. | |
4615 | */ | |
bc7f75fa AK |
4616 | if (e1000_desc_unused(adapter->tx_ring) < size) |
4617 | return -EBUSY; | |
4618 | ||
4619 | /* A reprieve! */ | |
4620 | netif_start_queue(netdev); | |
4621 | ++adapter->restart_queue; | |
4622 | return 0; | |
4623 | } | |
4624 | ||
4625 | static int e1000_maybe_stop_tx(struct net_device *netdev, int size) | |
4626 | { | |
4627 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4628 | ||
4629 | if (e1000_desc_unused(adapter->tx_ring) >= size) | |
4630 | return 0; | |
4631 | return __e1000_maybe_stop_tx(netdev, size); | |
4632 | } | |
4633 | ||
4634 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) | |
3b29a56d SH |
4635 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
4636 | struct net_device *netdev) | |
bc7f75fa AK |
4637 | { |
4638 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4639 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
4640 | unsigned int first; | |
4641 | unsigned int max_per_txd = E1000_MAX_PER_TXD; | |
4642 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
4643 | unsigned int tx_flags = 0; | |
e743d313 | 4644 | unsigned int len = skb_headlen(skb); |
4e6c709c AK |
4645 | unsigned int nr_frags; |
4646 | unsigned int mss; | |
bc7f75fa AK |
4647 | int count = 0; |
4648 | int tso; | |
4649 | unsigned int f; | |
bc7f75fa AK |
4650 | |
4651 | if (test_bit(__E1000_DOWN, &adapter->state)) { | |
4652 | dev_kfree_skb_any(skb); | |
4653 | return NETDEV_TX_OK; | |
4654 | } | |
4655 | ||
4656 | if (skb->len <= 0) { | |
4657 | dev_kfree_skb_any(skb); | |
4658 | return NETDEV_TX_OK; | |
4659 | } | |
4660 | ||
4661 | mss = skb_shinfo(skb)->gso_size; | |
ad68076e BA |
4662 | /* |
4663 | * The controller does a simple calculation to | |
bc7f75fa AK |
4664 | * make sure there is enough room in the FIFO before |
4665 | * initiating the DMA for each buffer. The calc is: | |
4666 | * 4 = ceil(buffer len/mss). To make sure we don't | |
4667 | * overrun the FIFO, adjust the max buffer len if mss | |
ad68076e BA |
4668 | * drops. |
4669 | */ | |
bc7f75fa AK |
4670 | if (mss) { |
4671 | u8 hdr_len; | |
4672 | max_per_txd = min(mss << 2, max_per_txd); | |
4673 | max_txd_pwr = fls(max_per_txd) - 1; | |
4674 | ||
ad68076e BA |
4675 | /* |
4676 | * TSO Workaround for 82571/2/3 Controllers -- if skb->data | |
4677 | * points to just header, pull a few bytes of payload from | |
4678 | * frags into skb->data | |
4679 | */ | |
bc7f75fa | 4680 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
ad68076e BA |
4681 | /* |
4682 | * we do this workaround for ES2LAN, but it is un-necessary, | |
4683 | * avoiding it could save a lot of cycles | |
4684 | */ | |
4e6c709c | 4685 | if (skb->data_len && (hdr_len == len)) { |
bc7f75fa AK |
4686 | unsigned int pull_size; |
4687 | ||
4688 | pull_size = min((unsigned int)4, skb->data_len); | |
4689 | if (!__pskb_pull_tail(skb, pull_size)) { | |
44defeb3 | 4690 | e_err("__pskb_pull_tail failed.\n"); |
bc7f75fa AK |
4691 | dev_kfree_skb_any(skb); |
4692 | return NETDEV_TX_OK; | |
4693 | } | |
e743d313 | 4694 | len = skb_headlen(skb); |
bc7f75fa AK |
4695 | } |
4696 | } | |
4697 | ||
4698 | /* reserve a descriptor for the offload context */ | |
4699 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) | |
4700 | count++; | |
4701 | count++; | |
4702 | ||
4703 | count += TXD_USE_COUNT(len, max_txd_pwr); | |
4704 | ||
4705 | nr_frags = skb_shinfo(skb)->nr_frags; | |
4706 | for (f = 0; f < nr_frags; f++) | |
4707 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, | |
4708 | max_txd_pwr); | |
4709 | ||
4710 | if (adapter->hw.mac.tx_pkt_filtering) | |
4711 | e1000_transfer_dhcp_info(adapter, skb); | |
4712 | ||
ad68076e BA |
4713 | /* |
4714 | * need: count + 2 desc gap to keep tail from touching | |
4715 | * head, otherwise try next time | |
4716 | */ | |
92af3e95 | 4717 | if (e1000_maybe_stop_tx(netdev, count + 2)) |
bc7f75fa | 4718 | return NETDEV_TX_BUSY; |
bc7f75fa AK |
4719 | |
4720 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
4721 | tx_flags |= E1000_TX_FLAGS_VLAN; | |
4722 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
4723 | } | |
4724 | ||
4725 | first = tx_ring->next_to_use; | |
4726 | ||
4727 | tso = e1000_tso(adapter, skb); | |
4728 | if (tso < 0) { | |
4729 | dev_kfree_skb_any(skb); | |
bc7f75fa AK |
4730 | return NETDEV_TX_OK; |
4731 | } | |
4732 | ||
4733 | if (tso) | |
4734 | tx_flags |= E1000_TX_FLAGS_TSO; | |
4735 | else if (e1000_tx_csum(adapter, skb)) | |
4736 | tx_flags |= E1000_TX_FLAGS_CSUM; | |
4737 | ||
ad68076e BA |
4738 | /* |
4739 | * Old method was to assume IPv4 packet by default if TSO was enabled. | |
bc7f75fa | 4740 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
ad68076e BA |
4741 | * no longer assume, we must. |
4742 | */ | |
bc7f75fa AK |
4743 | if (skb->protocol == htons(ETH_P_IP)) |
4744 | tx_flags |= E1000_TX_FLAGS_IPV4; | |
4745 | ||
1b7719c4 | 4746 | /* if count is 0 then mapping error has occured */ |
bc7f75fa | 4747 | count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss); |
1b7719c4 AD |
4748 | if (count) { |
4749 | e1000_tx_queue(adapter, tx_flags, count); | |
1b7719c4 AD |
4750 | /* Make sure there is space in the ring for the next send. */ |
4751 | e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2); | |
4752 | ||
4753 | } else { | |
bc7f75fa | 4754 | dev_kfree_skb_any(skb); |
1b7719c4 AD |
4755 | tx_ring->buffer_info[first].time_stamp = 0; |
4756 | tx_ring->next_to_use = first; | |
bc7f75fa AK |
4757 | } |
4758 | ||
bc7f75fa AK |
4759 | return NETDEV_TX_OK; |
4760 | } | |
4761 | ||
4762 | /** | |
4763 | * e1000_tx_timeout - Respond to a Tx Hang | |
4764 | * @netdev: network interface device structure | |
4765 | **/ | |
4766 | static void e1000_tx_timeout(struct net_device *netdev) | |
4767 | { | |
4768 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4769 | ||
4770 | /* Do the reset outside of interrupt context */ | |
4771 | adapter->tx_timeout_count++; | |
4772 | schedule_work(&adapter->reset_task); | |
4773 | } | |
4774 | ||
4775 | static void e1000_reset_task(struct work_struct *work) | |
4776 | { | |
4777 | struct e1000_adapter *adapter; | |
4778 | adapter = container_of(work, struct e1000_adapter, reset_task); | |
4779 | ||
84f4ee90 TI |
4780 | e1000e_dump(adapter); |
4781 | e_err("Reset adapter\n"); | |
bc7f75fa AK |
4782 | e1000e_reinit_locked(adapter); |
4783 | } | |
4784 | ||
4785 | /** | |
4786 | * e1000_get_stats - Get System Network Statistics | |
4787 | * @netdev: network interface device structure | |
4788 | * | |
4789 | * Returns the address of the device statistics structure. | |
4790 | * The statistics are actually updated from the timer callback. | |
4791 | **/ | |
4792 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) | |
4793 | { | |
bc7f75fa | 4794 | /* only return the current stats */ |
7274c20f | 4795 | return &netdev->stats; |
bc7f75fa AK |
4796 | } |
4797 | ||
4798 | /** | |
4799 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
4800 | * @netdev: network interface device structure | |
4801 | * @new_mtu: new value for maximum frame size | |
4802 | * | |
4803 | * Returns 0 on success, negative on failure | |
