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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); | |
bc8acf2c ED |
478 | |
479 | skb_checksum_none_assert(skb); | |
bc7f75fa AK |
480 | |
481 | /* Ignore Checksum bit is set */ | |
482 | if (status & E1000_RXD_STAT_IXSM) | |
483 | return; | |
484 | /* TCP/UDP checksum error bit is set */ | |
485 | if (errors & E1000_RXD_ERR_TCPE) { | |
486 | /* let the stack verify checksum errors */ | |
487 | adapter->hw_csum_err++; | |
488 | return; | |
489 | } | |
490 | ||
491 | /* TCP/UDP Checksum has not been calculated */ | |
492 | if (!(status & (E1000_RXD_STAT_TCPCS | E1000_RXD_STAT_UDPCS))) | |
493 | return; | |
494 | ||
495 | /* It must be a TCP or UDP packet with a valid checksum */ | |
496 | if (status & E1000_RXD_STAT_TCPCS) { | |
497 | /* TCP checksum is good */ | |
498 | skb->ip_summed = CHECKSUM_UNNECESSARY; | |
499 | } else { | |
ad68076e BA |
500 | /* |
501 | * IP fragment with UDP payload | |
502 | * Hardware complements the payload checksum, so we undo it | |
bc7f75fa AK |
503 | * and then put the value in host order for further stack use. |
504 | */ | |
a39fe742 AV |
505 | __sum16 sum = (__force __sum16)htons(csum); |
506 | skb->csum = csum_unfold(~sum); | |
bc7f75fa AK |
507 | skb->ip_summed = CHECKSUM_COMPLETE; |
508 | } | |
509 | adapter->hw_csum_good++; | |
510 | } | |
511 | ||
512 | /** | |
513 | * e1000_alloc_rx_buffers - Replace used receive buffers; legacy & extended | |
514 | * @adapter: address of board private structure | |
515 | **/ | |
516 | static void e1000_alloc_rx_buffers(struct e1000_adapter *adapter, | |
517 | int cleaned_count) | |
518 | { | |
519 | struct net_device *netdev = adapter->netdev; | |
520 | struct pci_dev *pdev = adapter->pdev; | |
521 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
522 | struct e1000_rx_desc *rx_desc; | |
523 | struct e1000_buffer *buffer_info; | |
524 | struct sk_buff *skb; | |
525 | unsigned int i; | |
89d71a66 | 526 | unsigned int bufsz = adapter->rx_buffer_len; |
bc7f75fa AK |
527 | |
528 | i = rx_ring->next_to_use; | |
529 | buffer_info = &rx_ring->buffer_info[i]; | |
530 | ||
531 | while (cleaned_count--) { | |
532 | skb = buffer_info->skb; | |
533 | if (skb) { | |
534 | skb_trim(skb, 0); | |
535 | goto map_skb; | |
536 | } | |
537 | ||
89d71a66 | 538 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
bc7f75fa AK |
539 | if (!skb) { |
540 | /* Better luck next round */ | |
541 | adapter->alloc_rx_buff_failed++; | |
542 | break; | |
543 | } | |
544 | ||
bc7f75fa AK |
545 | buffer_info->skb = skb; |
546 | map_skb: | |
0be3f55f | 547 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
bc7f75fa | 548 | adapter->rx_buffer_len, |
0be3f55f NN |
549 | DMA_FROM_DEVICE); |
550 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
bc7f75fa AK |
551 | dev_err(&pdev->dev, "RX DMA map failed\n"); |
552 | adapter->rx_dma_failed++; | |
553 | break; | |
554 | } | |
555 | ||
556 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
557 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
558 | ||
50849d79 TH |
559 | if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
560 | /* | |
561 | * Force memory writes to complete before letting h/w | |
562 | * know there are new descriptors to fetch. (Only | |
563 | * applicable for weak-ordered memory model archs, | |
564 | * such as IA-64). | |
565 | */ | |
566 | wmb(); | |
567 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
568 | } | |
bc7f75fa AK |
569 | i++; |
570 | if (i == rx_ring->count) | |
571 | i = 0; | |
572 | buffer_info = &rx_ring->buffer_info[i]; | |
573 | } | |
574 | ||
50849d79 | 575 | rx_ring->next_to_use = i; |
bc7f75fa AK |
576 | } |
577 | ||
578 | /** | |
579 | * e1000_alloc_rx_buffers_ps - Replace used receive buffers; packet split | |
580 | * @adapter: address of board private structure | |
581 | **/ | |
582 | static void e1000_alloc_rx_buffers_ps(struct e1000_adapter *adapter, | |
583 | int cleaned_count) | |
584 | { | |
585 | struct net_device *netdev = adapter->netdev; | |
586 | struct pci_dev *pdev = adapter->pdev; | |
587 | union e1000_rx_desc_packet_split *rx_desc; | |
588 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
589 | struct e1000_buffer *buffer_info; | |
590 | struct e1000_ps_page *ps_page; | |
591 | struct sk_buff *skb; | |
592 | unsigned int i, j; | |
593 | ||
594 | i = rx_ring->next_to_use; | |
595 | buffer_info = &rx_ring->buffer_info[i]; | |
596 | ||
597 | while (cleaned_count--) { | |
598 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
599 | ||
600 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 AK |
601 | ps_page = &buffer_info->ps_pages[j]; |
602 | if (j >= adapter->rx_ps_pages) { | |
603 | /* all unused desc entries get hw null ptr */ | |
a39fe742 | 604 | rx_desc->read.buffer_addr[j+1] = ~cpu_to_le64(0); |
47f44e40 AK |
605 | continue; |
606 | } | |
607 | if (!ps_page->page) { | |
608 | ps_page->page = alloc_page(GFP_ATOMIC); | |
bc7f75fa | 609 | if (!ps_page->page) { |
47f44e40 AK |
610 | adapter->alloc_rx_buff_failed++; |
611 | goto no_buffers; | |
612 | } | |
0be3f55f NN |
613 | ps_page->dma = dma_map_page(&pdev->dev, |
614 | ps_page->page, | |
615 | 0, PAGE_SIZE, | |
616 | DMA_FROM_DEVICE); | |
617 | if (dma_mapping_error(&pdev->dev, | |
618 | ps_page->dma)) { | |
47f44e40 AK |
619 | dev_err(&adapter->pdev->dev, |
620 | "RX DMA page map failed\n"); | |
621 | adapter->rx_dma_failed++; | |
622 | goto no_buffers; | |
bc7f75fa | 623 | } |
bc7f75fa | 624 | } |
47f44e40 AK |
625 | /* |
626 | * Refresh the desc even if buffer_addrs | |
627 | * didn't change because each write-back | |
628 | * erases this info. | |
629 | */ | |
630 | rx_desc->read.buffer_addr[j+1] = | |
631 | cpu_to_le64(ps_page->dma); | |
bc7f75fa AK |
632 | } |
633 | ||
89d71a66 ED |
634 | skb = netdev_alloc_skb_ip_align(netdev, |
635 | adapter->rx_ps_bsize0); | |
bc7f75fa AK |
636 | |
637 | if (!skb) { | |
638 | adapter->alloc_rx_buff_failed++; | |
639 | break; | |
640 | } | |
641 | ||
bc7f75fa | 642 | buffer_info->skb = skb; |
0be3f55f | 643 | buffer_info->dma = dma_map_single(&pdev->dev, skb->data, |
bc7f75fa | 644 | adapter->rx_ps_bsize0, |
0be3f55f NN |
645 | DMA_FROM_DEVICE); |
646 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) { | |
bc7f75fa AK |
647 | dev_err(&pdev->dev, "RX DMA map failed\n"); |
648 | adapter->rx_dma_failed++; | |
649 | /* cleanup skb */ | |
650 | dev_kfree_skb_any(skb); | |
651 | buffer_info->skb = NULL; | |
652 | break; | |
653 | } | |
654 | ||
655 | rx_desc->read.buffer_addr[0] = cpu_to_le64(buffer_info->dma); | |
656 | ||
50849d79 TH |
657 | if (unlikely(!(i & (E1000_RX_BUFFER_WRITE - 1)))) { |
658 | /* | |
659 | * Force memory writes to complete before letting h/w | |
660 | * know there are new descriptors to fetch. (Only | |
661 | * applicable for weak-ordered memory model archs, | |
662 | * such as IA-64). | |
663 | */ | |
664 | wmb(); | |
665 | writel(i<<1, adapter->hw.hw_addr + rx_ring->tail); | |
666 | } | |
667 | ||
bc7f75fa AK |
668 | i++; |
669 | if (i == rx_ring->count) | |
670 | i = 0; | |
671 | buffer_info = &rx_ring->buffer_info[i]; | |
672 | } | |
673 | ||
674 | no_buffers: | |
50849d79 | 675 | rx_ring->next_to_use = i; |
bc7f75fa AK |
676 | } |
677 | ||
97ac8cae BA |
678 | /** |
679 | * e1000_alloc_jumbo_rx_buffers - Replace used jumbo receive buffers | |
680 | * @adapter: address of board private structure | |
97ac8cae BA |
681 | * @cleaned_count: number of buffers to allocate this pass |
682 | **/ | |
683 | ||
684 | static void e1000_alloc_jumbo_rx_buffers(struct e1000_adapter *adapter, | |
685 | int cleaned_count) | |
686 | { | |
687 | struct net_device *netdev = adapter->netdev; | |
688 | struct pci_dev *pdev = adapter->pdev; | |
689 | struct e1000_rx_desc *rx_desc; | |
690 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
691 | struct e1000_buffer *buffer_info; | |
692 | struct sk_buff *skb; | |
693 | unsigned int i; | |
89d71a66 | 694 | unsigned int bufsz = 256 - 16 /* for skb_reserve */; |
97ac8cae BA |
695 | |
696 | i = rx_ring->next_to_use; | |
697 | buffer_info = &rx_ring->buffer_info[i]; | |
698 | ||
699 | while (cleaned_count--) { | |
700 | skb = buffer_info->skb; | |
701 | if (skb) { | |
702 | skb_trim(skb, 0); | |
703 | goto check_page; | |
704 | } | |
705 | ||
89d71a66 | 706 | skb = netdev_alloc_skb_ip_align(netdev, bufsz); |
97ac8cae BA |
707 | if (unlikely(!skb)) { |
708 | /* Better luck next round */ | |
709 | adapter->alloc_rx_buff_failed++; | |
710 | break; | |
711 | } | |
712 | ||
97ac8cae BA |
713 | buffer_info->skb = skb; |
714 | check_page: | |
715 | /* allocate a new page if necessary */ | |
716 | if (!buffer_info->page) { | |
717 | buffer_info->page = alloc_page(GFP_ATOMIC); | |
718 | if (unlikely(!buffer_info->page)) { | |
719 | adapter->alloc_rx_buff_failed++; | |
720 | break; | |
721 | } | |
722 | } | |
723 | ||
724 | if (!buffer_info->dma) | |
0be3f55f | 725 | buffer_info->dma = dma_map_page(&pdev->dev, |
97ac8cae BA |
726 | buffer_info->page, 0, |
727 | PAGE_SIZE, | |
0be3f55f | 728 | DMA_FROM_DEVICE); |
97ac8cae BA |
729 | |
730 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
731 | rx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
732 | ||
733 | if (unlikely(++i == rx_ring->count)) | |
734 | i = 0; | |
735 | buffer_info = &rx_ring->buffer_info[i]; | |
736 | } | |
737 | ||
738 | if (likely(rx_ring->next_to_use != i)) { | |
739 | rx_ring->next_to_use = i; | |
740 | if (unlikely(i-- == 0)) | |
741 | i = (rx_ring->count - 1); | |
742 | ||
743 | /* Force memory writes to complete before letting h/w | |
744 | * know there are new descriptors to fetch. (Only | |
745 | * applicable for weak-ordered memory model archs, | |
746 | * such as IA-64). */ | |
747 | wmb(); | |
748 | writel(i, adapter->hw.hw_addr + rx_ring->tail); | |
749 | } | |
750 | } | |
751 | ||
bc7f75fa AK |
752 | /** |
753 | * e1000_clean_rx_irq - Send received data up the network stack; legacy | |
754 | * @adapter: board private structure | |
755 | * | |
756 | * the return value indicates whether actual cleaning was done, there | |
757 | * is no guarantee that everything was cleaned | |
758 | **/ | |
759 | static bool e1000_clean_rx_irq(struct e1000_adapter *adapter, | |
760 | int *work_done, int work_to_do) | |
761 | { | |
762 | struct net_device *netdev = adapter->netdev; | |
763 | struct pci_dev *pdev = adapter->pdev; | |
3bb99fe2 | 764 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
765 | struct e1000_ring *rx_ring = adapter->rx_ring; |
766 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
767 | struct e1000_buffer *buffer_info, *next_buffer; | |
768 | u32 length; | |
769 | unsigned int i; | |
770 | int cleaned_count = 0; | |
771 | bool cleaned = 0; | |
772 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
773 | ||
774 | i = rx_ring->next_to_clean; | |
775 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
776 | buffer_info = &rx_ring->buffer_info[i]; | |
777 | ||
778 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
779 | struct sk_buff *skb; | |
780 | u8 status; | |
781 | ||
782 | if (*work_done >= work_to_do) | |
783 | break; | |
784 | (*work_done)++; | |
2d0bb1c1 | 785 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
bc7f75fa AK |
786 | |
787 | status = rx_desc->status; | |
788 | skb = buffer_info->skb; | |
789 | buffer_info->skb = NULL; | |
790 | ||
791 | prefetch(skb->data - NET_IP_ALIGN); | |
792 | ||
793 | i++; | |
794 | if (i == rx_ring->count) | |
795 | i = 0; | |
796 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
797 | prefetch(next_rxd); | |
798 | ||
799 | next_buffer = &rx_ring->buffer_info[i]; | |
800 | ||
801 | cleaned = 1; | |
802 | cleaned_count++; | |
0be3f55f | 803 | dma_unmap_single(&pdev->dev, |
bc7f75fa AK |
804 | buffer_info->dma, |
805 | adapter->rx_buffer_len, | |
0be3f55f | 806 | DMA_FROM_DEVICE); |
bc7f75fa AK |
807 | buffer_info->dma = 0; |
808 | ||
809 | length = le16_to_cpu(rx_desc->length); | |
810 | ||
b94b5028 JB |
811 | /* |
812 | * !EOP means multiple descriptors were used to store a single | |
813 | * packet, if that's the case we need to toss it. In fact, we | |
814 | * need to toss every packet with the EOP bit clear and the | |
815 | * next frame that _does_ have the EOP bit set, as it is by | |
816 | * definition only a frame fragment | |
817 | */ | |
818 | if (unlikely(!(status & E1000_RXD_STAT_EOP))) | |
819 | adapter->flags2 |= FLAG2_IS_DISCARDING; | |
820 | ||
821 | if (adapter->flags2 & FLAG2_IS_DISCARDING) { | |
bc7f75fa | 822 | /* All receives must fit into a single buffer */ |
3bb99fe2 | 823 | e_dbg("Receive packet consumed multiple buffers\n"); |
bc7f75fa AK |
824 | /* recycle */ |
825 | buffer_info->skb = skb; | |
b94b5028 JB |
826 | if (status & E1000_RXD_STAT_EOP) |
827 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; | |
bc7f75fa AK |
828 | goto next_desc; |
829 | } | |
830 | ||
831 | if (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK) { | |
832 | /* recycle */ | |
833 | buffer_info->skb = skb; | |
834 | goto next_desc; | |
835 | } | |
836 | ||
eb7c3adb JK |
837 | /* adjust length to remove Ethernet CRC */ |
838 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
839 | length -= 4; | |
840 | ||
bc7f75fa AK |
841 | total_rx_bytes += length; |
842 | total_rx_packets++; | |
843 | ||
ad68076e BA |
844 | /* |
845 | * code added for copybreak, this should improve | |
bc7f75fa | 846 | * performance for small packets with large amounts |
ad68076e BA |
847 | * of reassembly being done in the stack |
848 | */ | |
bc7f75fa AK |
849 | if (length < copybreak) { |
850 | struct sk_buff *new_skb = | |
89d71a66 | 851 | netdev_alloc_skb_ip_align(netdev, length); |
bc7f75fa | 852 | if (new_skb) { |
808ff676 BA |
853 | skb_copy_to_linear_data_offset(new_skb, |
854 | -NET_IP_ALIGN, | |
855 | (skb->data - | |
856 | NET_IP_ALIGN), | |
857 | (length + | |
858 | NET_IP_ALIGN)); | |
bc7f75fa AK |
859 | /* save the skb in buffer_info as good */ |
860 | buffer_info->skb = skb; | |
861 | skb = new_skb; | |
862 | } | |
863 | /* else just continue with the old one */ | |
864 | } | |
865 | /* end copybreak code */ | |
866 | skb_put(skb, length); | |
867 | ||
868 | /* Receive Checksum Offload */ | |
869 | e1000_rx_checksum(adapter, | |
870 | (u32)(status) | | |
871 | ((u32)(rx_desc->errors) << 24), | |
872 | le16_to_cpu(rx_desc->csum), skb); | |
873 | ||
874 | e1000_receive_skb(adapter, netdev, skb,status,rx_desc->special); | |
875 | ||
876 | next_desc: | |
877 | rx_desc->status = 0; | |
878 | ||
879 | /* return some buffers to hardware, one at a time is too slow */ | |
880 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
881 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
882 | cleaned_count = 0; | |
883 | } | |
884 | ||
885 | /* use prefetched values */ | |
886 | rx_desc = next_rxd; | |
887 | buffer_info = next_buffer; | |
888 | } | |
889 | rx_ring->next_to_clean = i; | |
890 | ||
891 | cleaned_count = e1000_desc_unused(rx_ring); | |
892 | if (cleaned_count) | |
893 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
894 | ||
bc7f75fa | 895 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 896 | adapter->total_rx_packets += total_rx_packets; |
7274c20f AK |
897 | netdev->stats.rx_bytes += total_rx_bytes; |
898 | netdev->stats.rx_packets += total_rx_packets; | |
bc7f75fa AK |
899 | return cleaned; |
900 | } | |
901 | ||
bc7f75fa AK |
902 | static void e1000_put_txbuf(struct e1000_adapter *adapter, |
903 | struct e1000_buffer *buffer_info) | |
904 | { | |
03b1320d AD |
905 | if (buffer_info->dma) { |
906 | if (buffer_info->mapped_as_page) | |
0be3f55f NN |
907 | dma_unmap_page(&adapter->pdev->dev, buffer_info->dma, |
908 | buffer_info->length, DMA_TO_DEVICE); | |
03b1320d | 909 | else |
0be3f55f NN |
910 | dma_unmap_single(&adapter->pdev->dev, buffer_info->dma, |
911 | buffer_info->length, DMA_TO_DEVICE); | |
03b1320d AD |
912 | buffer_info->dma = 0; |
913 | } | |
bc7f75fa AK |
914 | if (buffer_info->skb) { |
915 | dev_kfree_skb_any(buffer_info->skb); | |
916 | buffer_info->skb = NULL; | |
917 | } | |
1b7719c4 | 918 | buffer_info->time_stamp = 0; |
bc7f75fa AK |
919 | } |
920 | ||
41cec6f1 | 921 | static void e1000_print_hw_hang(struct work_struct *work) |
bc7f75fa | 922 | { |
41cec6f1 BA |
923 | struct e1000_adapter *adapter = container_of(work, |
924 | struct e1000_adapter, | |
925 | print_hang_task); | |
bc7f75fa AK |
926 | struct e1000_ring *tx_ring = adapter->tx_ring; |
927 | unsigned int i = tx_ring->next_to_clean; | |
928 | unsigned int eop = tx_ring->buffer_info[i].next_to_watch; | |
929 | struct e1000_tx_desc *eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
41cec6f1 BA |
930 | struct e1000_hw *hw = &adapter->hw; |
931 | u16 phy_status, phy_1000t_status, phy_ext_status; | |
932 | u16 pci_status; | |
933 | ||
934 | e1e_rphy(hw, PHY_STATUS, &phy_status); | |
935 | e1e_rphy(hw, PHY_1000T_STATUS, &phy_1000t_status); | |
936 | e1e_rphy(hw, PHY_EXT_STATUS, &phy_ext_status); | |
bc7f75fa | 937 | |
41cec6f1 BA |
938 | pci_read_config_word(adapter->pdev, PCI_STATUS, &pci_status); |
939 | ||
940 | /* detected Hardware unit hang */ | |
941 | e_err("Detected Hardware Unit Hang:\n" | |
44defeb3 JK |
942 | " TDH <%x>\n" |
943 | " TDT <%x>\n" | |
944 | " next_to_use <%x>\n" | |
945 | " next_to_clean <%x>\n" | |
946 | "buffer_info[next_to_clean]:\n" | |
947 | " time_stamp <%lx>\n" | |
948 | " next_to_watch <%x>\n" | |
949 | " jiffies <%lx>\n" | |
41cec6f1 BA |
950 | " next_to_watch.status <%x>\n" |
951 | "MAC Status <%x>\n" | |
952 | "PHY Status <%x>\n" | |
953 | "PHY 1000BASE-T Status <%x>\n" | |
954 | "PHY Extended Status <%x>\n" | |
955 | "PCI Status <%x>\n", | |
44defeb3 JK |
956 | readl(adapter->hw.hw_addr + tx_ring->head), |
957 | readl(adapter->hw.hw_addr + tx_ring->tail), | |
958 | tx_ring->next_to_use, | |
959 | tx_ring->next_to_clean, | |
960 | tx_ring->buffer_info[eop].time_stamp, | |
961 | eop, | |
962 | jiffies, | |
41cec6f1 BA |
963 | eop_desc->upper.fields.status, |
964 | er32(STATUS), | |
965 | phy_status, | |
966 | phy_1000t_status, | |
967 | phy_ext_status, | |
968 | pci_status); | |
bc7f75fa AK |
969 | } |
970 | ||
971 | /** | |
972 | * e1000_clean_tx_irq - Reclaim resources after transmit completes | |
973 | * @adapter: board private structure | |
974 | * | |
975 | * the return value indicates whether actual cleaning was done, there | |
976 | * is no guarantee that everything was cleaned | |
977 | **/ | |
978 | static bool e1000_clean_tx_irq(struct e1000_adapter *adapter) | |
979 | { | |
980 | struct net_device *netdev = adapter->netdev; | |
981 | struct e1000_hw *hw = &adapter->hw; | |
982 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
983 | struct e1000_tx_desc *tx_desc, *eop_desc; | |
984 | struct e1000_buffer *buffer_info; | |
985 | unsigned int i, eop; | |
986 | unsigned int count = 0; | |
bc7f75fa AK |
987 | unsigned int total_tx_bytes = 0, total_tx_packets = 0; |
988 | ||
989 | i = tx_ring->next_to_clean; | |
990 | eop = tx_ring->buffer_info[i].next_to_watch; | |
991 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
992 | ||
12d04a3c AD |
993 | while ((eop_desc->upper.data & cpu_to_le32(E1000_TXD_STAT_DD)) && |
994 | (count < tx_ring->count)) { | |
a86043c2 | 995 | bool cleaned = false; |
2d0bb1c1 | 996 | rmb(); /* read buffer_info after eop_desc */ |
a86043c2 | 997 | for (; !cleaned; count++) { |
bc7f75fa AK |
998 | tx_desc = E1000_TX_DESC(*tx_ring, i); |
999 | buffer_info = &tx_ring->buffer_info[i]; | |
1000 | cleaned = (i == eop); | |
1001 | ||
1002 | if (cleaned) { | |
9ed318d5 TH |
1003 | total_tx_packets += buffer_info->segs; |
1004 | total_tx_bytes += buffer_info->bytecount; | |
bc7f75fa AK |
1005 | } |
1006 | ||
1007 | e1000_put_txbuf(adapter, buffer_info); | |
1008 | tx_desc->upper.data = 0; | |
1009 | ||
1010 | i++; | |
1011 | if (i == tx_ring->count) | |
1012 | i = 0; | |
1013 | } | |
1014 | ||
dac87619 TL |
1015 | if (i == tx_ring->next_to_use) |
1016 | break; | |
bc7f75fa AK |
1017 | eop = tx_ring->buffer_info[i].next_to_watch; |
1018 | eop_desc = E1000_TX_DESC(*tx_ring, eop); | |
bc7f75fa AK |
1019 | } |
1020 | ||
1021 | tx_ring->next_to_clean = i; | |
1022 | ||
1023 | #define TX_WAKE_THRESHOLD 32 | |
a86043c2 JB |
1024 | if (count && netif_carrier_ok(netdev) && |
1025 | e1000_desc_unused(tx_ring) >= TX_WAKE_THRESHOLD) { | |
bc7f75fa AK |
1026 | /* Make sure that anybody stopping the queue after this |
1027 | * sees the new next_to_clean. | |
1028 | */ | |
1029 | smp_mb(); | |
1030 | ||
1031 | if (netif_queue_stopped(netdev) && | |
1032 | !(test_bit(__E1000_DOWN, &adapter->state))) { | |
1033 | netif_wake_queue(netdev); | |
1034 | ++adapter->restart_queue; | |
1035 | } | |
1036 | } | |
1037 | ||
1038 | if (adapter->detect_tx_hung) { | |
41cec6f1 BA |
1039 | /* |
1040 | * Detect a transmit hang in hardware, this serializes the | |
1041 | * check with the clearing of time_stamp and movement of i | |
1042 | */ | |
bc7f75fa | 1043 | adapter->detect_tx_hung = 0; |
12d04a3c AD |
1044 | if (tx_ring->buffer_info[i].time_stamp && |
1045 | time_after(jiffies, tx_ring->buffer_info[i].time_stamp | |
8e95a202 JP |
1046 | + (adapter->tx_timeout_factor * HZ)) && |
1047 | !(er32(STATUS) & E1000_STATUS_TXOFF)) { | |
41cec6f1 | 1048 | schedule_work(&adapter->print_hang_task); |
bc7f75fa AK |
1049 | netif_stop_queue(netdev); |
1050 | } | |
1051 | } | |
1052 | adapter->total_tx_bytes += total_tx_bytes; | |
1053 | adapter->total_tx_packets += total_tx_packets; | |
7274c20f AK |
1054 | netdev->stats.tx_bytes += total_tx_bytes; |
1055 | netdev->stats.tx_packets += total_tx_packets; | |
12d04a3c | 1056 | return (count < tx_ring->count); |
bc7f75fa AK |
1057 | } |
1058 | ||
bc7f75fa AK |
1059 | /** |
1060 | * e1000_clean_rx_irq_ps - Send received data up the network stack; packet split | |
1061 | * @adapter: board private structure | |
1062 | * | |
1063 | * the return value indicates whether actual cleaning was done, there | |
1064 | * is no guarantee that everything was cleaned | |
1065 | **/ | |
1066 | static bool e1000_clean_rx_irq_ps(struct e1000_adapter *adapter, | |
1067 | int *work_done, int work_to_do) | |
1068 | { | |
3bb99fe2 | 1069 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa AK |
1070 | union e1000_rx_desc_packet_split *rx_desc, *next_rxd; |
1071 | struct net_device *netdev = adapter->netdev; | |
1072 | struct pci_dev *pdev = adapter->pdev; | |
1073 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1074 | struct e1000_buffer *buffer_info, *next_buffer; | |
1075 | struct e1000_ps_page *ps_page; | |
1076 | struct sk_buff *skb; | |
1077 | unsigned int i, j; | |
1078 | u32 length, staterr; | |
1079 | int cleaned_count = 0; | |
1080 | bool cleaned = 0; | |
1081 | unsigned int total_rx_bytes = 0, total_rx_packets = 0; | |
1082 | ||
1083 | i = rx_ring->next_to_clean; | |
1084 | rx_desc = E1000_RX_DESC_PS(*rx_ring, i); | |
1085 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
1086 | buffer_info = &rx_ring->buffer_info[i]; | |
1087 | ||
1088 | while (staterr & E1000_RXD_STAT_DD) { | |
1089 | if (*work_done >= work_to_do) | |
1090 | break; | |
1091 | (*work_done)++; | |
1092 | skb = buffer_info->skb; | |
2d0bb1c1 | 1093 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
bc7f75fa AK |
1094 | |
1095 | /* in the packet split case this is header only */ | |
1096 | prefetch(skb->data - NET_IP_ALIGN); | |
1097 | ||
1098 | i++; | |
1099 | if (i == rx_ring->count) | |
1100 | i = 0; | |
1101 | next_rxd = E1000_RX_DESC_PS(*rx_ring, i); | |
1102 | prefetch(next_rxd); | |
1103 | ||
1104 | next_buffer = &rx_ring->buffer_info[i]; | |
1105 | ||
1106 | cleaned = 1; | |
1107 | cleaned_count++; | |
0be3f55f | 1108 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
bc7f75fa | 1109 | adapter->rx_ps_bsize0, |
0be3f55f | 1110 | DMA_FROM_DEVICE); |
bc7f75fa AK |
1111 | buffer_info->dma = 0; |
1112 | ||
b94b5028 JB |
1113 | /* see !EOP comment in other rx routine */ |
1114 | if (!(staterr & E1000_RXD_STAT_EOP)) | |
1115 | adapter->flags2 |= FLAG2_IS_DISCARDING; | |
1116 | ||
1117 | if (adapter->flags2 & FLAG2_IS_DISCARDING) { | |
3bb99fe2 BA |
1118 | e_dbg("Packet Split buffers didn't pick up the full " |
1119 | "packet\n"); | |
bc7f75fa | 1120 | dev_kfree_skb_irq(skb); |
b94b5028 JB |
1121 | if (staterr & E1000_RXD_STAT_EOP) |
1122 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; | |
bc7f75fa AK |
1123 | goto next_desc; |
1124 | } | |
1125 | ||
1126 | if (staterr & E1000_RXDEXT_ERR_FRAME_ERR_MASK) { | |
1127 | dev_kfree_skb_irq(skb); | |
1128 | goto next_desc; | |
1129 | } | |
1130 | ||
1131 | length = le16_to_cpu(rx_desc->wb.middle.length0); | |
1132 | ||
1133 | if (!length) { | |
3bb99fe2 BA |
1134 | e_dbg("Last part of the packet spanning multiple " |
1135 | "descriptors\n"); | |
bc7f75fa AK |
1136 | dev_kfree_skb_irq(skb); |
1137 | goto next_desc; | |
1138 | } | |
1139 | ||
1140 | /* Good Receive */ | |
1141 | skb_put(skb, length); | |
1142 | ||
1143 | { | |
ad68076e BA |
1144 | /* |
1145 | * this looks ugly, but it seems compiler issues make it | |
1146 | * more efficient than reusing j | |
1147 | */ | |
bc7f75fa AK |
1148 | int l1 = le16_to_cpu(rx_desc->wb.upper.length[0]); |
1149 | ||
ad68076e BA |
1150 | /* |
1151 | * page alloc/put takes too long and effects small packet | |
1152 | * throughput, so unsplit small packets and save the alloc/put | |
1153 | * only valid in softirq (napi) context to call kmap_* | |
1154 | */ | |
bc7f75fa AK |
1155 | if (l1 && (l1 <= copybreak) && |
1156 | ((length + l1) <= adapter->rx_ps_bsize0)) { | |
1157 | u8 *vaddr; | |
1158 | ||
47f44e40 | 1159 | ps_page = &buffer_info->ps_pages[0]; |
bc7f75fa | 1160 | |
ad68076e BA |
1161 | /* |
1162 | * there is no documentation about how to call | |
bc7f75fa | 1163 | * kmap_atomic, so we can't hold the mapping |
ad68076e BA |
1164 | * very long |
1165 | */ | |
0be3f55f NN |
1166 | dma_sync_single_for_cpu(&pdev->dev, ps_page->dma, |
1167 | PAGE_SIZE, DMA_FROM_DEVICE); | |
bc7f75fa AK |
1168 | vaddr = kmap_atomic(ps_page->page, KM_SKB_DATA_SOFTIRQ); |
1169 | memcpy(skb_tail_pointer(skb), vaddr, l1); | |
1170 | kunmap_atomic(vaddr, KM_SKB_DATA_SOFTIRQ); | |
0be3f55f NN |
1171 | dma_sync_single_for_device(&pdev->dev, ps_page->dma, |
1172 | PAGE_SIZE, DMA_FROM_DEVICE); | |
140a7480 | 1173 | |
eb7c3adb JK |
1174 | /* remove the CRC */ |
1175 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
1176 | l1 -= 4; | |
1177 | ||
bc7f75fa AK |
1178 | skb_put(skb, l1); |
1179 | goto copydone; | |
1180 | } /* if */ | |
1181 | } | |
1182 | ||
1183 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
1184 | length = le16_to_cpu(rx_desc->wb.upper.length[j]); | |
1185 | if (!length) | |
1186 | break; | |
1187 | ||
47f44e40 | 1188 | ps_page = &buffer_info->ps_pages[j]; |
0be3f55f NN |
1189 | dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
1190 | DMA_FROM_DEVICE); | |
bc7f75fa AK |
1191 | ps_page->dma = 0; |
1192 | skb_fill_page_desc(skb, j, ps_page->page, 0, length); | |
1193 | ps_page->page = NULL; | |
1194 | skb->len += length; | |
1195 | skb->data_len += length; | |
1196 | skb->truesize += length; | |
1197 | } | |
1198 | ||
eb7c3adb JK |
1199 | /* strip the ethernet crc, problem is we're using pages now so |
1200 | * this whole operation can get a little cpu intensive | |
1201 | */ | |
1202 | if (!(adapter->flags2 & FLAG2_CRC_STRIPPING)) | |
1203 | pskb_trim(skb, skb->len - 4); | |
1204 | ||
bc7f75fa AK |
1205 | copydone: |
1206 | total_rx_bytes += skb->len; | |
1207 | total_rx_packets++; | |
1208 | ||
1209 | e1000_rx_checksum(adapter, staterr, le16_to_cpu( | |
1210 | rx_desc->wb.lower.hi_dword.csum_ip.csum), skb); | |
1211 | ||
1212 | if (rx_desc->wb.upper.header_status & | |
1213 | cpu_to_le16(E1000_RXDPS_HDRSTAT_HDRSP)) | |
1214 | adapter->rx_hdr_split++; | |
1215 | ||
1216 | e1000_receive_skb(adapter, netdev, skb, | |
1217 | staterr, rx_desc->wb.middle.vlan); | |
1218 | ||
1219 | next_desc: | |
1220 | rx_desc->wb.middle.status_error &= cpu_to_le32(~0xFF); | |
1221 | buffer_info->skb = NULL; | |
1222 | ||
1223 | /* return some buffers to hardware, one at a time is too slow */ | |
1224 | if (cleaned_count >= E1000_RX_BUFFER_WRITE) { | |
1225 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1226 | cleaned_count = 0; | |
1227 | } | |
1228 | ||
1229 | /* use prefetched values */ | |
1230 | rx_desc = next_rxd; | |
1231 | buffer_info = next_buffer; | |
1232 | ||
1233 | staterr = le32_to_cpu(rx_desc->wb.middle.status_error); | |
1234 | } | |
1235 | rx_ring->next_to_clean = i; | |
1236 | ||
1237 | cleaned_count = e1000_desc_unused(rx_ring); | |
1238 | if (cleaned_count) | |
1239 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1240 | ||
bc7f75fa | 1241 | adapter->total_rx_bytes += total_rx_bytes; |
7c25769f | 1242 | adapter->total_rx_packets += total_rx_packets; |
7274c20f AK |
1243 | netdev->stats.rx_bytes += total_rx_bytes; |
1244 | netdev->stats.rx_packets += total_rx_packets; | |
bc7f75fa AK |
1245 | return cleaned; |
1246 | } | |
1247 | ||
97ac8cae BA |
1248 | /** |
1249 | * e1000_consume_page - helper function | |
1250 | **/ | |
1251 | static void e1000_consume_page(struct e1000_buffer *bi, struct sk_buff *skb, | |
1252 | u16 length) | |
1253 | { | |
1254 | bi->page = NULL; | |
1255 | skb->len += length; | |
1256 | skb->data_len += length; | |
1257 | skb->truesize += length; | |
1258 | } | |
1259 | ||
1260 | /** | |
1261 | * e1000_clean_jumbo_rx_irq - Send received data up the network stack; legacy | |
1262 | * @adapter: board private structure | |
1263 | * | |
1264 | * the return value indicates whether actual cleaning was done, there | |
1265 | * is no guarantee that everything was cleaned | |
1266 | **/ | |
1267 | ||
1268 | static bool e1000_clean_jumbo_rx_irq(struct e1000_adapter *adapter, | |
1269 | int *work_done, int work_to_do) | |
1270 | { | |
1271 | struct net_device *netdev = adapter->netdev; | |
1272 | struct pci_dev *pdev = adapter->pdev; | |
1273 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1274 | struct e1000_rx_desc *rx_desc, *next_rxd; | |
1275 | struct e1000_buffer *buffer_info, *next_buffer; | |
1276 | u32 length; | |
1277 | unsigned int i; | |
1278 | int cleaned_count = 0; | |
1279 | bool cleaned = false; | |
1280 | unsigned int total_rx_bytes=0, total_rx_packets=0; | |
1281 | ||
1282 | i = rx_ring->next_to_clean; | |
1283 | rx_desc = E1000_RX_DESC(*rx_ring, i); | |
1284 | buffer_info = &rx_ring->buffer_info[i]; | |
1285 | ||
1286 | while (rx_desc->status & E1000_RXD_STAT_DD) { | |
1287 | struct sk_buff *skb; | |
1288 | u8 status; | |
1289 | ||
1290 | if (*work_done >= work_to_do) | |
1291 | break; | |
1292 | (*work_done)++; | |
2d0bb1c1 | 1293 | rmb(); /* read descriptor and rx_buffer_info after status DD */ |
97ac8cae BA |
1294 | |
1295 | status = rx_desc->status; | |
1296 | skb = buffer_info->skb; | |
1297 | buffer_info->skb = NULL; | |
1298 | ||
1299 | ++i; | |
1300 | if (i == rx_ring->count) | |
1301 | i = 0; | |
1302 | next_rxd = E1000_RX_DESC(*rx_ring, i); | |
1303 | prefetch(next_rxd); | |
1304 | ||
1305 | next_buffer = &rx_ring->buffer_info[i]; | |
1306 | ||
1307 | cleaned = true; | |
1308 | cleaned_count++; | |
0be3f55f NN |
1309 | dma_unmap_page(&pdev->dev, buffer_info->dma, PAGE_SIZE, |
1310 | DMA_FROM_DEVICE); | |
97ac8cae BA |
1311 | buffer_info->dma = 0; |
1312 | ||
1313 | length = le16_to_cpu(rx_desc->length); | |
1314 | ||
1315 | /* errors is only valid for DD + EOP descriptors */ | |
1316 | if (unlikely((status & E1000_RXD_STAT_EOP) && | |
1317 | (rx_desc->errors & E1000_RXD_ERR_FRAME_ERR_MASK))) { | |
1318 | /* recycle both page and skb */ | |
1319 | buffer_info->skb = skb; | |
1320 | /* an error means any chain goes out the window | |
1321 | * too */ | |
1322 | if (rx_ring->rx_skb_top) | |
1323 | dev_kfree_skb(rx_ring->rx_skb_top); | |
1324 | rx_ring->rx_skb_top = NULL; | |
1325 | goto next_desc; | |
1326 | } | |
1327 | ||
1328 | #define rxtop rx_ring->rx_skb_top | |
1329 | if (!(status & E1000_RXD_STAT_EOP)) { | |
1330 | /* this descriptor is only the beginning (or middle) */ | |
1331 | if (!rxtop) { | |
1332 | /* this is the beginning of a chain */ | |
1333 | rxtop = skb; | |
1334 | skb_fill_page_desc(rxtop, 0, buffer_info->page, | |
1335 | 0, length); | |
1336 | } else { | |
1337 | /* this is the middle of a chain */ | |
1338 | skb_fill_page_desc(rxtop, | |
1339 | skb_shinfo(rxtop)->nr_frags, | |
1340 | buffer_info->page, 0, length); | |
1341 | /* re-use the skb, only consumed the page */ | |
1342 | buffer_info->skb = skb; | |
1343 | } | |
1344 | e1000_consume_page(buffer_info, rxtop, length); | |
1345 | goto next_desc; | |
1346 | } else { | |
1347 | if (rxtop) { | |
1348 | /* end of the chain */ | |
1349 | skb_fill_page_desc(rxtop, | |
1350 | skb_shinfo(rxtop)->nr_frags, | |
1351 | buffer_info->page, 0, length); | |
1352 | /* re-use the current skb, we only consumed the | |
1353 | * page */ | |
1354 | buffer_info->skb = skb; | |
1355 | skb = rxtop; | |
1356 | rxtop = NULL; | |
1357 | e1000_consume_page(buffer_info, skb, length); | |
1358 | } else { | |
1359 | /* no chain, got EOP, this buf is the packet | |
1360 | * copybreak to save the put_page/alloc_page */ | |
1361 | if (length <= copybreak && | |
1362 | skb_tailroom(skb) >= length) { | |
1363 | u8 *vaddr; | |
1364 | vaddr = kmap_atomic(buffer_info->page, | |
1365 | KM_SKB_DATA_SOFTIRQ); | |
1366 | memcpy(skb_tail_pointer(skb), vaddr, | |
1367 | length); | |
1368 | kunmap_atomic(vaddr, | |
1369 | KM_SKB_DATA_SOFTIRQ); | |
1370 | /* re-use the page, so don't erase | |
1371 | * buffer_info->page */ | |
1372 | skb_put(skb, length); | |
1373 | } else { | |
1374 | skb_fill_page_desc(skb, 0, | |
1375 | buffer_info->page, 0, | |
1376 | length); | |
1377 | e1000_consume_page(buffer_info, skb, | |
1378 | length); | |
1379 | } | |
1380 | } | |
1381 | } | |
1382 | ||
1383 | /* Receive Checksum Offload XXX recompute due to CRC strip? */ | |
1384 | e1000_rx_checksum(adapter, | |
1385 | (u32)(status) | | |
1386 | ((u32)(rx_desc->errors) << 24), | |
1387 | le16_to_cpu(rx_desc->csum), skb); | |
1388 | ||
1389 | /* probably a little skewed due to removing CRC */ | |
1390 | total_rx_bytes += skb->len; | |
1391 | total_rx_packets++; | |
1392 | ||
1393 | /* eth type trans needs skb->data to point to something */ | |
1394 | if (!pskb_may_pull(skb, ETH_HLEN)) { | |
44defeb3 | 1395 | e_err("pskb_may_pull failed.\n"); |
97ac8cae BA |
1396 | dev_kfree_skb(skb); |
1397 | goto next_desc; | |
1398 | } | |
1399 | ||
1400 | e1000_receive_skb(adapter, netdev, skb, status, | |
1401 | rx_desc->special); | |
1402 | ||
1403 | next_desc: | |
1404 | rx_desc->status = 0; | |
1405 | ||
1406 | /* return some buffers to hardware, one at a time is too slow */ | |
1407 | if (unlikely(cleaned_count >= E1000_RX_BUFFER_WRITE)) { | |
1408 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1409 | cleaned_count = 0; | |
1410 | } | |
1411 | ||
1412 | /* use prefetched values */ | |
1413 | rx_desc = next_rxd; | |
1414 | buffer_info = next_buffer; | |
1415 | } | |
1416 | rx_ring->next_to_clean = i; | |
1417 | ||
1418 | cleaned_count = e1000_desc_unused(rx_ring); | |
1419 | if (cleaned_count) | |
1420 | adapter->alloc_rx_buf(adapter, cleaned_count); | |
1421 | ||
1422 | adapter->total_rx_bytes += total_rx_bytes; | |
1423 | adapter->total_rx_packets += total_rx_packets; | |
7274c20f AK |
1424 | netdev->stats.rx_bytes += total_rx_bytes; |
1425 | netdev->stats.rx_packets += total_rx_packets; | |
97ac8cae BA |
1426 | return cleaned; |
1427 | } | |
1428 | ||
bc7f75fa AK |
1429 | /** |
1430 | * e1000_clean_rx_ring - Free Rx Buffers per Queue | |
1431 | * @adapter: board private structure | |
1432 | **/ | |
1433 | static void e1000_clean_rx_ring(struct e1000_adapter *adapter) | |
1434 | { | |
1435 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1436 | struct e1000_buffer *buffer_info; | |
1437 | struct e1000_ps_page *ps_page; | |
1438 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
1439 | unsigned int i, j; |
1440 | ||
1441 | /* Free all the Rx ring sk_buffs */ | |
1442 | for (i = 0; i < rx_ring->count; i++) { | |
1443 | buffer_info = &rx_ring->buffer_info[i]; | |
1444 | if (buffer_info->dma) { | |
1445 | if (adapter->clean_rx == e1000_clean_rx_irq) | |
0be3f55f | 1446 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
bc7f75fa | 1447 | adapter->rx_buffer_len, |
0be3f55f | 1448 | DMA_FROM_DEVICE); |
97ac8cae | 1449 | else if (adapter->clean_rx == e1000_clean_jumbo_rx_irq) |
0be3f55f | 1450 | dma_unmap_page(&pdev->dev, buffer_info->dma, |
97ac8cae | 1451 | PAGE_SIZE, |
0be3f55f | 1452 | DMA_FROM_DEVICE); |
bc7f75fa | 1453 | else if (adapter->clean_rx == e1000_clean_rx_irq_ps) |
0be3f55f | 1454 | dma_unmap_single(&pdev->dev, buffer_info->dma, |
bc7f75fa | 1455 | adapter->rx_ps_bsize0, |
0be3f55f | 1456 | DMA_FROM_DEVICE); |
bc7f75fa AK |
1457 | buffer_info->dma = 0; |
1458 | } | |
1459 | ||
97ac8cae BA |
1460 | if (buffer_info->page) { |
1461 | put_page(buffer_info->page); | |
1462 | buffer_info->page = NULL; | |
1463 | } | |
1464 | ||
bc7f75fa AK |
1465 | if (buffer_info->skb) { |
1466 | dev_kfree_skb(buffer_info->skb); | |
1467 | buffer_info->skb = NULL; | |
1468 | } | |
1469 | ||
1470 | for (j = 0; j < PS_PAGE_BUFFERS; j++) { | |
47f44e40 | 1471 | ps_page = &buffer_info->ps_pages[j]; |
bc7f75fa AK |
1472 | if (!ps_page->page) |
1473 | break; | |
0be3f55f NN |
1474 | dma_unmap_page(&pdev->dev, ps_page->dma, PAGE_SIZE, |
1475 | DMA_FROM_DEVICE); | |
bc7f75fa AK |
1476 | ps_page->dma = 0; |
1477 | put_page(ps_page->page); | |
1478 | ps_page->page = NULL; | |
1479 | } | |
1480 | } | |
1481 | ||
1482 | /* there also may be some cached data from a chained receive */ | |
1483 | if (rx_ring->rx_skb_top) { | |
1484 | dev_kfree_skb(rx_ring->rx_skb_top); | |
1485 | rx_ring->rx_skb_top = NULL; | |
1486 | } | |
1487 | ||
bc7f75fa AK |
1488 | /* Zero out the descriptor ring */ |
1489 | memset(rx_ring->desc, 0, rx_ring->size); | |
1490 | ||
1491 | rx_ring->next_to_clean = 0; | |
1492 | rx_ring->next_to_use = 0; | |
b94b5028 | 1493 | adapter->flags2 &= ~FLAG2_IS_DISCARDING; |
bc7f75fa AK |
1494 | |
1495 | writel(0, adapter->hw.hw_addr + rx_ring->head); | |
1496 | writel(0, adapter->hw.hw_addr + rx_ring->tail); | |
1497 | } | |
1498 | ||
a8f88ff5 JB |
1499 | static void e1000e_downshift_workaround(struct work_struct *work) |
1500 | { | |
1501 | struct e1000_adapter *adapter = container_of(work, | |
1502 | struct e1000_adapter, downshift_task); | |
1503 | ||
1504 | e1000e_gig_downshift_workaround_ich8lan(&adapter->hw); | |
1505 | } | |
1506 | ||
bc7f75fa AK |
1507 | /** |
1508 | * e1000_intr_msi - Interrupt Handler | |
1509 | * @irq: interrupt number | |
1510 | * @data: pointer to a network interface device structure | |
1511 | **/ | |
1512 | static irqreturn_t e1000_intr_msi(int irq, void *data) | |
1513 | { | |
1514 | struct net_device *netdev = data; | |
1515 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1516 | struct e1000_hw *hw = &adapter->hw; | |
1517 | u32 icr = er32(ICR); | |
1518 | ||
ad68076e BA |
1519 | /* |
1520 | * read ICR disables interrupts using IAM | |
1521 | */ | |
bc7f75fa | 1522 | |
573cca8c | 1523 | if (icr & E1000_ICR_LSC) { |
bc7f75fa | 1524 | hw->mac.get_link_status = 1; |
ad68076e BA |
1525 | /* |
1526 | * ICH8 workaround-- Call gig speed drop workaround on cable | |
1527 | * disconnect (LSC) before accessing any PHY registers | |
1528 | */ | |
bc7f75fa AK |
1529 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1530 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1531 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1532 | |
ad68076e BA |
1533 | /* |
1534 | * 80003ES2LAN workaround-- For packet buffer work-around on | |
bc7f75fa | 1535 | * link down event; disable receives here in the ISR and reset |
ad68076e BA |
1536 | * adapter in watchdog |
1537 | */ | |
bc7f75fa AK |
1538 | if (netif_carrier_ok(netdev) && |
1539 | adapter->flags & FLAG_RX_NEEDS_RESTART) { | |
1540 | /* disable receives */ | |
1541 | u32 rctl = er32(RCTL); | |
1542 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
318a94d6 | 1543 | adapter->flags |= FLAG_RX_RESTART_NOW; |
bc7f75fa AK |
1544 | } |
1545 | /* guard against interrupt when we're going down */ | |
1546 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1547 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1548 | } | |
1549 | ||
288379f0 | 1550 | if (napi_schedule_prep(&adapter->napi)) { |
bc7f75fa AK |
1551 | adapter->total_tx_bytes = 0; |
1552 | adapter->total_tx_packets = 0; | |
1553 | adapter->total_rx_bytes = 0; | |
1554 | adapter->total_rx_packets = 0; | |
288379f0 | 1555 | __napi_schedule(&adapter->napi); |
bc7f75fa AK |
1556 | } |
1557 | ||
1558 | return IRQ_HANDLED; | |
1559 | } | |
1560 | ||
1561 | /** | |
1562 | * e1000_intr - Interrupt Handler | |
1563 | * @irq: interrupt number | |
1564 | * @data: pointer to a network interface device structure | |
1565 | **/ | |
1566 | static irqreturn_t e1000_intr(int irq, void *data) | |
1567 | { | |
1568 | struct net_device *netdev = data; | |
1569 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1570 | struct e1000_hw *hw = &adapter->hw; | |
bc7f75fa | 1571 | u32 rctl, icr = er32(ICR); |
4662e82b | 1572 | |
a68ea775 | 1573 | if (!icr || test_bit(__E1000_DOWN, &adapter->state)) |
bc7f75fa AK |
1574 | return IRQ_NONE; /* Not our interrupt */ |
1575 | ||
ad68076e BA |
1576 | /* |
1577 | * IMS will not auto-mask if INT_ASSERTED is not set, and if it is | |
1578 | * not set, then the adapter didn't send an interrupt | |
1579 | */ | |
bc7f75fa AK |
1580 | if (!(icr & E1000_ICR_INT_ASSERTED)) |
1581 | return IRQ_NONE; | |
1582 | ||
ad68076e BA |
1583 | /* |
1584 | * Interrupt Auto-Mask...upon reading ICR, | |
1585 | * interrupts are masked. No need for the | |
1586 | * IMC write | |
1587 | */ | |
bc7f75fa | 1588 | |
573cca8c | 1589 | if (icr & E1000_ICR_LSC) { |
bc7f75fa | 1590 | hw->mac.get_link_status = 1; |
ad68076e BA |
1591 | /* |
1592 | * ICH8 workaround-- Call gig speed drop workaround on cable | |
1593 | * disconnect (LSC) before accessing any PHY registers | |
1594 | */ | |
bc7f75fa AK |
1595 | if ((adapter->flags & FLAG_LSC_GIG_SPEED_DROP) && |
1596 | (!(er32(STATUS) & E1000_STATUS_LU))) | |
a8f88ff5 | 1597 | schedule_work(&adapter->downshift_task); |
bc7f75fa | 1598 | |
ad68076e BA |
1599 | /* |
1600 | * 80003ES2LAN workaround-- | |
bc7f75fa AK |
1601 | * For packet buffer work-around on link down event; |
1602 | * disable receives here in the ISR and | |
1603 | * reset adapter in watchdog | |
1604 | */ | |
1605 | if (netif_carrier_ok(netdev) && | |
1606 | (adapter->flags & FLAG_RX_NEEDS_RESTART)) { | |
1607 | /* disable receives */ | |
1608 | rctl = er32(RCTL); | |
1609 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
318a94d6 | 1610 | adapter->flags |= FLAG_RX_RESTART_NOW; |
bc7f75fa AK |
1611 | } |
1612 | /* guard against interrupt when we're going down */ | |
1613 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1614 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1615 | } | |
1616 | ||
288379f0 | 1617 | if (napi_schedule_prep(&adapter->napi)) { |
bc7f75fa AK |
1618 | adapter->total_tx_bytes = 0; |
1619 | adapter->total_tx_packets = 0; | |
1620 | adapter->total_rx_bytes = 0; | |
1621 | adapter->total_rx_packets = 0; | |
288379f0 | 1622 | __napi_schedule(&adapter->napi); |
bc7f75fa AK |
1623 | } |
1624 | ||
1625 | return IRQ_HANDLED; | |
1626 | } | |
1627 | ||
4662e82b BA |
1628 | static irqreturn_t e1000_msix_other(int irq, void *data) |
1629 | { | |
1630 | struct net_device *netdev = data; | |
1631 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1632 | struct e1000_hw *hw = &adapter->hw; | |
1633 | u32 icr = er32(ICR); | |
1634 | ||
1635 | if (!(icr & E1000_ICR_INT_ASSERTED)) { | |
a3c69fef JB |
1636 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
1637 | ew32(IMS, E1000_IMS_OTHER); | |
4662e82b BA |
1638 | return IRQ_NONE; |
1639 | } | |
1640 | ||
1641 | if (icr & adapter->eiac_mask) | |
1642 | ew32(ICS, (icr & adapter->eiac_mask)); | |
1643 | ||
1644 | if (icr & E1000_ICR_OTHER) { | |
1645 | if (!(icr & E1000_ICR_LSC)) | |
1646 | goto no_link_interrupt; | |
1647 | hw->mac.get_link_status = 1; | |
1648 | /* guard against interrupt when we're going down */ | |
1649 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
1650 | mod_timer(&adapter->watchdog_timer, jiffies + 1); | |
1651 | } | |
1652 | ||
1653 | no_link_interrupt: | |
a3c69fef JB |
1654 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
1655 | ew32(IMS, E1000_IMS_LSC | E1000_IMS_OTHER); | |
4662e82b BA |
1656 | |
1657 | return IRQ_HANDLED; | |
1658 | } | |
1659 | ||
1660 | ||
1661 | static irqreturn_t e1000_intr_msix_tx(int irq, void *data) | |
1662 | { | |
1663 | struct net_device *netdev = data; | |
1664 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1665 | struct e1000_hw *hw = &adapter->hw; | |
1666 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1667 | ||
1668 | ||
1669 | adapter->total_tx_bytes = 0; | |
1670 | adapter->total_tx_packets = 0; | |
1671 | ||
1672 | if (!e1000_clean_tx_irq(adapter)) | |
1673 | /* Ring was not completely cleaned, so fire another interrupt */ | |
1674 | ew32(ICS, tx_ring->ims_val); | |
1675 | ||
1676 | return IRQ_HANDLED; | |
1677 | } | |
1678 | ||
1679 | static irqreturn_t e1000_intr_msix_rx(int irq, void *data) | |
1680 | { | |
1681 | struct net_device *netdev = data; | |
1682 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
1683 | ||
1684 | /* Write the ITR value calculated at the end of the | |
1685 | * previous interrupt. | |
1686 | */ | |
1687 | if (adapter->rx_ring->set_itr) { | |
1688 | writel(1000000000 / (adapter->rx_ring->itr_val * 256), | |
1689 | adapter->hw.hw_addr + adapter->rx_ring->itr_register); | |
1690 | adapter->rx_ring->set_itr = 0; | |
1691 | } | |
1692 | ||
288379f0 | 1693 | if (napi_schedule_prep(&adapter->napi)) { |
4662e82b BA |
1694 | adapter->total_rx_bytes = 0; |
1695 | adapter->total_rx_packets = 0; | |
288379f0 | 1696 | __napi_schedule(&adapter->napi); |
4662e82b BA |
1697 | } |
1698 | return IRQ_HANDLED; | |
1699 | } | |
1700 | ||
1701 | /** | |
1702 | * e1000_configure_msix - Configure MSI-X hardware | |
1703 | * | |
1704 | * e1000_configure_msix sets up the hardware to properly | |
1705 | * generate MSI-X interrupts. | |
1706 | **/ | |
1707 | static void e1000_configure_msix(struct e1000_adapter *adapter) | |
1708 | { | |
1709 | struct e1000_hw *hw = &adapter->hw; | |
1710 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
1711 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
1712 | int vector = 0; | |
1713 | u32 ctrl_ext, ivar = 0; | |
1714 | ||
1715 | adapter->eiac_mask = 0; | |
1716 | ||
1717 | /* Workaround issue with spurious interrupts on 82574 in MSI-X mode */ | |
1718 | if (hw->mac.type == e1000_82574) { | |
1719 | u32 rfctl = er32(RFCTL); | |
1720 | rfctl |= E1000_RFCTL_ACK_DIS; | |
1721 | ew32(RFCTL, rfctl); | |
1722 | } | |
1723 | ||
1724 | #define E1000_IVAR_INT_ALLOC_VALID 0x8 | |
1725 | /* Configure Rx vector */ | |
1726 | rx_ring->ims_val = E1000_IMS_RXQ0; | |
1727 | adapter->eiac_mask |= rx_ring->ims_val; | |
1728 | if (rx_ring->itr_val) | |
1729 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1730 | hw->hw_addr + rx_ring->itr_register); | |
1731 | else | |
1732 | writel(1, hw->hw_addr + rx_ring->itr_register); | |
1733 | ivar = E1000_IVAR_INT_ALLOC_VALID | vector; | |
1734 | ||
1735 | /* Configure Tx vector */ | |
1736 | tx_ring->ims_val = E1000_IMS_TXQ0; | |
1737 | vector++; | |
1738 | if (tx_ring->itr_val) | |
1739 | writel(1000000000 / (tx_ring->itr_val * 256), | |
1740 | hw->hw_addr + tx_ring->itr_register); | |
1741 | else | |
1742 | writel(1, hw->hw_addr + tx_ring->itr_register); | |
1743 | adapter->eiac_mask |= tx_ring->ims_val; | |
1744 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 8); | |
1745 | ||
1746 | /* set vector for Other Causes, e.g. link changes */ | |
1747 | vector++; | |
1748 | ivar |= ((E1000_IVAR_INT_ALLOC_VALID | vector) << 16); | |
1749 | if (rx_ring->itr_val) | |
1750 | writel(1000000000 / (rx_ring->itr_val * 256), | |
1751 | hw->hw_addr + E1000_EITR_82574(vector)); | |
1752 | else | |
1753 | writel(1, hw->hw_addr + E1000_EITR_82574(vector)); | |
1754 | ||
1755 | /* Cause Tx interrupts on every write back */ | |
1756 | ivar |= (1 << 31); | |
1757 | ||
1758 | ew32(IVAR, ivar); | |
1759 | ||
1760 | /* enable MSI-X PBA support */ | |
1761 | ctrl_ext = er32(CTRL_EXT); | |
1762 | ctrl_ext |= E1000_CTRL_EXT_PBA_CLR; | |
1763 | ||
1764 | /* Auto-Mask Other interrupts upon ICR read */ | |
1765 | #define E1000_EIAC_MASK_82574 0x01F00000 | |
1766 | ew32(IAM, ~E1000_EIAC_MASK_82574 | E1000_IMS_OTHER); | |
1767 | ctrl_ext |= E1000_CTRL_EXT_EIAME; | |
1768 | ew32(CTRL_EXT, ctrl_ext); | |
1769 | e1e_flush(); | |
1770 | } | |
1771 | ||
1772 | void e1000e_reset_interrupt_capability(struct e1000_adapter *adapter) | |
1773 | { | |
1774 | if (adapter->msix_entries) { | |
1775 | pci_disable_msix(adapter->pdev); | |
1776 | kfree(adapter->msix_entries); | |
1777 | adapter->msix_entries = NULL; | |
1778 | } else if (adapter->flags & FLAG_MSI_ENABLED) { | |
1779 | pci_disable_msi(adapter->pdev); | |
1780 | adapter->flags &= ~FLAG_MSI_ENABLED; | |
1781 | } | |
4662e82b BA |
1782 | } |
1783 | ||
1784 | /** | |
1785 | * e1000e_set_interrupt_capability - set MSI or MSI-X if supported | |
1786 | * | |
1787 | * Attempt to configure interrupts using the best available | |
1788 | * capabilities of the hardware and kernel. | |
1789 | **/ | |
1790 | void e1000e_set_interrupt_capability(struct e1000_adapter *adapter) | |
1791 | { | |
1792 | int err; | |
8e86acd7 | 1793 | int i; |
4662e82b BA |
1794 | |
1795 | switch (adapter->int_mode) { | |
1796 | case E1000E_INT_MODE_MSIX: | |
1797 | if (adapter->flags & FLAG_HAS_MSIX) { | |
8e86acd7 JK |
1798 | adapter->num_vectors = 3; /* RxQ0, TxQ0 and other */ |
1799 | adapter->msix_entries = kcalloc(adapter->num_vectors, | |
4662e82b BA |
1800 | sizeof(struct msix_entry), |
1801 | GFP_KERNEL); | |
1802 | if (adapter->msix_entries) { | |
8e86acd7 | 1803 | for (i = 0; i < adapter->num_vectors; i++) |
4662e82b BA |
1804 | adapter->msix_entries[i].entry = i; |
1805 | ||
1806 | err = pci_enable_msix(adapter->pdev, | |
1807 | adapter->msix_entries, | |
8e86acd7 JK |
1808 | adapter->num_vectors); |
1809 | if (err == 0) { | |
4662e82b | 1810 | return; |
8e86acd7 | 1811 | } |
4662e82b BA |
1812 | } |
1813 | /* MSI-X failed, so fall through and try MSI */ | |
1814 | e_err("Failed to initialize MSI-X interrupts. " | |
1815 | "Falling back to MSI interrupts.\n"); | |
1816 | e1000e_reset_interrupt_capability(adapter); | |
1817 | } | |
1818 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
1819 | /* Fall through */ | |
1820 | case E1000E_INT_MODE_MSI: | |
1821 | if (!pci_enable_msi(adapter->pdev)) { | |
1822 | adapter->flags |= FLAG_MSI_ENABLED; | |
1823 | } else { | |
1824 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
1825 | e_err("Failed to initialize MSI interrupts. Falling " | |
1826 | "back to legacy interrupts.\n"); | |
1827 | } | |
1828 | /* Fall through */ | |
1829 | case E1000E_INT_MODE_LEGACY: | |
1830 | /* Don't do anything; this is the system default */ | |
1831 | break; | |
1832 | } | |
8e86acd7 JK |
1833 | |
1834 | /* store the number of vectors being used */ | |
1835 | adapter->num_vectors = 1; | |
4662e82b BA |
1836 | } |
1837 | ||
1838 | /** | |
1839 | * e1000_request_msix - Initialize MSI-X interrupts | |
1840 | * | |
1841 | * e1000_request_msix allocates MSI-X vectors and requests interrupts from the | |
1842 | * kernel. | |
1843 | **/ | |
1844 | static int e1000_request_msix(struct e1000_adapter *adapter) | |
1845 | { | |
1846 | struct net_device *netdev = adapter->netdev; | |
1847 | int err = 0, vector = 0; | |
1848 | ||
1849 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
cb7b48f6 | 1850 | sprintf(adapter->rx_ring->name, "%s-rx-0", netdev->name); |
4662e82b BA |
1851 | else |
1852 | memcpy(adapter->rx_ring->name, netdev->name, IFNAMSIZ); | |
1853 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1854 | e1000_intr_msix_rx, 0, adapter->rx_ring->name, |
4662e82b BA |
1855 | netdev); |
1856 | if (err) | |
1857 | goto out; | |
1858 | adapter->rx_ring->itr_register = E1000_EITR_82574(vector); | |
1859 | adapter->rx_ring->itr_val = adapter->itr; | |
1860 | vector++; | |
1861 | ||
1862 | if (strlen(netdev->name) < (IFNAMSIZ - 5)) | |
cb7b48f6 | 1863 | sprintf(adapter->tx_ring->name, "%s-tx-0", netdev->name); |
4662e82b BA |
1864 | else |
1865 | memcpy(adapter->tx_ring->name, netdev->name, IFNAMSIZ); | |
1866 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1867 | e1000_intr_msix_tx, 0, adapter->tx_ring->name, |
4662e82b BA |
1868 | netdev); |
1869 | if (err) | |
1870 | goto out; | |
1871 | adapter->tx_ring->itr_register = E1000_EITR_82574(vector); | |
1872 | adapter->tx_ring->itr_val = adapter->itr; | |
1873 | vector++; | |
1874 | ||
1875 | err = request_irq(adapter->msix_entries[vector].vector, | |
a0607fd3 | 1876 | e1000_msix_other, 0, netdev->name, netdev); |
4662e82b BA |
1877 | if (err) |
1878 | goto out; | |
1879 | ||
1880 | e1000_configure_msix(adapter); | |
1881 | return 0; | |
1882 | out: | |
1883 | return err; | |
1884 | } | |
1885 | ||
f8d59f78 BA |
1886 | /** |
1887 | * e1000_request_irq - initialize interrupts | |
1888 | * | |
1889 | * Attempts to configure interrupts using the best available | |
1890 | * capabilities of the hardware and kernel. | |
1891 | **/ | |
bc7f75fa AK |
1892 | static int e1000_request_irq(struct e1000_adapter *adapter) |
1893 | { | |
1894 | struct net_device *netdev = adapter->netdev; | |
bc7f75fa AK |
1895 | int err; |
1896 | ||
4662e82b BA |
1897 | if (adapter->msix_entries) { |
1898 | err = e1000_request_msix(adapter); | |
1899 | if (!err) | |
1900 | return err; | |
1901 | /* fall back to MSI */ | |
1902 | e1000e_reset_interrupt_capability(adapter); | |
1903 | adapter->int_mode = E1000E_INT_MODE_MSI; | |
1904 | e1000e_set_interrupt_capability(adapter); | |
bc7f75fa | 1905 | } |
4662e82b | 1906 | if (adapter->flags & FLAG_MSI_ENABLED) { |
a0607fd3 | 1907 | err = request_irq(adapter->pdev->irq, e1000_intr_msi, 0, |