4804 | **/ | |
4805 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
4806 | { | |
4807 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4808 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
4809 | ||
2adc55c9 BA |
4810 | /* Jumbo frame support */ |
4811 | if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && | |
4812 | !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { | |
4813 | e_err("Jumbo Frames not supported.\n"); | |
bc7f75fa AK |
4814 | return -EINVAL; |
4815 | } | |
4816 | ||
2adc55c9 BA |
4817 | /* Supported frame sizes */ |
4818 | if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || | |
4819 | (max_frame > adapter->max_hw_frame_size)) { | |
4820 | e_err("Unsupported MTU setting\n"); | |
bc7f75fa AK |
4821 | return -EINVAL; |
4822 | } | |
4823 | ||
6f461f6c BA |
4824 | /* 82573 Errata 17 */ |
4825 | if (((adapter->hw.mac.type == e1000_82573) || | |
4826 | (adapter->hw.mac.type == e1000_82574)) && | |
4827 | (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN)) { | |
4828 | adapter->flags2 |= FLAG2_DISABLE_ASPM_L1; | |
4829 | e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L1); | |
4830 | } | |
4831 | ||
bc7f75fa AK |
4832 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
4833 | msleep(1); | |
610c9928 | 4834 | /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
318a94d6 | 4835 | adapter->max_frame_size = max_frame; |
610c9928 BA |
4836 | e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
4837 | netdev->mtu = new_mtu; | |
bc7f75fa AK |
4838 | if (netif_running(netdev)) |
4839 | e1000e_down(adapter); | |
4840 | ||
ad68076e BA |
4841 | /* |
4842 | * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
bc7f75fa AK |
4843 | * means we reserve 2 more, this pushes us to allocate from the next |
4844 | * larger slab size. | |
ad68076e | 4845 | * i.e. RXBUFFER_2048 --> size-4096 slab |
97ac8cae BA |
4846 | * However with the new *_jumbo_rx* routines, jumbo receives will use |
4847 | * fragmented skbs | |
ad68076e | 4848 | */ |
bc7f75fa | 4849 | |
9926146b | 4850 | if (max_frame <= 2048) |
bc7f75fa AK |
4851 | adapter->rx_buffer_len = 2048; |
4852 | else | |
4853 | adapter->rx_buffer_len = 4096; | |
4854 | ||
4855 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
4856 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
4857 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) | |
4858 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN | |
ad68076e | 4859 | + ETH_FCS_LEN; |
bc7f75fa | 4860 | |
bc7f75fa AK |
4861 | if (netif_running(netdev)) |
4862 | e1000e_up(adapter); | |
4863 | else | |
4864 | e1000e_reset(adapter); | |
4865 | ||
4866 | clear_bit(__E1000_RESETTING, &adapter->state); | |
4867 | ||
4868 | return 0; | |
4869 | } | |
4870 | ||
4871 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
4872 | int cmd) | |
4873 | { | |
4874 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4875 | struct mii_ioctl_data *data = if_mii(ifr); | |
bc7f75fa | 4876 | |
318a94d6 | 4877 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
bc7f75fa AK |
4878 | return -EOPNOTSUPP; |
4879 | ||
4880 | switch (cmd) { | |
4881 | case SIOCGMIIPHY: | |
4882 | data->phy_id = adapter->hw.phy.addr; | |
4883 | break; | |
4884 | case SIOCGMIIREG: | |
b16a002e BA |
4885 | e1000_phy_read_status(adapter); |
4886 | ||
7c25769f BA |
4887 | switch (data->reg_num & 0x1F) { |
4888 | case MII_BMCR: | |
4889 | data->val_out = adapter->phy_regs.bmcr; | |
4890 | break; | |
4891 | case MII_BMSR: | |
4892 | data->val_out = adapter->phy_regs.bmsr; | |
4893 | break; | |
4894 | case MII_PHYSID1: | |
4895 | data->val_out = (adapter->hw.phy.id >> 16); | |
4896 | break; | |
4897 | case MII_PHYSID2: | |
4898 | data->val_out = (adapter->hw.phy.id & 0xFFFF); | |
4899 | break; | |
4900 | case MII_ADVERTISE: | |
4901 | data->val_out = adapter->phy_regs.advertise; | |
4902 | break; | |
4903 | case MII_LPA: | |
4904 | data->val_out = adapter->phy_regs.lpa; | |
4905 | break; | |
4906 | case MII_EXPANSION: | |
4907 | data->val_out = adapter->phy_regs.expansion; | |
4908 | break; | |
4909 | case MII_CTRL1000: | |
4910 | data->val_out = adapter->phy_regs.ctrl1000; | |
4911 | break; | |
4912 | case MII_STAT1000: | |
4913 | data->val_out = adapter->phy_regs.stat1000; | |
4914 | break; | |
4915 | case MII_ESTATUS: | |
4916 | data->val_out = adapter->phy_regs.estatus; | |
4917 | break; | |
4918 | default: | |
bc7f75fa AK |
4919 | return -EIO; |
4920 | } | |
bc7f75fa AK |
4921 | break; |
4922 | case SIOCSMIIREG: | |
4923 | default: | |
4924 | return -EOPNOTSUPP; | |
4925 | } | |
4926 | return 0; | |
4927 | } | |
4928 | ||
4929 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4930 | { | |
4931 | switch (cmd) { | |
4932 | case SIOCGMIIPHY: | |
4933 | case SIOCGMIIREG: | |
4934 | case SIOCSMIIREG: | |
4935 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4936 | default: | |
4937 | return -EOPNOTSUPP; | |
4938 | } | |
4939 | } | |
4940 | ||
a4f58f54 BA |
4941 | static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
4942 | { | |
4943 | struct e1000_hw *hw = &adapter->hw; | |
4944 | u32 i, mac_reg; | |
4945 | u16 phy_reg; | |
4946 | int retval = 0; | |
4947 | ||
4948 | /* copy MAC RARs to PHY RARs */ | |
d3738bb8 | 4949 | e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
a4f58f54 BA |
4950 | |
4951 | /* copy MAC MTA to PHY MTA */ | |
4952 | for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { | |
4953 | mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); | |
4954 | e1e_wphy(hw, BM_MTA(i), (u16)(mac_reg & 0xFFFF)); | |
4955 | e1e_wphy(hw, BM_MTA(i) + 1, (u16)((mac_reg >> 16) & 0xFFFF)); | |
4956 | } | |
4957 | ||
4958 | /* configure PHY Rx Control register */ | |
4959 | e1e_rphy(&adapter->hw, BM_RCTL, &phy_reg); | |
4960 | mac_reg = er32(RCTL); | |
4961 | if (mac_reg & E1000_RCTL_UPE) | |
4962 | phy_reg |= BM_RCTL_UPE; | |
4963 | if (mac_reg & E1000_RCTL_MPE) | |
4964 | phy_reg |= BM_RCTL_MPE; | |
4965 | phy_reg &= ~(BM_RCTL_MO_MASK); | |
4966 | if (mac_reg & E1000_RCTL_MO_3) | |
4967 | phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) | |
4968 | << BM_RCTL_MO_SHIFT); | |
4969 | if (mac_reg & E1000_RCTL_BAM) | |
4970 | phy_reg |= BM_RCTL_BAM; | |
4971 | if (mac_reg & E1000_RCTL_PMCF) | |
4972 | phy_reg |= BM_RCTL_PMCF; | |
4973 | mac_reg = er32(CTRL); | |
4974 | if (mac_reg & E1000_CTRL_RFCE) | |
4975 | phy_reg |= BM_RCTL_RFCE; | |
4976 | e1e_wphy(&adapter->hw, BM_RCTL, phy_reg); | |
4977 | ||
4978 | /* enable PHY wakeup in MAC register */ | |
4979 | ew32(WUFC, wufc); | |
4980 | ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); | |
4981 | ||
4982 | /* configure and enable PHY wakeup in PHY registers */ | |
4983 | e1e_wphy(&adapter->hw, BM_WUFC, wufc); | |
4984 | e1e_wphy(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); | |
4985 | ||
4986 | /* activate PHY wakeup */ | |
94d8186a | 4987 | retval = hw->phy.ops.acquire(hw); |
a4f58f54 BA |
4988 | if (retval) { |
4989 | e_err("Could not acquire PHY\n"); | |
4990 | return retval; | |
4991 | } | |
4992 | e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, | |