4662e82b BA |
1908 | netdev->name, netdev); |
1909 | if (!err) | |
1910 | return err; | |
bc7f75fa | 1911 | |
4662e82b BA |
1912 | /* fall back to legacy interrupt */ |
1913 | e1000e_reset_interrupt_capability(adapter); | |
1914 | adapter->int_mode = E1000E_INT_MODE_LEGACY; | |
bc7f75fa AK |
1915 | } |
1916 | ||
a0607fd3 | 1917 | err = request_irq(adapter->pdev->irq, e1000_intr, IRQF_SHARED, |
4662e82b BA |
1918 | netdev->name, netdev); |
1919 | if (err) | |
1920 | e_err("Unable to allocate interrupt, Error: %d\n", err); | |
1921 | ||
bc7f75fa AK |
1922 | return err; |
1923 | } | |
1924 | ||
1925 | static void e1000_free_irq(struct e1000_adapter *adapter) | |
1926 | { | |
1927 | struct net_device *netdev = adapter->netdev; | |
1928 | ||
4662e82b BA |
1929 | if (adapter->msix_entries) { |
1930 | int vector = 0; | |
1931 | ||
1932 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1933 | vector++; | |
1934 | ||
1935 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1936 | vector++; | |
1937 | ||
1938 | /* Other Causes interrupt vector */ | |
1939 | free_irq(adapter->msix_entries[vector].vector, netdev); | |
1940 | return; | |
bc7f75fa | 1941 | } |
4662e82b BA |
1942 | |
1943 | free_irq(adapter->pdev->irq, netdev); | |
bc7f75fa AK |
1944 | } |
1945 | ||
1946 | /** | |
1947 | * e1000_irq_disable - Mask off interrupt generation on the NIC | |
1948 | **/ | |
1949 | static void e1000_irq_disable(struct e1000_adapter *adapter) | |
1950 | { | |
1951 | struct e1000_hw *hw = &adapter->hw; | |
1952 | ||
bc7f75fa | 1953 | ew32(IMC, ~0); |
4662e82b BA |
1954 | if (adapter->msix_entries) |
1955 | ew32(EIAC_82574, 0); | |
bc7f75fa | 1956 | e1e_flush(); |
8e86acd7 JK |
1957 | |
1958 | if (adapter->msix_entries) { | |
1959 | int i; | |
1960 | for (i = 0; i < adapter->num_vectors; i++) | |
1961 | synchronize_irq(adapter->msix_entries[i].vector); | |
1962 | } else { | |
1963 | synchronize_irq(adapter->pdev->irq); | |
1964 | } | |
bc7f75fa AK |
1965 | } |
1966 | ||
1967 | /** | |
1968 | * e1000_irq_enable - Enable default interrupt generation settings | |
1969 | **/ | |
1970 | static void e1000_irq_enable(struct e1000_adapter *adapter) | |
1971 | { | |
1972 | struct e1000_hw *hw = &adapter->hw; | |
1973 | ||
4662e82b BA |
1974 | if (adapter->msix_entries) { |
1975 | ew32(EIAC_82574, adapter->eiac_mask & E1000_EIAC_MASK_82574); | |
1976 | ew32(IMS, adapter->eiac_mask | E1000_IMS_OTHER | E1000_IMS_LSC); | |
1977 | } else { | |
1978 | ew32(IMS, IMS_ENABLE_MASK); | |
1979 | } | |
74ef9c39 | 1980 | e1e_flush(); |
bc7f75fa AK |
1981 | } |
1982 | ||
1983 | /** | |
1984 | * e1000_get_hw_control - get control of the h/w from f/w | |
1985 | * @adapter: address of board private structure | |
1986 | * | |
489815ce | 1987 | * e1000_get_hw_control sets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
1988 | * For ASF and Pass Through versions of f/w this means that |
1989 | * the driver is loaded. For AMT version (only with 82573) | |
1990 | * of the f/w this means that the network i/f is open. | |
1991 | **/ | |
1992 | static void e1000_get_hw_control(struct e1000_adapter *adapter) | |
1993 | { | |
1994 | struct e1000_hw *hw = &adapter->hw; | |
1995 | u32 ctrl_ext; | |
1996 | u32 swsm; | |
1997 | ||
1998 | /* Let firmware know the driver has taken over */ | |
1999 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
2000 | swsm = er32(SWSM); | |
2001 | ew32(SWSM, swsm | E1000_SWSM_DRV_LOAD); | |
2002 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
2003 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 2004 | ew32(CTRL_EXT, ctrl_ext | E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
2005 | } |
2006 | } | |
2007 | ||
2008 | /** | |
2009 | * e1000_release_hw_control - release control of the h/w to f/w | |
2010 | * @adapter: address of board private structure | |
2011 | * | |
489815ce | 2012 | * e1000_release_hw_control resets {CTRL_EXT|SWSM}:DRV_LOAD bit. |
bc7f75fa AK |
2013 | * For ASF and Pass Through versions of f/w this means that the |
2014 | * driver is no longer loaded. For AMT version (only with 82573) i | |
2015 | * of the f/w this means that the network i/f is closed. | |
2016 | * | |
2017 | **/ | |
2018 | static void e1000_release_hw_control(struct e1000_adapter *adapter) | |
2019 | { | |
2020 | struct e1000_hw *hw = &adapter->hw; | |
2021 | u32 ctrl_ext; | |
2022 | u32 swsm; | |
2023 | ||
2024 | /* Let firmware taken over control of h/w */ | |
2025 | if (adapter->flags & FLAG_HAS_SWSM_ON_LOAD) { | |
2026 | swsm = er32(SWSM); | |
2027 | ew32(SWSM, swsm & ~E1000_SWSM_DRV_LOAD); | |
2028 | } else if (adapter->flags & FLAG_HAS_CTRLEXT_ON_LOAD) { | |
2029 | ctrl_ext = er32(CTRL_EXT); | |
ad68076e | 2030 | ew32(CTRL_EXT, ctrl_ext & ~E1000_CTRL_EXT_DRV_LOAD); |
bc7f75fa AK |
2031 | } |
2032 | } | |
2033 | ||
bc7f75fa AK |
2034 | /** |
2035 | * @e1000_alloc_ring - allocate memory for a ring structure | |
2036 | **/ | |
2037 | static int e1000_alloc_ring_dma(struct e1000_adapter *adapter, | |
2038 | struct e1000_ring *ring) | |
2039 | { | |
2040 | struct pci_dev *pdev = adapter->pdev; | |
2041 | ||
2042 | ring->desc = dma_alloc_coherent(&pdev->dev, ring->size, &ring->dma, | |
2043 | GFP_KERNEL); | |
2044 | if (!ring->desc) | |
2045 | return -ENOMEM; | |
2046 | ||
2047 | return 0; | |
2048 | } | |
2049 | ||
2050 | /** | |
2051 | * e1000e_setup_tx_resources - allocate Tx resources (Descriptors) | |
2052 | * @adapter: board private structure | |
2053 | * | |
2054 | * Return 0 on success, negative on failure | |
2055 | **/ | |
2056 | int e1000e_setup_tx_resources(struct e1000_adapter *adapter) | |
2057 | { | |
2058 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2059 | int err = -ENOMEM, size; | |
2060 | ||
2061 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2062 | tx_ring->buffer_info = vmalloc(size); | |
2063 | if (!tx_ring->buffer_info) | |
2064 | goto err; | |
2065 | memset(tx_ring->buffer_info, 0, size); | |
2066 | ||
2067 | /* round up to nearest 4K */ | |
2068 | tx_ring->size = tx_ring->count * sizeof(struct e1000_tx_desc); | |
2069 | tx_ring->size = ALIGN(tx_ring->size, 4096); | |
2070 | ||
2071 | err = e1000_alloc_ring_dma(adapter, tx_ring); | |
2072 | if (err) | |
2073 | goto err; | |
2074 | ||
2075 | tx_ring->next_to_use = 0; | |
2076 | tx_ring->next_to_clean = 0; | |
bc7f75fa AK |
2077 | |
2078 | return 0; | |
2079 | err: | |
2080 | vfree(tx_ring->buffer_info); | |
44defeb3 | 2081 | e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
bc7f75fa AK |
2082 | return err; |
2083 | } | |
2084 | ||
2085 | /** | |
2086 | * e1000e_setup_rx_resources - allocate Rx resources (Descriptors) | |
2087 | * @adapter: board private structure | |
2088 | * | |
2089 | * Returns 0 on success, negative on failure | |
2090 | **/ | |
2091 | int e1000e_setup_rx_resources(struct e1000_adapter *adapter) | |
2092 | { | |
2093 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
47f44e40 AK |
2094 | struct e1000_buffer *buffer_info; |
2095 | int i, size, desc_len, err = -ENOMEM; | |
bc7f75fa AK |
2096 | |
2097 | size = sizeof(struct e1000_buffer) * rx_ring->count; | |
2098 | rx_ring->buffer_info = vmalloc(size); | |
2099 | if (!rx_ring->buffer_info) | |
2100 | goto err; | |
2101 | memset(rx_ring->buffer_info, 0, size); | |
2102 | ||
47f44e40 AK |
2103 | for (i = 0; i < rx_ring->count; i++) { |
2104 | buffer_info = &rx_ring->buffer_info[i]; | |
2105 | buffer_info->ps_pages = kcalloc(PS_PAGE_BUFFERS, | |
2106 | sizeof(struct e1000_ps_page), | |
2107 | GFP_KERNEL); | |
2108 | if (!buffer_info->ps_pages) | |
2109 | goto err_pages; | |
2110 | } | |
bc7f75fa AK |
2111 | |
2112 | desc_len = sizeof(union e1000_rx_desc_packet_split); | |
2113 | ||
2114 | /* Round up to nearest 4K */ | |
2115 | rx_ring->size = rx_ring->count * desc_len; | |
2116 | rx_ring->size = ALIGN(rx_ring->size, 4096); | |
2117 | ||
2118 | err = e1000_alloc_ring_dma(adapter, rx_ring); | |
2119 | if (err) | |
47f44e40 | 2120 | goto err_pages; |
bc7f75fa AK |
2121 | |
2122 | rx_ring->next_to_clean = 0; | |
2123 | rx_ring->next_to_use = 0; | |
2124 | rx_ring->rx_skb_top = NULL; | |
2125 | ||
2126 | return 0; | |
47f44e40 AK |
2127 | |
2128 | err_pages: | |
2129 | for (i = 0; i < rx_ring->count; i++) { | |
2130 | buffer_info = &rx_ring->buffer_info[i]; | |
2131 | kfree(buffer_info->ps_pages); | |
2132 | } | |
bc7f75fa AK |
2133 | err: |
2134 | vfree(rx_ring->buffer_info); | |
44defeb3 | 2135 | e_err("Unable to allocate memory for the transmit descriptor ring\n"); |
bc7f75fa AK |
2136 | return err; |
2137 | } | |
2138 | ||
2139 | /** | |
2140 | * e1000_clean_tx_ring - Free Tx Buffers | |
2141 | * @adapter: board private structure | |
2142 | **/ | |
2143 | static void e1000_clean_tx_ring(struct e1000_adapter *adapter) | |
2144 | { | |
2145 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2146 | struct e1000_buffer *buffer_info; | |
2147 | unsigned long size; | |
2148 | unsigned int i; | |
2149 | ||
2150 | for (i = 0; i < tx_ring->count; i++) { | |
2151 | buffer_info = &tx_ring->buffer_info[i]; | |
2152 | e1000_put_txbuf(adapter, buffer_info); | |
2153 | } | |
2154 | ||
2155 | size = sizeof(struct e1000_buffer) * tx_ring->count; | |
2156 | memset(tx_ring->buffer_info, 0, size); | |
2157 | ||
2158 | memset(tx_ring->desc, 0, tx_ring->size); | |
2159 | ||
2160 | tx_ring->next_to_use = 0; | |
2161 | tx_ring->next_to_clean = 0; | |
2162 | ||
2163 | writel(0, adapter->hw.hw_addr + tx_ring->head); | |
2164 | writel(0, adapter->hw.hw_addr + tx_ring->tail); | |
2165 | } | |
2166 | ||
2167 | /** | |
2168 | * e1000e_free_tx_resources - Free Tx Resources per Queue | |
2169 | * @adapter: board private structure | |
2170 | * | |
2171 | * Free all transmit software resources | |
2172 | **/ | |
2173 | void e1000e_free_tx_resources(struct e1000_adapter *adapter) | |
2174 | { | |
2175 | struct pci_dev *pdev = adapter->pdev; | |
2176 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2177 | ||
2178 | e1000_clean_tx_ring(adapter); | |
2179 | ||
2180 | vfree(tx_ring->buffer_info); | |
2181 | tx_ring->buffer_info = NULL; | |
2182 | ||
2183 | dma_free_coherent(&pdev->dev, tx_ring->size, tx_ring->desc, | |
2184 | tx_ring->dma); | |
2185 | tx_ring->desc = NULL; | |
2186 | } | |
2187 | ||
2188 | /** | |
2189 | * e1000e_free_rx_resources - Free Rx Resources | |
2190 | * @adapter: board private structure | |
2191 | * | |
2192 | * Free all receive software resources | |
2193 | **/ | |
2194 | ||
2195 | void e1000e_free_rx_resources(struct e1000_adapter *adapter) | |
2196 | { | |
2197 | struct pci_dev *pdev = adapter->pdev; | |
2198 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
47f44e40 | 2199 | int i; |
bc7f75fa AK |
2200 | |
2201 | e1000_clean_rx_ring(adapter); | |
2202 | ||
47f44e40 AK |
2203 | for (i = 0; i < rx_ring->count; i++) { |
2204 | kfree(rx_ring->buffer_info[i].ps_pages); | |
2205 | } | |
2206 | ||
bc7f75fa AK |
2207 | vfree(rx_ring->buffer_info); |
2208 | rx_ring->buffer_info = NULL; | |
2209 | ||
bc7f75fa AK |
2210 | dma_free_coherent(&pdev->dev, rx_ring->size, rx_ring->desc, |
2211 | rx_ring->dma); | |
2212 | rx_ring->desc = NULL; | |
2213 | } | |
2214 | ||
2215 | /** | |
2216 | * e1000_update_itr - update the dynamic ITR value based on statistics | |
489815ce AK |
2217 | * @adapter: pointer to adapter |
2218 | * @itr_setting: current adapter->itr | |
2219 | * @packets: the number of packets during this measurement interval | |
2220 | * @bytes: the number of bytes during this measurement interval | |
2221 | * | |
bc7f75fa AK |
2222 | * Stores a new ITR value based on packets and byte |
2223 | * counts during the last interrupt. The advantage of per interrupt | |
2224 | * computation is faster updates and more accurate ITR for the current | |
2225 | * traffic pattern. Constants in this function were computed | |
2226 | * based on theoretical maximum wire speed and thresholds were set based | |
2227 | * on testing data as well as attempting to minimize response time | |
4662e82b BA |
2228 | * while increasing bulk throughput. This functionality is controlled |
2229 | * by the InterruptThrottleRate module parameter. | |
bc7f75fa AK |
2230 | **/ |
2231 | static unsigned int e1000_update_itr(struct e1000_adapter *adapter, | |
2232 | u16 itr_setting, int packets, | |
2233 | int bytes) | |
2234 | { | |
2235 | unsigned int retval = itr_setting; | |
2236 | ||
2237 | if (packets == 0) | |
2238 | goto update_itr_done; | |
2239 | ||
2240 | switch (itr_setting) { | |
2241 | case lowest_latency: | |
2242 | /* handle TSO and jumbo frames */ | |
2243 | if (bytes/packets > 8000) | |
2244 | retval = bulk_latency; | |
2245 | else if ((packets < 5) && (bytes > 512)) { | |
2246 | retval = low_latency; | |
2247 | } | |
2248 | break; | |
2249 | case low_latency: /* 50 usec aka 20000 ints/s */ | |
2250 | if (bytes > 10000) { | |
2251 | /* this if handles the TSO accounting */ | |
2252 | if (bytes/packets > 8000) { | |
2253 | retval = bulk_latency; | |
2254 | } else if ((packets < 10) || ((bytes/packets) > 1200)) { | |
2255 | retval = bulk_latency; | |
2256 | } else if ((packets > 35)) { | |
2257 | retval = lowest_latency; | |
2258 | } | |
2259 | } else if (bytes/packets > 2000) { | |
2260 | retval = bulk_latency; | |
2261 | } else if (packets <= 2 && bytes < 512) { | |
2262 | retval = lowest_latency; | |
2263 | } | |
2264 | break; | |
2265 | case bulk_latency: /* 250 usec aka 4000 ints/s */ | |
2266 | if (bytes > 25000) { | |
2267 | if (packets > 35) { | |
2268 | retval = low_latency; | |
2269 | } | |
2270 | } else if (bytes < 6000) { | |
2271 | retval = low_latency; | |
2272 | } | |
2273 | break; | |
2274 | } | |
2275 | ||
2276 | update_itr_done: | |
2277 | return retval; | |
2278 | } | |
2279 | ||
2280 | static void e1000_set_itr(struct e1000_adapter *adapter) | |
2281 | { | |
2282 | struct e1000_hw *hw = &adapter->hw; | |
2283 | u16 current_itr; | |
2284 | u32 new_itr = adapter->itr; | |
2285 | ||
2286 | /* for non-gigabit speeds, just fix the interrupt rate at 4000 */ | |
2287 | if (adapter->link_speed != SPEED_1000) { | |
2288 | current_itr = 0; | |
2289 | new_itr = 4000; | |
2290 | goto set_itr_now; | |
2291 | } | |
2292 | ||
2293 | adapter->tx_itr = e1000_update_itr(adapter, | |
2294 | adapter->tx_itr, | |
2295 | adapter->total_tx_packets, | |
2296 | adapter->total_tx_bytes); | |
2297 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
2298 | if (adapter->itr_setting == 3 && adapter->tx_itr == lowest_latency) | |
2299 | adapter->tx_itr = low_latency; | |
2300 | ||
2301 | adapter->rx_itr = e1000_update_itr(adapter, | |
2302 | adapter->rx_itr, | |
2303 | adapter->total_rx_packets, | |
2304 | adapter->total_rx_bytes); | |
2305 | /* conservative mode (itr 3) eliminates the lowest_latency setting */ | |
2306 | if (adapter->itr_setting == 3 && adapter->rx_itr == lowest_latency) | |
2307 | adapter->rx_itr = low_latency; | |
2308 | ||
2309 | current_itr = max(adapter->rx_itr, adapter->tx_itr); | |
2310 | ||
2311 | switch (current_itr) { | |
2312 | /* counts and packets in update_itr are dependent on these numbers */ | |
2313 | case lowest_latency: | |
2314 | new_itr = 70000; | |
2315 | break; | |
2316 | case low_latency: | |
2317 | new_itr = 20000; /* aka hwitr = ~200 */ | |
2318 | break; | |
2319 | case bulk_latency: | |
2320 | new_itr = 4000; | |
2321 | break; | |
2322 | default: | |
2323 | break; | |
2324 | } | |
2325 | ||
2326 | set_itr_now: | |
2327 | if (new_itr != adapter->itr) { | |
ad68076e BA |
2328 | /* |
2329 | * this attempts to bias the interrupt rate towards Bulk | |
bc7f75fa | 2330 | * by adding intermediate steps when interrupt rate is |
ad68076e BA |
2331 | * increasing |
2332 | */ | |
bc7f75fa AK |
2333 | new_itr = new_itr > adapter->itr ? |
2334 | min(adapter->itr + (new_itr >> 2), new_itr) : | |
2335 | new_itr; | |
2336 | adapter->itr = new_itr; | |
4662e82b BA |
2337 | adapter->rx_ring->itr_val = new_itr; |
2338 | if (adapter->msix_entries) | |
2339 | adapter->rx_ring->set_itr = 1; | |
2340 | else | |
2341 | ew32(ITR, 1000000000 / (new_itr * 256)); | |
bc7f75fa AK |
2342 | } |
2343 | } | |
2344 | ||
4662e82b BA |
2345 | /** |
2346 | * e1000_alloc_queues - Allocate memory for all rings | |
2347 | * @adapter: board private structure to initialize | |
2348 | **/ | |
2349 | static int __devinit e1000_alloc_queues(struct e1000_adapter *adapter) | |
2350 | { | |
2351 | adapter->tx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); | |
2352 | if (!adapter->tx_ring) | |
2353 | goto err; | |
2354 | ||
2355 | adapter->rx_ring = kzalloc(sizeof(struct e1000_ring), GFP_KERNEL); | |
2356 | if (!adapter->rx_ring) | |
2357 | goto err; | |
2358 | ||
2359 | return 0; | |
2360 | err: | |
2361 | e_err("Unable to allocate memory for queues\n"); | |
2362 | kfree(adapter->rx_ring); | |
2363 | kfree(adapter->tx_ring); | |
2364 | return -ENOMEM; | |
2365 | } | |
2366 | ||
bc7f75fa AK |
2367 | /** |
2368 | * e1000_clean - NAPI Rx polling callback | |
ad68076e | 2369 | * @napi: struct associated with this polling callback |
489815ce | 2370 | * @budget: amount of packets driver is allowed to process this poll |
bc7f75fa AK |
2371 | **/ |
2372 | static int e1000_clean(struct napi_struct *napi, int budget) | |
2373 | { | |
2374 | struct e1000_adapter *adapter = container_of(napi, struct e1000_adapter, napi); | |
4662e82b | 2375 | struct e1000_hw *hw = &adapter->hw; |
bc7f75fa | 2376 | struct net_device *poll_dev = adapter->netdev; |
679e8a0f | 2377 | int tx_cleaned = 1, work_done = 0; |
bc7f75fa | 2378 | |
4cf1653a | 2379 | adapter = netdev_priv(poll_dev); |
bc7f75fa | 2380 | |
4662e82b BA |
2381 | if (adapter->msix_entries && |
2382 | !(adapter->rx_ring->ims_val & adapter->tx_ring->ims_val)) | |
2383 | goto clean_rx; | |
2384 | ||
92af3e95 | 2385 | tx_cleaned = e1000_clean_tx_irq(adapter); |
bc7f75fa | 2386 | |
4662e82b | 2387 | clean_rx: |
bc7f75fa | 2388 | adapter->clean_rx(adapter, &work_done, budget); |
d2c7ddd6 | 2389 | |
12d04a3c | 2390 | if (!tx_cleaned) |
d2c7ddd6 | 2391 | work_done = budget; |
bc7f75fa | 2392 | |
53e52c72 DM |
2393 | /* If budget not fully consumed, exit the polling mode */ |
2394 | if (work_done < budget) { | |
bc7f75fa AK |
2395 | if (adapter->itr_setting & 3) |
2396 | e1000_set_itr(adapter); | |
288379f0 | 2397 | napi_complete(napi); |
a3c69fef JB |
2398 | if (!test_bit(__E1000_DOWN, &adapter->state)) { |
2399 | if (adapter->msix_entries) | |
2400 | ew32(IMS, adapter->rx_ring->ims_val); | |
2401 | else | |
2402 | e1000_irq_enable(adapter); | |
2403 | } | |
bc7f75fa AK |
2404 | } |
2405 | ||
2406 | return work_done; | |
2407 | } | |
2408 | ||
2409 | static void e1000_vlan_rx_add_vid(struct net_device *netdev, u16 vid) | |
2410 | { | |
2411 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2412 | struct e1000_hw *hw = &adapter->hw; | |
2413 | u32 vfta, index; | |
2414 | ||
2415 | /* don't update vlan cookie if already programmed */ | |
2416 | if ((adapter->hw.mng_cookie.status & | |
2417 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2418 | (vid == adapter->mng_vlan_id)) | |
2419 | return; | |
caaddaf8 | 2420 | |
bc7f75fa | 2421 | /* add VID to filter table */ |
caaddaf8 BA |
2422 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2423 | index = (vid >> 5) & 0x7F; | |
2424 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2425 | vfta |= (1 << (vid & 0x1F)); | |
2426 | hw->mac.ops.write_vfta(hw, index, vfta); | |
2427 | } | |
bc7f75fa AK |
2428 | } |
2429 | ||
2430 | static void e1000_vlan_rx_kill_vid(struct net_device *netdev, u16 vid) | |
2431 | { | |
2432 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2433 | struct e1000_hw *hw = &adapter->hw; | |
2434 | u32 vfta, index; | |
2435 | ||
74ef9c39 JB |
2436 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2437 | e1000_irq_disable(adapter); | |
bc7f75fa | 2438 | vlan_group_set_device(adapter->vlgrp, vid, NULL); |
74ef9c39 JB |
2439 | |
2440 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
2441 | e1000_irq_enable(adapter); | |
bc7f75fa AK |
2442 | |
2443 | if ((adapter->hw.mng_cookie.status & | |
2444 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
2445 | (vid == adapter->mng_vlan_id)) { | |
2446 | /* release control to f/w */ | |
2447 | e1000_release_hw_control(adapter); | |
2448 | return; | |
2449 | } | |
2450 | ||
2451 | /* remove VID from filter table */ | |
caaddaf8 BA |
2452 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { |
2453 | index = (vid >> 5) & 0x7F; | |
2454 | vfta = E1000_READ_REG_ARRAY(hw, E1000_VFTA, index); | |
2455 | vfta &= ~(1 << (vid & 0x1F)); | |
2456 | hw->mac.ops.write_vfta(hw, index, vfta); | |
2457 | } | |
bc7f75fa AK |
2458 | } |
2459 | ||
2460 | static void e1000_update_mng_vlan(struct e1000_adapter *adapter) | |
2461 | { | |
2462 | struct net_device *netdev = adapter->netdev; | |
2463 | u16 vid = adapter->hw.mng_cookie.vlan_id; | |
2464 | u16 old_vid = adapter->mng_vlan_id; | |
2465 | ||
2466 | if (!adapter->vlgrp) | |
2467 | return; | |
2468 | ||
2469 | if (!vlan_group_get_device(adapter->vlgrp, vid)) { | |
2470 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
2471 | if (adapter->hw.mng_cookie.status & | |
2472 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) { | |
2473 | e1000_vlan_rx_add_vid(netdev, vid); | |
2474 | adapter->mng_vlan_id = vid; | |
2475 | } | |
2476 | ||
2477 | if ((old_vid != (u16)E1000_MNG_VLAN_NONE) && | |
2478 | (vid != old_vid) && | |
2479 | !vlan_group_get_device(adapter->vlgrp, old_vid)) | |
2480 | e1000_vlan_rx_kill_vid(netdev, old_vid); | |
2481 | } else { | |
2482 | adapter->mng_vlan_id = vid; | |
2483 | } | |
2484 | } | |
2485 | ||
2486 | ||
2487 | static void e1000_vlan_rx_register(struct net_device *netdev, | |
2488 | struct vlan_group *grp) | |
2489 | { | |
2490 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2491 | struct e1000_hw *hw = &adapter->hw; | |
2492 | u32 ctrl, rctl; | |
2493 | ||
74ef9c39 JB |
2494 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2495 | e1000_irq_disable(adapter); | |
bc7f75fa AK |
2496 | adapter->vlgrp = grp; |
2497 | ||
2498 | if (grp) { | |
2499 | /* enable VLAN tag insert/strip */ | |
2500 | ctrl = er32(CTRL); | |
2501 | ctrl |= E1000_CTRL_VME; | |
2502 | ew32(CTRL, ctrl); | |
2503 | ||
2504 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
2505 | /* enable VLAN receive filtering */ | |
2506 | rctl = er32(RCTL); | |
bc7f75fa AK |
2507 | rctl &= ~E1000_RCTL_CFIEN; |
2508 | ew32(RCTL, rctl); | |
2509 | e1000_update_mng_vlan(adapter); | |
2510 | } | |
2511 | } else { | |
2512 | /* disable VLAN tag insert/strip */ | |
2513 | ctrl = er32(CTRL); | |
2514 | ctrl &= ~E1000_CTRL_VME; | |
2515 | ew32(CTRL, ctrl); | |
2516 | ||
2517 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) { | |
bc7f75fa AK |
2518 | if (adapter->mng_vlan_id != |
2519 | (u16)E1000_MNG_VLAN_NONE) { | |
2520 | e1000_vlan_rx_kill_vid(netdev, | |
2521 | adapter->mng_vlan_id); | |
2522 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
2523 | } | |
2524 | } | |
2525 | } | |
2526 | ||
74ef9c39 JB |
2527 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
2528 | e1000_irq_enable(adapter); | |
bc7f75fa AK |
2529 | } |
2530 | ||
2531 | static void e1000_restore_vlan(struct e1000_adapter *adapter) | |
2532 | { | |
2533 | u16 vid; | |
2534 | ||
2535 | e1000_vlan_rx_register(adapter->netdev, adapter->vlgrp); | |
2536 | ||
2537 | if (!adapter->vlgrp) | |
2538 | return; | |
2539 | ||
2540 | for (vid = 0; vid < VLAN_GROUP_ARRAY_LEN; vid++) { | |
2541 | if (!vlan_group_get_device(adapter->vlgrp, vid)) | |
2542 | continue; | |
2543 | e1000_vlan_rx_add_vid(adapter->netdev, vid); | |
2544 | } | |
2545 | } | |
2546 | ||
cd791618 | 2547 | static void e1000_init_manageability_pt(struct e1000_adapter *adapter) |
bc7f75fa AK |
2548 | { |
2549 | struct e1000_hw *hw = &adapter->hw; | |
cd791618 | 2550 | u32 manc, manc2h, mdef, i, j; |
bc7f75fa AK |
2551 | |
2552 | if (!(adapter->flags & FLAG_MNG_PT_ENABLED)) | |
2553 | return; | |
2554 | ||
2555 | manc = er32(MANC); | |
2556 | ||
ad68076e BA |
2557 | /* |
2558 | * enable receiving management packets to the host. this will probably | |
bc7f75fa | 2559 | * generate destination unreachable messages from the host OS, but |
ad68076e BA |
2560 | * the packets will be handled on SMBUS |
2561 | */ | |
bc7f75fa AK |
2562 | manc |= E1000_MANC_EN_MNG2HOST; |
2563 | manc2h = er32(MANC2H); | |
cd791618 BA |
2564 | |
2565 | switch (hw->mac.type) { | |
2566 | default: | |
2567 | manc2h |= (E1000_MANC2H_PORT_623 | E1000_MANC2H_PORT_664); | |
2568 | break; | |
2569 | case e1000_82574: | |
2570 | case e1000_82583: | |
2571 | /* | |
2572 | * Check if IPMI pass-through decision filter already exists; | |
2573 | * if so, enable it. | |
2574 | */ | |
2575 | for (i = 0, j = 0; i < 8; i++) { | |
2576 | mdef = er32(MDEF(i)); | |
2577 | ||
2578 | /* Ignore filters with anything other than IPMI ports */ | |
3b21b508 | 2579 | if (mdef & ~(E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) |
cd791618 BA |
2580 | continue; |
2581 | ||
2582 | /* Enable this decision filter in MANC2H */ | |
2583 | if (mdef) | |
2584 | manc2h |= (1 << i); | |
2585 | ||
2586 | j |= mdef; | |
2587 | } | |
2588 | ||
2589 | if (j == (E1000_MDEF_PORT_623 | E1000_MDEF_PORT_664)) | |
2590 | break; | |
2591 | ||
2592 | /* Create new decision filter in an empty filter */ | |
2593 | for (i = 0, j = 0; i < 8; i++) | |
2594 | if (er32(MDEF(i)) == 0) { | |
2595 | ew32(MDEF(i), (E1000_MDEF_PORT_623 | | |
2596 | E1000_MDEF_PORT_664)); | |
2597 | manc2h |= (1 << 1); | |
2598 | j++; | |
2599 | break; | |
2600 | } | |
2601 | ||
2602 | if (!j) | |
2603 | e_warn("Unable to create IPMI pass-through filter\n"); | |
2604 | break; | |
2605 | } | |
2606 | ||
bc7f75fa AK |
2607 | ew32(MANC2H, manc2h); |
2608 | ew32(MANC, manc); | |
2609 | } | |
2610 | ||
2611 | /** | |
2612 | * e1000_configure_tx - Configure 8254x Transmit Unit after Reset | |
2613 | * @adapter: board private structure | |
2614 | * | |
2615 | * Configure the Tx unit of the MAC after a reset. | |
2616 | **/ | |
2617 | static void e1000_configure_tx(struct e1000_adapter *adapter) | |
2618 | { | |
2619 | struct e1000_hw *hw = &adapter->hw; | |
2620 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
2621 | u64 tdba; | |
2622 | u32 tdlen, tctl, tipg, tarc; | |
2623 | u32 ipgr1, ipgr2; | |
2624 | ||
2625 | /* Setup the HW Tx Head and Tail descriptor pointers */ | |
2626 | tdba = tx_ring->dma; | |
2627 | tdlen = tx_ring->count * sizeof(struct e1000_tx_desc); | |
284901a9 | 2628 | ew32(TDBAL, (tdba & DMA_BIT_MASK(32))); |
bc7f75fa AK |
2629 | ew32(TDBAH, (tdba >> 32)); |
2630 | ew32(TDLEN, tdlen); | |
2631 | ew32(TDH, 0); | |
2632 | ew32(TDT, 0); | |
2633 | tx_ring->head = E1000_TDH; | |
2634 | tx_ring->tail = E1000_TDT; | |
2635 | ||
2636 | /* Set the default values for the Tx Inter Packet Gap timer */ | |
2637 | tipg = DEFAULT_82543_TIPG_IPGT_COPPER; /* 8 */ | |
2638 | ipgr1 = DEFAULT_82543_TIPG_IPGR1; /* 8 */ | |
2639 | ipgr2 = DEFAULT_82543_TIPG_IPGR2; /* 6 */ | |
2640 | ||
2641 | if (adapter->flags & FLAG_TIPG_MEDIUM_FOR_80003ESLAN) | |
2642 | ipgr2 = DEFAULT_80003ES2LAN_TIPG_IPGR2; /* 7 */ | |
2643 | ||
2644 | tipg |= ipgr1 << E1000_TIPG_IPGR1_SHIFT; | |
2645 | tipg |= ipgr2 << E1000_TIPG_IPGR2_SHIFT; | |
2646 | ew32(TIPG, tipg); | |
2647 | ||
2648 | /* Set the Tx Interrupt Delay register */ | |
2649 | ew32(TIDV, adapter->tx_int_delay); | |
ad68076e | 2650 | /* Tx irq moderation */ |
bc7f75fa AK |
2651 | ew32(TADV, adapter->tx_abs_int_delay); |
2652 | ||
2653 | /* Program the Transmit Control Register */ | |
2654 | tctl = er32(TCTL); | |
2655 | tctl &= ~E1000_TCTL_CT; | |
2656 | tctl |= E1000_TCTL_PSP | E1000_TCTL_RTLC | | |
2657 | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); | |
2658 | ||
2659 | if (adapter->flags & FLAG_TARC_SPEED_MODE_BIT) { | |
e9ec2c0f | 2660 | tarc = er32(TARC(0)); |
ad68076e BA |
2661 | /* |
2662 | * set the speed mode bit, we'll clear it if we're not at | |
2663 | * gigabit link later | |
2664 | */ | |
bc7f75fa AK |
2665 | #define SPEED_MODE_BIT (1 << 21) |
2666 | tarc |= SPEED_MODE_BIT; | |
e9ec2c0f | 2667 | ew32(TARC(0), tarc); |
bc7f75fa AK |
2668 | } |
2669 | ||
2670 | /* errata: program both queues to unweighted RR */ | |
2671 | if (adapter->flags & FLAG_TARC_SET_BIT_ZERO) { | |
e9ec2c0f | 2672 | tarc = er32(TARC(0)); |
bc7f75fa | 2673 | tarc |= 1; |
e9ec2c0f JK |
2674 | ew32(TARC(0), tarc); |
2675 | tarc = er32(TARC(1)); | |
bc7f75fa | 2676 | tarc |= 1; |
e9ec2c0f | 2677 | ew32(TARC(1), tarc); |
bc7f75fa AK |
2678 | } |
2679 | ||
bc7f75fa AK |
2680 | /* Setup Transmit Descriptor Settings for eop descriptor */ |
2681 | adapter->txd_cmd = E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS; | |
2682 | ||
2683 | /* only set IDE if we are delaying interrupts using the timers */ | |
2684 | if (adapter->tx_int_delay) | |
2685 | adapter->txd_cmd |= E1000_TXD_CMD_IDE; | |
2686 | ||
2687 | /* enable Report Status bit */ | |
2688 | adapter->txd_cmd |= E1000_TXD_CMD_RS; | |
2689 | ||
2690 | ew32(TCTL, tctl); | |
2691 | ||
edfea6e6 | 2692 | e1000e_config_collision_dist(hw); |
bc7f75fa AK |
2693 | } |
2694 | ||
2695 | /** | |
2696 | * e1000_setup_rctl - configure the receive control registers | |
2697 | * @adapter: Board private structure | |
2698 | **/ | |
2699 | #define PAGE_USE_COUNT(S) (((S) >> PAGE_SHIFT) + \ | |
2700 | (((S) & (PAGE_SIZE - 1)) ? 1 : 0)) | |
2701 | static void e1000_setup_rctl(struct e1000_adapter *adapter) | |
2702 | { | |
2703 | struct e1000_hw *hw = &adapter->hw; | |
2704 | u32 rctl, rfctl; | |
2705 | u32 psrctl = 0; | |
2706 | u32 pages = 0; | |
2707 | ||
2708 | /* Program MC offset vector base */ | |
2709 | rctl = er32(RCTL); | |
2710 | rctl &= ~(3 << E1000_RCTL_MO_SHIFT); | |
2711 | rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | | |
2712 | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF | | |
2713 | (adapter->hw.mac.mc_filter_type << E1000_RCTL_MO_SHIFT); | |
2714 | ||
2715 | /* Do not Store bad packets */ | |
2716 | rctl &= ~E1000_RCTL_SBP; | |
2717 | ||
2718 | /* Enable Long Packet receive */ | |
2719 | if (adapter->netdev->mtu <= ETH_DATA_LEN) | |
2720 | rctl &= ~E1000_RCTL_LPE; | |
2721 | else | |
2722 | rctl |= E1000_RCTL_LPE; | |
2723 | ||
eb7c3adb JK |
2724 | /* Some systems expect that the CRC is included in SMBUS traffic. The |
2725 | * hardware strips the CRC before sending to both SMBUS (BMC) and to | |
2726 | * host memory when this is enabled | |
2727 | */ | |
2728 | if (adapter->flags2 & FLAG2_CRC_STRIPPING) | |
2729 | rctl |= E1000_RCTL_SECRC; | |
5918bd88 | 2730 | |
a4f58f54 BA |
2731 | /* Workaround Si errata on 82577 PHY - configure IPG for jumbos */ |
2732 | if ((hw->phy.type == e1000_phy_82577) && (rctl & E1000_RCTL_LPE)) { | |
2733 | u16 phy_data; | |
2734 | ||
2735 | e1e_rphy(hw, PHY_REG(770, 26), &phy_data); | |
2736 | phy_data &= 0xfff8; | |
2737 | phy_data |= (1 << 2); | |
2738 | e1e_wphy(hw, PHY_REG(770, 26), phy_data); | |
2739 | ||
2740 | e1e_rphy(hw, 22, &phy_data); | |
2741 | phy_data &= 0x0fff; | |
2742 | phy_data |= (1 << 14); | |
2743 | e1e_wphy(hw, 0x10, 0x2823); | |
2744 | e1e_wphy(hw, 0x11, 0x0003); | |
2745 | e1e_wphy(hw, 22, phy_data); | |
2746 | } | |
2747 | ||
d3738bb8 BA |
2748 | /* Workaround Si errata on 82579 - configure jumbo frame flow */ |
2749 | if (hw->mac.type == e1000_pch2lan) { | |
2750 | s32 ret_val; | |
2751 | ||
2752 | if (rctl & E1000_RCTL_LPE) | |
2753 | ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, true); | |
2754 | else | |
2755 | ret_val = e1000_lv_jumbo_workaround_ich8lan(hw, false); | |
2756 | } | |
2757 | ||
bc7f75fa AK |
2758 | /* Setup buffer sizes */ |
2759 | rctl &= ~E1000_RCTL_SZ_4096; | |
2760 | rctl |= E1000_RCTL_BSEX; | |
2761 | switch (adapter->rx_buffer_len) { | |
bc7f75fa AK |
2762 | case 2048: |
2763 | default: | |
2764 | rctl |= E1000_RCTL_SZ_2048; | |
2765 | rctl &= ~E1000_RCTL_BSEX; | |
2766 | break; | |
2767 | case 4096: | |
2768 | rctl |= E1000_RCTL_SZ_4096; | |
2769 | break; | |
2770 | case 8192: | |
2771 | rctl |= E1000_RCTL_SZ_8192; | |
2772 | break; | |
2773 | case 16384: | |
2774 | rctl |= E1000_RCTL_SZ_16384; | |
2775 | break; | |
2776 | } | |
2777 | ||
2778 | /* | |
2779 | * 82571 and greater support packet-split where the protocol | |
2780 | * header is placed in skb->data and the packet data is | |
2781 | * placed in pages hanging off of skb_shinfo(skb)->nr_frags. | |
2782 | * In the case of a non-split, skb->data is linearly filled, | |
2783 | * followed by the page buffers. Therefore, skb->data is | |
2784 | * sized to hold the largest protocol header. | |
2785 | * | |
2786 | * allocations using alloc_page take too long for regular MTU | |
2787 | * so only enable packet split for jumbo frames | |
2788 | * | |
2789 | * Using pages when the page size is greater than 16k wastes | |
2790 | * a lot of memory, since we allocate 3 pages at all times | |
2791 | * per packet. | |
2792 | */ | |
bc7f75fa | 2793 | pages = PAGE_USE_COUNT(adapter->netdev->mtu); |
dbcb9fec | 2794 | if (!(adapter->flags & FLAG_HAS_ERT) && (pages <= 3) && |
97ac8cae | 2795 | (PAGE_SIZE <= 16384) && (rctl & E1000_RCTL_LPE)) |
bc7f75fa | 2796 | adapter->rx_ps_pages = pages; |
97ac8cae BA |
2797 | else |
2798 | adapter->rx_ps_pages = 0; | |
bc7f75fa AK |
2799 | |
2800 | if (adapter->rx_ps_pages) { | |
2801 | /* Configure extra packet-split registers */ | |
2802 | rfctl = er32(RFCTL); | |
2803 | rfctl |= E1000_RFCTL_EXTEN; | |
ad68076e BA |
2804 | /* |
2805 | * disable packet split support for IPv6 extension headers, | |
2806 | * because some malformed IPv6 headers can hang the Rx | |
2807 | */ | |
bc7f75fa AK |
2808 | rfctl |= (E1000_RFCTL_IPV6_EX_DIS | |
2809 | E1000_RFCTL_NEW_IPV6_EXT_DIS); | |
2810 | ||
2811 | ew32(RFCTL, rfctl); | |
2812 | ||
140a7480 AK |
2813 | /* Enable Packet split descriptors */ |
2814 | rctl |= E1000_RCTL_DTYP_PS; | |
bc7f75fa AK |
2815 | |
2816 | psrctl |= adapter->rx_ps_bsize0 >> | |
2817 | E1000_PSRCTL_BSIZE0_SHIFT; | |
2818 | ||
2819 | switch (adapter->rx_ps_pages) { | |
2820 | case 3: | |
2821 | psrctl |= PAGE_SIZE << | |
2822 | E1000_PSRCTL_BSIZE3_SHIFT; | |
2823 | case 2: | |
2824 | psrctl |= PAGE_SIZE << | |
2825 | E1000_PSRCTL_BSIZE2_SHIFT; | |
2826 | case 1: | |
2827 | psrctl |= PAGE_SIZE >> | |
2828 | E1000_PSRCTL_BSIZE1_SHIFT; | |
2829 | break; | |
2830 | } | |
2831 | ||
2832 | ew32(PSRCTL, psrctl); | |
2833 | } | |
2834 | ||
2835 | ew32(RCTL, rctl); | |
318a94d6 JK |
2836 | /* just started the receive unit, no need to restart */ |
2837 | adapter->flags &= ~FLAG_RX_RESTART_NOW; | |
bc7f75fa AK |
2838 | } |
2839 | ||
2840 | /** | |
2841 | * e1000_configure_rx - Configure Receive Unit after Reset | |
2842 | * @adapter: board private structure | |
2843 | * | |
2844 | * Configure the Rx unit of the MAC after a reset. | |
2845 | **/ | |
2846 | static void e1000_configure_rx(struct e1000_adapter *adapter) | |
2847 | { | |
2848 | struct e1000_hw *hw = &adapter->hw; | |
2849 | struct e1000_ring *rx_ring = adapter->rx_ring; | |
2850 | u64 rdba; | |
2851 | u32 rdlen, rctl, rxcsum, ctrl_ext; | |
2852 | ||
2853 | if (adapter->rx_ps_pages) { | |
2854 | /* this is a 32 byte descriptor */ | |
2855 | rdlen = rx_ring->count * | |
2856 | sizeof(union e1000_rx_desc_packet_split); | |
2857 | adapter->clean_rx = e1000_clean_rx_irq_ps; | |
2858 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers_ps; | |
97ac8cae BA |
2859 | } else if (adapter->netdev->mtu > ETH_FRAME_LEN + ETH_FCS_LEN) { |
2860 | rdlen = rx_ring->count * sizeof(struct e1000_rx_desc); | |
2861 | adapter->clean_rx = e1000_clean_jumbo_rx_irq; | |
2862 | adapter->alloc_rx_buf = e1000_alloc_jumbo_rx_buffers; | |
bc7f75fa | 2863 | } else { |
97ac8cae | 2864 | rdlen = rx_ring->count * sizeof(struct e1000_rx_desc); |
bc7f75fa AK |
2865 | adapter->clean_rx = e1000_clean_rx_irq; |
2866 | adapter->alloc_rx_buf = e1000_alloc_rx_buffers; | |
2867 | } | |
2868 | ||
2869 | /* disable receives while setting up the descriptors */ | |
2870 | rctl = er32(RCTL); | |
2871 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
2872 | e1e_flush(); | |
2873 | msleep(10); | |
2874 | ||
2875 | /* set the Receive Delay Timer Register */ | |
2876 | ew32(RDTR, adapter->rx_int_delay); | |
2877 | ||
2878 | /* irq moderation */ | |
2879 | ew32(RADV, adapter->rx_abs_int_delay); | |
2880 | if (adapter->itr_setting != 0) | |
ad68076e | 2881 | ew32(ITR, 1000000000 / (adapter->itr * 256)); |
bc7f75fa AK |
2882 | |
2883 | ctrl_ext = er32(CTRL_EXT); | |
bc7f75fa AK |
2884 | /* Auto-Mask interrupts upon ICR access */ |
2885 | ctrl_ext |= E1000_CTRL_EXT_IAME; | |
2886 | ew32(IAM, 0xffffffff); | |
2887 | ew32(CTRL_EXT, ctrl_ext); | |
2888 | e1e_flush(); | |
2889 | ||
ad68076e BA |
2890 | /* |
2891 | * Setup the HW Rx Head and Tail Descriptor Pointers and | |
2892 | * the Base and Length of the Rx Descriptor Ring | |
2893 | */ | |
bc7f75fa | 2894 | rdba = rx_ring->dma; |
284901a9 | 2895 | ew32(RDBAL, (rdba & DMA_BIT_MASK(32))); |
bc7f75fa AK |
2896 | ew32(RDBAH, (rdba >> 32)); |
2897 | ew32(RDLEN, rdlen); | |
2898 | ew32(RDH, 0); | |
2899 | ew32(RDT, 0); | |
2900 | rx_ring->head = E1000_RDH; | |
2901 | rx_ring->tail = E1000_RDT; | |
2902 | ||
2903 | /* Enable Receive Checksum Offload for TCP and UDP */ | |
2904 | rxcsum = er32(RXCSUM); | |
2905 | if (adapter->flags & FLAG_RX_CSUM_ENABLED) { | |
2906 | rxcsum |= E1000_RXCSUM_TUOFL; | |
2907 | ||
ad68076e BA |
2908 | /* |
2909 | * IPv4 payload checksum for UDP fragments must be | |
2910 | * used in conjunction with packet-split. | |
2911 | */ | |
bc7f75fa AK |
2912 | if (adapter->rx_ps_pages) |
2913 | rxcsum |= E1000_RXCSUM_IPPCSE; | |
2914 | } else { | |
2915 | rxcsum &= ~E1000_RXCSUM_TUOFL; | |
2916 | /* no need to clear IPPCSE as it defaults to 0 */ | |
2917 | } | |
2918 | ew32(RXCSUM, rxcsum); | |
2919 | ||
ad68076e BA |
2920 | /* |
2921 | * Enable early receives on supported devices, only takes effect when | |
bc7f75fa | 2922 | * packet size is equal or larger than the specified value (in 8 byte |
ad68076e BA |
2923 | * units), e.g. using jumbo frames when setting to E1000_ERT_2048 |
2924 | */ | |
53ec5498 BA |
2925 | if (adapter->flags & FLAG_HAS_ERT) { |
2926 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
2927 | u32 rxdctl = er32(RXDCTL(0)); | |
2928 | ew32(RXDCTL(0), rxdctl | 0x3); | |
2929 | ew32(ERT, E1000_ERT_2048 | (1 << 13)); | |
2930 | /* | |
2931 | * With jumbo frames and early-receive enabled, | |
2932 | * excessive C-state transition latencies result in | |
2933 | * dropped transactions. | |
2934 | */ | |
ed77134b | 2935 | pm_qos_update_request( |
82f68251 | 2936 | &adapter->netdev->pm_qos_req, 55); |
53ec5498 | 2937 | } else { |
ed77134b | 2938 | pm_qos_update_request( |
82f68251 | 2939 | &adapter->netdev->pm_qos_req, |
ed77134b | 2940 | PM_QOS_DEFAULT_VALUE); |
53ec5498 | 2941 | } |
97ac8cae | 2942 | } |
bc7f75fa AK |
2943 | |
2944 | /* Enable Receives */ | |
2945 | ew32(RCTL, rctl); | |
2946 | } | |
2947 | ||
2948 | /** | |
e2de3eb6 | 2949 | * e1000_update_mc_addr_list - Update Multicast addresses |
bc7f75fa AK |
2950 | * @hw: pointer to the HW structure |
2951 | * @mc_addr_list: array of multicast addresses to program | |
2952 | * @mc_addr_count: number of multicast addresses to program | |
bc7f75fa | 2953 | * |
ab8932f3 | 2954 | * Updates the Multicast Table Array. |
bc7f75fa | 2955 | * The caller must have a packed mc_addr_list of multicast addresses. |
bc7f75fa | 2956 | **/ |
e2de3eb6 | 2957 | static void e1000_update_mc_addr_list(struct e1000_hw *hw, u8 *mc_addr_list, |
ab8932f3 | 2958 | u32 mc_addr_count) |
bc7f75fa | 2959 | { |
ab8932f3 | 2960 | hw->mac.ops.update_mc_addr_list(hw, mc_addr_list, mc_addr_count); |
bc7f75fa AK |
2961 | } |
2962 | ||
2963 | /** | |
2964 | * e1000_set_multi - Multicast and Promiscuous mode set | |
2965 | * @netdev: network interface device structure | |
2966 | * | |
2967 | * The set_multi entry point is called whenever the multicast address | |
2968 | * list or the network interface flags are updated. This routine is | |
2969 | * responsible for configuring the hardware for proper multicast, | |
2970 | * promiscuous mode, and all-multi behavior. | |
2971 | **/ | |
2972 | static void e1000_set_multi(struct net_device *netdev) | |
2973 | { | |
2974 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
2975 | struct e1000_hw *hw = &adapter->hw; | |
22bedad3 | 2976 | struct netdev_hw_addr *ha; |
bc7f75fa AK |
2977 | u8 *mta_list; |
2978 | u32 rctl; | |
2979 | int i; | |
2980 | ||
2981 | /* Check for Promiscuous and All Multicast modes */ | |
2982 | ||
2983 | rctl = er32(RCTL); | |
2984 | ||
2985 | if (netdev->flags & IFF_PROMISC) { | |
2986 | rctl |= (E1000_RCTL_UPE | E1000_RCTL_MPE); | |
746b9f02 | 2987 | rctl &= ~E1000_RCTL_VFE; |
bc7f75fa | 2988 | } else { |
746b9f02 PM |
2989 | if (netdev->flags & IFF_ALLMULTI) { |
2990 | rctl |= E1000_RCTL_MPE; | |
2991 | rctl &= ~E1000_RCTL_UPE; | |
2992 | } else { | |
2993 | rctl &= ~(E1000_RCTL_UPE | E1000_RCTL_MPE); | |
2994 | } | |
78ed11a5 | 2995 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) |
746b9f02 | 2996 | rctl |= E1000_RCTL_VFE; |
bc7f75fa AK |
2997 | } |
2998 | ||
2999 | ew32(RCTL, rctl); | |
3000 | ||
7aeef972 JP |
3001 | if (!netdev_mc_empty(netdev)) { |
3002 | mta_list = kmalloc(netdev_mc_count(netdev) * 6, GFP_ATOMIC); | |
bc7f75fa AK |
3003 | if (!mta_list) |
3004 | return; | |
3005 | ||
3006 | /* prepare a packed array of only addresses. */ | |
7aeef972 | 3007 | i = 0; |
22bedad3 JP |
3008 | netdev_for_each_mc_addr(ha, netdev) |
3009 | memcpy(mta_list + (i++ * ETH_ALEN), ha->addr, ETH_ALEN); | |
bc7f75fa | 3010 | |
ab8932f3 | 3011 | e1000_update_mc_addr_list(hw, mta_list, i); |
bc7f75fa AK |
3012 | kfree(mta_list); |
3013 | } else { | |
3014 | /* | |
3015 | * if we're called from probe, we might not have | |
3016 | * anything to do here, so clear out the list | |
3017 | */ | |
ab8932f3 | 3018 | e1000_update_mc_addr_list(hw, NULL, 0); |
bc7f75fa AK |
3019 | } |
3020 | } | |
3021 | ||
3022 | /** | |
ad68076e | 3023 | * e1000_configure - configure the hardware for Rx and Tx |
bc7f75fa AK |
3024 | * @adapter: private board structure |
3025 | **/ | |
3026 | static void e1000_configure(struct e1000_adapter *adapter) | |
3027 | { | |
3028 | e1000_set_multi(adapter->netdev); | |
3029 | ||
3030 | e1000_restore_vlan(adapter); | |
cd791618 | 3031 | e1000_init_manageability_pt(adapter); |
bc7f75fa AK |
3032 | |
3033 | e1000_configure_tx(adapter); | |
3034 | e1000_setup_rctl(adapter); | |
3035 | e1000_configure_rx(adapter); | |
ad68076e | 3036 | adapter->alloc_rx_buf(adapter, e1000_desc_unused(adapter->rx_ring)); |
bc7f75fa AK |
3037 | } |
3038 | ||
3039 | /** | |
3040 | * e1000e_power_up_phy - restore link in case the phy was powered down | |
3041 | * @adapter: address of board private structure | |
3042 | * | |
3043 | * The phy may be powered down to save power and turn off link when the | |
3044 | * driver is unloaded and wake on lan is not enabled (among others) | |
3045 | * *** this routine MUST be followed by a call to e1000e_reset *** | |
3046 | **/ | |
3047 | void e1000e_power_up_phy(struct e1000_adapter *adapter) | |
3048 | { | |
17f208de BA |
3049 | if (adapter->hw.phy.ops.power_up) |
3050 | adapter->hw.phy.ops.power_up(&adapter->hw); | |
bc7f75fa AK |
3051 | |
3052 | adapter->hw.mac.ops.setup_link(&adapter->hw); | |
3053 | } | |
3054 | ||
3055 | /** | |
3056 | * e1000_power_down_phy - Power down the PHY | |
3057 | * | |
17f208de BA |
3058 | * Power down the PHY so no link is implied when interface is down. |
3059 | * The PHY cannot be powered down if management or WoL is active. | |
bc7f75fa AK |
3060 | */ |
3061 | static void e1000_power_down_phy(struct e1000_adapter *adapter) | |
3062 | { | |
bc7f75fa | 3063 | /* WoL is enabled */ |
23b66e2b | 3064 | if (adapter->wol) |
bc7f75fa AK |
3065 | return; |
3066 | ||
17f208de BA |
3067 | if (adapter->hw.phy.ops.power_down) |
3068 | adapter->hw.phy.ops.power_down(&adapter->hw); | |
bc7f75fa AK |
3069 | } |
3070 | ||
3071 | /** | |
3072 | * e1000e_reset - bring the hardware into a known good state | |
3073 | * | |
3074 | * This function boots the hardware and enables some settings that | |
3075 | * require a configuration cycle of the hardware - those cannot be | |
3076 | * set/changed during runtime. After reset the device needs to be | |
ad68076e | 3077 | * properly configured for Rx, Tx etc. |
bc7f75fa AK |
3078 | */ |
3079 | void e1000e_reset(struct e1000_adapter *adapter) | |
3080 | { | |
3081 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
318a94d6 | 3082 | struct e1000_fc_info *fc = &adapter->hw.fc; |
bc7f75fa AK |
3083 | struct e1000_hw *hw = &adapter->hw; |
3084 | u32 tx_space, min_tx_space, min_rx_space; | |
318a94d6 | 3085 | u32 pba = adapter->pba; |
bc7f75fa AK |
3086 | u16 hwm; |
3087 | ||
ad68076e | 3088 | /* reset Packet Buffer Allocation to default */ |
318a94d6 | 3089 | ew32(PBA, pba); |
df762464 | 3090 | |
318a94d6 | 3091 | if (adapter->max_frame_size > ETH_FRAME_LEN + ETH_FCS_LEN) { |
ad68076e BA |
3092 | /* |
3093 | * To maintain wire speed transmits, the Tx FIFO should be | |
bc7f75fa AK |
3094 | * large enough to accommodate two full transmit packets, |
3095 | * rounded up to the next 1KB and expressed in KB. Likewise, | |
3096 | * the Rx FIFO should be large enough to accommodate at least | |
3097 | * one full receive packet and is similarly rounded up and | |
ad68076e BA |
3098 | * expressed in KB. |
3099 | */ | |
df762464 | 3100 | pba = er32(PBA); |
bc7f75fa | 3101 | /* upper 16 bits has Tx packet buffer allocation size in KB */ |
df762464 | 3102 | tx_space = pba >> 16; |
bc7f75fa | 3103 | /* lower 16 bits has Rx packet buffer allocation size in KB */ |
df762464 | 3104 | pba &= 0xffff; |
ad68076e BA |
3105 | /* |
3106 | * the Tx fifo also stores 16 bytes of information about the tx | |
3107 | * but don't include ethernet FCS because hardware appends it | |
318a94d6 JK |
3108 | */ |
3109 | min_tx_space = (adapter->max_frame_size + | |
bc7f75fa AK |
3110 | sizeof(struct e1000_tx_desc) - |
3111 | ETH_FCS_LEN) * 2; | |
3112 | min_tx_space = ALIGN(min_tx_space, 1024); | |
3113 | min_tx_space >>= 10; | |
3114 | /* software strips receive CRC, so leave room for it */ | |
318a94d6 | 3115 | min_rx_space = adapter->max_frame_size; |
bc7f75fa AK |
3116 | min_rx_space = ALIGN(min_rx_space, 1024); |
3117 | min_rx_space >>= 10; | |
3118 | ||
ad68076e BA |
3119 | /* |
3120 | * If current Tx allocation is less than the min Tx FIFO size, | |
bc7f75fa | 3121 | * and the min Tx FIFO size is less than the current Rx FIFO |
ad68076e BA |
3122 | * allocation, take space away from current Rx allocation |
3123 | */ | |
df762464 AK |
3124 | if ((tx_space < min_tx_space) && |
3125 | ((min_tx_space - tx_space) < pba)) { | |
3126 | pba -= min_tx_space - tx_space; | |
bc7f75fa | 3127 | |
ad68076e BA |
3128 | /* |
3129 | * if short on Rx space, Rx wins and must trump tx | |
3130 | * adjustment or use Early Receive if available | |
3131 | */ | |
df762464 | 3132 | if ((pba < min_rx_space) && |
bc7f75fa AK |
3133 | (!(adapter->flags & FLAG_HAS_ERT))) |
3134 | /* ERT enabled in e1000_configure_rx */ | |
df762464 | 3135 | pba = min_rx_space; |
bc7f75fa | 3136 | } |
df762464 AK |
3137 | |
3138 | ew32(PBA, pba); | |
bc7f75fa AK |
3139 | } |
3140 | ||
bc7f75fa | 3141 | |
ad68076e BA |
3142 | /* |
3143 | * flow control settings | |
3144 | * | |
38eb394e | 3145 | * The high water mark must be low enough to fit one full frame |
bc7f75fa AK |
3146 | * (or the size used for early receive) above it in the Rx FIFO. |
3147 | * Set it to the lower of: | |
3148 | * - 90% of the Rx FIFO size, and | |
3149 | * - the full Rx FIFO size minus the early receive size (for parts | |
3150 | * with ERT support assuming ERT set to E1000_ERT_2048), or | |
38eb394e | 3151 | * - the full Rx FIFO size minus one full frame |
ad68076e | 3152 | */ |
d3738bb8 BA |
3153 | if (adapter->flags & FLAG_DISABLE_FC_PAUSE_TIME) |
3154 | fc->pause_time = 0xFFFF; | |
3155 | else | |
3156 | fc->pause_time = E1000_FC_PAUSE_TIME; | |
3157 | fc->send_xon = 1; | |
3158 | fc->current_mode = fc->requested_mode; | |
3159 | ||
3160 | switch (hw->mac.type) { | |
3161 | default: | |
3162 | if ((adapter->flags & FLAG_HAS_ERT) && | |
3163 | (adapter->netdev->mtu > ETH_DATA_LEN)) | |
3164 | hwm = min(((pba << 10) * 9 / 10), | |
3165 | ((pba << 10) - (E1000_ERT_2048 << 3))); | |
3166 | else | |
3167 | hwm = min(((pba << 10) * 9 / 10), | |
3168 | ((pba << 10) - adapter->max_frame_size)); | |
3169 | ||
3170 | fc->high_water = hwm & E1000_FCRTH_RTH; /* 8-byte granularity */ | |
3171 | fc->low_water = fc->high_water - 8; | |
3172 | break; | |
3173 | case e1000_pchlan: | |
38eb394e BA |
3174 | /* |
3175 | * Workaround PCH LOM adapter hangs with certain network | |
3176 | * loads. If hangs persist, try disabling Tx flow control. | |
3177 | */ | |
3178 | if (adapter->netdev->mtu > ETH_DATA_LEN) { | |
3179 | fc->high_water = 0x3500; | |
3180 | fc->low_water = 0x1500; | |
3181 | } else { | |
3182 | fc->high_water = 0x5000; | |
3183 | fc->low_water = 0x3000; | |
3184 | } | |
a305595b | 3185 | fc->refresh_time = 0x1000; |
d3738bb8 BA |
3186 | break; |
3187 | case e1000_pch2lan: | |
3188 | fc->high_water = 0x05C20; | |
3189 | fc->low_water = 0x05048; | |
3190 | fc->pause_time = 0x0650; | |
3191 | fc->refresh_time = 0x0400; | |
3192 | break; | |
38eb394e | 3193 | } |
bc7f75fa | 3194 | |
bc7f75fa AK |
3195 | /* Allow time for pending master requests to run */ |
3196 | mac->ops.reset_hw(hw); | |
97ac8cae BA |
3197 | |
3198 | /* | |
3199 | * For parts with AMT enabled, let the firmware know | |
3200 | * that the network interface is in control | |
3201 | */ | |
c43bc57e | 3202 | if (adapter->flags & FLAG_HAS_AMT) |
97ac8cae BA |
3203 | e1000_get_hw_control(adapter); |
3204 | ||
bc7f75fa AK |
3205 | ew32(WUC, 0); |
3206 | ||
3207 | if (mac->ops.init_hw(hw)) | |
44defeb3 | 3208 | e_err("Hardware Error\n"); |
bc7f75fa AK |
3209 | |
3210 | e1000_update_mng_vlan(adapter); | |
3211 | ||
3212 | /* Enable h/w to recognize an 802.1Q VLAN Ethernet packet */ | |
3213 | ew32(VET, ETH_P_8021Q); | |
3214 | ||
3215 | e1000e_reset_adaptive(hw); | |
3216 | e1000_get_phy_info(hw); | |
3217 | ||
918d7197 BA |
3218 | if ((adapter->flags & FLAG_HAS_SMART_POWER_DOWN) && |
3219 | !(adapter->flags & FLAG_SMART_POWER_DOWN)) { | |
bc7f75fa | 3220 | u16 phy_data = 0; |
ad68076e BA |
3221 | /* |
3222 | * speed up time to link by disabling smart power down, ignore | |
bc7f75fa | 3223 | * the return value of this function because there is nothing |
ad68076e BA |
3224 | * different we would do if it failed |
3225 | */ | |
bc7f75fa AK |
3226 | e1e_rphy(hw, IGP02E1000_PHY_POWER_MGMT, &phy_data); |
3227 | phy_data &= ~IGP02E1000_PM_SPD; | |
3228 | e1e_wphy(hw, IGP02E1000_PHY_POWER_MGMT, phy_data); | |
3229 | } | |
bc7f75fa AK |
3230 | } |
3231 | ||
3232 | int e1000e_up(struct e1000_adapter *adapter) | |
3233 | { | |
3234 | struct e1000_hw *hw = &adapter->hw; | |
3235 | ||
3236 | /* hardware has been reset, we need to reload some things */ | |
3237 | e1000_configure(adapter); | |
3238 | ||
3239 | clear_bit(__E1000_DOWN, &adapter->state); | |
3240 | ||
3241 | napi_enable(&adapter->napi); | |
4662e82b BA |
3242 | if (adapter->msix_entries) |
3243 | e1000_configure_msix(adapter); | |
bc7f75fa AK |
3244 | e1000_irq_enable(adapter); |
3245 | ||
4cb9be7a JB |
3246 | netif_wake_queue(adapter->netdev); |
3247 | ||
bc7f75fa | 3248 | /* fire a link change interrupt to start the watchdog */ |
52a9b231 BA |
3249 | if (adapter->msix_entries) |
3250 | ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); | |
3251 | else | |
3252 | ew32(ICS, E1000_ICS_LSC); | |
3253 | ||
bc7f75fa AK |
3254 | return 0; |
3255 | } | |
3256 | ||
3257 | void e1000e_down(struct e1000_adapter *adapter) | |
3258 | { | |
3259 | struct net_device *netdev = adapter->netdev; | |
3260 | struct e1000_hw *hw = &adapter->hw; | |
3261 | u32 tctl, rctl; | |
3262 | ||
ad68076e BA |
3263 | /* |
3264 | * signal that we're down so the interrupt handler does not | |
3265 | * reschedule our watchdog timer | |
3266 | */ | |
bc7f75fa AK |
3267 | set_bit(__E1000_DOWN, &adapter->state); |
3268 | ||
3269 | /* disable receives in the hardware */ | |
3270 | rctl = er32(RCTL); | |
3271 | ew32(RCTL, rctl & ~E1000_RCTL_EN); | |
3272 | /* flush and sleep below */ | |
3273 | ||
4cb9be7a | 3274 | netif_stop_queue(netdev); |
bc7f75fa AK |
3275 | |
3276 | /* disable transmits in the hardware */ | |
3277 | tctl = er32(TCTL); | |
3278 | tctl &= ~E1000_TCTL_EN; | |
3279 | ew32(TCTL, tctl); | |
3280 | /* flush both disables and wait for them to finish */ | |
3281 | e1e_flush(); | |
3282 | msleep(10); | |
3283 | ||
3284 | napi_disable(&adapter->napi); | |
3285 | e1000_irq_disable(adapter); | |
3286 | ||
3287 | del_timer_sync(&adapter->watchdog_timer); | |
3288 | del_timer_sync(&adapter->phy_info_timer); | |
3289 | ||
bc7f75fa AK |
3290 | netif_carrier_off(netdev); |
3291 | adapter->link_speed = 0; | |
3292 | adapter->link_duplex = 0; | |
3293 | ||
52cc3086 JK |
3294 | if (!pci_channel_offline(adapter->pdev)) |
3295 | e1000e_reset(adapter); | |
bc7f75fa AK |
3296 | e1000_clean_tx_ring(adapter); |
3297 | e1000_clean_rx_ring(adapter); | |
3298 | ||
3299 | /* | |
3300 | * TODO: for power management, we could drop the link and | |
3301 | * pci_disable_device here. | |
3302 | */ | |
3303 | } | |
3304 | ||
3305 | void e1000e_reinit_locked(struct e1000_adapter *adapter) | |
3306 | { | |
3307 | might_sleep(); | |
3308 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) | |
3309 | msleep(1); | |
3310 | e1000e_down(adapter); | |
3311 | e1000e_up(adapter); | |
3312 | clear_bit(__E1000_RESETTING, &adapter->state); | |
3313 | } | |
3314 | ||
3315 | /** | |
3316 | * e1000_sw_init - Initialize general software structures (struct e1000_adapter) | |
3317 | * @adapter: board private structure to initialize | |
3318 | * | |
3319 | * e1000_sw_init initializes the Adapter private data structure. | |
3320 | * Fields are initialized based on PCI device information and | |
3321 | * OS network device settings (MTU size). | |
3322 | **/ | |
3323 | static int __devinit e1000_sw_init(struct e1000_adapter *adapter) | |