4993 | (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT)); | |
4994 | retval = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg); | |
4995 | if (retval) { | |
4996 | e_err("Could not read PHY page 769\n"); | |
4997 | goto out; | |
4998 | } | |
4999 | phy_reg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; | |
5000 | retval = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg); | |
5001 | if (retval) | |
5002 | e_err("Could not set PHY Host Wakeup bit\n"); | |
5003 | out: | |
94d8186a | 5004 | hw->phy.ops.release(hw); |
a4f58f54 BA |
5005 | |
5006 | return retval; | |
5007 | } | |
5008 | ||
23606cf5 RW |
5009 | static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, |
5010 | bool runtime) | |
bc7f75fa AK |
5011 | { |
5012 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5013 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5014 | struct e1000_hw *hw = &adapter->hw; | |
5015 | u32 ctrl, ctrl_ext, rctl, status; | |
23606cf5 RW |
5016 | /* Runtime suspend should only enable wakeup for link changes */ |
5017 | u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; | |
bc7f75fa AK |
5018 | int retval = 0; |
5019 | ||
5020 | netif_device_detach(netdev); | |
5021 | ||
5022 | if (netif_running(netdev)) { | |
5023 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
5024 | e1000e_down(adapter); | |
5025 | e1000_free_irq(adapter); | |
5026 | } | |
4662e82b | 5027 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa AK |
5028 | |
5029 | retval = pci_save_state(pdev); | |
5030 | if (retval) | |
5031 | return retval; | |
5032 | ||
5033 | status = er32(STATUS); | |
5034 | if (status & E1000_STATUS_LU) | |
5035 | wufc &= ~E1000_WUFC_LNKC; | |
5036 | ||
5037 | if (wufc) { | |
5038 | e1000_setup_rctl(adapter); | |
5039 | e1000_set_multi(netdev); | |
5040 | ||
5041 | /* turn on all-multi mode if wake on multicast is enabled */ | |
5042 | if (wufc & E1000_WUFC_MC) { | |
5043 | rctl = er32(RCTL); | |
5044 | rctl |= E1000_RCTL_MPE; | |
5045 | ew32(RCTL, rctl); | |
5046 | } | |
5047 | ||
5048 | ctrl = er32(CTRL); | |
5049 | /* advertise wake from D3Cold */ | |
5050 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
5051 | /* phy power management enable */ | |
5052 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
a4f58f54 BA |
5053 | ctrl |= E1000_CTRL_ADVD3WUC; |
5054 | if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) | |
5055 | ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; | |
bc7f75fa AK |
5056 | ew32(CTRL, ctrl); |
5057 | ||
318a94d6 JK |
5058 | if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
5059 | adapter->hw.phy.media_type == | |
5060 | e1000_media_type_internal_serdes) { | |
bc7f75fa AK |
5061 | /* keep the laser running in D3 */ |
5062 | ctrl_ext = er32(CTRL_EXT); | |
93a23f48 | 5063 | ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
bc7f75fa AK |
5064 | ew32(CTRL_EXT, ctrl_ext); |
5065 | } | |
5066 | ||
97ac8cae BA |
5067 | if (adapter->flags & FLAG_IS_ICH) |
5068 | e1000e_disable_gig_wol_ich8lan(&adapter->hw); | |
5069 | ||
bc7f75fa AK |
5070 | /* Allow time for pending master requests to run */ |
5071 | e1000e_disable_pcie_master(&adapter->hw); | |
5072 | ||
82776a4b | 5073 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
a4f58f54 BA |
5074 | /* enable wakeup by the PHY */ |
5075 | retval = e1000_init_phy_wakeup(adapter, wufc); | |
5076 | if (retval) | |
5077 | return retval; | |
5078 | } else { | |
5079 | /* enable wakeup by the MAC */ | |
5080 | ew32(WUFC, wufc); | |
5081 | ew32(WUC, E1000_WUC_PME_EN); | |
5082 | } | |
bc7f75fa AK |
5083 | } else { |
5084 | ew32(WUC, 0); | |
5085 | ew32(WUFC, 0); | |
bc7f75fa AK |
5086 | } |
5087 | ||
4f9de721 RW |
5088 | *enable_wake = !!wufc; |
5089 | ||
bc7f75fa | 5090 | /* make sure adapter isn't asleep if manageability is enabled */ |
82776a4b BA |
5091 | if ((adapter->flags & FLAG_MNG_PT_ENABLED) || |
5092 | (hw->mac.ops.check_mng_mode(hw))) | |
4f9de721 | 5093 | *enable_wake = true; |
bc7f75fa AK |
5094 | |
5095 | if (adapter->hw.phy.type == e1000_phy_igp_3) | |
5096 | e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); | |
5097 | ||
ad68076e BA |
5098 | /* |
5099 | * Release control of h/w to f/w. If f/w is AMT enabled, this | |
5100 | * would have already happened in close and is redundant. | |
5101 | */ | |
bc7f75fa AK |
5102 | e1000_release_hw_control(adapter); |
5103 | ||
5104 | pci_disable_device(pdev); | |
5105 | ||
4f9de721 RW |
5106 | return 0; |
5107 | } | |
5108 | ||
5109 | static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake) | |
5110 | { | |
5111 | if (sleep && wake) { | |
5112 | pci_prepare_to_sleep(pdev); | |
5113 | return; | |
5114 | } | |
5115 | ||
5116 | pci_wake_from_d3(pdev, wake); | |
5117 | pci_set_power_state(pdev, PCI_D3hot); | |
5118 | } | |
5119 | ||
5120 | static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep, | |
5121 | bool wake) | |
5122 | { | |
5123 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5124 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5125 | ||
005cbdfc AD |
5126 | /* |
5127 | * The pci-e switch on some quad port adapters will report a | |
5128 | * correctable error when the MAC transitions from D0 to D3. To | |
5129 | * prevent this we need to mask off the correctable errors on the | |
5130 | * downstream port of the pci-e switch. | |
5131 | */ | |
5132 | if (adapter->flags & FLAG_IS_QUAD_PORT) { | |
5133 | struct pci_dev *us_dev = pdev->bus->self; | |
5134 | int pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP); | |
5135 | u16 devctl; | |
5136 | ||
5137 | pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl); | |
5138 | pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, | |
5139 | (devctl & ~PCI_EXP_DEVCTL_CERE)); | |
5140 | ||
4f9de721 | 5141 | e1000_power_off(pdev, sleep, wake); |
005cbdfc AD |
5142 | |
5143 | pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl); | |
5144 | } else { | |
4f9de721 | 5145 | e1000_power_off(pdev, sleep, wake); |
005cbdfc | 5146 | } |
bc7f75fa AK |
5147 | } |
5148 | ||
6f461f6c BA |
5149 | #ifdef CONFIG_PCIEASPM |
5150 | static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) | |
5151 | { | |
5152 | pci_disable_link_state(pdev, state); | |
5153 | } | |
5154 | #else | |
5155 | static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) | |
1eae4eb2 AK |
5156 | { |
5157 | int pos; | |
6f461f6c | 5158 | u16 reg16; |
1eae4eb2 AK |
5159 | |
5160 | /* | |
6f461f6c BA |
5161 | * Both device and parent should have the same ASPM setting. |
5162 | * Disable ASPM in downstream component first and then upstream. | |
1eae4eb2 | 5163 | */ |
6f461f6c BA |
5164 | pos = pci_pcie_cap(pdev); |
5165 | pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16); | |
5166 | reg16 &= ~state; | |
5167 | pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16); | |
5168 | ||
0c75ba22 AB |
5169 | if (!pdev->bus->self) |
5170 | return; | |
5171 | ||
6f461f6c BA |
5172 | pos = pci_pcie_cap(pdev->bus->self); |
5173 | pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16); | |
5174 | reg16 &= ~state; | |
5175 | pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16); | |
5176 | } | |
5177 | #endif | |
5178 | void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) | |
5179 | { | |
5180 | dev_info(&pdev->dev, "Disabling ASPM %s %s\n", | |
5181 | (state & PCIE_LINK_STATE_L0S) ? "L0s" : "", | |
5182 | (state & PCIE_LINK_STATE_L1) ? "L1" : ""); | |
5183 | ||
5184 | __e1000e_disable_aspm(pdev, state); | |
1eae4eb2 AK |
5185 | } |
5186 | ||
a0340162 | 5187 | #ifdef CONFIG_PM_OPS |
23606cf5 | 5188 | static bool e1000e_pm_ready(struct e1000_adapter *adapter) |
4f9de721 | 5189 | { |
23606cf5 | 5190 | return !!adapter->tx_ring->buffer_info; |
4f9de721 RW |
5191 | } |
5192 | ||
23606cf5 | 5193 | static int __e1000_resume(struct pci_dev *pdev) |
bc7f75fa AK |
5194 | { |
5195 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5196 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5197 | struct e1000_hw *hw = &adapter->hw; | |
5198 | u32 err; | |
5199 | ||
5200 | pci_set_power_state(pdev, PCI_D0); | |
5201 | pci_restore_state(pdev); | |
28b8f04a | 5202 | pci_save_state(pdev); |
6f461f6c BA |
5203 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
5204 | e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1); | |
6e4f6f6b | 5205 | |
4662e82b | 5206 | e1000e_set_interrupt_capability(adapter); |
bc7f75fa AK |
5207 | if (netif_running(netdev)) { |
5208 | err = e1000_request_irq(adapter); | |
5209 | if (err) | |
5210 | return err; | |
5211 | } | |
5212 | ||
5213 | e1000e_power_up_phy(adapter); | |
a4f58f54 BA |
5214 | |
5215 | /* report the system wakeup cause from S3/S4 */ | |
5216 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { | |
5217 | u16 phy_data; | |
5218 | ||
5219 | e1e_rphy(&adapter->hw, BM_WUS, &phy_data); | |
5220 | if (phy_data) { | |
5221 | e_info("PHY Wakeup cause - %s\n", | |
5222 | phy_data & E1000_WUS_EX ? "Unicast Packet" : | |
5223 | phy_data & E1000_WUS_MC ? "Multicast Packet" : | |
5224 | phy_data & E1000_WUS_BC ? "Broadcast Packet" : | |
5225 | phy_data & E1000_WUS_MAG ? "Magic Packet" : | |
5226 | phy_data & E1000_WUS_LNKC ? "Link Status " | |
5227 | " Change" : "other"); | |
5228 | } | |
5229 | e1e_wphy(&adapter->hw, BM_WUS, ~0); | |
5230 | } else { | |
5231 | u32 wus = er32(WUS); | |
5232 | if (wus) { | |
5233 | e_info("MAC Wakeup cause - %s\n", | |
5234 | wus & E1000_WUS_EX ? "Unicast Packet" : | |
5235 | wus & E1000_WUS_MC ? "Multicast Packet" : | |
5236 | wus & E1000_WUS_BC ? "Broadcast Packet" : | |
5237 | wus & E1000_WUS_MAG ? "Magic Packet" : | |
5238 | wus & E1000_WUS_LNKC ? "Link Status Change" : | |
5239 | "other"); | |
5240 | } | |
5241 | ew32(WUS, ~0); | |
5242 | } | |
5243 | ||
bc7f75fa | 5244 | e1000e_reset(adapter); |
bc7f75fa | 5245 | |
cd791618 | 5246 | e1000_init_manageability_pt(adapter); |
bc7f75fa AK |
5247 | |
5248 | if (netif_running(netdev)) | |
5249 | e1000e_up(adapter); | |
5250 | ||
5251 | netif_device_attach(netdev); | |
5252 | ||
ad68076e BA |
5253 | /* |
5254 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 5255 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
5256 | * under the control of the driver. |
5257 | */ | |
c43bc57e | 5258 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
5259 | e1000_get_hw_control(adapter); |
5260 | ||
5261 | return 0; | |
5262 | } | |
23606cf5 | 5263 | |
a0340162 RW |
5264 | #ifdef CONFIG_PM_SLEEP |
5265 | static int e1000_suspend(struct device *dev) | |
5266 | { | |
5267 | struct pci_dev *pdev = to_pci_dev(dev); | |
5268 | int retval; | |
5269 | bool wake; | |
5270 | ||
5271 | retval = __e1000_shutdown(pdev, &wake, false); | |
5272 | if (!retval) | |
5273 | e1000_complete_shutdown(pdev, true, wake); | |
5274 | ||
5275 | return retval; | |
5276 | } | |
5277 | ||
23606cf5 RW |
5278 | static int e1000_resume(struct device *dev) |
5279 | { | |
5280 | struct pci_dev *pdev = to_pci_dev(dev); | |
5281 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5282 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5283 | ||
5284 | if (e1000e_pm_ready(adapter)) | |
5285 | adapter->idle_check = true; | |
5286 | ||
5287 | return __e1000_resume(pdev); | |
5288 | } | |
a0340162 RW |
5289 | #endif /* CONFIG_PM_SLEEP */ |
5290 | ||
5291 | #ifdef CONFIG_PM_RUNTIME | |
5292 | static int e1000_runtime_suspend(struct device *dev) | |
5293 | { | |
5294 | struct pci_dev *pdev = to_pci_dev(dev); | |
5295 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5296 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5297 | ||
5298 | if (e1000e_pm_ready(adapter)) { | |
5299 | bool wake; | |
5300 | ||
5301 | __e1000_shutdown(pdev, &wake, true); | |
5302 | } | |
5303 | ||
5304 | return 0; | |
5305 | } | |
5306 | ||
5307 | static int e1000_idle(struct device *dev) | |
5308 | { | |
5309 | struct pci_dev *pdev = to_pci_dev(dev); | |
5310 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5311 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5312 | ||
5313 | if (!e1000e_pm_ready(adapter)) | |
5314 | return 0; | |
5315 | ||
5316 | if (adapter->idle_check) { | |
5317 | adapter->idle_check = false; | |
5318 | if (!e1000e_has_link(adapter)) | |
5319 | pm_schedule_suspend(dev, MSEC_PER_SEC); | |
5320 | } | |
5321 | ||
5322 | return -EBUSY; | |
5323 | } | |
23606cf5 RW |
5324 | |
5325 | static int e1000_runtime_resume(struct device *dev) | |
5326 | { | |
5327 | struct pci_dev *pdev = to_pci_dev(dev); | |
5328 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5329 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5330 | ||
5331 | if (!e1000e_pm_ready(adapter)) | |
5332 | return 0; | |
5333 | ||
5334 | adapter->idle_check = !dev->power.runtime_auto; | |
5335 | return __e1000_resume(pdev); | |
5336 | } | |
a0340162 RW |
5337 | #endif /* CONFIG_PM_RUNTIME */ |
5338 | #endif /* CONFIG_PM_OPS */ | |
bc7f75fa AK |
5339 | |
5340 | static void e1000_shutdown(struct pci_dev *pdev) | |
5341 | { | |
4f9de721 RW |
5342 | bool wake = false; |
5343 | ||
23606cf5 | 5344 | __e1000_shutdown(pdev, &wake, false); |
4f9de721 RW |
5345 | |
5346 | if (system_state == SYSTEM_POWER_OFF) | |
5347 | e1000_complete_shutdown(pdev, false, wake); | |
bc7f75fa AK |
5348 | } |
5349 | ||
5350 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
5351 | /* | |
5352 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
5353 | * without having to re-enable interrupts. It's not called while | |
5354 | * the interrupt routine is executing. | |
5355 | */ | |
5356 | static void e1000_netpoll(struct net_device *netdev) | |
5357 | { | |
5358 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5359 | ||
5360 | disable_irq(adapter->pdev->irq); | |
5361 | e1000_intr(adapter->pdev->irq, netdev); | |
5362 | ||
bc7f75fa AK |
5363 | enable_irq(adapter->pdev->irq); |
5364 | } | |
5365 | #endif | |
5366 | ||
5367 | /** | |
5368 | * e1000_io_error_detected - called when PCI error is detected | |
5369 | * @pdev: Pointer to PCI device | |
5370 | * @state: The current pci connection state | |
5371 | * | |
5372 | * This function is called after a PCI bus error affecting | |
5373 | * this device has been detected. | |
5374 | */ | |
5375 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, | |
5376 | pci_channel_state_t state) | |
5377 | { | |