3324 | { | |
bc7f75fa AK |
3325 | struct net_device *netdev = adapter->netdev; |
3326 | ||
3327 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN; | |
3328 | adapter->rx_ps_bsize0 = 128; | |
318a94d6 JK |
3329 | adapter->max_frame_size = netdev->mtu + ETH_HLEN + ETH_FCS_LEN; |
3330 | adapter->min_frame_size = ETH_ZLEN + ETH_FCS_LEN; | |
bc7f75fa | 3331 | |
4662e82b | 3332 | e1000e_set_interrupt_capability(adapter); |
bc7f75fa | 3333 | |
4662e82b BA |
3334 | if (e1000_alloc_queues(adapter)) |
3335 | return -ENOMEM; | |
bc7f75fa | 3336 | |
bc7f75fa | 3337 | /* Explicitly disable IRQ since the NIC can be in any state. */ |
bc7f75fa AK |
3338 | e1000_irq_disable(adapter); |
3339 | ||
bc7f75fa AK |
3340 | set_bit(__E1000_DOWN, &adapter->state); |
3341 | return 0; | |
bc7f75fa AK |
3342 | } |
3343 | ||
f8d59f78 BA |
3344 | /** |
3345 | * e1000_intr_msi_test - Interrupt Handler | |
3346 | * @irq: interrupt number | |
3347 | * @data: pointer to a network interface device structure | |
3348 | **/ | |
3349 | static irqreturn_t e1000_intr_msi_test(int irq, void *data) | |
3350 | { | |
3351 | struct net_device *netdev = data; | |
3352 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3353 | struct e1000_hw *hw = &adapter->hw; | |
3354 | u32 icr = er32(ICR); | |
3355 | ||
3bb99fe2 | 3356 | e_dbg("icr is %08X\n", icr); |
f8d59f78 BA |
3357 | if (icr & E1000_ICR_RXSEQ) { |
3358 | adapter->flags &= ~FLAG_MSI_TEST_FAILED; | |
3359 | wmb(); | |
3360 | } | |
3361 | ||
3362 | return IRQ_HANDLED; | |
3363 | } | |
3364 | ||
3365 | /** | |
3366 | * e1000_test_msi_interrupt - Returns 0 for successful test | |
3367 | * @adapter: board private struct | |
3368 | * | |
3369 | * code flow taken from tg3.c | |
3370 | **/ | |
3371 | static int e1000_test_msi_interrupt(struct e1000_adapter *adapter) | |
3372 | { | |
3373 | struct net_device *netdev = adapter->netdev; | |
3374 | struct e1000_hw *hw = &adapter->hw; | |
3375 | int err; | |
3376 | ||
3377 | /* poll_enable hasn't been called yet, so don't need disable */ | |
3378 | /* clear any pending events */ | |
3379 | er32(ICR); | |
3380 | ||
3381 | /* free the real vector and request a test handler */ | |
3382 | e1000_free_irq(adapter); | |
4662e82b | 3383 | e1000e_reset_interrupt_capability(adapter); |
f8d59f78 BA |
3384 | |
3385 | /* Assume that the test fails, if it succeeds then the test | |
3386 | * MSI irq handler will unset this flag */ | |
3387 | adapter->flags |= FLAG_MSI_TEST_FAILED; | |
3388 | ||
3389 | err = pci_enable_msi(adapter->pdev); | |
3390 | if (err) | |
3391 | goto msi_test_failed; | |
3392 | ||
a0607fd3 | 3393 | err = request_irq(adapter->pdev->irq, e1000_intr_msi_test, 0, |
f8d59f78 BA |
3394 | netdev->name, netdev); |
3395 | if (err) { | |
3396 | pci_disable_msi(adapter->pdev); | |
3397 | goto msi_test_failed; | |
3398 | } | |
3399 | ||
3400 | wmb(); | |
3401 | ||
3402 | e1000_irq_enable(adapter); | |
3403 | ||
3404 | /* fire an unusual interrupt on the test handler */ | |
3405 | ew32(ICS, E1000_ICS_RXSEQ); | |
3406 | e1e_flush(); | |
3407 | msleep(50); | |
3408 | ||
3409 | e1000_irq_disable(adapter); | |
3410 | ||
3411 | rmb(); | |
3412 | ||
3413 | if (adapter->flags & FLAG_MSI_TEST_FAILED) { | |
4662e82b | 3414 | adapter->int_mode = E1000E_INT_MODE_LEGACY; |
068e8a30 JD |
3415 | e_info("MSI interrupt test failed, using legacy interrupt.\n"); |
3416 | } else | |
3417 | e_dbg("MSI interrupt test succeeded!\n"); | |
f8d59f78 BA |
3418 | |
3419 | free_irq(adapter->pdev->irq, netdev); | |
3420 | pci_disable_msi(adapter->pdev); | |
3421 | ||
f8d59f78 | 3422 | msi_test_failed: |
4662e82b | 3423 | e1000e_set_interrupt_capability(adapter); |
068e8a30 | 3424 | return e1000_request_irq(adapter); |
f8d59f78 BA |
3425 | } |
3426 | ||
3427 | /** | |
3428 | * e1000_test_msi - Returns 0 if MSI test succeeds or INTx mode is restored | |
3429 | * @adapter: board private struct | |
3430 | * | |
3431 | * code flow taken from tg3.c, called with e1000 interrupts disabled. | |
3432 | **/ | |
3433 | static int e1000_test_msi(struct e1000_adapter *adapter) | |
3434 | { | |
3435 | int err; | |
3436 | u16 pci_cmd; | |
3437 | ||
3438 | if (!(adapter->flags & FLAG_MSI_ENABLED)) | |
3439 | return 0; | |
3440 | ||
3441 | /* disable SERR in case the MSI write causes a master abort */ | |
3442 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); | |
36f2407f DN |
3443 | if (pci_cmd & PCI_COMMAND_SERR) |
3444 | pci_write_config_word(adapter->pdev, PCI_COMMAND, | |
3445 | pci_cmd & ~PCI_COMMAND_SERR); | |
f8d59f78 BA |
3446 | |
3447 | err = e1000_test_msi_interrupt(adapter); | |
3448 | ||
36f2407f DN |
3449 | /* re-enable SERR */ |
3450 | if (pci_cmd & PCI_COMMAND_SERR) { | |
3451 | pci_read_config_word(adapter->pdev, PCI_COMMAND, &pci_cmd); | |
3452 | pci_cmd |= PCI_COMMAND_SERR; | |
3453 | pci_write_config_word(adapter->pdev, PCI_COMMAND, pci_cmd); | |
3454 | } | |
f8d59f78 | 3455 | |
f8d59f78 BA |
3456 | return err; |
3457 | } | |
3458 | ||
bc7f75fa AK |
3459 | /** |
3460 | * e1000_open - Called when a network interface is made active | |
3461 | * @netdev: network interface device structure | |
3462 | * | |
3463 | * Returns 0 on success, negative value on failure | |
3464 | * | |
3465 | * The open entry point is called when a network interface is made | |
3466 | * active by the system (IFF_UP). At this point all resources needed | |
3467 | * for transmit and receive operations are allocated, the interrupt | |
3468 | * handler is registered with the OS, the watchdog timer is started, | |
3469 | * and the stack is notified that the interface is ready. | |
3470 | **/ | |
3471 | static int e1000_open(struct net_device *netdev) | |
3472 | { | |
3473 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3474 | struct e1000_hw *hw = &adapter->hw; | |
23606cf5 | 3475 | struct pci_dev *pdev = adapter->pdev; |
bc7f75fa AK |
3476 | int err; |
3477 | ||
3478 | /* disallow open during test */ | |
3479 | if (test_bit(__E1000_TESTING, &adapter->state)) | |
3480 | return -EBUSY; | |
3481 | ||
23606cf5 RW |
3482 | pm_runtime_get_sync(&pdev->dev); |
3483 | ||
9c563d20 JB |
3484 | netif_carrier_off(netdev); |
3485 | ||
bc7f75fa AK |
3486 | /* allocate transmit descriptors */ |
3487 | err = e1000e_setup_tx_resources(adapter); | |
3488 | if (err) | |
3489 | goto err_setup_tx; | |
3490 | ||
3491 | /* allocate receive descriptors */ | |
3492 | err = e1000e_setup_rx_resources(adapter); | |
3493 | if (err) | |
3494 | goto err_setup_rx; | |
3495 | ||
11b08be8 BA |
3496 | /* |
3497 | * If AMT is enabled, let the firmware know that the network | |
3498 | * interface is now open and reset the part to a known state. | |
3499 | */ | |
3500 | if (adapter->flags & FLAG_HAS_AMT) { | |
3501 | e1000_get_hw_control(adapter); | |
3502 | e1000e_reset(adapter); | |
3503 | } | |
3504 | ||
bc7f75fa AK |
3505 | e1000e_power_up_phy(adapter); |
3506 | ||
3507 | adapter->mng_vlan_id = E1000_MNG_VLAN_NONE; | |
3508 | if ((adapter->hw.mng_cookie.status & | |
3509 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN)) | |
3510 | e1000_update_mng_vlan(adapter); | |
3511 | ||
c128ec29 FM |
3512 | /* DMA latency requirement to workaround early-receive/jumbo issue */ |
3513 | if (adapter->flags & FLAG_HAS_ERT) | |
6ba74014 LT |
3514 | pm_qos_add_request(&adapter->netdev->pm_qos_req, |
3515 | PM_QOS_CPU_DMA_LATENCY, | |
3516 | PM_QOS_DEFAULT_VALUE); | |
c128ec29 | 3517 | |
ad68076e BA |
3518 | /* |
3519 | * before we allocate an interrupt, we must be ready to handle it. | |
bc7f75fa AK |
3520 | * Setting DEBUG_SHIRQ in the kernel makes it fire an interrupt |
3521 | * as soon as we call pci_request_irq, so we have to setup our | |
ad68076e BA |
3522 | * clean_rx handler before we do so. |
3523 | */ | |
bc7f75fa AK |
3524 | e1000_configure(adapter); |
3525 | ||
3526 | err = e1000_request_irq(adapter); | |
3527 | if (err) | |
3528 | goto err_req_irq; | |
3529 | ||
f8d59f78 BA |
3530 | /* |
3531 | * Work around PCIe errata with MSI interrupts causing some chipsets to | |
3532 | * ignore e1000e MSI messages, which means we need to test our MSI | |
3533 | * interrupt now | |
3534 | */ | |
4662e82b | 3535 | if (adapter->int_mode != E1000E_INT_MODE_LEGACY) { |
f8d59f78 BA |
3536 | err = e1000_test_msi(adapter); |
3537 | if (err) { | |
3538 | e_err("Interrupt allocation failed\n"); | |
3539 | goto err_req_irq; | |
3540 | } | |
3541 | } | |
3542 | ||
bc7f75fa AK |
3543 | /* From here on the code is the same as e1000e_up() */ |
3544 | clear_bit(__E1000_DOWN, &adapter->state); | |
3545 | ||
3546 | napi_enable(&adapter->napi); | |
3547 | ||
3548 | e1000_irq_enable(adapter); | |
3549 | ||
4cb9be7a | 3550 | netif_start_queue(netdev); |
d55b53ff | 3551 | |
23606cf5 RW |
3552 | adapter->idle_check = true; |
3553 | pm_runtime_put(&pdev->dev); | |
3554 | ||
bc7f75fa | 3555 | /* fire a link status change interrupt to start the watchdog */ |
52a9b231 BA |
3556 | if (adapter->msix_entries) |
3557 | ew32(ICS, E1000_ICS_LSC | E1000_ICR_OTHER); | |
3558 | else | |
3559 | ew32(ICS, E1000_ICS_LSC); | |
bc7f75fa AK |
3560 | |
3561 | return 0; | |
3562 | ||
3563 | err_req_irq: | |
3564 | e1000_release_hw_control(adapter); | |
3565 | e1000_power_down_phy(adapter); | |
3566 | e1000e_free_rx_resources(adapter); | |
3567 | err_setup_rx: | |
3568 | e1000e_free_tx_resources(adapter); | |
3569 | err_setup_tx: | |
3570 | e1000e_reset(adapter); | |
23606cf5 | 3571 | pm_runtime_put_sync(&pdev->dev); |
bc7f75fa AK |
3572 | |
3573 | return err; | |
3574 | } | |
3575 | ||
3576 | /** | |
3577 | * e1000_close - Disables a network interface | |
3578 | * @netdev: network interface device structure | |
3579 | * | |
3580 | * Returns 0, this is not allowed to fail | |
3581 | * | |
3582 | * The close entry point is called when an interface is de-activated | |
3583 | * by the OS. The hardware is still under the drivers control, but | |
3584 | * needs to be disabled. A global MAC reset is issued to stop the | |
3585 | * hardware, and all transmit and receive resources are freed. | |
3586 | **/ | |
3587 | static int e1000_close(struct net_device *netdev) | |
3588 | { | |
3589 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
23606cf5 | 3590 | struct pci_dev *pdev = adapter->pdev; |
bc7f75fa AK |
3591 | |
3592 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
23606cf5 RW |
3593 | |
3594 | pm_runtime_get_sync(&pdev->dev); | |
3595 | ||
3596 | if (!test_bit(__E1000_DOWN, &adapter->state)) { | |
3597 | e1000e_down(adapter); | |
3598 | e1000_free_irq(adapter); | |
3599 | } | |
bc7f75fa | 3600 | e1000_power_down_phy(adapter); |
bc7f75fa AK |
3601 | |
3602 | e1000e_free_tx_resources(adapter); | |
3603 | e1000e_free_rx_resources(adapter); | |
3604 | ||
ad68076e BA |
3605 | /* |
3606 | * kill manageability vlan ID if supported, but not if a vlan with | |
3607 | * the same ID is registered on the host OS (let 8021q kill it) | |
3608 | */ | |
bc7f75fa AK |
3609 | if ((adapter->hw.mng_cookie.status & |
3610 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN) && | |
3611 | !(adapter->vlgrp && | |
3612 | vlan_group_get_device(adapter->vlgrp, adapter->mng_vlan_id))) | |
3613 | e1000_vlan_rx_kill_vid(netdev, adapter->mng_vlan_id); | |
3614 | ||
ad68076e BA |
3615 | /* |
3616 | * If AMT is enabled, let the firmware know that the network | |
3617 | * interface is now closed | |
3618 | */ | |
c43bc57e | 3619 | if (adapter->flags & FLAG_HAS_AMT) |
bc7f75fa AK |
3620 | e1000_release_hw_control(adapter); |
3621 | ||
6ba74014 LT |
3622 | if (adapter->flags & FLAG_HAS_ERT) |
3623 | pm_qos_remove_request(&adapter->netdev->pm_qos_req); | |
c128ec29 | 3624 | |
23606cf5 RW |
3625 | pm_runtime_put_sync(&pdev->dev); |
3626 | ||
bc7f75fa AK |
3627 | return 0; |
3628 | } | |
3629 | /** | |
3630 | * e1000_set_mac - Change the Ethernet Address of the NIC | |
3631 | * @netdev: network interface device structure | |
3632 | * @p: pointer to an address structure | |
3633 | * | |
3634 | * Returns 0 on success, negative on failure | |
3635 | **/ | |
3636 | static int e1000_set_mac(struct net_device *netdev, void *p) | |
3637 | { | |
3638 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
3639 | struct sockaddr *addr = p; | |
3640 | ||
3641 | if (!is_valid_ether_addr(addr->sa_data)) | |
3642 | return -EADDRNOTAVAIL; | |
3643 | ||
3644 | memcpy(netdev->dev_addr, addr->sa_data, netdev->addr_len); | |
3645 | memcpy(adapter->hw.mac.addr, addr->sa_data, netdev->addr_len); | |
3646 | ||
3647 | e1000e_rar_set(&adapter->hw, adapter->hw.mac.addr, 0); | |
3648 | ||
3649 | if (adapter->flags & FLAG_RESET_OVERWRITES_LAA) { | |
3650 | /* activate the work around */ | |
3651 | e1000e_set_laa_state_82571(&adapter->hw, 1); | |
3652 | ||
ad68076e BA |
3653 | /* |
3654 | * Hold a copy of the LAA in RAR[14] This is done so that | |
bc7f75fa AK |
3655 | * between the time RAR[0] gets clobbered and the time it |
3656 | * gets fixed (in e1000_watchdog), the actual LAA is in one | |
3657 | * of the RARs and no incoming packets directed to this port | |
3658 | * are dropped. Eventually the LAA will be in RAR[0] and | |
ad68076e BA |
3659 | * RAR[14] |
3660 | */ | |
bc7f75fa AK |
3661 | e1000e_rar_set(&adapter->hw, |
3662 | adapter->hw.mac.addr, | |
3663 | adapter->hw.mac.rar_entry_count - 1); | |
3664 | } | |
3665 | ||
3666 | return 0; | |
3667 | } | |
3668 | ||
a8f88ff5 JB |
3669 | /** |
3670 | * e1000e_update_phy_task - work thread to update phy | |
3671 | * @work: pointer to our work struct | |
3672 | * | |
3673 | * this worker thread exists because we must acquire a | |
3674 | * semaphore to read the phy, which we could msleep while | |
3675 | * waiting for it, and we can't msleep in a timer. | |
3676 | **/ | |
3677 | static void e1000e_update_phy_task(struct work_struct *work) | |
3678 | { | |
3679 | struct e1000_adapter *adapter = container_of(work, | |
3680 | struct e1000_adapter, update_phy_task); | |
3681 | e1000_get_phy_info(&adapter->hw); | |
3682 | } | |
3683 | ||
ad68076e BA |
3684 | /* |
3685 | * Need to wait a few seconds after link up to get diagnostic information from | |
3686 | * the phy | |
3687 | */ | |
bc7f75fa AK |
3688 | static void e1000_update_phy_info(unsigned long data) |
3689 | { | |
3690 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
a8f88ff5 | 3691 | schedule_work(&adapter->update_phy_task); |
bc7f75fa AK |
3692 | } |
3693 | ||
8c7bbb92 BA |
3694 | /** |
3695 | * e1000e_update_phy_stats - Update the PHY statistics counters | |
3696 | * @adapter: board private structure | |
3697 | **/ | |
3698 | static void e1000e_update_phy_stats(struct e1000_adapter *adapter) | |
3699 | { | |
3700 | struct e1000_hw *hw = &adapter->hw; | |
3701 | s32 ret_val; | |
3702 | u16 phy_data; | |
3703 | ||
3704 | ret_val = hw->phy.ops.acquire(hw); | |
3705 | if (ret_val) | |
3706 | return; | |
3707 | ||
3708 | hw->phy.addr = 1; | |
3709 | ||
3710 | #define HV_PHY_STATS_PAGE 778 | |
3711 | /* | |
3712 | * A page set is expensive so check if already on desired page. | |
3713 | * If not, set to the page with the PHY status registers. | |
3714 | */ | |
3715 | ret_val = e1000e_read_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, | |
3716 | &phy_data); | |
3717 | if (ret_val) | |
3718 | goto release; | |
3719 | if (phy_data != (HV_PHY_STATS_PAGE << IGP_PAGE_SHIFT)) { | |
3720 | ret_val = e1000e_write_phy_reg_mdic(hw, | |
3721 | IGP01E1000_PHY_PAGE_SELECT, | |
3722 | (HV_PHY_STATS_PAGE << | |
3723 | IGP_PAGE_SHIFT)); | |
3724 | if (ret_val) | |
3725 | goto release; | |
3726 | } | |
3727 | ||
3728 | /* Read/clear the upper 16-bit registers and read/accumulate lower */ | |
3729 | ||
3730 | /* Single Collision Count */ | |
3731 | e1000e_read_phy_reg_mdic(hw, HV_SCC_UPPER & MAX_PHY_REG_ADDRESS, | |
3732 | &phy_data); | |
3733 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3734 | HV_SCC_LOWER & MAX_PHY_REG_ADDRESS, | |
3735 | &phy_data); | |
3736 | if (!ret_val) | |
3737 | adapter->stats.scc += phy_data; | |
3738 | ||
3739 | /* Excessive Collision Count */ | |
3740 | e1000e_read_phy_reg_mdic(hw, HV_ECOL_UPPER & MAX_PHY_REG_ADDRESS, | |
3741 | &phy_data); | |
3742 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3743 | HV_ECOL_LOWER & MAX_PHY_REG_ADDRESS, | |
3744 | &phy_data); | |
3745 | if (!ret_val) | |
3746 | adapter->stats.ecol += phy_data; | |
3747 | ||
3748 | /* Multiple Collision Count */ | |
3749 | e1000e_read_phy_reg_mdic(hw, HV_MCC_UPPER & MAX_PHY_REG_ADDRESS, | |
3750 | &phy_data); | |
3751 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3752 | HV_MCC_LOWER & MAX_PHY_REG_ADDRESS, | |
3753 | &phy_data); | |
3754 | if (!ret_val) | |
3755 | adapter->stats.mcc += phy_data; | |
3756 | ||
3757 | /* Late Collision Count */ | |
3758 | e1000e_read_phy_reg_mdic(hw, HV_LATECOL_UPPER & MAX_PHY_REG_ADDRESS, | |
3759 | &phy_data); | |
3760 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3761 | HV_LATECOL_LOWER & | |
3762 | MAX_PHY_REG_ADDRESS, | |
3763 | &phy_data); | |
3764 | if (!ret_val) | |
3765 | adapter->stats.latecol += phy_data; | |
3766 | ||
3767 | /* Collision Count - also used for adaptive IFS */ | |
3768 | e1000e_read_phy_reg_mdic(hw, HV_COLC_UPPER & MAX_PHY_REG_ADDRESS, | |
3769 | &phy_data); | |
3770 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3771 | HV_COLC_LOWER & MAX_PHY_REG_ADDRESS, | |
3772 | &phy_data); | |
3773 | if (!ret_val) | |
3774 | hw->mac.collision_delta = phy_data; | |
3775 | ||
3776 | /* Defer Count */ | |
3777 | e1000e_read_phy_reg_mdic(hw, HV_DC_UPPER & MAX_PHY_REG_ADDRESS, | |
3778 | &phy_data); | |
3779 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3780 | HV_DC_LOWER & MAX_PHY_REG_ADDRESS, | |
3781 | &phy_data); | |
3782 | if (!ret_val) | |
3783 | adapter->stats.dc += phy_data; | |
3784 | ||
3785 | /* Transmit with no CRS */ | |
3786 | e1000e_read_phy_reg_mdic(hw, HV_TNCRS_UPPER & MAX_PHY_REG_ADDRESS, | |
3787 | &phy_data); | |
3788 | ret_val = e1000e_read_phy_reg_mdic(hw, | |
3789 | HV_TNCRS_LOWER & MAX_PHY_REG_ADDRESS, | |
3790 | &phy_data); | |
3791 | if (!ret_val) | |
3792 | adapter->stats.tncrs += phy_data; | |
3793 | ||
3794 | release: | |
3795 | hw->phy.ops.release(hw); | |
3796 | } | |
3797 | ||
bc7f75fa AK |
3798 | /** |
3799 | * e1000e_update_stats - Update the board statistics counters | |
3800 | * @adapter: board private structure | |
3801 | **/ | |
3802 | void e1000e_update_stats(struct e1000_adapter *adapter) | |
3803 | { | |
7274c20f | 3804 | struct net_device *netdev = adapter->netdev; |
bc7f75fa AK |
3805 | struct e1000_hw *hw = &adapter->hw; |
3806 | struct pci_dev *pdev = adapter->pdev; | |
bc7f75fa AK |
3807 | |
3808 | /* | |
3809 | * Prevent stats update while adapter is being reset, or if the pci | |
3810 | * connection is down. | |
3811 | */ | |
3812 | if (adapter->link_speed == 0) | |
3813 | return; | |
3814 | if (pci_channel_offline(pdev)) | |
3815 | return; | |
3816 | ||
bc7f75fa AK |
3817 | adapter->stats.crcerrs += er32(CRCERRS); |
3818 | adapter->stats.gprc += er32(GPRC); | |
7c25769f BA |
3819 | adapter->stats.gorc += er32(GORCL); |
3820 | er32(GORCH); /* Clear gorc */ | |
bc7f75fa AK |
3821 | adapter->stats.bprc += er32(BPRC); |
3822 | adapter->stats.mprc += er32(MPRC); | |
3823 | adapter->stats.roc += er32(ROC); | |
3824 | ||
bc7f75fa | 3825 | adapter->stats.mpc += er32(MPC); |
8c7bbb92 BA |
3826 | |
3827 | /* Half-duplex statistics */ | |
3828 | if (adapter->link_duplex == HALF_DUPLEX) { | |
3829 | if (adapter->flags2 & FLAG2_HAS_PHY_STATS) { | |
3830 | e1000e_update_phy_stats(adapter); | |
3831 | } else { | |
3832 | adapter->stats.scc += er32(SCC); | |
3833 | adapter->stats.ecol += er32(ECOL); | |
3834 | adapter->stats.mcc += er32(MCC); | |
3835 | adapter->stats.latecol += er32(LATECOL); | |
3836 | adapter->stats.dc += er32(DC); | |
3837 | ||
3838 | hw->mac.collision_delta = er32(COLC); | |
3839 | ||
3840 | if ((hw->mac.type != e1000_82574) && | |
3841 | (hw->mac.type != e1000_82583)) | |
3842 | adapter->stats.tncrs += er32(TNCRS); | |
3843 | } | |
3844 | adapter->stats.colc += hw->mac.collision_delta; | |
a4f58f54 | 3845 | } |
8c7bbb92 | 3846 | |
bc7f75fa AK |
3847 | adapter->stats.xonrxc += er32(XONRXC); |
3848 | adapter->stats.xontxc += er32(XONTXC); | |
3849 | adapter->stats.xoffrxc += er32(XOFFRXC); | |
3850 | adapter->stats.xofftxc += er32(XOFFTXC); | |
bc7f75fa | 3851 | adapter->stats.gptc += er32(GPTC); |
7c25769f BA |
3852 | adapter->stats.gotc += er32(GOTCL); |
3853 | er32(GOTCH); /* Clear gotc */ | |
bc7f75fa AK |
3854 | adapter->stats.rnbc += er32(RNBC); |
3855 | adapter->stats.ruc += er32(RUC); | |
bc7f75fa AK |
3856 | |
3857 | adapter->stats.mptc += er32(MPTC); | |
3858 | adapter->stats.bptc += er32(BPTC); | |
3859 | ||
3860 | /* used for adaptive IFS */ | |
3861 | ||
3862 | hw->mac.tx_packet_delta = er32(TPT); | |
3863 | adapter->stats.tpt += hw->mac.tx_packet_delta; | |
bc7f75fa AK |
3864 | |
3865 | adapter->stats.algnerrc += er32(ALGNERRC); | |
3866 | adapter->stats.rxerrc += er32(RXERRC); | |
bc7f75fa AK |
3867 | adapter->stats.cexterr += er32(CEXTERR); |
3868 | adapter->stats.tsctc += er32(TSCTC); | |
3869 | adapter->stats.tsctfc += er32(TSCTFC); | |
3870 | ||
bc7f75fa | 3871 | /* Fill out the OS statistics structure */ |
7274c20f AK |
3872 | netdev->stats.multicast = adapter->stats.mprc; |
3873 | netdev->stats.collisions = adapter->stats.colc; | |
bc7f75fa AK |
3874 | |
3875 | /* Rx Errors */ | |
3876 | ||
ad68076e BA |
3877 | /* |
3878 | * RLEC on some newer hardware can be incorrect so build | |
3879 | * our own version based on RUC and ROC | |
3880 | */ | |
7274c20f | 3881 | netdev->stats.rx_errors = adapter->stats.rxerrc + |
bc7f75fa AK |
3882 | adapter->stats.crcerrs + adapter->stats.algnerrc + |
3883 | adapter->stats.ruc + adapter->stats.roc + | |
3884 | adapter->stats.cexterr; | |
7274c20f | 3885 | netdev->stats.rx_length_errors = adapter->stats.ruc + |
bc7f75fa | 3886 | adapter->stats.roc; |
7274c20f AK |
3887 | netdev->stats.rx_crc_errors = adapter->stats.crcerrs; |
3888 | netdev->stats.rx_frame_errors = adapter->stats.algnerrc; | |
3889 | netdev->stats.rx_missed_errors = adapter->stats.mpc; | |
bc7f75fa AK |
3890 | |
3891 | /* Tx Errors */ | |
7274c20f | 3892 | netdev->stats.tx_errors = adapter->stats.ecol + |
bc7f75fa | 3893 | adapter->stats.latecol; |
7274c20f AK |
3894 | netdev->stats.tx_aborted_errors = adapter->stats.ecol; |
3895 | netdev->stats.tx_window_errors = adapter->stats.latecol; | |
3896 | netdev->stats.tx_carrier_errors = adapter->stats.tncrs; | |
bc7f75fa AK |
3897 | |
3898 | /* Tx Dropped needs to be maintained elsewhere */ | |
3899 | ||
bc7f75fa AK |
3900 | /* Management Stats */ |
3901 | adapter->stats.mgptc += er32(MGTPTC); | |
3902 | adapter->stats.mgprc += er32(MGTPRC); | |
3903 | adapter->stats.mgpdc += er32(MGTPDC); | |
bc7f75fa AK |
3904 | } |
3905 | ||
7c25769f BA |
3906 | /** |
3907 | * e1000_phy_read_status - Update the PHY register status snapshot | |
3908 | * @adapter: board private structure | |
3909 | **/ | |
3910 | static void e1000_phy_read_status(struct e1000_adapter *adapter) | |
3911 | { | |
3912 | struct e1000_hw *hw = &adapter->hw; | |
3913 | struct e1000_phy_regs *phy = &adapter->phy_regs; | |
3914 | int ret_val; | |
7c25769f BA |
3915 | |
3916 | if ((er32(STATUS) & E1000_STATUS_LU) && | |
3917 | (adapter->hw.phy.media_type == e1000_media_type_copper)) { | |
3918 | ret_val = e1e_rphy(hw, PHY_CONTROL, &phy->bmcr); | |
3919 | ret_val |= e1e_rphy(hw, PHY_STATUS, &phy->bmsr); | |
3920 | ret_val |= e1e_rphy(hw, PHY_AUTONEG_ADV, &phy->advertise); | |
3921 | ret_val |= e1e_rphy(hw, PHY_LP_ABILITY, &phy->lpa); | |
3922 | ret_val |= e1e_rphy(hw, PHY_AUTONEG_EXP, &phy->expansion); | |
3923 | ret_val |= e1e_rphy(hw, PHY_1000T_CTRL, &phy->ctrl1000); | |
3924 | ret_val |= e1e_rphy(hw, PHY_1000T_STATUS, &phy->stat1000); | |
3925 | ret_val |= e1e_rphy(hw, PHY_EXT_STATUS, &phy->estatus); | |
3926 | if (ret_val) | |
44defeb3 | 3927 | e_warn("Error reading PHY register\n"); |
7c25769f BA |
3928 | } else { |
3929 | /* | |
3930 | * Do not read PHY registers if link is not up | |
3931 | * Set values to typical power-on defaults | |
3932 | */ | |
3933 | phy->bmcr = (BMCR_SPEED1000 | BMCR_ANENABLE | BMCR_FULLDPLX); | |
3934 | phy->bmsr = (BMSR_100FULL | BMSR_100HALF | BMSR_10FULL | | |
3935 | BMSR_10HALF | BMSR_ESTATEN | BMSR_ANEGCAPABLE | | |
3936 | BMSR_ERCAP); | |
3937 | phy->advertise = (ADVERTISE_PAUSE_ASYM | ADVERTISE_PAUSE_CAP | | |
3938 | ADVERTISE_ALL | ADVERTISE_CSMA); | |
3939 | phy->lpa = 0; | |
3940 | phy->expansion = EXPANSION_ENABLENPAGE; | |
3941 | phy->ctrl1000 = ADVERTISE_1000FULL; | |
3942 | phy->stat1000 = 0; | |
3943 | phy->estatus = (ESTATUS_1000_TFULL | ESTATUS_1000_THALF); | |
3944 | } | |
7c25769f BA |
3945 | } |
3946 | ||
bc7f75fa AK |
3947 | static void e1000_print_link_info(struct e1000_adapter *adapter) |
3948 | { | |
bc7f75fa AK |
3949 | struct e1000_hw *hw = &adapter->hw; |
3950 | u32 ctrl = er32(CTRL); | |
3951 | ||
8f12fe86 BA |
3952 | /* Link status message must follow this format for user tools */ |
3953 | printk(KERN_INFO "e1000e: %s NIC Link is Up %d Mbps %s, " | |
3954 | "Flow Control: %s\n", | |
3955 | adapter->netdev->name, | |
44defeb3 JK |
3956 | adapter->link_speed, |
3957 | (adapter->link_duplex == FULL_DUPLEX) ? | |
3958 | "Full Duplex" : "Half Duplex", | |
3959 | ((ctrl & E1000_CTRL_TFCE) && (ctrl & E1000_CTRL_RFCE)) ? | |
3960 | "RX/TX" : | |
3961 | ((ctrl & E1000_CTRL_RFCE) ? "RX" : | |
3962 | ((ctrl & E1000_CTRL_TFCE) ? "TX" : "None" ))); | |
bc7f75fa AK |
3963 | } |
3964 | ||
0c6bdb30 | 3965 | static bool e1000e_has_link(struct e1000_adapter *adapter) |
318a94d6 JK |
3966 | { |
3967 | struct e1000_hw *hw = &adapter->hw; | |
3968 | bool link_active = 0; | |
3969 | s32 ret_val = 0; | |
3970 | ||
3971 | /* | |
3972 | * get_link_status is set on LSC (link status) interrupt or | |
3973 | * Rx sequence error interrupt. get_link_status will stay | |
3974 | * false until the check_for_link establishes link | |
3975 | * for copper adapters ONLY | |
3976 | */ | |
3977 | switch (hw->phy.media_type) { | |
3978 | case e1000_media_type_copper: | |
3979 | if (hw->mac.get_link_status) { | |
3980 | ret_val = hw->mac.ops.check_for_link(hw); | |
3981 | link_active = !hw->mac.get_link_status; | |
3982 | } else { | |
3983 | link_active = 1; | |
3984 | } | |
3985 | break; | |
3986 | case e1000_media_type_fiber: | |
3987 | ret_val = hw->mac.ops.check_for_link(hw); | |
3988 | link_active = !!(er32(STATUS) & E1000_STATUS_LU); | |
3989 | break; | |
3990 | case e1000_media_type_internal_serdes: | |
3991 | ret_val = hw->mac.ops.check_for_link(hw); | |
3992 | link_active = adapter->hw.mac.serdes_has_link; | |
3993 | break; | |
3994 | default: | |
3995 | case e1000_media_type_unknown: | |
3996 | break; | |
3997 | } | |
3998 | ||
3999 | if ((ret_val == E1000_ERR_PHY) && (hw->phy.type == e1000_phy_igp_3) && | |
4000 | (er32(CTRL) & E1000_PHY_CTRL_GBE_DISABLE)) { | |
4001 | /* See e1000_kmrn_lock_loss_workaround_ich8lan() */ | |
44defeb3 | 4002 | e_info("Gigabit has been disabled, downgrading speed\n"); |
318a94d6 JK |
4003 | } |
4004 | ||
4005 | return link_active; | |