5378 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5379 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5380 | ||
5381 | netif_device_detach(netdev); | |
5382 | ||
c93b5a76 MM |
5383 | if (state == pci_channel_io_perm_failure) |
5384 | return PCI_ERS_RESULT_DISCONNECT; | |
5385 | ||
bc7f75fa AK |
5386 | if (netif_running(netdev)) |
5387 | e1000e_down(adapter); | |
5388 | pci_disable_device(pdev); | |
5389 | ||
5390 | /* Request a slot slot reset. */ | |
5391 | return PCI_ERS_RESULT_NEED_RESET; | |
5392 | } | |
5393 | ||
5394 | /** | |
5395 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
5396 | * @pdev: Pointer to PCI device | |
5397 | * | |
5398 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
5399 | * resembles the first-half of the e1000_resume routine. | |
5400 | */ | |
5401 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
5402 | { | |
5403 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5404 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5405 | struct e1000_hw *hw = &adapter->hw; | |
6e4f6f6b | 5406 | int err; |
111b9dc5 | 5407 | pci_ers_result_t result; |
bc7f75fa | 5408 | |
6f461f6c BA |
5409 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
5410 | e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1); | |
f0f422e5 | 5411 | err = pci_enable_device_mem(pdev); |
6e4f6f6b | 5412 | if (err) { |
bc7f75fa AK |
5413 | dev_err(&pdev->dev, |
5414 | "Cannot re-enable PCI device after reset.\n"); | |
111b9dc5 JB |
5415 | result = PCI_ERS_RESULT_DISCONNECT; |
5416 | } else { | |
5417 | pci_set_master(pdev); | |
23606cf5 | 5418 | pdev->state_saved = true; |
111b9dc5 | 5419 | pci_restore_state(pdev); |
bc7f75fa | 5420 | |
111b9dc5 JB |
5421 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5422 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
bc7f75fa | 5423 | |
111b9dc5 JB |
5424 | e1000e_reset(adapter); |
5425 | ew32(WUS, ~0); | |
5426 | result = PCI_ERS_RESULT_RECOVERED; | |
5427 | } | |
bc7f75fa | 5428 | |
111b9dc5 JB |
5429 | pci_cleanup_aer_uncorrect_error_status(pdev); |
5430 | ||
5431 | return result; | |
bc7f75fa AK |
5432 | } |
5433 | ||
5434 | /** | |
5435 | * e1000_io_resume - called when traffic can start flowing again. | |
5436 | * @pdev: Pointer to PCI device | |
5437 | * | |
5438 | * This callback is called when the error recovery driver tells us that | |
5439 | * its OK to resume normal operation. Implementation resembles the | |
5440 | * second-half of the e1000_resume routine. | |
5441 | */ | |
5442 | static void e1000_io_resume(struct pci_dev *pdev) | |
5443 | { | |
5444 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5445 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5446 | ||
cd791618 | 5447 | e1000_init_manageability_pt(adapter); |
bc7f75fa AK |
5448 | |
5449 | if (netif_running(netdev)) { | |
5450 | if (e1000e_up(adapter)) { | |
5451 | dev_err(&pdev->dev, | |
5452 | "can't bring device back up after reset\n"); | |
5453 | return; | |
5454 | } | |
5455 | } | |
5456 | ||
5457 | netif_device_attach(netdev); | |
5458 | ||
ad68076e BA |
5459 | /* |
5460 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 5461 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
5462 | * under the control of the driver. |
5463 | */ | |
c43bc57e | 5464 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
5465 | e1000_get_hw_control(adapter); |
5466 | ||
5467 | } | |
5468 | ||
5469 | static void e1000_print_device_info(struct e1000_adapter *adapter) | |
5470 | { | |
5471 | struct e1000_hw *hw = &adapter->hw; | |
5472 | struct net_device *netdev = adapter->netdev; | |
69e3fd8c | 5473 | u32 pba_num; |
bc7f75fa AK |
5474 | |
5475 | /* print bus type/speed/width info */ | |
7c510e4b | 5476 | e_info("(PCI Express:2.5GB/s:%s) %pM\n", |
44defeb3 JK |
5477 | /* bus width */ |
5478 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : | |
5479 | "Width x1"), | |
5480 | /* MAC address */ | |
7c510e4b | 5481 | netdev->dev_addr); |
44defeb3 JK |
5482 | e_info("Intel(R) PRO/%s Network Connection\n", |
5483 | (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); | |
69e3fd8c | 5484 | e1000e_read_pba_num(hw, &pba_num); |
44defeb3 JK |
5485 | e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n", |
5486 | hw->mac.type, hw->phy.type, (pba_num >> 8), (pba_num & 0xff)); | |
bc7f75fa AK |
5487 | } |
5488 | ||
10aa4c04 AK |
5489 | static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
5490 | { | |
5491 | struct e1000_hw *hw = &adapter->hw; | |
5492 | int ret_val; | |
5493 | u16 buf = 0; | |
5494 | ||
5495 | if (hw->mac.type != e1000_82573) | |
5496 | return; | |
5497 | ||
5498 | ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); | |
e243455d | 5499 | if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) { |
10aa4c04 | 5500 | /* Deep Smart Power Down (DSPD) */ |
6c2a9efa FP |
5501 | dev_warn(&adapter->pdev->dev, |
5502 | "Warning: detected DSPD enabled in EEPROM\n"); | |
10aa4c04 | 5503 | } |
10aa4c04 AK |
5504 | } |
5505 | ||
651c2466 SH |
5506 | static const struct net_device_ops e1000e_netdev_ops = { |
5507 | .ndo_open = e1000_open, | |
5508 | .ndo_stop = e1000_close, | |
00829823 | 5509 | .ndo_start_xmit = e1000_xmit_frame, |
651c2466 SH |
5510 | .ndo_get_stats = e1000_get_stats, |
5511 | .ndo_set_multicast_list = e1000_set_multi, | |
5512 | .ndo_set_mac_address = e1000_set_mac, | |
5513 | .ndo_change_mtu = e1000_change_mtu, | |
5514 | .ndo_do_ioctl = e1000_ioctl, | |
5515 | .ndo_tx_timeout = e1000_tx_timeout, | |
5516 | .ndo_validate_addr = eth_validate_addr, | |
5517 | ||
5518 | .ndo_vlan_rx_register = e1000_vlan_rx_register, | |
5519 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, | |
5520 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
5521 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
5522 | .ndo_poll_controller = e1000_netpoll, | |
5523 | #endif | |
5524 | }; | |
5525 | ||
bc7f75fa AK |
5526 | /** |
5527 | * e1000_probe - Device Initialization Routine | |
5528 | * @pdev: PCI device information struct | |
5529 | * @ent: entry in e1000_pci_tbl | |
5530 | * | |
5531 | * Returns 0 on success, negative on failure | |
5532 | * | |
5533 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
5534 | * The OS initialization, configuring of the adapter private structure, | |
5535 | * and a hardware reset occur. | |
5536 | **/ | |
5537 | static int __devinit e1000_probe(struct pci_dev *pdev, | |
5538 | const struct pci_device_id *ent) | |
5539 | { | |
5540 | struct net_device *netdev; | |
5541 | struct e1000_adapter *adapter; | |
5542 | struct e1000_hw *hw; | |
5543 | const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; | |
f47e81fc BB |
5544 | resource_size_t mmio_start, mmio_len; |
5545 | resource_size_t flash_start, flash_len; | |
bc7f75fa AK |
5546 | |
5547 | static int cards_found; | |
5548 | int i, err, pci_using_dac; | |
5549 | u16 eeprom_data = 0; | |
5550 | u16 eeprom_apme_mask = E1000_EEPROM_APME; | |
5551 | ||
6f461f6c BA |
5552 | if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
5553 | e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1); | |
6e4f6f6b | 5554 | |
f0f422e5 | 5555 | err = pci_enable_device_mem(pdev); |
bc7f75fa AK |
5556 | if (err) |
5557 | return err; | |
5558 | ||
5559 | pci_using_dac = 0; | |
0be3f55f | 5560 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
bc7f75fa | 5561 | if (!err) { |
0be3f55f | 5562 | err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
bc7f75fa AK |
5563 | if (!err) |
5564 | pci_using_dac = 1; | |
5565 | } else { | |
0be3f55f | 5566 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
bc7f75fa | 5567 | if (err) { |
0be3f55f NN |
5568 | err = dma_set_coherent_mask(&pdev->dev, |
5569 | DMA_BIT_MASK(32)); | |
bc7f75fa AK |
5570 | if (err) { |
5571 | dev_err(&pdev->dev, "No usable DMA " | |
5572 | "configuration, aborting\n"); | |
5573 | goto err_dma; | |
5574 | } | |
5575 | } | |
5576 | } | |
5577 | ||
e8de1481 | 5578 | err = pci_request_selected_regions_exclusive(pdev, |
f0f422e5 BA |
5579 | pci_select_bars(pdev, IORESOURCE_MEM), |
5580 | e1000e_driver_name); | |
bc7f75fa AK |
5581 | if (err) |
5582 | goto err_pci_reg; | |
5583 | ||
68eac460 | 5584 | /* AER (Advanced Error Reporting) hooks */ |
19d5afd4 | 5585 | pci_enable_pcie_error_reporting(pdev); |
68eac460 | 5586 | |
bc7f75fa | 5587 | pci_set_master(pdev); |
438b365a BA |
5588 | /* PCI config space info */ |
5589 | err = pci_save_state(pdev); | |
5590 | if (err) | |
5591 | goto err_alloc_etherdev; | |
bc7f75fa AK |
5592 | |
5593 | err = -ENOMEM; | |
5594 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
5595 | if (!netdev) | |
5596 | goto err_alloc_etherdev; | |
5597 | ||
bc7f75fa AK |
5598 | SET_NETDEV_DEV(netdev, &pdev->dev); |
5599 | ||
f85e4dfa TH |
5600 | netdev->irq = pdev->irq; |
5601 | ||
bc7f75fa AK |
5602 | pci_set_drvdata(pdev, netdev); |
5603 | adapter = netdev_priv(netdev); | |
5604 | hw = &adapter->hw; | |
5605 | adapter->netdev = netdev; | |
5606 | adapter->pdev = pdev; | |
5607 | adapter->ei = ei; | |
5608 | adapter->pba = ei->pba; | |
5609 | adapter->flags = ei->flags; | |
eb7c3adb | 5610 | adapter->flags2 = ei->flags2; |
bc7f75fa AK |
5611 | adapter->hw.adapter = adapter; |
5612 | adapter->hw.mac.type = ei->mac; | |
2adc55c9 | 5613 | adapter->max_hw_frame_size = ei->max_hw_frame_size; |
bc7f75fa AK |
5614 | adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; |
5615 | ||
5616 | mmio_start = pci_resource_start(pdev, 0); | |
5617 | mmio_len = pci_resource_len(pdev, 0); | |
5618 | ||
5619 | err = -EIO; | |
5620 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
5621 | if (!adapter->hw.hw_addr) | |
5622 | goto err_ioremap; | |
5623 | ||
5624 | if ((adapter->flags & FLAG_HAS_FLASH) && | |
5625 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
5626 | flash_start = pci_resource_start(pdev, 1); | |
5627 | flash_len = pci_resource_len(pdev, 1); | |
5628 | adapter->hw.flash_address = ioremap(flash_start, flash_len); | |
5629 | if (!adapter->hw.flash_address) | |
5630 | goto err_flashmap; | |
5631 | } | |
5632 | ||
5633 | /* construct the net_device struct */ | |
651c2466 | 5634 | netdev->netdev_ops = &e1000e_netdev_ops; |
bc7f75fa | 5635 | e1000e_set_ethtool_ops(netdev); |
bc7f75fa AK |
5636 | netdev->watchdog_timeo = 5 * HZ; |
5637 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); | |
bc7f75fa AK |
5638 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
5639 | ||
5640 | netdev->mem_start = mmio_start; | |
5641 | netdev->mem_end = mmio_start + mmio_len; | |
5642 | ||
5643 | adapter->bd_number = cards_found++; | |
5644 | ||
4662e82b BA |
5645 | e1000e_check_options(adapter); |
5646 | ||
bc7f75fa AK |
5647 | /* setup adapter struct */ |
5648 | err = e1000_sw_init(adapter); | |
5649 | if (err) | |
5650 | goto err_sw_init; | |
5651 | ||
bc7f75fa AK |
5652 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
5653 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
5654 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
5655 | ||
69e3fd8c | 5656 | err = ei->get_variants(adapter); |
bc7f75fa AK |
5657 | if (err) |
5658 | goto err_hw_init; | |
5659 | ||
4a770358 BA |
5660 | if ((adapter->flags & FLAG_IS_ICH) && |
5661 | (adapter->flags & FLAG_READ_ONLY_NVM)) | |
5662 | e1000e_write_protect_nvm_ich8lan(&adapter->hw); | |
5663 | ||
bc7f75fa AK |
5664 | hw->mac.ops.get_bus_info(&adapter->hw); |
5665 | ||
318a94d6 | 5666 | adapter->hw.phy.autoneg_wait_to_complete = 0; |
bc7f75fa AK |
5667 | |
5668 | /* Copper options */ | |
318a94d6 | 5669 | if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
bc7f75fa AK |
5670 | adapter->hw.phy.mdix = AUTO_ALL_MODES; |
5671 | adapter->hw.phy.disable_polarity_correction = 0; | |
5672 | adapter->hw.phy.ms_type = e1000_ms_hw_default; | |
5673 | } | |
5674 | ||
5675 | if (e1000_check_reset_block(&adapter->hw)) | |
44defeb3 | 5676 | e_info("PHY reset is blocked due to SOL/IDER session.\n"); |
bc7f75fa AK |
5677 | |
5678 | netdev->features = NETIF_F_SG | | |
5679 | NETIF_F_HW_CSUM | | |
5680 | NETIF_F_HW_VLAN_TX | | |
5681 | NETIF_F_HW_VLAN_RX; | |
5682 | ||
5683 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) | |
5684 | netdev->features |= NETIF_F_HW_VLAN_FILTER; | |
5685 | ||
5686 | netdev->features |= NETIF_F_TSO; | |
5687 | netdev->features |= NETIF_F_TSO6; | |
5688 | ||
a5136e23 JK |
5689 | netdev->vlan_features |= NETIF_F_TSO; |
5690 | netdev->vlan_features |= NETIF_F_TSO6; | |
5691 | netdev->vlan_features |= NETIF_F_HW_CSUM; | |
5692 | netdev->vlan_features |= NETIF_F_SG; | |
5693 | ||
bc7f75fa AK |
5694 | if (pci_using_dac) |
5695 | netdev->features |= NETIF_F_HIGHDMA; | |
5696 | ||
bc7f75fa AK |
5697 | if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
5698 | adapter->flags |= FLAG_MNG_PT_ENABLED; | |
5699 | ||
ad68076e BA |
5700 | /* |
5701 | * before reading the NVM, reset the controller to | |
5702 | * put the device in a known good starting state | |
5703 | */ | |
bc7f75fa AK |
5704 | adapter->hw.mac.ops.reset_hw(&adapter->hw); |
5705 | ||
5706 | /* | |
5707 | * systems with ASPM and others may see the checksum fail on the first | |
5708 | * attempt. Let's give it a few tries | |
5709 | */ | |
5710 | for (i = 0;; i++) { | |
5711 | if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) | |
5712 | break; | |
5713 | if (i == 2) { | |
44defeb3 | 5714 | e_err("The NVM Checksum Is Not Valid\n"); |
bc7f75fa AK |
5715 | err = -EIO; |
5716 | goto err_eeprom; | |
5717 | } | |
5718 | } | |
5719 | ||
10aa4c04 AK |
5720 | e1000_eeprom_checks(adapter); |
5721 | ||
608f8a0d | 5722 | /* copy the MAC address */ |
bc7f75fa | 5723 | if (e1000e_read_mac_addr(&adapter->hw)) |
44defeb3 | 5724 | e_err("NVM Read Error while reading MAC address\n"); |
bc7f75fa AK |
5725 | |
5726 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
5727 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); | |
5728 | ||
5729 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
7c510e4b | 5730 | e_err("Invalid MAC Address: %pM\n", netdev->perm_addr); |
bc7f75fa AK |
5731 | err = -EIO; |
5732 | goto err_eeprom; | |
5733 | } | |
5734 | ||
5735 | init_timer(&adapter->watchdog_timer); | |
5736 | adapter->watchdog_timer.function = &e1000_watchdog; | |
5737 | adapter->watchdog_timer.data = (unsigned long) adapter; | |
5738 | ||