4006 | } | |
4007 | ||
4008 | static void e1000e_enable_receives(struct e1000_adapter *adapter) | |
4009 | { | |
4010 | /* make sure the receive unit is started */ | |
4011 | if ((adapter->flags & FLAG_RX_NEEDS_RESTART) && | |
4012 | (adapter->flags & FLAG_RX_RESTART_NOW)) { | |
4013 | struct e1000_hw *hw = &adapter->hw; | |
4014 | u32 rctl = er32(RCTL); | |
4015 | ew32(RCTL, rctl | E1000_RCTL_EN); | |
4016 | adapter->flags &= ~FLAG_RX_RESTART_NOW; | |
4017 | } | |
4018 | } | |
4019 | ||
bc7f75fa AK |
4020 | /** |
4021 | * e1000_watchdog - Timer Call-back | |
4022 | * @data: pointer to adapter cast into an unsigned long | |
4023 | **/ | |
4024 | static void e1000_watchdog(unsigned long data) | |
4025 | { | |
4026 | struct e1000_adapter *adapter = (struct e1000_adapter *) data; | |
4027 | ||
4028 | /* Do the rest outside of interrupt context */ | |
4029 | schedule_work(&adapter->watchdog_task); | |
4030 | ||
4031 | /* TODO: make this use queue_delayed_work() */ | |
4032 | } | |
4033 | ||
4034 | static void e1000_watchdog_task(struct work_struct *work) | |
4035 | { | |
4036 | struct e1000_adapter *adapter = container_of(work, | |
4037 | struct e1000_adapter, watchdog_task); | |
bc7f75fa AK |
4038 | struct net_device *netdev = adapter->netdev; |
4039 | struct e1000_mac_info *mac = &adapter->hw.mac; | |
75eb0fad | 4040 | struct e1000_phy_info *phy = &adapter->hw.phy; |
bc7f75fa AK |
4041 | struct e1000_ring *tx_ring = adapter->tx_ring; |
4042 | struct e1000_hw *hw = &adapter->hw; | |
4043 | u32 link, tctl; | |
bc7f75fa AK |
4044 | int tx_pending = 0; |
4045 | ||
b405e8df | 4046 | link = e1000e_has_link(adapter); |
318a94d6 | 4047 | if ((netif_carrier_ok(netdev)) && link) { |
23606cf5 RW |
4048 | /* Cancel scheduled suspend requests. */ |
4049 | pm_runtime_resume(netdev->dev.parent); | |
4050 | ||
318a94d6 | 4051 | e1000e_enable_receives(adapter); |
bc7f75fa | 4052 | goto link_up; |
bc7f75fa AK |
4053 | } |
4054 | ||
4055 | if ((e1000e_enable_tx_pkt_filtering(hw)) && | |
4056 | (adapter->mng_vlan_id != adapter->hw.mng_cookie.vlan_id)) | |
4057 | e1000_update_mng_vlan(adapter); | |
4058 | ||
bc7f75fa AK |
4059 | if (link) { |
4060 | if (!netif_carrier_ok(netdev)) { | |
4061 | bool txb2b = 1; | |
23606cf5 RW |
4062 | |
4063 | /* Cancel scheduled suspend requests. */ | |
4064 | pm_runtime_resume(netdev->dev.parent); | |
4065 | ||
318a94d6 | 4066 | /* update snapshot of PHY registers on LSC */ |
7c25769f | 4067 | e1000_phy_read_status(adapter); |
bc7f75fa AK |
4068 | mac->ops.get_link_up_info(&adapter->hw, |
4069 | &adapter->link_speed, | |
4070 | &adapter->link_duplex); | |
4071 | e1000_print_link_info(adapter); | |
f4187b56 BA |
4072 | /* |
4073 | * On supported PHYs, check for duplex mismatch only | |
4074 | * if link has autonegotiated at 10/100 half | |
4075 | */ | |
4076 | if ((hw->phy.type == e1000_phy_igp_3 || | |
4077 | hw->phy.type == e1000_phy_bm) && | |
4078 | (hw->mac.autoneg == true) && | |
4079 | (adapter->link_speed == SPEED_10 || | |
4080 | adapter->link_speed == SPEED_100) && | |
4081 | (adapter->link_duplex == HALF_DUPLEX)) { | |
4082 | u16 autoneg_exp; | |
4083 | ||
4084 | e1e_rphy(hw, PHY_AUTONEG_EXP, &autoneg_exp); | |
4085 | ||
4086 | if (!(autoneg_exp & NWAY_ER_LP_NWAY_CAPS)) | |
4087 | e_info("Autonegotiated half duplex but" | |
4088 | " link partner cannot autoneg. " | |
4089 | " Try forcing full duplex if " | |
4090 | "link gets many collisions.\n"); | |
4091 | } | |
4092 | ||
f49c57e1 | 4093 | /* adjust timeout factor according to speed/duplex */ |
bc7f75fa AK |
4094 | adapter->tx_timeout_factor = 1; |
4095 | switch (adapter->link_speed) { | |
4096 | case SPEED_10: | |
4097 | txb2b = 0; | |
10f1b492 | 4098 | adapter->tx_timeout_factor = 16; |
bc7f75fa AK |
4099 | break; |
4100 | case SPEED_100: | |
4101 | txb2b = 0; | |
4c86e0b9 | 4102 | adapter->tx_timeout_factor = 10; |
bc7f75fa AK |
4103 | break; |
4104 | } | |
4105 | ||
ad68076e BA |
4106 | /* |
4107 | * workaround: re-program speed mode bit after | |
4108 | * link-up event | |
4109 | */ | |
bc7f75fa AK |
4110 | if ((adapter->flags & FLAG_TARC_SPEED_MODE_BIT) && |
4111 | !txb2b) { | |
4112 | u32 tarc0; | |
e9ec2c0f | 4113 | tarc0 = er32(TARC(0)); |
bc7f75fa | 4114 | tarc0 &= ~SPEED_MODE_BIT; |
e9ec2c0f | 4115 | ew32(TARC(0), tarc0); |
bc7f75fa AK |
4116 | } |
4117 | ||
ad68076e BA |
4118 | /* |
4119 | * disable TSO for pcie and 10/100 speeds, to avoid | |
4120 | * some hardware issues | |
4121 | */ | |
bc7f75fa AK |
4122 | if (!(adapter->flags & FLAG_TSO_FORCE)) { |
4123 | switch (adapter->link_speed) { | |
4124 | case SPEED_10: | |
4125 | case SPEED_100: | |
44defeb3 | 4126 | e_info("10/100 speed: disabling TSO\n"); |
bc7f75fa AK |
4127 | netdev->features &= ~NETIF_F_TSO; |
4128 | netdev->features &= ~NETIF_F_TSO6; | |
4129 | break; | |
4130 | case SPEED_1000: | |
4131 | netdev->features |= NETIF_F_TSO; | |
4132 | netdev->features |= NETIF_F_TSO6; | |
4133 | break; | |
4134 | default: | |
4135 | /* oops */ | |
4136 | break; | |
4137 | } | |
4138 | } | |
4139 | ||
ad68076e BA |
4140 | /* |
4141 | * enable transmits in the hardware, need to do this | |
4142 | * after setting TARC(0) | |
4143 | */ | |
bc7f75fa AK |
4144 | tctl = er32(TCTL); |
4145 | tctl |= E1000_TCTL_EN; | |
4146 | ew32(TCTL, tctl); | |
4147 | ||
75eb0fad BA |
4148 | /* |
4149 | * Perform any post-link-up configuration before | |
4150 | * reporting link up. | |
4151 | */ | |
4152 | if (phy->ops.cfg_on_link_up) | |
4153 | phy->ops.cfg_on_link_up(hw); | |
4154 | ||
bc7f75fa | 4155 | netif_carrier_on(netdev); |
bc7f75fa AK |
4156 | |
4157 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
4158 | mod_timer(&adapter->phy_info_timer, | |
4159 | round_jiffies(jiffies + 2 * HZ)); | |
bc7f75fa AK |
4160 | } |
4161 | } else { | |
4162 | if (netif_carrier_ok(netdev)) { | |
4163 | adapter->link_speed = 0; | |
4164 | adapter->link_duplex = 0; | |
8f12fe86 BA |
4165 | /* Link status message must follow this format */ |
4166 | printk(KERN_INFO "e1000e: %s NIC Link is Down\n", | |
4167 | adapter->netdev->name); | |
bc7f75fa | 4168 | netif_carrier_off(netdev); |
bc7f75fa AK |
4169 | if (!test_bit(__E1000_DOWN, &adapter->state)) |
4170 | mod_timer(&adapter->phy_info_timer, | |
4171 | round_jiffies(jiffies + 2 * HZ)); | |
4172 | ||
4173 | if (adapter->flags & FLAG_RX_NEEDS_RESTART) | |
4174 | schedule_work(&adapter->reset_task); | |
23606cf5 RW |
4175 | else |
4176 | pm_schedule_suspend(netdev->dev.parent, | |
4177 | LINK_TIMEOUT); | |
bc7f75fa AK |
4178 | } |
4179 | } | |
4180 | ||
4181 | link_up: | |
4182 | e1000e_update_stats(adapter); | |
4183 | ||
4184 | mac->tx_packet_delta = adapter->stats.tpt - adapter->tpt_old; | |
4185 | adapter->tpt_old = adapter->stats.tpt; | |
4186 | mac->collision_delta = adapter->stats.colc - adapter->colc_old; | |
4187 | adapter->colc_old = adapter->stats.colc; | |
4188 | ||
7c25769f BA |
4189 | adapter->gorc = adapter->stats.gorc - adapter->gorc_old; |
4190 | adapter->gorc_old = adapter->stats.gorc; | |
4191 | adapter->gotc = adapter->stats.gotc - adapter->gotc_old; | |
4192 | adapter->gotc_old = adapter->stats.gotc; | |
bc7f75fa AK |
4193 | |
4194 | e1000e_update_adaptive(&adapter->hw); | |
4195 | ||
4196 | if (!netif_carrier_ok(netdev)) { | |
4197 | tx_pending = (e1000_desc_unused(tx_ring) + 1 < | |
4198 | tx_ring->count); | |
4199 | if (tx_pending) { | |
ad68076e BA |
4200 | /* |
4201 | * We've lost link, so the controller stops DMA, | |
bc7f75fa AK |
4202 | * but we've got queued Tx work that's never going |
4203 | * to get done, so reset controller to flush Tx. | |
ad68076e BA |
4204 | * (Do the reset outside of interrupt context). |
4205 | */ | |
bc7f75fa AK |
4206 | adapter->tx_timeout_count++; |
4207 | schedule_work(&adapter->reset_task); | |
c2d5ab49 JB |
4208 | /* return immediately since reset is imminent */ |
4209 | return; | |
bc7f75fa AK |
4210 | } |
4211 | } | |
4212 | ||
eab2abf5 JB |
4213 | /* Simple mode for Interrupt Throttle Rate (ITR) */ |
4214 | if (adapter->itr_setting == 4) { | |
4215 | /* | |
4216 | * Symmetric Tx/Rx gets a reduced ITR=2000; | |
4217 | * Total asymmetrical Tx or Rx gets ITR=8000; | |
4218 | * everyone else is between 2000-8000. | |
4219 | */ | |
4220 | u32 goc = (adapter->gotc + adapter->gorc) / 10000; | |
4221 | u32 dif = (adapter->gotc > adapter->gorc ? | |
4222 | adapter->gotc - adapter->gorc : | |
4223 | adapter->gorc - adapter->gotc) / 10000; | |
4224 | u32 itr = goc > 0 ? (dif * 6000 / goc + 2000) : 8000; | |
4225 | ||
4226 | ew32(ITR, 1000000000 / (itr * 256)); | |
4227 | } | |
4228 | ||
ad68076e | 4229 | /* Cause software interrupt to ensure Rx ring is cleaned */ |
4662e82b BA |
4230 | if (adapter->msix_entries) |
4231 | ew32(ICS, adapter->rx_ring->ims_val); | |
4232 | else | |
4233 | ew32(ICS, E1000_ICS_RXDMT0); | |
bc7f75fa AK |
4234 | |
4235 | /* Force detection of hung controller every watchdog period */ | |
4236 | adapter->detect_tx_hung = 1; | |
4237 | ||
ad68076e BA |
4238 | /* |
4239 | * With 82571 controllers, LAA may be overwritten due to controller | |
4240 | * reset from the other port. Set the appropriate LAA in RAR[0] | |
4241 | */ | |
bc7f75fa AK |
4242 | if (e1000e_get_laa_state_82571(hw)) |
4243 | e1000e_rar_set(hw, adapter->hw.mac.addr, 0); | |
4244 | ||
4245 | /* Reset the timer */ | |
4246 | if (!test_bit(__E1000_DOWN, &adapter->state)) | |
4247 | mod_timer(&adapter->watchdog_timer, | |
4248 | round_jiffies(jiffies + 2 * HZ)); | |
4249 | } | |
4250 | ||
4251 | #define E1000_TX_FLAGS_CSUM 0x00000001 | |
4252 | #define E1000_TX_FLAGS_VLAN 0x00000002 | |
4253 | #define E1000_TX_FLAGS_TSO 0x00000004 | |
4254 | #define E1000_TX_FLAGS_IPV4 0x00000008 | |
4255 | #define E1000_TX_FLAGS_VLAN_MASK 0xffff0000 | |
4256 | #define E1000_TX_FLAGS_VLAN_SHIFT 16 | |
4257 | ||
4258 | static int e1000_tso(struct e1000_adapter *adapter, | |
4259 | struct sk_buff *skb) | |
4260 | { | |
4261 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
4262 | struct e1000_context_desc *context_desc; | |
4263 | struct e1000_buffer *buffer_info; | |
4264 | unsigned int i; | |
4265 | u32 cmd_length = 0; | |
4266 | u16 ipcse = 0, tucse, mss; | |
4267 | u8 ipcss, ipcso, tucss, tucso, hdr_len; | |
4268 | int err; | |
4269 | ||
3d5e33c9 BA |
4270 | if (!skb_is_gso(skb)) |
4271 | return 0; | |
bc7f75fa | 4272 | |
3d5e33c9 BA |
4273 | if (skb_header_cloned(skb)) { |
4274 | err = pskb_expand_head(skb, 0, 0, GFP_ATOMIC); | |
4275 | if (err) | |
4276 | return err; | |
bc7f75fa AK |
4277 | } |
4278 | ||
3d5e33c9 BA |
4279 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
4280 | mss = skb_shinfo(skb)->gso_size; | |
4281 | if (skb->protocol == htons(ETH_P_IP)) { | |
4282 | struct iphdr *iph = ip_hdr(skb); | |
4283 | iph->tot_len = 0; | |
4284 | iph->check = 0; | |
4285 | tcp_hdr(skb)->check = ~csum_tcpudp_magic(iph->saddr, iph->daddr, | |
4286 | 0, IPPROTO_TCP, 0); | |
4287 | cmd_length = E1000_TXD_CMD_IP; | |
4288 | ipcse = skb_transport_offset(skb) - 1; | |
8e1e8a47 | 4289 | } else if (skb_is_gso_v6(skb)) { |
3d5e33c9 BA |
4290 | ipv6_hdr(skb)->payload_len = 0; |
4291 | tcp_hdr(skb)->check = ~csum_ipv6_magic(&ipv6_hdr(skb)->saddr, | |
4292 | &ipv6_hdr(skb)->daddr, | |
4293 | 0, IPPROTO_TCP, 0); | |
4294 | ipcse = 0; | |
4295 | } | |
4296 | ipcss = skb_network_offset(skb); | |
4297 | ipcso = (void *)&(ip_hdr(skb)->check) - (void *)skb->data; | |
4298 | tucss = skb_transport_offset(skb); | |
4299 | tucso = (void *)&(tcp_hdr(skb)->check) - (void *)skb->data; | |
4300 | tucse = 0; | |
4301 | ||
4302 | cmd_length |= (E1000_TXD_CMD_DEXT | E1000_TXD_CMD_TSE | | |
4303 | E1000_TXD_CMD_TCP | (skb->len - (hdr_len))); | |
4304 | ||
4305 | i = tx_ring->next_to_use; | |
4306 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
4307 | buffer_info = &tx_ring->buffer_info[i]; | |
4308 | ||
4309 | context_desc->lower_setup.ip_fields.ipcss = ipcss; | |
4310 | context_desc->lower_setup.ip_fields.ipcso = ipcso; | |
4311 | context_desc->lower_setup.ip_fields.ipcse = cpu_to_le16(ipcse); | |
4312 | context_desc->upper_setup.tcp_fields.tucss = tucss; | |
4313 | context_desc->upper_setup.tcp_fields.tucso = tucso; | |
4314 | context_desc->upper_setup.tcp_fields.tucse = cpu_to_le16(tucse); | |
4315 | context_desc->tcp_seg_setup.fields.mss = cpu_to_le16(mss); | |
4316 | context_desc->tcp_seg_setup.fields.hdr_len = hdr_len; | |
4317 | context_desc->cmd_and_length = cpu_to_le32(cmd_length); | |
4318 | ||
4319 | buffer_info->time_stamp = jiffies; | |
4320 | buffer_info->next_to_watch = i; | |
4321 | ||
4322 | i++; | |
4323 | if (i == tx_ring->count) | |
4324 | i = 0; | |
4325 | tx_ring->next_to_use = i; | |
4326 | ||
4327 | return 1; | |
bc7f75fa AK |
4328 | } |
4329 | ||
4330 | static bool e1000_tx_csum(struct e1000_adapter *adapter, struct sk_buff *skb) | |
4331 | { | |
4332 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
4333 | struct e1000_context_desc *context_desc; | |
4334 | struct e1000_buffer *buffer_info; | |
4335 | unsigned int i; | |
4336 | u8 css; | |
af807c82 | 4337 | u32 cmd_len = E1000_TXD_CMD_DEXT; |
5f66f208 | 4338 | __be16 protocol; |
bc7f75fa | 4339 | |
af807c82 DG |
4340 | if (skb->ip_summed != CHECKSUM_PARTIAL) |
4341 | return 0; | |
bc7f75fa | 4342 | |
5f66f208 AJ |
4343 | if (skb->protocol == cpu_to_be16(ETH_P_8021Q)) |
4344 | protocol = vlan_eth_hdr(skb)->h_vlan_encapsulated_proto; | |
4345 | else | |
4346 | protocol = skb->protocol; | |
4347 | ||
3f518390 | 4348 | switch (protocol) { |
09640e63 | 4349 | case cpu_to_be16(ETH_P_IP): |
af807c82 DG |
4350 | if (ip_hdr(skb)->protocol == IPPROTO_TCP) |
4351 | cmd_len |= E1000_TXD_CMD_TCP; | |
4352 | break; | |
09640e63 | 4353 | case cpu_to_be16(ETH_P_IPV6): |
af807c82 DG |
4354 | /* XXX not handling all IPV6 headers */ |
4355 | if (ipv6_hdr(skb)->nexthdr == IPPROTO_TCP) | |
4356 | cmd_len |= E1000_TXD_CMD_TCP; | |
4357 | break; | |
4358 | default: | |
4359 | if (unlikely(net_ratelimit())) | |
5f66f208 AJ |
4360 | e_warn("checksum_partial proto=%x!\n", |
4361 | be16_to_cpu(protocol)); | |
af807c82 | 4362 | break; |
bc7f75fa AK |
4363 | } |
4364 | ||
af807c82 DG |
4365 | css = skb_transport_offset(skb); |
4366 | ||
4367 | i = tx_ring->next_to_use; | |
4368 | buffer_info = &tx_ring->buffer_info[i]; | |
4369 | context_desc = E1000_CONTEXT_DESC(*tx_ring, i); | |
4370 | ||
4371 | context_desc->lower_setup.ip_config = 0; | |
4372 | context_desc->upper_setup.tcp_fields.tucss = css; | |
4373 | context_desc->upper_setup.tcp_fields.tucso = | |
4374 | css + skb->csum_offset; | |
4375 | context_desc->upper_setup.tcp_fields.tucse = 0; | |
4376 | context_desc->tcp_seg_setup.data = 0; | |
4377 | context_desc->cmd_and_length = cpu_to_le32(cmd_len); | |
4378 | ||
4379 | buffer_info->time_stamp = jiffies; | |
4380 | buffer_info->next_to_watch = i; | |
4381 | ||
4382 | i++; | |
4383 | if (i == tx_ring->count) | |
4384 | i = 0; | |
4385 | tx_ring->next_to_use = i; | |
4386 | ||
4387 | return 1; | |
bc7f75fa AK |
4388 | } |
4389 | ||
4390 | #define E1000_MAX_PER_TXD 8192 | |
4391 | #define E1000_MAX_TXD_PWR 12 | |
4392 | ||
4393 | static int e1000_tx_map(struct e1000_adapter *adapter, | |
4394 | struct sk_buff *skb, unsigned int first, | |
4395 | unsigned int max_per_txd, unsigned int nr_frags, | |
4396 | unsigned int mss) | |
4397 | { | |
4398 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
03b1320d | 4399 | struct pci_dev *pdev = adapter->pdev; |
1b7719c4 | 4400 | struct e1000_buffer *buffer_info; |
8ddc951c | 4401 | unsigned int len = skb_headlen(skb); |
03b1320d | 4402 | unsigned int offset = 0, size, count = 0, i; |
9ed318d5 | 4403 | unsigned int f, bytecount, segs; |
bc7f75fa AK |
4404 | |
4405 | i = tx_ring->next_to_use; | |
4406 | ||
4407 | while (len) { | |
1b7719c4 | 4408 | buffer_info = &tx_ring->buffer_info[i]; |
bc7f75fa AK |
4409 | size = min(len, max_per_txd); |
4410 | ||
bc7f75fa | 4411 | buffer_info->length = size; |
bc7f75fa | 4412 | buffer_info->time_stamp = jiffies; |
bc7f75fa | 4413 | buffer_info->next_to_watch = i; |
0be3f55f NN |
4414 | buffer_info->dma = dma_map_single(&pdev->dev, |
4415 | skb->data + offset, | |
4416 | size, DMA_TO_DEVICE); | |
03b1320d | 4417 | buffer_info->mapped_as_page = false; |
0be3f55f | 4418 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
03b1320d | 4419 | goto dma_error; |
bc7f75fa AK |
4420 | |
4421 | len -= size; | |
4422 | offset += size; | |
03b1320d | 4423 | count++; |
1b7719c4 AD |
4424 | |
4425 | if (len) { | |
4426 | i++; | |
4427 | if (i == tx_ring->count) | |
4428 | i = 0; | |
4429 | } | |
bc7f75fa AK |
4430 | } |
4431 | ||
4432 | for (f = 0; f < nr_frags; f++) { | |
4433 | struct skb_frag_struct *frag; | |
4434 | ||
4435 | frag = &skb_shinfo(skb)->frags[f]; | |
4436 | len = frag->size; | |
03b1320d | 4437 | offset = frag->page_offset; |
bc7f75fa AK |
4438 | |
4439 | while (len) { | |
1b7719c4 AD |
4440 | i++; |
4441 | if (i == tx_ring->count) | |
4442 | i = 0; | |
4443 | ||
bc7f75fa AK |
4444 | buffer_info = &tx_ring->buffer_info[i]; |
4445 | size = min(len, max_per_txd); | |
bc7f75fa AK |
4446 | |
4447 | buffer_info->length = size; | |
4448 | buffer_info->time_stamp = jiffies; | |
bc7f75fa | 4449 | buffer_info->next_to_watch = i; |
0be3f55f | 4450 | buffer_info->dma = dma_map_page(&pdev->dev, frag->page, |
03b1320d | 4451 | offset, size, |
0be3f55f | 4452 | DMA_TO_DEVICE); |
03b1320d | 4453 | buffer_info->mapped_as_page = true; |
0be3f55f | 4454 | if (dma_mapping_error(&pdev->dev, buffer_info->dma)) |
03b1320d | 4455 | goto dma_error; |
bc7f75fa AK |
4456 | |
4457 | len -= size; | |
4458 | offset += size; | |
4459 | count++; | |
bc7f75fa AK |
4460 | } |
4461 | } | |
4462 | ||
9ed318d5 TH |
4463 | segs = skb_shinfo(skb)->gso_segs ?: 1; |
4464 | /* multiply data chunks by size of headers */ | |
4465 | bytecount = ((segs - 1) * skb_headlen(skb)) + skb->len; | |
4466 | ||
bc7f75fa | 4467 | tx_ring->buffer_info[i].skb = skb; |
9ed318d5 TH |
4468 | tx_ring->buffer_info[i].segs = segs; |
4469 | tx_ring->buffer_info[i].bytecount = bytecount; | |
bc7f75fa AK |
4470 | tx_ring->buffer_info[first].next_to_watch = i; |
4471 | ||
4472 | return count; | |
03b1320d AD |
4473 | |
4474 | dma_error: | |
4475 | dev_err(&pdev->dev, "TX DMA map failed\n"); | |
4476 | buffer_info->dma = 0; | |
c1fa347f | 4477 | if (count) |
03b1320d | 4478 | count--; |
c1fa347f RK |
4479 | |
4480 | while (count--) { | |
4481 | if (i==0) | |
03b1320d | 4482 | i += tx_ring->count; |
c1fa347f | 4483 | i--; |
03b1320d AD |
4484 | buffer_info = &tx_ring->buffer_info[i]; |
4485 | e1000_put_txbuf(adapter, buffer_info);; | |
4486 | } | |
4487 | ||
4488 | return 0; | |
bc7f75fa AK |
4489 | } |
4490 | ||
4491 | static void e1000_tx_queue(struct e1000_adapter *adapter, | |
4492 | int tx_flags, int count) | |
4493 | { | |
4494 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
4495 | struct e1000_tx_desc *tx_desc = NULL; | |
4496 | struct e1000_buffer *buffer_info; | |
4497 | u32 txd_upper = 0, txd_lower = E1000_TXD_CMD_IFCS; | |
4498 | unsigned int i; | |
4499 | ||
4500 | if (tx_flags & E1000_TX_FLAGS_TSO) { | |
4501 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D | | |
4502 | E1000_TXD_CMD_TSE; | |
4503 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
4504 | ||
4505 | if (tx_flags & E1000_TX_FLAGS_IPV4) | |
4506 | txd_upper |= E1000_TXD_POPTS_IXSM << 8; | |
4507 | } | |
4508 | ||
4509 | if (tx_flags & E1000_TX_FLAGS_CSUM) { | |
4510 | txd_lower |= E1000_TXD_CMD_DEXT | E1000_TXD_DTYP_D; | |
4511 | txd_upper |= E1000_TXD_POPTS_TXSM << 8; | |
4512 | } | |
4513 | ||
4514 | if (tx_flags & E1000_TX_FLAGS_VLAN) { | |
4515 | txd_lower |= E1000_TXD_CMD_VLE; | |
4516 | txd_upper |= (tx_flags & E1000_TX_FLAGS_VLAN_MASK); | |
4517 | } | |
4518 | ||
4519 | i = tx_ring->next_to_use; | |
4520 | ||
4521 | while (count--) { | |
4522 | buffer_info = &tx_ring->buffer_info[i]; | |
4523 | tx_desc = E1000_TX_DESC(*tx_ring, i); | |
4524 | tx_desc->buffer_addr = cpu_to_le64(buffer_info->dma); | |
4525 | tx_desc->lower.data = | |
4526 | cpu_to_le32(txd_lower | buffer_info->length); | |
4527 | tx_desc->upper.data = cpu_to_le32(txd_upper); | |
4528 | ||
4529 | i++; | |
4530 | if (i == tx_ring->count) | |
4531 | i = 0; | |
4532 | } | |
4533 | ||
4534 | tx_desc->lower.data |= cpu_to_le32(adapter->txd_cmd); | |
4535 | ||
ad68076e BA |
4536 | /* |
4537 | * Force memory writes to complete before letting h/w | |
bc7f75fa AK |
4538 | * know there are new descriptors to fetch. (Only |
4539 | * applicable for weak-ordered memory model archs, | |
ad68076e BA |
4540 | * such as IA-64). |
4541 | */ | |
bc7f75fa AK |
4542 | wmb(); |
4543 | ||
4544 | tx_ring->next_to_use = i; | |
4545 | writel(i, adapter->hw.hw_addr + tx_ring->tail); | |
ad68076e BA |
4546 | /* |
4547 | * we need this if more than one processor can write to our tail | |
4548 | * at a time, it synchronizes IO on IA64/Altix systems | |
4549 | */ | |
bc7f75fa AK |
4550 | mmiowb(); |
4551 | } | |
4552 | ||
4553 | #define MINIMUM_DHCP_PACKET_SIZE 282 | |
4554 | static int e1000_transfer_dhcp_info(struct e1000_adapter *adapter, | |
4555 | struct sk_buff *skb) | |
4556 | { | |
4557 | struct e1000_hw *hw = &adapter->hw; | |
4558 | u16 length, offset; | |
4559 | ||
4560 | if (vlan_tx_tag_present(skb)) { | |
8e95a202 JP |
4561 | if (!((vlan_tx_tag_get(skb) == adapter->hw.mng_cookie.vlan_id) && |
4562 | (adapter->hw.mng_cookie.status & | |
bc7f75fa AK |
4563 | E1000_MNG_DHCP_COOKIE_STATUS_VLAN))) |
4564 | return 0; | |
4565 | } | |
4566 | ||
4567 | if (skb->len <= MINIMUM_DHCP_PACKET_SIZE) | |
4568 | return 0; | |
4569 | ||
4570 | if (((struct ethhdr *) skb->data)->h_proto != htons(ETH_P_IP)) | |
4571 | return 0; | |
4572 | ||
4573 | { | |
4574 | const struct iphdr *ip = (struct iphdr *)((u8 *)skb->data+14); | |
4575 | struct udphdr *udp; | |
4576 | ||
4577 | if (ip->protocol != IPPROTO_UDP) | |
4578 | return 0; | |
4579 | ||
4580 | udp = (struct udphdr *)((u8 *)ip + (ip->ihl << 2)); | |
4581 | if (ntohs(udp->dest) != 67) | |
4582 | return 0; | |
4583 | ||
4584 | offset = (u8 *)udp + 8 - skb->data; | |
4585 | length = skb->len - offset; | |
4586 | return e1000e_mng_write_dhcp_info(hw, (u8 *)udp + 8, length); | |
4587 | } | |
4588 | ||
4589 | return 0; | |
4590 | } | |
4591 | ||
4592 | static int __e1000_maybe_stop_tx(struct net_device *netdev, int size) | |
4593 | { | |
4594 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4595 | ||
4596 | netif_stop_queue(netdev); | |
ad68076e BA |
4597 | /* |
4598 | * Herbert's original patch had: | |
bc7f75fa | 4599 | * smp_mb__after_netif_stop_queue(); |
ad68076e BA |
4600 | * but since that doesn't exist yet, just open code it. |
4601 | */ | |
bc7f75fa AK |
4602 | smp_mb(); |
4603 | ||
ad68076e BA |
4604 | /* |
4605 | * We need to check again in a case another CPU has just | |
4606 | * made room available. | |
4607 | */ | |
bc7f75fa AK |
4608 | if (e1000_desc_unused(adapter->tx_ring) < size) |
4609 | return -EBUSY; | |
4610 | ||
4611 | /* A reprieve! */ | |
4612 | netif_start_queue(netdev); | |
4613 | ++adapter->restart_queue; | |
4614 | return 0; | |
4615 | } | |
4616 | ||
4617 | static int e1000_maybe_stop_tx(struct net_device *netdev, int size) | |
4618 | { | |
4619 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4620 | ||
4621 | if (e1000_desc_unused(adapter->tx_ring) >= size) | |
4622 | return 0; | |
4623 | return __e1000_maybe_stop_tx(netdev, size); | |
4624 | } | |
4625 | ||
4626 | #define TXD_USE_COUNT(S, X) (((S) >> (X)) + 1 ) | |
3b29a56d SH |
4627 | static netdev_tx_t e1000_xmit_frame(struct sk_buff *skb, |
4628 | struct net_device *netdev) | |
bc7f75fa AK |
4629 | { |
4630 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4631 | struct e1000_ring *tx_ring = adapter->tx_ring; | |
4632 | unsigned int first; | |
4633 | unsigned int max_per_txd = E1000_MAX_PER_TXD; | |
4634 | unsigned int max_txd_pwr = E1000_MAX_TXD_PWR; | |
4635 | unsigned int tx_flags = 0; | |
e743d313 | 4636 | unsigned int len = skb_headlen(skb); |
4e6c709c AK |
4637 | unsigned int nr_frags; |
4638 | unsigned int mss; | |
bc7f75fa AK |
4639 | int count = 0; |
4640 | int tso; | |
4641 | unsigned int f; | |
bc7f75fa AK |
4642 | |
4643 | if (test_bit(__E1000_DOWN, &adapter->state)) { | |
4644 | dev_kfree_skb_any(skb); | |
4645 | return NETDEV_TX_OK; | |
4646 | } | |
4647 | ||
4648 | if (skb->len <= 0) { | |
4649 | dev_kfree_skb_any(skb); | |
4650 | return NETDEV_TX_OK; | |
4651 | } | |
4652 | ||
4653 | mss = skb_shinfo(skb)->gso_size; | |
ad68076e BA |
4654 | /* |
4655 | * The controller does a simple calculation to | |
bc7f75fa AK |
4656 | * make sure there is enough room in the FIFO before |
4657 | * initiating the DMA for each buffer. The calc is: | |
4658 | * 4 = ceil(buffer len/mss). To make sure we don't | |
4659 | * overrun the FIFO, adjust the max buffer len if mss | |
ad68076e BA |
4660 | * drops. |
4661 | */ | |
bc7f75fa AK |
4662 | if (mss) { |
4663 | u8 hdr_len; | |
4664 | max_per_txd = min(mss << 2, max_per_txd); | |
4665 | max_txd_pwr = fls(max_per_txd) - 1; | |
4666 | ||
ad68076e BA |
4667 | /* |
4668 | * TSO Workaround for 82571/2/3 Controllers -- if skb->data | |
4669 | * points to just header, pull a few bytes of payload from | |
4670 | * frags into skb->data | |
4671 | */ | |
bc7f75fa | 4672 | hdr_len = skb_transport_offset(skb) + tcp_hdrlen(skb); |
ad68076e BA |
4673 | /* |
4674 | * we do this workaround for ES2LAN, but it is un-necessary, | |
4675 | * avoiding it could save a lot of cycles | |
4676 | */ | |
4e6c709c | 4677 | if (skb->data_len && (hdr_len == len)) { |
bc7f75fa AK |
4678 | unsigned int pull_size; |
4679 | ||
4680 | pull_size = min((unsigned int)4, skb->data_len); | |
4681 | if (!__pskb_pull_tail(skb, pull_size)) { | |
44defeb3 | 4682 | e_err("__pskb_pull_tail failed.\n"); |
bc7f75fa AK |
4683 | dev_kfree_skb_any(skb); |
4684 | return NETDEV_TX_OK; | |
4685 | } | |
e743d313 | 4686 | len = skb_headlen(skb); |
bc7f75fa AK |
4687 | } |
4688 | } | |
4689 | ||
4690 | /* reserve a descriptor for the offload context */ | |
4691 | if ((mss) || (skb->ip_summed == CHECKSUM_PARTIAL)) | |
4692 | count++; | |
4693 | count++; | |
4694 | ||
4695 | count += TXD_USE_COUNT(len, max_txd_pwr); | |
4696 | ||
4697 | nr_frags = skb_shinfo(skb)->nr_frags; | |
4698 | for (f = 0; f < nr_frags; f++) | |
4699 | count += TXD_USE_COUNT(skb_shinfo(skb)->frags[f].size, | |
4700 | max_txd_pwr); | |
4701 | ||
4702 | if (adapter->hw.mac.tx_pkt_filtering) | |
4703 | e1000_transfer_dhcp_info(adapter, skb); | |
4704 | ||
ad68076e BA |
4705 | /* |
4706 | * need: count + 2 desc gap to keep tail from touching | |
4707 | * head, otherwise try next time | |
4708 | */ | |
92af3e95 | 4709 | if (e1000_maybe_stop_tx(netdev, count + 2)) |
bc7f75fa | 4710 | return NETDEV_TX_BUSY; |
bc7f75fa AK |
4711 | |
4712 | if (adapter->vlgrp && vlan_tx_tag_present(skb)) { | |
4713 | tx_flags |= E1000_TX_FLAGS_VLAN; | |
4714 | tx_flags |= (vlan_tx_tag_get(skb) << E1000_TX_FLAGS_VLAN_SHIFT); | |
4715 | } | |
4716 | ||
4717 | first = tx_ring->next_to_use; | |
4718 | ||
4719 | tso = e1000_tso(adapter, skb); | |
4720 | if (tso < 0) { | |