5739 | init_timer(&adapter->phy_info_timer); | |
5740 | adapter->phy_info_timer.function = &e1000_update_phy_info; | |
5741 | adapter->phy_info_timer.data = (unsigned long) adapter; | |
5742 | ||
5743 | INIT_WORK(&adapter->reset_task, e1000_reset_task); | |
5744 | INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); | |
a8f88ff5 JB |
5745 | INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
5746 | INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); | |
41cec6f1 | 5747 | INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
bc7f75fa | 5748 | |
bc7f75fa AK |
5749 | /* Initialize link parameters. User can change them with ethtool */ |
5750 | adapter->hw.mac.autoneg = 1; | |
309af40b | 5751 | adapter->fc_autoneg = 1; |
5c48ef3e BA |
5752 | adapter->hw.fc.requested_mode = e1000_fc_default; |
5753 | adapter->hw.fc.current_mode = e1000_fc_default; | |
bc7f75fa AK |
5754 | adapter->hw.phy.autoneg_advertised = 0x2f; |
5755 | ||
5756 | /* ring size defaults */ | |
5757 | adapter->rx_ring->count = 256; | |
5758 | adapter->tx_ring->count = 256; | |
5759 | ||
5760 | /* | |
5761 | * Initial Wake on LAN setting - If APM wake is enabled in | |
5762 | * the EEPROM, enable the ACPI Magic Packet filter | |
5763 | */ | |
5764 | if (adapter->flags & FLAG_APME_IN_WUC) { | |
5765 | /* APME bit in EEPROM is mapped to WUC.APME */ | |
5766 | eeprom_data = er32(WUC); | |
5767 | eeprom_apme_mask = E1000_WUC_APME; | |
a4f58f54 BA |
5768 | if (eeprom_data & E1000_WUC_PHY_WAKE) |
5769 | adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; | |
bc7f75fa AK |
5770 | } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
5771 | if (adapter->flags & FLAG_APME_CHECK_PORT_B && | |
5772 | (adapter->hw.bus.func == 1)) | |
5773 | e1000_read_nvm(&adapter->hw, | |
5774 | NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
5775 | else | |
5776 | e1000_read_nvm(&adapter->hw, | |
5777 | NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
5778 | } | |
5779 | ||
5780 | /* fetch WoL from EEPROM */ | |
5781 | if (eeprom_data & eeprom_apme_mask) | |
5782 | adapter->eeprom_wol |= E1000_WUFC_MAG; | |
5783 | ||
5784 | /* | |
5785 | * now that we have the eeprom settings, apply the special cases | |
5786 | * where the eeprom may be wrong or the board simply won't support | |
5787 | * wake on lan on a particular port | |
5788 | */ | |
5789 | if (!(adapter->flags & FLAG_HAS_WOL)) | |
5790 | adapter->eeprom_wol = 0; | |
5791 | ||
5792 | /* initialize the wol settings based on the eeprom settings */ | |
5793 | adapter->wol = adapter->eeprom_wol; | |
6ff68026 | 5794 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
bc7f75fa | 5795 | |
84527590 BA |
5796 | /* save off EEPROM version number */ |
5797 | e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); | |
5798 | ||
bc7f75fa AK |
5799 | /* reset the hardware with the new settings */ |
5800 | e1000e_reset(adapter); | |
5801 | ||
ad68076e BA |
5802 | /* |
5803 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 5804 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
5805 | * under the control of the driver. |
5806 | */ | |
c43bc57e | 5807 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
5808 | e1000_get_hw_control(adapter); |
5809 | ||
bc7f75fa AK |
5810 | strcpy(netdev->name, "eth%d"); |
5811 | err = register_netdev(netdev); | |
5812 | if (err) | |
5813 | goto err_register; | |
5814 | ||
9c563d20 JB |
5815 | /* carrier off reporting is important to ethtool even BEFORE open */ |
5816 | netif_carrier_off(netdev); | |
5817 | ||
bc7f75fa AK |
5818 | e1000_print_device_info(adapter); |
5819 | ||
23606cf5 RW |
5820 | if (pci_dev_run_wake(pdev)) { |
5821 | pm_runtime_set_active(&pdev->dev); | |
5822 | pm_runtime_enable(&pdev->dev); | |
5823 | } | |
5824 | pm_schedule_suspend(&pdev->dev, MSEC_PER_SEC); | |
5825 | ||
bc7f75fa AK |
5826 | return 0; |
5827 | ||
5828 | err_register: | |
c43bc57e JB |
5829 | if (!(adapter->flags & FLAG_HAS_AMT)) |
5830 | e1000_release_hw_control(adapter); | |
bc7f75fa AK |
5831 | err_eeprom: |
5832 | if (!e1000_check_reset_block(&adapter->hw)) | |
5833 | e1000_phy_hw_reset(&adapter->hw); | |
c43bc57e | 5834 | err_hw_init: |
bc7f75fa | 5835 | |
bc7f75fa AK |
5836 | kfree(adapter->tx_ring); |
5837 | kfree(adapter->rx_ring); | |
5838 | err_sw_init: | |
c43bc57e JB |
5839 | if (adapter->hw.flash_address) |
5840 | iounmap(adapter->hw.flash_address); | |
e82f54ba | 5841 | e1000e_reset_interrupt_capability(adapter); |
c43bc57e | 5842 | err_flashmap: |
bc7f75fa AK |
5843 | iounmap(adapter->hw.hw_addr); |
5844 | err_ioremap: | |
5845 | free_netdev(netdev); | |
5846 | err_alloc_etherdev: | |
f0f422e5 BA |
5847 | pci_release_selected_regions(pdev, |
5848 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
bc7f75fa AK |
5849 | err_pci_reg: |
5850 | err_dma: | |
5851 | pci_disable_device(pdev); | |
5852 | return err; | |
5853 | } | |
5854 | ||
5855 | /** | |
5856 | * e1000_remove - Device Removal Routine | |
5857 | * @pdev: PCI device information struct | |
5858 | * | |
5859 | * e1000_remove is called by the PCI subsystem to alert the driver | |
5860 | * that it should release a PCI device. The could be caused by a | |
5861 | * Hot-Plug event, or because the driver is going to be removed from | |
5862 | * memory. | |
5863 | **/ | |
5864 | static void __devexit e1000_remove(struct pci_dev *pdev) | |
5865 | { | |
5866 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5867 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
23606cf5 RW |
5868 | bool down = test_bit(__E1000_DOWN, &adapter->state); |
5869 | ||
5870 | pm_runtime_get_sync(&pdev->dev); | |
bc7f75fa | 5871 | |
ad68076e BA |
5872 | /* |
5873 | * flush_scheduled work may reschedule our watchdog task, so | |
5874 | * explicitly disable watchdog tasks from being rescheduled | |
5875 | */ | |
23606cf5 RW |
5876 | if (!down) |
5877 | set_bit(__E1000_DOWN, &adapter->state); | |
bc7f75fa AK |
5878 | del_timer_sync(&adapter->watchdog_timer); |
5879 | del_timer_sync(&adapter->phy_info_timer); | |
5880 | ||
41cec6f1 BA |
5881 | cancel_work_sync(&adapter->reset_task); |
5882 | cancel_work_sync(&adapter->watchdog_task); | |
5883 | cancel_work_sync(&adapter->downshift_task); | |
5884 | cancel_work_sync(&adapter->update_phy_task); | |
5885 | cancel_work_sync(&adapter->print_hang_task); | |
bc7f75fa AK |
5886 | flush_scheduled_work(); |
5887 | ||
17f208de BA |
5888 | if (!(netdev->flags & IFF_UP)) |
5889 | e1000_power_down_phy(adapter); | |
5890 | ||
23606cf5 RW |
5891 | /* Don't lie to e1000_close() down the road. */ |
5892 | if (!down) | |
5893 | clear_bit(__E1000_DOWN, &adapter->state); | |
17f208de BA |
5894 | unregister_netdev(netdev); |
5895 | ||
23606cf5 RW |
5896 | if (pci_dev_run_wake(pdev)) { |
5897 | pm_runtime_disable(&pdev->dev); | |
5898 | pm_runtime_set_suspended(&pdev->dev); | |
5899 | } | |
5900 | pm_runtime_put_noidle(&pdev->dev); | |
5901 | ||
ad68076e BA |
5902 | /* |
5903 | * Release control of h/w to f/w. If f/w is AMT enabled, this | |
5904 | * would have already happened in close and is redundant. | |
5905 | */ | |
bc7f75fa AK |
5906 | e1000_release_hw_control(adapter); |