4721 | dev_kfree_skb_any(skb); | |
bc7f75fa AK |
4722 | return NETDEV_TX_OK; |
4723 | } | |
4724 | ||
4725 | if (tso) | |
4726 | tx_flags |= E1000_TX_FLAGS_TSO; | |
4727 | else if (e1000_tx_csum(adapter, skb)) | |
4728 | tx_flags |= E1000_TX_FLAGS_CSUM; | |
4729 | ||
ad68076e BA |
4730 | /* |
4731 | * Old method was to assume IPv4 packet by default if TSO was enabled. | |
bc7f75fa | 4732 | * 82571 hardware supports TSO capabilities for IPv6 as well... |
ad68076e BA |
4733 | * no longer assume, we must. |
4734 | */ | |
bc7f75fa AK |
4735 | if (skb->protocol == htons(ETH_P_IP)) |
4736 | tx_flags |= E1000_TX_FLAGS_IPV4; | |
4737 | ||
1b7719c4 | 4738 | /* if count is 0 then mapping error has occured */ |
bc7f75fa | 4739 | count = e1000_tx_map(adapter, skb, first, max_per_txd, nr_frags, mss); |
1b7719c4 AD |
4740 | if (count) { |
4741 | e1000_tx_queue(adapter, tx_flags, count); | |
1b7719c4 AD |
4742 | /* Make sure there is space in the ring for the next send. */ |
4743 | e1000_maybe_stop_tx(netdev, MAX_SKB_FRAGS + 2); | |
4744 | ||
4745 | } else { | |
bc7f75fa | 4746 | dev_kfree_skb_any(skb); |
1b7719c4 AD |
4747 | tx_ring->buffer_info[first].time_stamp = 0; |
4748 | tx_ring->next_to_use = first; | |
bc7f75fa AK |
4749 | } |
4750 | ||
bc7f75fa AK |
4751 | return NETDEV_TX_OK; |
4752 | } | |
4753 | ||
4754 | /** | |
4755 | * e1000_tx_timeout - Respond to a Tx Hang | |
4756 | * @netdev: network interface device structure | |
4757 | **/ | |
4758 | static void e1000_tx_timeout(struct net_device *netdev) | |
4759 | { | |
4760 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4761 | ||
4762 | /* Do the reset outside of interrupt context */ | |
4763 | adapter->tx_timeout_count++; | |
4764 | schedule_work(&adapter->reset_task); | |
4765 | } | |
4766 | ||
4767 | static void e1000_reset_task(struct work_struct *work) | |
4768 | { | |
4769 | struct e1000_adapter *adapter; | |
4770 | adapter = container_of(work, struct e1000_adapter, reset_task); | |
4771 | ||
84f4ee90 TI |
4772 | e1000e_dump(adapter); |
4773 | e_err("Reset adapter\n"); | |
bc7f75fa AK |
4774 | e1000e_reinit_locked(adapter); |
4775 | } | |
4776 | ||
4777 | /** | |
4778 | * e1000_get_stats - Get System Network Statistics | |
4779 | * @netdev: network interface device structure | |
4780 | * | |
4781 | * Returns the address of the device statistics structure. | |
4782 | * The statistics are actually updated from the timer callback. | |
4783 | **/ | |
4784 | static struct net_device_stats *e1000_get_stats(struct net_device *netdev) | |
4785 | { | |
bc7f75fa | 4786 | /* only return the current stats */ |
7274c20f | 4787 | return &netdev->stats; |
bc7f75fa AK |
4788 | } |
4789 | ||
4790 | /** | |
4791 | * e1000_change_mtu - Change the Maximum Transfer Unit | |
4792 | * @netdev: network interface device structure | |
4793 | * @new_mtu: new value for maximum frame size | |
4794 | * | |
4795 | * Returns 0 on success, negative on failure | |
4796 | **/ | |
4797 | static int e1000_change_mtu(struct net_device *netdev, int new_mtu) | |
4798 | { | |
4799 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4800 | int max_frame = new_mtu + ETH_HLEN + ETH_FCS_LEN; | |
4801 | ||
2adc55c9 BA |
4802 | /* Jumbo frame support */ |
4803 | if ((max_frame > ETH_FRAME_LEN + ETH_FCS_LEN) && | |
4804 | !(adapter->flags & FLAG_HAS_JUMBO_FRAMES)) { | |
4805 | e_err("Jumbo Frames not supported.\n"); | |
bc7f75fa AK |
4806 | return -EINVAL; |
4807 | } | |
4808 | ||
2adc55c9 BA |
4809 | /* Supported frame sizes */ |
4810 | if ((new_mtu < ETH_ZLEN + ETH_FCS_LEN + VLAN_HLEN) || | |
4811 | (max_frame > adapter->max_hw_frame_size)) { | |
4812 | e_err("Unsupported MTU setting\n"); | |
bc7f75fa AK |
4813 | return -EINVAL; |
4814 | } | |
4815 | ||
6f461f6c BA |
4816 | /* 82573 Errata 17 */ |
4817 | if (((adapter->hw.mac.type == e1000_82573) || | |
4818 | (adapter->hw.mac.type == e1000_82574)) && | |
4819 | (max_frame > ETH_FRAME_LEN + ETH_FCS_LEN)) { | |
4820 | adapter->flags2 |= FLAG2_DISABLE_ASPM_L1; | |
4821 | e1000e_disable_aspm(adapter->pdev, PCIE_LINK_STATE_L1); | |
4822 | } | |
4823 | ||
bc7f75fa AK |
4824 | while (test_and_set_bit(__E1000_RESETTING, &adapter->state)) |
4825 | msleep(1); | |
610c9928 | 4826 | /* e1000e_down -> e1000e_reset dependent on max_frame_size & mtu */ |
318a94d6 | 4827 | adapter->max_frame_size = max_frame; |
610c9928 BA |
4828 | e_info("changing MTU from %d to %d\n", netdev->mtu, new_mtu); |
4829 | netdev->mtu = new_mtu; | |
bc7f75fa AK |
4830 | if (netif_running(netdev)) |
4831 | e1000e_down(adapter); | |
4832 | ||
ad68076e BA |
4833 | /* |
4834 | * NOTE: netdev_alloc_skb reserves 16 bytes, and typically NET_IP_ALIGN | |
bc7f75fa AK |
4835 | * means we reserve 2 more, this pushes us to allocate from the next |
4836 | * larger slab size. | |
ad68076e | 4837 | * i.e. RXBUFFER_2048 --> size-4096 slab |
97ac8cae BA |
4838 | * However with the new *_jumbo_rx* routines, jumbo receives will use |
4839 | * fragmented skbs | |
ad68076e | 4840 | */ |
bc7f75fa | 4841 | |
9926146b | 4842 | if (max_frame <= 2048) |
bc7f75fa AK |
4843 | adapter->rx_buffer_len = 2048; |
4844 | else | |
4845 | adapter->rx_buffer_len = 4096; | |
4846 | ||
4847 | /* adjust allocation if LPE protects us, and we aren't using SBP */ | |
4848 | if ((max_frame == ETH_FRAME_LEN + ETH_FCS_LEN) || | |
4849 | (max_frame == ETH_FRAME_LEN + VLAN_HLEN + ETH_FCS_LEN)) | |
4850 | adapter->rx_buffer_len = ETH_FRAME_LEN + VLAN_HLEN | |
ad68076e | 4851 | + ETH_FCS_LEN; |
bc7f75fa | 4852 | |
bc7f75fa AK |
4853 | if (netif_running(netdev)) |
4854 | e1000e_up(adapter); | |
4855 | else | |
4856 | e1000e_reset(adapter); | |
4857 | ||
4858 | clear_bit(__E1000_RESETTING, &adapter->state); | |
4859 | ||
4860 | return 0; | |
4861 | } | |
4862 | ||
4863 | static int e1000_mii_ioctl(struct net_device *netdev, struct ifreq *ifr, | |
4864 | int cmd) | |
4865 | { | |
4866 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
4867 | struct mii_ioctl_data *data = if_mii(ifr); | |
bc7f75fa | 4868 | |
318a94d6 | 4869 | if (adapter->hw.phy.media_type != e1000_media_type_copper) |
bc7f75fa AK |
4870 | return -EOPNOTSUPP; |
4871 | ||
4872 | switch (cmd) { | |
4873 | case SIOCGMIIPHY: | |
4874 | data->phy_id = adapter->hw.phy.addr; | |
4875 | break; | |
4876 | case SIOCGMIIREG: | |
b16a002e BA |
4877 | e1000_phy_read_status(adapter); |
4878 | ||
7c25769f BA |
4879 | switch (data->reg_num & 0x1F) { |
4880 | case MII_BMCR: | |
4881 | data->val_out = adapter->phy_regs.bmcr; | |
4882 | break; | |
4883 | case MII_BMSR: | |
4884 | data->val_out = adapter->phy_regs.bmsr; | |
4885 | break; | |
4886 | case MII_PHYSID1: | |
4887 | data->val_out = (adapter->hw.phy.id >> 16); | |
4888 | break; | |
4889 | case MII_PHYSID2: | |
4890 | data->val_out = (adapter->hw.phy.id & 0xFFFF); | |
4891 | break; | |
4892 | case MII_ADVERTISE: | |
4893 | data->val_out = adapter->phy_regs.advertise; | |
4894 | break; | |
4895 | case MII_LPA: | |
4896 | data->val_out = adapter->phy_regs.lpa; | |
4897 | break; | |
4898 | case MII_EXPANSION: | |
4899 | data->val_out = adapter->phy_regs.expansion; | |
4900 | break; | |
4901 | case MII_CTRL1000: | |
4902 | data->val_out = adapter->phy_regs.ctrl1000; | |
4903 | break; | |
4904 | case MII_STAT1000: | |
4905 | data->val_out = adapter->phy_regs.stat1000; | |
4906 | break; | |
4907 | case MII_ESTATUS: | |
4908 | data->val_out = adapter->phy_regs.estatus; | |
4909 | break; | |
4910 | default: | |
bc7f75fa AK |
4911 | return -EIO; |
4912 | } | |
bc7f75fa AK |
4913 | break; |
4914 | case SIOCSMIIREG: | |
4915 | default: | |
4916 | return -EOPNOTSUPP; | |
4917 | } | |
4918 | return 0; | |
4919 | } | |
4920 | ||
4921 | static int e1000_ioctl(struct net_device *netdev, struct ifreq *ifr, int cmd) | |
4922 | { | |
4923 | switch (cmd) { | |
4924 | case SIOCGMIIPHY: | |
4925 | case SIOCGMIIREG: | |
4926 | case SIOCSMIIREG: | |
4927 | return e1000_mii_ioctl(netdev, ifr, cmd); | |
4928 | default: | |
4929 | return -EOPNOTSUPP; | |
4930 | } | |
4931 | } | |
4932 | ||
a4f58f54 BA |
4933 | static int e1000_init_phy_wakeup(struct e1000_adapter *adapter, u32 wufc) |
4934 | { | |
4935 | struct e1000_hw *hw = &adapter->hw; | |
4936 | u32 i, mac_reg; | |
4937 | u16 phy_reg; | |
4938 | int retval = 0; | |
4939 | ||
4940 | /* copy MAC RARs to PHY RARs */ | |
d3738bb8 | 4941 | e1000_copy_rx_addrs_to_phy_ich8lan(hw); |
a4f58f54 BA |
4942 | |
4943 | /* copy MAC MTA to PHY MTA */ | |
4944 | for (i = 0; i < adapter->hw.mac.mta_reg_count; i++) { | |
4945 | mac_reg = E1000_READ_REG_ARRAY(hw, E1000_MTA, i); | |
4946 | e1e_wphy(hw, BM_MTA(i), (u16)(mac_reg & 0xFFFF)); | |
4947 | e1e_wphy(hw, BM_MTA(i) + 1, (u16)((mac_reg >> 16) & 0xFFFF)); | |
4948 | } | |
4949 | ||
4950 | /* configure PHY Rx Control register */ | |
4951 | e1e_rphy(&adapter->hw, BM_RCTL, &phy_reg); | |
4952 | mac_reg = er32(RCTL); | |
4953 | if (mac_reg & E1000_RCTL_UPE) | |
4954 | phy_reg |= BM_RCTL_UPE; | |
4955 | if (mac_reg & E1000_RCTL_MPE) | |
4956 | phy_reg |= BM_RCTL_MPE; | |
4957 | phy_reg &= ~(BM_RCTL_MO_MASK); | |
4958 | if (mac_reg & E1000_RCTL_MO_3) | |
4959 | phy_reg |= (((mac_reg & E1000_RCTL_MO_3) >> E1000_RCTL_MO_SHIFT) | |
4960 | << BM_RCTL_MO_SHIFT); | |
4961 | if (mac_reg & E1000_RCTL_BAM) | |
4962 | phy_reg |= BM_RCTL_BAM; | |
4963 | if (mac_reg & E1000_RCTL_PMCF) | |
4964 | phy_reg |= BM_RCTL_PMCF; | |
4965 | mac_reg = er32(CTRL); | |
4966 | if (mac_reg & E1000_CTRL_RFCE) | |
4967 | phy_reg |= BM_RCTL_RFCE; | |
4968 | e1e_wphy(&adapter->hw, BM_RCTL, phy_reg); | |
4969 | ||
4970 | /* enable PHY wakeup in MAC register */ | |
4971 | ew32(WUFC, wufc); | |
4972 | ew32(WUC, E1000_WUC_PHY_WAKE | E1000_WUC_PME_EN); | |
4973 | ||
4974 | /* configure and enable PHY wakeup in PHY registers */ | |
4975 | e1e_wphy(&adapter->hw, BM_WUFC, wufc); | |
4976 | e1e_wphy(&adapter->hw, BM_WUC, E1000_WUC_PME_EN); | |
4977 | ||
4978 | /* activate PHY wakeup */ | |
94d8186a | 4979 | retval = hw->phy.ops.acquire(hw); |
a4f58f54 BA |
4980 | if (retval) { |
4981 | e_err("Could not acquire PHY\n"); | |
4982 | return retval; | |
4983 | } | |
4984 | e1000e_write_phy_reg_mdic(hw, IGP01E1000_PHY_PAGE_SELECT, | |
4985 | (BM_WUC_ENABLE_PAGE << IGP_PAGE_SHIFT)); | |
4986 | retval = e1000e_read_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, &phy_reg); | |
4987 | if (retval) { | |
4988 | e_err("Could not read PHY page 769\n"); | |
4989 | goto out; | |
4990 | } | |
4991 | phy_reg |= BM_WUC_ENABLE_BIT | BM_WUC_HOST_WU_BIT; | |
4992 | retval = e1000e_write_phy_reg_mdic(hw, BM_WUC_ENABLE_REG, phy_reg); | |
4993 | if (retval) | |
4994 | e_err("Could not set PHY Host Wakeup bit\n"); | |
4995 | out: | |
94d8186a | 4996 | hw->phy.ops.release(hw); |
a4f58f54 BA |
4997 | |
4998 | return retval; | |
4999 | } | |
5000 | ||
23606cf5 RW |
5001 | static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake, |
5002 | bool runtime) | |
bc7f75fa AK |
5003 | { |
5004 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5005 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5006 | struct e1000_hw *hw = &adapter->hw; | |
5007 | u32 ctrl, ctrl_ext, rctl, status; | |
23606cf5 RW |
5008 | /* Runtime suspend should only enable wakeup for link changes */ |
5009 | u32 wufc = runtime ? E1000_WUFC_LNKC : adapter->wol; | |
bc7f75fa AK |
5010 | int retval = 0; |
5011 | ||
5012 | netif_device_detach(netdev); | |
5013 | ||
5014 | if (netif_running(netdev)) { | |
5015 | WARN_ON(test_bit(__E1000_RESETTING, &adapter->state)); | |
5016 | e1000e_down(adapter); | |
5017 | e1000_free_irq(adapter); | |
5018 | } | |
4662e82b | 5019 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa AK |
5020 | |
5021 | retval = pci_save_state(pdev); | |
5022 | if (retval) | |
5023 | return retval; | |
5024 | ||
5025 | status = er32(STATUS); | |
5026 | if (status & E1000_STATUS_LU) | |
5027 | wufc &= ~E1000_WUFC_LNKC; | |
5028 | ||
5029 | if (wufc) { | |
5030 | e1000_setup_rctl(adapter); | |
5031 | e1000_set_multi(netdev); | |
5032 | ||
5033 | /* turn on all-multi mode if wake on multicast is enabled */ | |
5034 | if (wufc & E1000_WUFC_MC) { | |
5035 | rctl = er32(RCTL); | |
5036 | rctl |= E1000_RCTL_MPE; | |
5037 | ew32(RCTL, rctl); | |
5038 | } | |
5039 | ||
5040 | ctrl = er32(CTRL); | |
5041 | /* advertise wake from D3Cold */ | |
5042 | #define E1000_CTRL_ADVD3WUC 0x00100000 | |
5043 | /* phy power management enable */ | |
5044 | #define E1000_CTRL_EN_PHY_PWR_MGMT 0x00200000 | |
a4f58f54 BA |
5045 | ctrl |= E1000_CTRL_ADVD3WUC; |
5046 | if (!(adapter->flags2 & FLAG2_HAS_PHY_WAKEUP)) | |
5047 | ctrl |= E1000_CTRL_EN_PHY_PWR_MGMT; | |
bc7f75fa AK |
5048 | ew32(CTRL, ctrl); |
5049 | ||
318a94d6 JK |
5050 | if (adapter->hw.phy.media_type == e1000_media_type_fiber || |
5051 | adapter->hw.phy.media_type == | |
5052 | e1000_media_type_internal_serdes) { | |
bc7f75fa AK |
5053 | /* keep the laser running in D3 */ |
5054 | ctrl_ext = er32(CTRL_EXT); | |
93a23f48 | 5055 | ctrl_ext |= E1000_CTRL_EXT_SDP3_DATA; |
bc7f75fa AK |
5056 | ew32(CTRL_EXT, ctrl_ext); |
5057 | } | |
5058 | ||
97ac8cae BA |
5059 | if (adapter->flags & FLAG_IS_ICH) |
5060 | e1000e_disable_gig_wol_ich8lan(&adapter->hw); | |
5061 | ||
bc7f75fa AK |
5062 | /* Allow time for pending master requests to run */ |
5063 | e1000e_disable_pcie_master(&adapter->hw); | |
5064 | ||
82776a4b | 5065 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { |
a4f58f54 BA |
5066 | /* enable wakeup by the PHY */ |
5067 | retval = e1000_init_phy_wakeup(adapter, wufc); | |
5068 | if (retval) | |
5069 | return retval; | |
5070 | } else { | |
5071 | /* enable wakeup by the MAC */ | |
5072 | ew32(WUFC, wufc); | |
5073 | ew32(WUC, E1000_WUC_PME_EN); | |
5074 | } | |
bc7f75fa AK |
5075 | } else { |
5076 | ew32(WUC, 0); | |
5077 | ew32(WUFC, 0); | |
bc7f75fa AK |
5078 | } |
5079 | ||
4f9de721 RW |
5080 | *enable_wake = !!wufc; |
5081 | ||
bc7f75fa | 5082 | /* make sure adapter isn't asleep if manageability is enabled */ |
82776a4b BA |
5083 | if ((adapter->flags & FLAG_MNG_PT_ENABLED) || |
5084 | (hw->mac.ops.check_mng_mode(hw))) | |
4f9de721 | 5085 | *enable_wake = true; |
bc7f75fa AK |
5086 | |
5087 | if (adapter->hw.phy.type == e1000_phy_igp_3) | |
5088 | e1000e_igp3_phy_powerdown_workaround_ich8lan(&adapter->hw); | |
5089 | ||
ad68076e BA |
5090 | /* |
5091 | * Release control of h/w to f/w. If f/w is AMT enabled, this | |
5092 | * would have already happened in close and is redundant. | |
5093 | */ | |
bc7f75fa AK |
5094 | e1000_release_hw_control(adapter); |
5095 | ||
5096 | pci_disable_device(pdev); | |
5097 | ||
4f9de721 RW |
5098 | return 0; |
5099 | } | |
5100 | ||
5101 | static void e1000_power_off(struct pci_dev *pdev, bool sleep, bool wake) | |
5102 | { | |
5103 | if (sleep && wake) { | |
5104 | pci_prepare_to_sleep(pdev); | |
5105 | return; | |
5106 | } | |
5107 | ||
5108 | pci_wake_from_d3(pdev, wake); | |
5109 | pci_set_power_state(pdev, PCI_D3hot); | |
5110 | } | |
5111 | ||
5112 | static void e1000_complete_shutdown(struct pci_dev *pdev, bool sleep, | |
5113 | bool wake) | |
5114 | { | |
5115 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5116 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5117 | ||
005cbdfc AD |
5118 | /* |
5119 | * The pci-e switch on some quad port adapters will report a | |
5120 | * correctable error when the MAC transitions from D0 to D3. To | |
5121 | * prevent this we need to mask off the correctable errors on the | |
5122 | * downstream port of the pci-e switch. | |
5123 | */ | |
5124 | if (adapter->flags & FLAG_IS_QUAD_PORT) { | |
5125 | struct pci_dev *us_dev = pdev->bus->self; | |
5126 | int pos = pci_find_capability(us_dev, PCI_CAP_ID_EXP); | |
5127 | u16 devctl; | |
5128 | ||
5129 | pci_read_config_word(us_dev, pos + PCI_EXP_DEVCTL, &devctl); | |
5130 | pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, | |
5131 | (devctl & ~PCI_EXP_DEVCTL_CERE)); | |
5132 | ||
4f9de721 | 5133 | e1000_power_off(pdev, sleep, wake); |
005cbdfc AD |
5134 | |
5135 | pci_write_config_word(us_dev, pos + PCI_EXP_DEVCTL, devctl); | |
5136 | } else { | |
4f9de721 | 5137 | e1000_power_off(pdev, sleep, wake); |
005cbdfc | 5138 | } |
bc7f75fa AK |
5139 | } |
5140 | ||
6f461f6c BA |
5141 | #ifdef CONFIG_PCIEASPM |
5142 | static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) | |
5143 | { | |
5144 | pci_disable_link_state(pdev, state); | |
5145 | } | |
5146 | #else | |
5147 | static void __e1000e_disable_aspm(struct pci_dev *pdev, u16 state) | |
1eae4eb2 AK |
5148 | { |
5149 | int pos; | |
6f461f6c | 5150 | u16 reg16; |
1eae4eb2 AK |
5151 | |
5152 | /* | |
6f461f6c BA |
5153 | * Both device and parent should have the same ASPM setting. |
5154 | * Disable ASPM in downstream component first and then upstream. | |
1eae4eb2 | 5155 | */ |
6f461f6c BA |
5156 | pos = pci_pcie_cap(pdev); |
5157 | pci_read_config_word(pdev, pos + PCI_EXP_LNKCTL, ®16); | |
5158 | reg16 &= ~state; | |
5159 | pci_write_config_word(pdev, pos + PCI_EXP_LNKCTL, reg16); | |
5160 | ||
0c75ba22 AB |
5161 | if (!pdev->bus->self) |
5162 | return; | |
5163 | ||
6f461f6c BA |
5164 | pos = pci_pcie_cap(pdev->bus->self); |
5165 | pci_read_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, ®16); | |
5166 | reg16 &= ~state; | |
5167 | pci_write_config_word(pdev->bus->self, pos + PCI_EXP_LNKCTL, reg16); | |
5168 | } | |
5169 | #endif | |
5170 | void e1000e_disable_aspm(struct pci_dev *pdev, u16 state) | |
5171 | { | |
5172 | dev_info(&pdev->dev, "Disabling ASPM %s %s\n", | |
5173 | (state & PCIE_LINK_STATE_L0S) ? "L0s" : "", | |
5174 | (state & PCIE_LINK_STATE_L1) ? "L1" : ""); | |
5175 | ||
5176 | __e1000e_disable_aspm(pdev, state); | |
1eae4eb2 AK |
5177 | } |
5178 | ||
a0340162 | 5179 | #ifdef CONFIG_PM_OPS |
23606cf5 | 5180 | static bool e1000e_pm_ready(struct e1000_adapter *adapter) |
4f9de721 | 5181 | { |
23606cf5 | 5182 | return !!adapter->tx_ring->buffer_info; |
4f9de721 RW |
5183 | } |
5184 | ||
23606cf5 | 5185 | static int __e1000_resume(struct pci_dev *pdev) |
bc7f75fa AK |
5186 | { |
5187 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5188 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5189 | struct e1000_hw *hw = &adapter->hw; | |
5190 | u32 err; | |
5191 | ||
5192 | pci_set_power_state(pdev, PCI_D0); | |
5193 | pci_restore_state(pdev); | |
28b8f04a | 5194 | pci_save_state(pdev); |
6f461f6c BA |
5195 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
5196 | e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1); | |
6e4f6f6b | 5197 | |
4662e82b | 5198 | e1000e_set_interrupt_capability(adapter); |
bc7f75fa AK |
5199 | if (netif_running(netdev)) { |
5200 | err = e1000_request_irq(adapter); | |
5201 | if (err) | |
5202 | return err; | |
5203 | } | |
5204 | ||
5205 | e1000e_power_up_phy(adapter); | |
a4f58f54 BA |
5206 | |
5207 | /* report the system wakeup cause from S3/S4 */ | |
5208 | if (adapter->flags2 & FLAG2_HAS_PHY_WAKEUP) { | |
5209 | u16 phy_data; | |
5210 | ||
5211 | e1e_rphy(&adapter->hw, BM_WUS, &phy_data); | |
5212 | if (phy_data) { | |
5213 | e_info("PHY Wakeup cause - %s\n", | |
5214 | phy_data & E1000_WUS_EX ? "Unicast Packet" : | |
5215 | phy_data & E1000_WUS_MC ? "Multicast Packet" : | |
5216 | phy_data & E1000_WUS_BC ? "Broadcast Packet" : | |
5217 | phy_data & E1000_WUS_MAG ? "Magic Packet" : | |
5218 | phy_data & E1000_WUS_LNKC ? "Link Status " | |
5219 | " Change" : "other"); | |
5220 | } | |
5221 | e1e_wphy(&adapter->hw, BM_WUS, ~0); | |
5222 | } else { | |
5223 | u32 wus = er32(WUS); | |
5224 | if (wus) { | |
5225 | e_info("MAC Wakeup cause - %s\n", | |
5226 | wus & E1000_WUS_EX ? "Unicast Packet" : | |
5227 | wus & E1000_WUS_MC ? "Multicast Packet" : | |
5228 | wus & E1000_WUS_BC ? "Broadcast Packet" : | |
5229 | wus & E1000_WUS_MAG ? "Magic Packet" : | |
5230 | wus & E1000_WUS_LNKC ? "Link Status Change" : | |
5231 | "other"); | |
5232 | } | |
5233 | ew32(WUS, ~0); | |
5234 | } | |
5235 | ||
bc7f75fa | 5236 | e1000e_reset(adapter); |
bc7f75fa | 5237 | |
cd791618 | 5238 | e1000_init_manageability_pt(adapter); |
bc7f75fa AK |
5239 | |
5240 | if (netif_running(netdev)) | |
5241 | e1000e_up(adapter); | |
5242 | ||
5243 | netif_device_attach(netdev); | |
5244 | ||
ad68076e BA |
5245 | /* |
5246 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 5247 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
5248 | * under the control of the driver. |
5249 | */ | |
c43bc57e | 5250 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
5251 | e1000_get_hw_control(adapter); |
5252 | ||
5253 | return 0; | |
5254 | } | |
23606cf5 | 5255 | |
a0340162 RW |
5256 | #ifdef CONFIG_PM_SLEEP |
5257 | static int e1000_suspend(struct device *dev) | |
5258 | { | |
5259 | struct pci_dev *pdev = to_pci_dev(dev); | |
5260 | int retval; | |
5261 | bool wake; | |
5262 | ||
5263 | retval = __e1000_shutdown(pdev, &wake, false); | |
5264 | if (!retval) | |
5265 | e1000_complete_shutdown(pdev, true, wake); | |
5266 | ||
5267 | return retval; | |
5268 | } | |
5269 | ||
23606cf5 RW |
5270 | static int e1000_resume(struct device *dev) |
5271 | { | |
5272 | struct pci_dev *pdev = to_pci_dev(dev); | |
5273 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5274 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5275 | ||
5276 | if (e1000e_pm_ready(adapter)) | |
5277 | adapter->idle_check = true; | |
5278 | ||
5279 | return __e1000_resume(pdev); | |
5280 | } | |
a0340162 RW |
5281 | #endif /* CONFIG_PM_SLEEP */ |
5282 | ||
5283 | #ifdef CONFIG_PM_RUNTIME | |
5284 | static int e1000_runtime_suspend(struct device *dev) | |
5285 | { | |
5286 | struct pci_dev *pdev = to_pci_dev(dev); | |
5287 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5288 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5289 | ||
5290 | if (e1000e_pm_ready(adapter)) { | |
5291 | bool wake; | |
5292 | ||
5293 | __e1000_shutdown(pdev, &wake, true); | |
5294 | } | |
5295 | ||
5296 | return 0; | |
5297 | } | |
5298 | ||
5299 | static int e1000_idle(struct device *dev) | |
5300 | { | |
5301 | struct pci_dev *pdev = to_pci_dev(dev); | |
5302 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5303 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5304 | ||
5305 | if (!e1000e_pm_ready(adapter)) | |
5306 | return 0; | |
5307 | ||
5308 | if (adapter->idle_check) { | |
5309 | adapter->idle_check = false; | |
5310 | if (!e1000e_has_link(adapter)) | |
5311 | pm_schedule_suspend(dev, MSEC_PER_SEC); | |
5312 | } | |
5313 | ||
5314 | return -EBUSY; | |
5315 | } | |
23606cf5 RW |
5316 | |
5317 | static int e1000_runtime_resume(struct device *dev) | |
5318 | { | |
5319 | struct pci_dev *pdev = to_pci_dev(dev); | |
5320 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5321 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5322 | ||
5323 | if (!e1000e_pm_ready(adapter)) | |
5324 | return 0; | |
5325 | ||
5326 | adapter->idle_check = !dev->power.runtime_auto; | |
5327 | return __e1000_resume(pdev); | |
5328 | } | |
a0340162 RW |
5329 | #endif /* CONFIG_PM_RUNTIME */ |
5330 | #endif /* CONFIG_PM_OPS */ | |
bc7f75fa AK |
5331 | |
5332 | static void e1000_shutdown(struct pci_dev *pdev) | |
5333 | { | |
4f9de721 RW |
5334 | bool wake = false; |
5335 | ||
23606cf5 | 5336 | __e1000_shutdown(pdev, &wake, false); |
4f9de721 RW |
5337 | |
5338 | if (system_state == SYSTEM_POWER_OFF) | |
5339 | e1000_complete_shutdown(pdev, false, wake); | |
bc7f75fa AK |
5340 | } |
5341 | ||
5342 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
5343 | /* | |
5344 | * Polling 'interrupt' - used by things like netconsole to send skbs | |
5345 | * without having to re-enable interrupts. It's not called while | |
5346 | * the interrupt routine is executing. | |
5347 | */ | |
5348 | static void e1000_netpoll(struct net_device *netdev) | |
5349 | { | |
5350 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5351 | ||
5352 | disable_irq(adapter->pdev->irq); | |
5353 | e1000_intr(adapter->pdev->irq, netdev); | |
5354 | ||
bc7f75fa AK |
5355 | enable_irq(adapter->pdev->irq); |
5356 | } | |
5357 | #endif | |
5358 | ||
5359 | /** | |
5360 | * e1000_io_error_detected - called when PCI error is detected | |
5361 | * @pdev: Pointer to PCI device | |
5362 | * @state: The current pci connection state | |
5363 | * | |
5364 | * This function is called after a PCI bus error affecting | |
5365 | * this device has been detected. | |
5366 | */ | |
5367 | static pci_ers_result_t e1000_io_error_detected(struct pci_dev *pdev, | |
5368 | pci_channel_state_t state) | |
5369 | { | |
5370 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5371 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5372 | ||
5373 | netif_device_detach(netdev); | |
5374 | ||
c93b5a76 MM |
5375 | if (state == pci_channel_io_perm_failure) |
5376 | return PCI_ERS_RESULT_DISCONNECT; | |
5377 | ||
bc7f75fa AK |
5378 | if (netif_running(netdev)) |
5379 | e1000e_down(adapter); | |
5380 | pci_disable_device(pdev); | |
5381 | ||
5382 | /* Request a slot slot reset. */ | |
5383 | return PCI_ERS_RESULT_NEED_RESET; | |
5384 | } | |
5385 | ||
5386 | /** | |
5387 | * e1000_io_slot_reset - called after the pci bus has been reset. | |
5388 | * @pdev: Pointer to PCI device | |
5389 | * | |
5390 | * Restart the card from scratch, as if from a cold-boot. Implementation | |
5391 | * resembles the first-half of the e1000_resume routine. | |
5392 | */ | |
5393 | static pci_ers_result_t e1000_io_slot_reset(struct pci_dev *pdev) | |
5394 | { | |
5395 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5396 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5397 | struct e1000_hw *hw = &adapter->hw; | |
6e4f6f6b | 5398 | int err; |
111b9dc5 | 5399 | pci_ers_result_t result; |
bc7f75fa | 5400 | |
6f461f6c BA |
5401 | if (adapter->flags2 & FLAG2_DISABLE_ASPM_L1) |
5402 | e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1); | |
f0f422e5 | 5403 | err = pci_enable_device_mem(pdev); |
6e4f6f6b | 5404 | if (err) { |
bc7f75fa AK |
5405 | dev_err(&pdev->dev, |
5406 | "Cannot re-enable PCI device after reset.\n"); | |
111b9dc5 JB |
5407 | result = PCI_ERS_RESULT_DISCONNECT; |
5408 | } else { | |
5409 | pci_set_master(pdev); | |
23606cf5 | 5410 | pdev->state_saved = true; |
111b9dc5 | 5411 | pci_restore_state(pdev); |
bc7f75fa | 5412 | |
111b9dc5 JB |
5413 | pci_enable_wake(pdev, PCI_D3hot, 0); |
5414 | pci_enable_wake(pdev, PCI_D3cold, 0); | |
bc7f75fa | 5415 | |
111b9dc5 JB |
5416 | e1000e_reset(adapter); |
5417 | ew32(WUS, ~0); | |
5418 | result = PCI_ERS_RESULT_RECOVERED; | |
5419 | } | |
bc7f75fa | 5420 | |
111b9dc5 JB |
5421 | pci_cleanup_aer_uncorrect_error_status(pdev); |
5422 | ||
5423 | return result; | |
bc7f75fa AK |
5424 | } |
5425 | ||
5426 | /** | |
5427 | * e1000_io_resume - called when traffic can start flowing again. | |
5428 | * @pdev: Pointer to PCI device | |
5429 | * | |
5430 | * This callback is called when the error recovery driver tells us that | |
5431 | * its OK to resume normal operation. Implementation resembles the | |
5432 | * second-half of the e1000_resume routine. | |
5433 | */ | |
5434 | static void e1000_io_resume(struct pci_dev *pdev) | |
5435 | { | |