5907 | ||
4662e82b | 5908 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa AK |
5909 | kfree(adapter->tx_ring); |
5910 | kfree(adapter->rx_ring); | |
5911 | ||
5912 | iounmap(adapter->hw.hw_addr); | |
5913 | if (adapter->hw.flash_address) | |
5914 | iounmap(adapter->hw.flash_address); | |
f0f422e5 BA |
5915 | pci_release_selected_regions(pdev, |
5916 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
bc7f75fa AK |
5917 | |
5918 | free_netdev(netdev); | |
5919 | ||
111b9dc5 | 5920 | /* AER disable */ |
19d5afd4 | 5921 | pci_disable_pcie_error_reporting(pdev); |
111b9dc5 | 5922 | |
bc7f75fa AK |
5923 | pci_disable_device(pdev); |
5924 | } | |
5925 | ||
5926 | /* PCI Error Recovery (ERS) */ | |
5927 | static struct pci_error_handlers e1000_err_handler = { | |
5928 | .error_detected = e1000_io_error_detected, | |
5929 | .slot_reset = e1000_io_slot_reset, | |
5930 | .resume = e1000_io_resume, | |
5931 | }; | |
5932 | ||
a3aa1884 | 5933 | static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
bc7f75fa AK |
5934 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
5935 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, | |
5936 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, | |
5937 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, | |
5938 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, | |
5939 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, | |
040babf9 AK |
5940 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
5941 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, | |
5942 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, | |
ad68076e | 5943 | |
bc7f75fa AK |
5944 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
5945 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, | |
5946 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, | |
5947 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, | |
ad68076e | 5948 | |
bc7f75fa AK |
5949 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
5950 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, | |
5951 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, | |
ad68076e | 5952 | |
4662e82b | 5953 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
bef28b11 | 5954 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
8c81c9c3 | 5955 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
4662e82b | 5956 | |
bc7f75fa AK |
5957 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
5958 | board_80003es2lan }, | |
5959 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), | |
5960 | board_80003es2lan }, | |
5961 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), | |
5962 | board_80003es2lan }, | |
5963 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), | |
5964 | board_80003es2lan }, | |
ad68076e | 5965 | |
bc7f75fa AK |
5966 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
5967 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, | |
5968 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, | |
5969 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, | |
5970 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, | |
5971 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, | |
5972 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, | |
9e135a2e | 5973 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
ad68076e | 5974 | |
bc7f75fa AK |
5975 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
5976 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, | |
5977 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, | |
5978 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, | |
5979 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, | |
2f15f9d6 | 5980 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
97ac8cae BA |
5981 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
5982 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, | |
5983 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, | |
5984 | ||
5985 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, | |
5986 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, | |
5987 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, | |
bc7f75fa | 5988 | |
f4187b56 BA |
5989 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
5990 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, | |
10df0b91 | 5991 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
f4187b56 | 5992 | |
a4f58f54 BA |
5993 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
5994 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, | |
5995 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, | |
5996 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, | |
5997 | ||
d3738bb8 BA |
5998 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
5999 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, | |
6000 | ||
bc7f75fa AK |
6001 | { } /* terminate list */ |
6002 | }; | |
6003 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
6004 | ||
a0340162 | 6005 | #ifdef CONFIG_PM_OPS |
23606cf5 | 6006 | static const struct dev_pm_ops e1000_pm_ops = { |
a0340162 RW |
6007 | SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume) |
6008 | SET_RUNTIME_PM_OPS(e1000_runtime_suspend, | |
6009 | e1000_runtime_resume, e1000_idle) | |
23606cf5 | 6010 | }; |
e50208a0 | 6011 | #endif |
23606cf5 | 6012 | |
bc7f75fa AK |
6013 | /* PCI Device API Driver */ |
6014 | static struct pci_driver e1000_driver = { | |
6015 | .name = e1000e_driver_name, | |
6016 | .id_table = e1000_pci_tbl, | |
6017 | .probe = e1000_probe, | |
6018 | .remove = __devexit_p(e1000_remove), | |
a0340162 | 6019 | #ifdef CONFIG_PM_OPS |
23606cf5 | 6020 | .driver.pm = &e1000_pm_ops, |
bc7f75fa AK |
6021 | #endif |
6022 | .shutdown = e1000_shutdown, | |
6023 | .err_handler = &e1000_err_handler | |
6024 | }; | |
6025 | ||
6026 | /** | |
6027 | * e1000_init_module - Driver Registration Routine | |
6028 | * | |
6029 | * e1000_init_module is the first routine called when the driver is | |
6030 | * loaded. All it does is register with the PCI subsystem. | |
6031 | **/ | |
6032 | static int __init e1000_init_module(void) | |
6033 | { | |
6034 | int ret; | |
8544b9f7 BA |
6035 | pr_info("Intel(R) PRO/1000 Network Driver - %s\n", |
6036 | e1000e_driver_version); | |
451152d9 | 6037 | pr_info("Copyright (c) 1999 - 2010 Intel Corporation.\n"); |
bc7f75fa | 6038 | ret = pci_register_driver(&e1000_driver); |
53ec5498 | 6039 | |
bc7f75fa AK |
6040 | return ret; |
6041 | } | |
6042 | module_init(e1000_init_module); | |
6043 | ||
6044 | /** | |
6045 | * e1000_exit_module - Driver Exit Cleanup Routine | |
6046 | * | |
6047 | * e1000_exit_module is called just before the driver is removed | |
6048 | * from memory. | |
6049 | **/ | |
6050 | static void __exit e1000_exit_module(void) | |
6051 | { | |
6052 | pci_unregister_driver(&e1000_driver); | |
6053 | } | |
6054 | module_exit(e1000_exit_module); | |
6055 | ||
6056 | ||
6057 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
6058 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
6059 | MODULE_LICENSE("GPL"); | |
6060 | MODULE_VERSION(DRV_VERSION); | |
6061 | ||
6062 | /* e1000_main.c */ |