5436 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5437 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
5438 | ||
cd791618 | 5439 | e1000_init_manageability_pt(adapter); |
bc7f75fa AK |
5440 | |
5441 | if (netif_running(netdev)) { | |
5442 | if (e1000e_up(adapter)) { | |
5443 | dev_err(&pdev->dev, | |
5444 | "can't bring device back up after reset\n"); | |
5445 | return; | |
5446 | } | |
5447 | } | |
5448 | ||
5449 | netif_device_attach(netdev); | |
5450 | ||
ad68076e BA |
5451 | /* |
5452 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 5453 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
5454 | * under the control of the driver. |
5455 | */ | |
c43bc57e | 5456 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
5457 | e1000_get_hw_control(adapter); |
5458 | ||
5459 | } | |
5460 | ||
5461 | static void e1000_print_device_info(struct e1000_adapter *adapter) | |
5462 | { | |
5463 | struct e1000_hw *hw = &adapter->hw; | |
5464 | struct net_device *netdev = adapter->netdev; | |
69e3fd8c | 5465 | u32 pba_num; |
bc7f75fa AK |
5466 | |
5467 | /* print bus type/speed/width info */ | |
7c510e4b | 5468 | e_info("(PCI Express:2.5GB/s:%s) %pM\n", |
44defeb3 JK |
5469 | /* bus width */ |
5470 | ((hw->bus.width == e1000_bus_width_pcie_x4) ? "Width x4" : | |
5471 | "Width x1"), | |
5472 | /* MAC address */ | |
7c510e4b | 5473 | netdev->dev_addr); |
44defeb3 JK |
5474 | e_info("Intel(R) PRO/%s Network Connection\n", |
5475 | (hw->phy.type == e1000_phy_ife) ? "10/100" : "1000"); | |
69e3fd8c | 5476 | e1000e_read_pba_num(hw, &pba_num); |
44defeb3 JK |
5477 | e_info("MAC: %d, PHY: %d, PBA No: %06x-%03x\n", |
5478 | hw->mac.type, hw->phy.type, (pba_num >> 8), (pba_num & 0xff)); | |
bc7f75fa AK |
5479 | } |
5480 | ||
10aa4c04 AK |
5481 | static void e1000_eeprom_checks(struct e1000_adapter *adapter) |
5482 | { | |
5483 | struct e1000_hw *hw = &adapter->hw; | |
5484 | int ret_val; | |
5485 | u16 buf = 0; | |
5486 | ||
5487 | if (hw->mac.type != e1000_82573) | |
5488 | return; | |
5489 | ||
5490 | ret_val = e1000_read_nvm(hw, NVM_INIT_CONTROL2_REG, 1, &buf); | |
e243455d | 5491 | if (!ret_val && (!(le16_to_cpu(buf) & (1 << 0)))) { |
10aa4c04 | 5492 | /* Deep Smart Power Down (DSPD) */ |
6c2a9efa FP |
5493 | dev_warn(&adapter->pdev->dev, |
5494 | "Warning: detected DSPD enabled in EEPROM\n"); | |
10aa4c04 | 5495 | } |
10aa4c04 AK |
5496 | } |
5497 | ||
651c2466 SH |
5498 | static const struct net_device_ops e1000e_netdev_ops = { |
5499 | .ndo_open = e1000_open, | |
5500 | .ndo_stop = e1000_close, | |
00829823 | 5501 | .ndo_start_xmit = e1000_xmit_frame, |
651c2466 SH |
5502 | .ndo_get_stats = e1000_get_stats, |
5503 | .ndo_set_multicast_list = e1000_set_multi, | |
5504 | .ndo_set_mac_address = e1000_set_mac, | |
5505 | .ndo_change_mtu = e1000_change_mtu, | |
5506 | .ndo_do_ioctl = e1000_ioctl, | |
5507 | .ndo_tx_timeout = e1000_tx_timeout, | |
5508 | .ndo_validate_addr = eth_validate_addr, | |
5509 | ||
5510 | .ndo_vlan_rx_register = e1000_vlan_rx_register, | |
5511 | .ndo_vlan_rx_add_vid = e1000_vlan_rx_add_vid, | |
5512 | .ndo_vlan_rx_kill_vid = e1000_vlan_rx_kill_vid, | |
5513 | #ifdef CONFIG_NET_POLL_CONTROLLER | |
5514 | .ndo_poll_controller = e1000_netpoll, | |
5515 | #endif | |
5516 | }; | |
5517 | ||
bc7f75fa AK |
5518 | /** |
5519 | * e1000_probe - Device Initialization Routine | |
5520 | * @pdev: PCI device information struct | |
5521 | * @ent: entry in e1000_pci_tbl | |
5522 | * | |
5523 | * Returns 0 on success, negative on failure | |
5524 | * | |
5525 | * e1000_probe initializes an adapter identified by a pci_dev structure. | |
5526 | * The OS initialization, configuring of the adapter private structure, | |
5527 | * and a hardware reset occur. | |
5528 | **/ | |
5529 | static int __devinit e1000_probe(struct pci_dev *pdev, | |
5530 | const struct pci_device_id *ent) | |
5531 | { | |
5532 | struct net_device *netdev; | |
5533 | struct e1000_adapter *adapter; | |
5534 | struct e1000_hw *hw; | |
5535 | const struct e1000_info *ei = e1000_info_tbl[ent->driver_data]; | |
f47e81fc BB |
5536 | resource_size_t mmio_start, mmio_len; |
5537 | resource_size_t flash_start, flash_len; | |
bc7f75fa AK |
5538 | |
5539 | static int cards_found; | |
5540 | int i, err, pci_using_dac; | |
5541 | u16 eeprom_data = 0; | |
5542 | u16 eeprom_apme_mask = E1000_EEPROM_APME; | |
5543 | ||
6f461f6c BA |
5544 | if (ei->flags2 & FLAG2_DISABLE_ASPM_L1) |
5545 | e1000e_disable_aspm(pdev, PCIE_LINK_STATE_L1); | |
6e4f6f6b | 5546 | |
f0f422e5 | 5547 | err = pci_enable_device_mem(pdev); |
bc7f75fa AK |
5548 | if (err) |
5549 | return err; | |
5550 | ||
5551 | pci_using_dac = 0; | |
0be3f55f | 5552 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(64)); |
bc7f75fa | 5553 | if (!err) { |
0be3f55f | 5554 | err = dma_set_coherent_mask(&pdev->dev, DMA_BIT_MASK(64)); |
bc7f75fa AK |
5555 | if (!err) |
5556 | pci_using_dac = 1; | |
5557 | } else { | |
0be3f55f | 5558 | err = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32)); |
bc7f75fa | 5559 | if (err) { |
0be3f55f NN |
5560 | err = dma_set_coherent_mask(&pdev->dev, |
5561 | DMA_BIT_MASK(32)); | |
bc7f75fa AK |
5562 | if (err) { |
5563 | dev_err(&pdev->dev, "No usable DMA " | |
5564 | "configuration, aborting\n"); | |
5565 | goto err_dma; | |
5566 | } | |
5567 | } | |
5568 | } | |
5569 | ||
e8de1481 | 5570 | err = pci_request_selected_regions_exclusive(pdev, |
f0f422e5 BA |
5571 | pci_select_bars(pdev, IORESOURCE_MEM), |
5572 | e1000e_driver_name); | |
bc7f75fa AK |
5573 | if (err) |
5574 | goto err_pci_reg; | |
5575 | ||
68eac460 | 5576 | /* AER (Advanced Error Reporting) hooks */ |
19d5afd4 | 5577 | pci_enable_pcie_error_reporting(pdev); |
68eac460 | 5578 | |
bc7f75fa | 5579 | pci_set_master(pdev); |
438b365a BA |
5580 | /* PCI config space info */ |
5581 | err = pci_save_state(pdev); | |
5582 | if (err) | |
5583 | goto err_alloc_etherdev; | |
bc7f75fa AK |
5584 | |
5585 | err = -ENOMEM; | |
5586 | netdev = alloc_etherdev(sizeof(struct e1000_adapter)); | |
5587 | if (!netdev) | |
5588 | goto err_alloc_etherdev; | |
5589 | ||
bc7f75fa AK |
5590 | SET_NETDEV_DEV(netdev, &pdev->dev); |
5591 | ||
f85e4dfa TH |
5592 | netdev->irq = pdev->irq; |
5593 | ||
bc7f75fa AK |
5594 | pci_set_drvdata(pdev, netdev); |
5595 | adapter = netdev_priv(netdev); | |
5596 | hw = &adapter->hw; | |
5597 | adapter->netdev = netdev; | |
5598 | adapter->pdev = pdev; | |
5599 | adapter->ei = ei; | |
5600 | adapter->pba = ei->pba; | |
5601 | adapter->flags = ei->flags; | |
eb7c3adb | 5602 | adapter->flags2 = ei->flags2; |
bc7f75fa AK |
5603 | adapter->hw.adapter = adapter; |
5604 | adapter->hw.mac.type = ei->mac; | |
2adc55c9 | 5605 | adapter->max_hw_frame_size = ei->max_hw_frame_size; |
bc7f75fa AK |
5606 | adapter->msg_enable = (1 << NETIF_MSG_DRV | NETIF_MSG_PROBE) - 1; |
5607 | ||
5608 | mmio_start = pci_resource_start(pdev, 0); | |
5609 | mmio_len = pci_resource_len(pdev, 0); | |
5610 | ||
5611 | err = -EIO; | |
5612 | adapter->hw.hw_addr = ioremap(mmio_start, mmio_len); | |
5613 | if (!adapter->hw.hw_addr) | |
5614 | goto err_ioremap; | |
5615 | ||
5616 | if ((adapter->flags & FLAG_HAS_FLASH) && | |
5617 | (pci_resource_flags(pdev, 1) & IORESOURCE_MEM)) { | |
5618 | flash_start = pci_resource_start(pdev, 1); | |
5619 | flash_len = pci_resource_len(pdev, 1); | |
5620 | adapter->hw.flash_address = ioremap(flash_start, flash_len); | |
5621 | if (!adapter->hw.flash_address) | |
5622 | goto err_flashmap; | |
5623 | } | |
5624 | ||
5625 | /* construct the net_device struct */ | |
651c2466 | 5626 | netdev->netdev_ops = &e1000e_netdev_ops; |
bc7f75fa | 5627 | e1000e_set_ethtool_ops(netdev); |
bc7f75fa AK |
5628 | netdev->watchdog_timeo = 5 * HZ; |
5629 | netif_napi_add(netdev, &adapter->napi, e1000_clean, 64); | |
bc7f75fa AK |
5630 | strncpy(netdev->name, pci_name(pdev), sizeof(netdev->name) - 1); |
5631 | ||
5632 | netdev->mem_start = mmio_start; | |
5633 | netdev->mem_end = mmio_start + mmio_len; | |
5634 | ||
5635 | adapter->bd_number = cards_found++; | |
5636 | ||
4662e82b BA |
5637 | e1000e_check_options(adapter); |
5638 | ||
bc7f75fa AK |
5639 | /* setup adapter struct */ |
5640 | err = e1000_sw_init(adapter); | |
5641 | if (err) | |
5642 | goto err_sw_init; | |
5643 | ||
bc7f75fa AK |
5644 | memcpy(&hw->mac.ops, ei->mac_ops, sizeof(hw->mac.ops)); |
5645 | memcpy(&hw->nvm.ops, ei->nvm_ops, sizeof(hw->nvm.ops)); | |
5646 | memcpy(&hw->phy.ops, ei->phy_ops, sizeof(hw->phy.ops)); | |
5647 | ||
69e3fd8c | 5648 | err = ei->get_variants(adapter); |
bc7f75fa AK |
5649 | if (err) |
5650 | goto err_hw_init; | |
5651 | ||
4a770358 BA |
5652 | if ((adapter->flags & FLAG_IS_ICH) && |
5653 | (adapter->flags & FLAG_READ_ONLY_NVM)) | |
5654 | e1000e_write_protect_nvm_ich8lan(&adapter->hw); | |
5655 | ||
bc7f75fa AK |
5656 | hw->mac.ops.get_bus_info(&adapter->hw); |
5657 | ||
318a94d6 | 5658 | adapter->hw.phy.autoneg_wait_to_complete = 0; |
bc7f75fa AK |
5659 | |
5660 | /* Copper options */ | |
318a94d6 | 5661 | if (adapter->hw.phy.media_type == e1000_media_type_copper) { |
bc7f75fa AK |
5662 | adapter->hw.phy.mdix = AUTO_ALL_MODES; |
5663 | adapter->hw.phy.disable_polarity_correction = 0; | |
5664 | adapter->hw.phy.ms_type = e1000_ms_hw_default; | |
5665 | } | |
5666 | ||
5667 | if (e1000_check_reset_block(&adapter->hw)) | |
44defeb3 | 5668 | e_info("PHY reset is blocked due to SOL/IDER session.\n"); |
bc7f75fa AK |
5669 | |
5670 | netdev->features = NETIF_F_SG | | |
5671 | NETIF_F_HW_CSUM | | |
5672 | NETIF_F_HW_VLAN_TX | | |
5673 | NETIF_F_HW_VLAN_RX; | |
5674 | ||
5675 | if (adapter->flags & FLAG_HAS_HW_VLAN_FILTER) | |
5676 | netdev->features |= NETIF_F_HW_VLAN_FILTER; | |
5677 | ||
5678 | netdev->features |= NETIF_F_TSO; | |
5679 | netdev->features |= NETIF_F_TSO6; | |
5680 | ||
a5136e23 JK |
5681 | netdev->vlan_features |= NETIF_F_TSO; |
5682 | netdev->vlan_features |= NETIF_F_TSO6; | |
5683 | netdev->vlan_features |= NETIF_F_HW_CSUM; | |
5684 | netdev->vlan_features |= NETIF_F_SG; | |
5685 | ||
7b872a55 | 5686 | if (pci_using_dac) { |
bc7f75fa | 5687 | netdev->features |= NETIF_F_HIGHDMA; |
7b872a55 YZ |
5688 | netdev->vlan_features |= NETIF_F_HIGHDMA; |
5689 | } | |
bc7f75fa | 5690 | |
bc7f75fa AK |
5691 | if (e1000e_enable_mng_pass_thru(&adapter->hw)) |
5692 | adapter->flags |= FLAG_MNG_PT_ENABLED; | |
5693 | ||
ad68076e BA |
5694 | /* |
5695 | * before reading the NVM, reset the controller to | |
5696 | * put the device in a known good starting state | |
5697 | */ | |
bc7f75fa AK |
5698 | adapter->hw.mac.ops.reset_hw(&adapter->hw); |
5699 | ||
5700 | /* | |
5701 | * systems with ASPM and others may see the checksum fail on the first | |
5702 | * attempt. Let's give it a few tries | |
5703 | */ | |
5704 | for (i = 0;; i++) { | |
5705 | if (e1000_validate_nvm_checksum(&adapter->hw) >= 0) | |
5706 | break; | |
5707 | if (i == 2) { | |
44defeb3 | 5708 | e_err("The NVM Checksum Is Not Valid\n"); |
bc7f75fa AK |
5709 | err = -EIO; |
5710 | goto err_eeprom; | |
5711 | } | |
5712 | } | |
5713 | ||
10aa4c04 AK |
5714 | e1000_eeprom_checks(adapter); |
5715 | ||
608f8a0d | 5716 | /* copy the MAC address */ |
bc7f75fa | 5717 | if (e1000e_read_mac_addr(&adapter->hw)) |
44defeb3 | 5718 | e_err("NVM Read Error while reading MAC address\n"); |
bc7f75fa AK |
5719 | |
5720 | memcpy(netdev->dev_addr, adapter->hw.mac.addr, netdev->addr_len); | |
5721 | memcpy(netdev->perm_addr, adapter->hw.mac.addr, netdev->addr_len); | |
5722 | ||
5723 | if (!is_valid_ether_addr(netdev->perm_addr)) { | |
7c510e4b | 5724 | e_err("Invalid MAC Address: %pM\n", netdev->perm_addr); |
bc7f75fa AK |
5725 | err = -EIO; |
5726 | goto err_eeprom; | |
5727 | } | |
5728 | ||
5729 | init_timer(&adapter->watchdog_timer); | |
c061b18d | 5730 | adapter->watchdog_timer.function = e1000_watchdog; |
bc7f75fa AK |
5731 | adapter->watchdog_timer.data = (unsigned long) adapter; |
5732 | ||
5733 | init_timer(&adapter->phy_info_timer); | |
c061b18d | 5734 | adapter->phy_info_timer.function = e1000_update_phy_info; |
bc7f75fa AK |
5735 | adapter->phy_info_timer.data = (unsigned long) adapter; |
5736 | ||
5737 | INIT_WORK(&adapter->reset_task, e1000_reset_task); | |
5738 | INIT_WORK(&adapter->watchdog_task, e1000_watchdog_task); | |
a8f88ff5 JB |
5739 | INIT_WORK(&adapter->downshift_task, e1000e_downshift_workaround); |
5740 | INIT_WORK(&adapter->update_phy_task, e1000e_update_phy_task); | |
41cec6f1 | 5741 | INIT_WORK(&adapter->print_hang_task, e1000_print_hw_hang); |
bc7f75fa | 5742 | |
bc7f75fa AK |
5743 | /* Initialize link parameters. User can change them with ethtool */ |
5744 | adapter->hw.mac.autoneg = 1; | |
309af40b | 5745 | adapter->fc_autoneg = 1; |
5c48ef3e BA |
5746 | adapter->hw.fc.requested_mode = e1000_fc_default; |
5747 | adapter->hw.fc.current_mode = e1000_fc_default; | |
bc7f75fa AK |
5748 | adapter->hw.phy.autoneg_advertised = 0x2f; |
5749 | ||
5750 | /* ring size defaults */ | |
5751 | adapter->rx_ring->count = 256; | |
5752 | adapter->tx_ring->count = 256; | |
5753 | ||
5754 | /* | |
5755 | * Initial Wake on LAN setting - If APM wake is enabled in | |
5756 | * the EEPROM, enable the ACPI Magic Packet filter | |
5757 | */ | |
5758 | if (adapter->flags & FLAG_APME_IN_WUC) { | |
5759 | /* APME bit in EEPROM is mapped to WUC.APME */ | |
5760 | eeprom_data = er32(WUC); | |
5761 | eeprom_apme_mask = E1000_WUC_APME; | |
a4f58f54 BA |
5762 | if (eeprom_data & E1000_WUC_PHY_WAKE) |
5763 | adapter->flags2 |= FLAG2_HAS_PHY_WAKEUP; | |
bc7f75fa AK |
5764 | } else if (adapter->flags & FLAG_APME_IN_CTRL3) { |
5765 | if (adapter->flags & FLAG_APME_CHECK_PORT_B && | |
5766 | (adapter->hw.bus.func == 1)) | |
5767 | e1000_read_nvm(&adapter->hw, | |
5768 | NVM_INIT_CONTROL3_PORT_B, 1, &eeprom_data); | |
5769 | else | |
5770 | e1000_read_nvm(&adapter->hw, | |
5771 | NVM_INIT_CONTROL3_PORT_A, 1, &eeprom_data); | |
5772 | } | |
5773 | ||
5774 | /* fetch WoL from EEPROM */ | |
5775 | if (eeprom_data & eeprom_apme_mask) | |
5776 | adapter->eeprom_wol |= E1000_WUFC_MAG; | |
5777 | ||
5778 | /* | |
5779 | * now that we have the eeprom settings, apply the special cases | |
5780 | * where the eeprom may be wrong or the board simply won't support | |
5781 | * wake on lan on a particular port | |
5782 | */ | |
5783 | if (!(adapter->flags & FLAG_HAS_WOL)) | |
5784 | adapter->eeprom_wol = 0; | |
5785 | ||
5786 | /* initialize the wol settings based on the eeprom settings */ | |
5787 | adapter->wol = adapter->eeprom_wol; | |
6ff68026 | 5788 | device_set_wakeup_enable(&adapter->pdev->dev, adapter->wol); |
bc7f75fa | 5789 | |
84527590 BA |
5790 | /* save off EEPROM version number */ |
5791 | e1000_read_nvm(&adapter->hw, 5, 1, &adapter->eeprom_vers); | |
5792 | ||
bc7f75fa AK |
5793 | /* reset the hardware with the new settings */ |
5794 | e1000e_reset(adapter); | |
5795 | ||
ad68076e BA |
5796 | /* |
5797 | * If the controller has AMT, do not set DRV_LOAD until the interface | |
bc7f75fa | 5798 | * is up. For all other cases, let the f/w know that the h/w is now |
ad68076e BA |
5799 | * under the control of the driver. |
5800 | */ | |
c43bc57e | 5801 | if (!(adapter->flags & FLAG_HAS_AMT)) |
bc7f75fa AK |
5802 | e1000_get_hw_control(adapter); |
5803 | ||
bc7f75fa AK |
5804 | strcpy(netdev->name, "eth%d"); |
5805 | err = register_netdev(netdev); | |
5806 | if (err) | |
5807 | goto err_register; | |
5808 | ||
9c563d20 JB |
5809 | /* carrier off reporting is important to ethtool even BEFORE open */ |
5810 | netif_carrier_off(netdev); | |
5811 | ||
bc7f75fa AK |
5812 | e1000_print_device_info(adapter); |
5813 | ||
f3ec4f87 AS |
5814 | if (pci_dev_run_wake(pdev)) |
5815 | pm_runtime_put_noidle(&pdev->dev); | |
23606cf5 | 5816 | |
bc7f75fa AK |
5817 | return 0; |
5818 | ||
5819 | err_register: | |
c43bc57e JB |
5820 | if (!(adapter->flags & FLAG_HAS_AMT)) |
5821 | e1000_release_hw_control(adapter); | |
bc7f75fa AK |
5822 | err_eeprom: |
5823 | if (!e1000_check_reset_block(&adapter->hw)) | |
5824 | e1000_phy_hw_reset(&adapter->hw); | |
c43bc57e | 5825 | err_hw_init: |
bc7f75fa | 5826 | |
bc7f75fa AK |
5827 | kfree(adapter->tx_ring); |
5828 | kfree(adapter->rx_ring); | |
5829 | err_sw_init: | |
c43bc57e JB |
5830 | if (adapter->hw.flash_address) |
5831 | iounmap(adapter->hw.flash_address); | |
e82f54ba | 5832 | e1000e_reset_interrupt_capability(adapter); |
c43bc57e | 5833 | err_flashmap: |
bc7f75fa AK |
5834 | iounmap(adapter->hw.hw_addr); |
5835 | err_ioremap: | |
5836 | free_netdev(netdev); | |
5837 | err_alloc_etherdev: | |
f0f422e5 BA |
5838 | pci_release_selected_regions(pdev, |
5839 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
bc7f75fa AK |
5840 | err_pci_reg: |
5841 | err_dma: | |
5842 | pci_disable_device(pdev); | |
5843 | return err; | |
5844 | } | |
5845 | ||
5846 | /** | |
5847 | * e1000_remove - Device Removal Routine | |
5848 | * @pdev: PCI device information struct | |
5849 | * | |
5850 | * e1000_remove is called by the PCI subsystem to alert the driver | |
5851 | * that it should release a PCI device. The could be caused by a | |
5852 | * Hot-Plug event, or because the driver is going to be removed from | |
5853 | * memory. | |
5854 | **/ | |
5855 | static void __devexit e1000_remove(struct pci_dev *pdev) | |
5856 | { | |
5857 | struct net_device *netdev = pci_get_drvdata(pdev); | |
5858 | struct e1000_adapter *adapter = netdev_priv(netdev); | |
23606cf5 RW |
5859 | bool down = test_bit(__E1000_DOWN, &adapter->state); |
5860 | ||
ad68076e BA |
5861 | /* |
5862 | * flush_scheduled work may reschedule our watchdog task, so | |
5863 | * explicitly disable watchdog tasks from being rescheduled | |
5864 | */ | |
23606cf5 RW |
5865 | if (!down) |
5866 | set_bit(__E1000_DOWN, &adapter->state); | |
bc7f75fa AK |
5867 | del_timer_sync(&adapter->watchdog_timer); |
5868 | del_timer_sync(&adapter->phy_info_timer); | |
5869 | ||
41cec6f1 BA |
5870 | cancel_work_sync(&adapter->reset_task); |
5871 | cancel_work_sync(&adapter->watchdog_task); | |
5872 | cancel_work_sync(&adapter->downshift_task); | |
5873 | cancel_work_sync(&adapter->update_phy_task); | |
5874 | cancel_work_sync(&adapter->print_hang_task); | |
bc7f75fa AK |
5875 | flush_scheduled_work(); |
5876 | ||
17f208de BA |
5877 | if (!(netdev->flags & IFF_UP)) |
5878 | e1000_power_down_phy(adapter); | |
5879 | ||
23606cf5 RW |
5880 | /* Don't lie to e1000_close() down the road. */ |
5881 | if (!down) | |
5882 | clear_bit(__E1000_DOWN, &adapter->state); | |
17f208de BA |
5883 | unregister_netdev(netdev); |
5884 | ||
f3ec4f87 AS |
5885 | if (pci_dev_run_wake(pdev)) |
5886 | pm_runtime_get_noresume(&pdev->dev); | |
23606cf5 | 5887 | |
ad68076e BA |
5888 | /* |
5889 | * Release control of h/w to f/w. If f/w is AMT enabled, this | |
5890 | * would have already happened in close and is redundant. | |
5891 | */ | |
bc7f75fa AK |
5892 | e1000_release_hw_control(adapter); |
5893 | ||
4662e82b | 5894 | e1000e_reset_interrupt_capability(adapter); |
bc7f75fa AK |
5895 | kfree(adapter->tx_ring); |
5896 | kfree(adapter->rx_ring); | |
5897 | ||
5898 | iounmap(adapter->hw.hw_addr); | |
5899 | if (adapter->hw.flash_address) | |
5900 | iounmap(adapter->hw.flash_address); | |
f0f422e5 BA |
5901 | pci_release_selected_regions(pdev, |
5902 | pci_select_bars(pdev, IORESOURCE_MEM)); | |
bc7f75fa AK |
5903 | |
5904 | free_netdev(netdev); | |
5905 | ||
111b9dc5 | 5906 | /* AER disable */ |
19d5afd4 | 5907 | pci_disable_pcie_error_reporting(pdev); |
111b9dc5 | 5908 | |
bc7f75fa AK |
5909 | pci_disable_device(pdev); |
5910 | } | |
5911 | ||
5912 | /* PCI Error Recovery (ERS) */ | |
5913 | static struct pci_error_handlers e1000_err_handler = { | |
5914 | .error_detected = e1000_io_error_detected, | |
5915 | .slot_reset = e1000_io_slot_reset, | |
5916 | .resume = e1000_io_resume, | |
5917 | }; | |
5918 | ||
a3aa1884 | 5919 | static DEFINE_PCI_DEVICE_TABLE(e1000_pci_tbl) = { |
bc7f75fa AK |
5920 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_COPPER), board_82571 }, |
5921 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_FIBER), board_82571 }, | |
5922 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER), board_82571 }, | |
5923 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_COPPER_LP), board_82571 }, | |
5924 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_QUAD_FIBER), board_82571 }, | |
5925 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES), board_82571 }, | |
040babf9 AK |
5926 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_DUAL), board_82571 }, |
5927 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571EB_SERDES_QUAD), board_82571 }, | |
5928 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82571PT_QUAD_COPPER), board_82571 }, | |
ad68076e | 5929 | |
bc7f75fa AK |
5930 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI), board_82572 }, |
5931 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_COPPER), board_82572 }, | |
5932 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_FIBER), board_82572 }, | |
5933 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82572EI_SERDES), board_82572 }, | |
ad68076e | 5934 | |
bc7f75fa AK |
5935 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E), board_82573 }, |
5936 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573E_IAMT), board_82573 }, | |
5937 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82573L), board_82573 }, | |
ad68076e | 5938 | |
4662e82b | 5939 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574L), board_82574 }, |
bef28b11 | 5940 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82574LA), board_82574 }, |
8c81c9c3 | 5941 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_82583V), board_82583 }, |
4662e82b | 5942 | |
bc7f75fa AK |
5943 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_DPT), |
5944 | board_80003es2lan }, | |
5945 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_COPPER_SPT), | |
5946 | board_80003es2lan }, | |
5947 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_DPT), | |
5948 | board_80003es2lan }, | |
5949 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_80003ES2LAN_SERDES_SPT), | |
5950 | board_80003es2lan }, | |
ad68076e | 5951 | |
bc7f75fa AK |
5952 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE), board_ich8lan }, |
5953 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_G), board_ich8lan }, | |
5954 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IFE_GT), board_ich8lan }, | |
5955 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_AMT), board_ich8lan }, | |
5956 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_C), board_ich8lan }, | |
5957 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M), board_ich8lan }, | |
5958 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_IGP_M_AMT), board_ich8lan }, | |
9e135a2e | 5959 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH8_82567V_3), board_ich8lan }, |
ad68076e | 5960 | |
bc7f75fa AK |
5961 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE), board_ich9lan }, |
5962 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_G), board_ich9lan }, | |
5963 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IFE_GT), board_ich9lan }, | |
5964 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_AMT), board_ich9lan }, | |
5965 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_C), board_ich9lan }, | |
2f15f9d6 | 5966 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_BM), board_ich9lan }, |
97ac8cae BA |
5967 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M), board_ich9lan }, |
5968 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_AMT), board_ich9lan }, | |
5969 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH9_IGP_M_V), board_ich9lan }, | |
5970 | ||
5971 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LM), board_ich9lan }, | |
5972 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_LF), board_ich9lan }, | |
5973 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_R_BM_V), board_ich9lan }, | |
bc7f75fa | 5974 | |
f4187b56 BA |
5975 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LM), board_ich10lan }, |
5976 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_LF), board_ich10lan }, | |
10df0b91 | 5977 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_ICH10_D_BM_V), board_ich10lan }, |
f4187b56 | 5978 | |
a4f58f54 BA |
5979 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LM), board_pchlan }, |
5980 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_M_HV_LC), board_pchlan }, | |
5981 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DM), board_pchlan }, | |
5982 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH_D_HV_DC), board_pchlan }, | |
5983 | ||
d3738bb8 BA |
5984 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_LM), board_pch2lan }, |
5985 | { PCI_VDEVICE(INTEL, E1000_DEV_ID_PCH2_LV_V), board_pch2lan }, | |
5986 | ||
bc7f75fa AK |
5987 | { } /* terminate list */ |
5988 | }; | |
5989 | MODULE_DEVICE_TABLE(pci, e1000_pci_tbl); | |
5990 | ||
a0340162 | 5991 | #ifdef CONFIG_PM_OPS |
23606cf5 | 5992 | static const struct dev_pm_ops e1000_pm_ops = { |
a0340162 RW |
5993 | SET_SYSTEM_SLEEP_PM_OPS(e1000_suspend, e1000_resume) |
5994 | SET_RUNTIME_PM_OPS(e1000_runtime_suspend, | |
5995 | e1000_runtime_resume, e1000_idle) | |
23606cf5 | 5996 | }; |
e50208a0 | 5997 | #endif |
23606cf5 | 5998 | |
bc7f75fa AK |
5999 | /* PCI Device API Driver */ |
6000 | static struct pci_driver e1000_driver = { | |
6001 | .name = e1000e_driver_name, | |
6002 | .id_table = e1000_pci_tbl, | |
6003 | .probe = e1000_probe, | |
6004 | .remove = __devexit_p(e1000_remove), | |
a0340162 | 6005 | #ifdef CONFIG_PM_OPS |
23606cf5 | 6006 | .driver.pm = &e1000_pm_ops, |
bc7f75fa AK |
6007 | #endif |
6008 | .shutdown = e1000_shutdown, | |
6009 | .err_handler = &e1000_err_handler | |
6010 | }; | |
6011 | ||
6012 | /** | |
6013 | * e1000_init_module - Driver Registration Routine | |
6014 | * | |
6015 | * e1000_init_module is the first routine called when the driver is | |
6016 | * loaded. All it does is register with the PCI subsystem. | |
6017 | **/ | |
6018 | static int __init e1000_init_module(void) | |
6019 | { | |
6020 | int ret; | |
8544b9f7 BA |
6021 | pr_info("Intel(R) PRO/1000 Network Driver - %s\n", |
6022 | e1000e_driver_version); | |
451152d9 | 6023 | pr_info("Copyright (c) 1999 - 2010 Intel Corporation.\n"); |
bc7f75fa | 6024 | ret = pci_register_driver(&e1000_driver); |
53ec5498 | 6025 | |
bc7f75fa AK |
6026 | return ret; |
6027 | } | |
6028 | module_init(e1000_init_module); | |
6029 | ||
6030 | /** | |
6031 | * e1000_exit_module - Driver Exit Cleanup Routine | |
6032 | * | |
6033 | * e1000_exit_module is called just before the driver is removed | |
6034 | * from memory. | |
6035 | **/ | |
6036 | static void __exit e1000_exit_module(void) | |
6037 | { | |
6038 | pci_unregister_driver(&e1000_driver); | |
6039 | } | |
6040 | module_exit(e1000_exit_module); | |
6041 | ||
6042 | ||
6043 | MODULE_AUTHOR("Intel Corporation, <linux.nics@intel.com>"); | |
6044 | MODULE_DESCRIPTION("Intel(R) PRO/1000 Network Driver"); | |
6045 | MODULE_LICENSE("GPL"); | |
6046 | MODULE_VERSION(DRV_VERSION); | |
6047 | ||
6048 | /* e1000_main.c */ |